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skia2/tests/SkVMTest.cpp
Mike Klein ee40ec6dd6 remove Op::pack 
pack(x,y,bits) as an alias for x|(y<<bits) only existed originally to
implement it with the SLI arm64 instruction, but I've since realized
that was misguided.

I had thought the assumption on pack ("(x & (y << bits)) == 0"), i.e.
"no overlap between x and the shifted y", was enough to make using SLI
legal, but it's actually not strong enough a requirement.

The SLI docs say "...inserts the result into the corresponding vector
element in the destination SIMD&FP register such that the new zero bits
created by the shift are not inserted but retain their existing value."
The key thing not mentioned there happens with zero bits _not_ created
by the shift, the ones already present at the top of y.  They're of
course inserted, overwriting any previous values.

This means SLI (and so pack()) become strictly order dependent in a way
I had never intended.  This will work as you'd think,

    skvm::I32 px = splat(0);
    px = pack(px, r,  0);
    px = pack(px, a, 24);

but this version swapping the two calls to pack() will overwrite alpha,

    skvm::I32 px = splat(0);
    px = pack(px, a, 24);
    px = pack(px, r,  0);

I find that error-prone, so I've removed Op::pack and replaced it
with a simple expansion to x|(y<<bits).  That of course works in either
order.

This new test can't JIT at head, but if we implement the other missing
instructions (soon, dependent CL) it would start failing when JIT'd.
The interpreter and x86 were both fine, since they're both doing what's
now the only approach to pack(), the simple x|(y<<bits).

I've left assembler support for SLI in case we want to try it again.

Change-Id: Iaf879309d3e1d0a458a688f3a62556e55ab05e23
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337197
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2020-11-21 12:38:19 +00:00

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/*
* Copyright 2019 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkColorPriv.h"
#include "include/private/SkColorData.h"
#include "src/core/SkCpu.h"
#include "src/core/SkMSAN.h"
#include "src/core/SkVM.h"
#include "tests/Test.h"
#include "tools/Resources.h"
#include "tools/SkVMBuilders.h"
using Fmt = SrcoverBuilder_F32::Fmt;
const char* fmt_name(Fmt fmt) {
switch (fmt) {
case Fmt::A8: return "A8";
case Fmt::G8: return "G8";
case Fmt::RGBA_8888: return "RGBA_8888";
}
return "";
}
static void dump(skvm::Builder& builder, SkWStream* o) {
skvm::Program program = builder.done();
builder.dump(o);
o->writeText("\n");
program.dump(o);
o->writeText("\n");
}
template <typename Fn>
static void test_jit_and_interpreter(skvm::Program&& program, Fn&& test) {
if (program.hasJIT()) {
test((const skvm::Program&) program);
program.dropJIT();
}
test((const skvm::Program&) program);
}
DEF_TEST(SkVM, r) {
SkDynamicMemoryWStream buf;
// Write all combinations of SrcoverBuilder_F32
for (int s = 0; s < 3; s++)
for (int d = 0; d < 3; d++) {
auto srcFmt = (Fmt)s,
dstFmt = (Fmt)d;
SrcoverBuilder_F32 builder{srcFmt, dstFmt};
buf.writeText(fmt_name(srcFmt));
buf.writeText(" over ");
buf.writeText(fmt_name(dstFmt));
buf.writeText("\n");
dump(builder, &buf);
}
// Write the I32 Srcovers also.
{
SrcoverBuilder_I32_Naive builder;
buf.writeText("I32 (Naive) 8888 over 8888\n");
dump(builder, &buf);
}
{
// Demonstrate the value of program reordering.
skvm::Builder b;
skvm::Arg sp = b.varying<int>(),
dp = b.varying<int>();
skvm::I32 byte = b.splat(0xff);
skvm::I32 src = b.load32(sp),
sr = b.extract(src, 0, byte),
sg = b.extract(src, 8, byte),
sb = b.extract(src, 16, byte),
sa = b.extract(src, 24, byte);
skvm::I32 dst = b.load32(dp),
dr = b.extract(dst, 0, byte),
dg = b.extract(dst, 8, byte),
db = b.extract(dst, 16, byte),
da = b.extract(dst, 24, byte);
skvm::I32 R = b.add(sr, dr),
G = b.add(sg, dg),
B = b.add(sb, db),
A = b.add(sa, da);
skvm::I32 rg = b.pack(R, G, 8),
ba = b.pack(B, A, 8),
rgba = b.pack(rg, ba, 16);
b.store32(dp, rgba);
dump(b, &buf);
}
// Our checked in dump expectations assume we have FMA support.
if (skvm::fma_supported()) {
sk_sp<SkData> actual = buf.detachAsData();
bool writeActualAsNewExpectation = false;
{
sk_sp<SkData> expected = GetResourceAsData("SkVMTest.expected");
if (!expected) {
ERRORF(r, "Couldn't load SkVMTest.expected.");
writeActualAsNewExpectation = true;
} else if (!expected->equals(actual.get())) {
ERRORF(r, "SkVMTest expected\n%.*s\nbut got\n%.*s\n",
(int)expected->size(), expected->data(),
(int)actual->size(), actual->data());
writeActualAsNewExpectation = true;
}
}
if (writeActualAsNewExpectation) {
SkFILEWStream out(GetResourcePath("SkVMTest.expected").c_str());
if (out.isValid()) {
out.write(actual->data(), actual->size());
}
}
}
auto test_8888 = [&](skvm::Program&& program) {
uint32_t src[9];
uint32_t dst[SK_ARRAY_COUNT(src)];
test_jit_and_interpreter(std::move(program), [&](const skvm::Program& program) {
for (int i = 0; i < (int)SK_ARRAY_COUNT(src); i++) {
src[i] = 0xbb007733;
dst[i] = 0xffaaccee;
}
SkPMColor expected = SkPMSrcOver(src[0], dst[0]); // 0xff2dad73
program.eval((int)SK_ARRAY_COUNT(src), src, dst);
// dst is probably 0xff2dad72.
for (auto got : dst) {
auto want = expected;
for (int i = 0; i < 4; i++) {
uint8_t d = got & 0xff,
w = want & 0xff;
if (abs(d-w) >= 2) {
SkDebugf("d %02x, w %02x\n", d,w);
}
REPORTER_ASSERT(r, abs(d-w) < 2);
got >>= 8;
want >>= 8;
}
}
});
};
test_8888(SrcoverBuilder_F32{Fmt::RGBA_8888, Fmt::RGBA_8888}.done("srcover_f32"));
test_8888(SrcoverBuilder_I32_Naive{}.done("srcover_i32_naive"));
test_jit_and_interpreter(SrcoverBuilder_F32{Fmt::RGBA_8888, Fmt::G8}.done(),
[&](const skvm::Program& program) {
uint32_t src[9];
uint8_t dst[SK_ARRAY_COUNT(src)];
for (int i = 0; i < (int)SK_ARRAY_COUNT(src); i++) {
src[i] = 0xbb007733;
dst[i] = 0x42;
}
SkPMColor over = SkPMSrcOver(SkPackARGB32(0xbb, 0x33, 0x77, 0x00),
0xff424242);
uint8_t want = SkComputeLuminance(SkGetPackedR32(over),
SkGetPackedG32(over),
SkGetPackedB32(over));
program.eval((int)SK_ARRAY_COUNT(src), src, dst);
for (auto got : dst) {
REPORTER_ASSERT(r, abs(got-want) < 3);
}
});
test_jit_and_interpreter(SrcoverBuilder_F32{Fmt::A8, Fmt::A8}.done(),
[&](const skvm::Program& program) {
uint8_t src[256],
dst[256];
for (int i = 0; i < 256; i++) {
src[i] = 255 - i;
dst[i] = i;
}
program.eval(256, src, dst);
for (int i = 0; i < 256; i++) {
uint8_t want = SkGetPackedA32(SkPMSrcOver(SkPackARGB32(src[i], 0,0,0),
SkPackARGB32( i, 0,0,0)));
REPORTER_ASSERT(r, abs(dst[i]-want) < 2);
}
});
}
DEF_TEST(SkVM_eliminate_dead_code, r) {
skvm::Builder b;
{
skvm::Arg arg = b.varying<int>();
skvm::I32 l = b.load32(arg);
skvm::I32 a = b.add(l, l);
b.add(a, b.splat(7));
}
std::vector<skvm::Instruction> program = b.program();
REPORTER_ASSERT(r, program.size() == 4);
program = skvm::eliminate_dead_code(program);
REPORTER_ASSERT(r, program.size() == 0);
}
DEF_TEST(SkVM_Usage, r) {
skvm::Builder b;
{
skvm::Arg arg = b.varying<int>(),
buf = b.varying<int>();
skvm::I32 l = b.load32(arg);
skvm::I32 a = b.add(l, l);
skvm::I32 s = b.add(a, b.splat(7));
b.store32(buf, s);
}
skvm::Usage usage{b.program()};
REPORTER_ASSERT(r, b.program()[0].op == skvm::Op::load32);
REPORTER_ASSERT(r, usage[0].size() == 2);
REPORTER_ASSERT(r, b.program()[1].op == skvm::Op::add_i32);
REPORTER_ASSERT(r, usage[1].size() == 1);
REPORTER_ASSERT(r, b.program()[2].op == skvm::Op::splat);
REPORTER_ASSERT(r, usage[2].size() == 1);
REPORTER_ASSERT(r, b.program()[3].op == skvm::Op::add_i32);
REPORTER_ASSERT(r, usage[3].size() == 1);
}
DEF_TEST(SkVM_Pointless, r) {
// Let's build a program with no memory arguments.
// It should all be pegged as dead code, but we should be able to "run" it.
skvm::Builder b;
{
b.add(b.splat(5.0f),
b.splat(4.0f));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
for (int N = 0; N < 64; N++) {
program.eval(N);
}
});
for (const skvm::OptimizedInstruction& inst : b.optimize()) {
REPORTER_ASSERT(r, inst.death == 0 && inst.can_hoist == true);
}
}
DEF_TEST(SkVM_memset, r) {
skvm::Builder b;
b.store32(b.varying<int>(), b.splat(42));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& p) {
int buf[18];
buf[17] = 47;
p.eval(17, buf);
for (int i = 0; i < 17; i++) {
REPORTER_ASSERT(r, buf[i] == 42);
}
REPORTER_ASSERT(r, buf[17] == 47);
});
}
DEF_TEST(SkVM_memcpy, r) {
skvm::Builder b;
{
auto src = b.varying<int>(),
dst = b.varying<int>();
b.store32(dst, b.load32(src));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& p) {
int src[] = {1,2,3,4,5,6,7,8,9},
dst[] = {0,0,0,0,0,0,0,0,0};
p.eval(SK_ARRAY_COUNT(src)-1, src, dst);
for (size_t i = 0; i < SK_ARRAY_COUNT(src)-1; i++) {
REPORTER_ASSERT(r, dst[i] == src[i]);
}
size_t i = SK_ARRAY_COUNT(src)-1;
REPORTER_ASSERT(r, dst[i] == 0);
});
}
DEF_TEST(SkVM_LoopCounts, r) {
// Make sure we cover all the exact N we want.
// buf[i] += 1
skvm::Builder b;
skvm::Arg arg = b.varying<int>();
b.store32(arg,
b.add(b.splat(1),
b.load32(arg)));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int buf[64];
for (int N = 0; N <= (int)SK_ARRAY_COUNT(buf); N++) {
for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) {
buf[i] = i;
}
program.eval(N, buf);
for (int i = 0; i < N; i++) {
REPORTER_ASSERT(r, buf[i] == i+1);
}
for (int i = N; i < (int)SK_ARRAY_COUNT(buf); i++) {
REPORTER_ASSERT(r, buf[i] == i);
}
}
});
}
DEF_TEST(SkVM_gather32, r) {
skvm::Builder b;
{
skvm::Arg uniforms = b.uniform(),
buf = b.varying<int>();
skvm::I32 x = b.load32(buf);
b.store32(buf, b.gather32(uniforms,0, b.bit_and(x, b.splat(7))));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
const int img[] = {12,34,56,78, 90,98,76,54};
int buf[20];
for (int i = 0; i < 20; i++) {
buf[i] = i;
}
struct Uniforms {
const int* img;
} uniforms{img};
program.eval(20, &uniforms, buf);
int i = 0;
REPORTER_ASSERT(r, buf[i] == 12); i++;
REPORTER_ASSERT(r, buf[i] == 34); i++;
REPORTER_ASSERT(r, buf[i] == 56); i++;
REPORTER_ASSERT(r, buf[i] == 78); i++;
REPORTER_ASSERT(r, buf[i] == 90); i++;
REPORTER_ASSERT(r, buf[i] == 98); i++;
REPORTER_ASSERT(r, buf[i] == 76); i++;
REPORTER_ASSERT(r, buf[i] == 54); i++;
REPORTER_ASSERT(r, buf[i] == 12); i++;
REPORTER_ASSERT(r, buf[i] == 34); i++;
REPORTER_ASSERT(r, buf[i] == 56); i++;
REPORTER_ASSERT(r, buf[i] == 78); i++;
REPORTER_ASSERT(r, buf[i] == 90); i++;
REPORTER_ASSERT(r, buf[i] == 98); i++;
REPORTER_ASSERT(r, buf[i] == 76); i++;
REPORTER_ASSERT(r, buf[i] == 54); i++;
REPORTER_ASSERT(r, buf[i] == 12); i++;
REPORTER_ASSERT(r, buf[i] == 34); i++;
REPORTER_ASSERT(r, buf[i] == 56); i++;
REPORTER_ASSERT(r, buf[i] == 78); i++;
});
}
DEF_TEST(SkVM_gathers, r) {
skvm::Builder b;
{
skvm::Arg uniforms = b.uniform(),
buf32 = b.varying<int>(),
buf16 = b.varying<uint16_t>(),
buf8 = b.varying<uint8_t>();
skvm::I32 x = b.load32(buf32);
b.store32(buf32, b.gather32(uniforms,0, b.bit_and(x, b.splat( 7))));
b.store16(buf16, b.gather16(uniforms,0, b.bit_and(x, b.splat(15))));
b.store8 (buf8 , b.gather8 (uniforms,0, b.bit_and(x, b.splat(31))));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
const int img[] = {12,34,56,78, 90,98,76,54};
constexpr int N = 20;
int buf32[N];
uint16_t buf16[N];
uint8_t buf8 [N];
for (int i = 0; i < 20; i++) {
buf32[i] = i;
}
struct Uniforms {
const int* img;
} uniforms{img};
program.eval(N, &uniforms, buf32, buf16, buf8);
int i = 0;
REPORTER_ASSERT(r, buf32[i] == 12 && buf16[i] == 12 && buf8[i] == 12); i++;
REPORTER_ASSERT(r, buf32[i] == 34 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 56 && buf16[i] == 34 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 78 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 90 && buf16[i] == 56 && buf8[i] == 34); i++;
REPORTER_ASSERT(r, buf32[i] == 98 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 76 && buf16[i] == 78 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 54 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 12 && buf16[i] == 90 && buf8[i] == 56); i++;
REPORTER_ASSERT(r, buf32[i] == 34 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 56 && buf16[i] == 98 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 78 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 90 && buf16[i] == 76 && buf8[i] == 78); i++;
REPORTER_ASSERT(r, buf32[i] == 98 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 76 && buf16[i] == 54 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 54 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 12 && buf16[i] == 12 && buf8[i] == 90); i++;
REPORTER_ASSERT(r, buf32[i] == 34 && buf16[i] == 0 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 56 && buf16[i] == 34 && buf8[i] == 0); i++;
REPORTER_ASSERT(r, buf32[i] == 78 && buf16[i] == 0 && buf8[i] == 0); i++;
});
}
DEF_TEST(SkVM_gathers2, r) {
skvm::Builder b;
{
skvm::Arg uniforms = b.uniform(),
buf32 = b.varying<int>(),
buf16 = b.varying<uint16_t>(),
buf8 = b.varying<uint8_t>();
skvm::I32 x = b.load32(buf32);
b.store32(buf32, b.gather32(uniforms,0, x));
b.store16(buf16, b.gather16(uniforms,0, x));
b.store8 (buf8 , b.gather8 (uniforms,0, x));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
uint8_t img[256];
for (int i = 0; i < 256; i++) {
img[i] = i;
}
int buf32[64];
uint16_t buf16[64];
uint8_t buf8 [64];
for (int i = 0; i < 64; i++) {
buf32[i] = (i*47)&63;
buf16[i] = 0;
buf8 [i] = 0;
}
struct Uniforms {
const uint8_t* img;
} uniforms{img};
program.eval(64, &uniforms, buf32, buf16, buf8);
for (int i = 0; i < 64; i++) {
REPORTER_ASSERT(r, buf8[i] == ((i*47)&63)); // 0,47,30,13,60,...
}
REPORTER_ASSERT(r, buf16[ 0] == 0x0100);
REPORTER_ASSERT(r, buf16[63] == 0x2322);
REPORTER_ASSERT(r, buf32[ 0] == 0x03020100);
REPORTER_ASSERT(r, buf32[63] == 0x47464544);
});
}
DEF_TEST(SkVM_bitops, r) {
skvm::Builder b;
{
skvm::Arg ptr = b.varying<int>();
skvm::I32 x = b.load32(ptr);
x = b.bit_and (x, b.splat(0xf1)); // 0x40
x = b.bit_or (x, b.splat(0x80)); // 0xc0
x = b.bit_xor (x, b.splat(0xfe)); // 0x3e
x = b.bit_clear(x, b.splat(0x30)); // 0x0e
x = b.shl(x, 28); // 0xe000'0000
x = b.sra(x, 28); // 0xffff'fffe
x = b.shr(x, 1); // 0x7fff'ffff
b.store32(ptr, x);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int x = 0x42;
program.eval(1, &x);
REPORTER_ASSERT(r, x == 0x7fff'ffff);
});
}
DEF_TEST(SkVM_select_is_NaN, r) {
skvm::Builder b;
{
skvm::Arg src = b.varying<float>(),
dst = b.varying<float>();
skvm::F32 x = b.loadF(src);
x = select(is_NaN(x), b.splat(0.0f)
, x);
b.storeF(dst, x);
}
std::vector<skvm::OptimizedInstruction> program = b.optimize();
REPORTER_ASSERT(r, program.size() == 4);
REPORTER_ASSERT(r, program[0].op == skvm::Op::load32);
REPORTER_ASSERT(r, program[1].op == skvm::Op::neq_f32);
REPORTER_ASSERT(r, program[2].op == skvm::Op::bit_clear);
REPORTER_ASSERT(r, program[3].op == skvm::Op::store32);
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
// ±NaN, ±0, ±1, ±inf
uint32_t src[] = {0x7f80'0001, 0xff80'0001, 0x0000'0000, 0x8000'0000,
0x3f80'0000, 0xbf80'0000, 0x7f80'0000, 0xff80'0000};
uint32_t dst[SK_ARRAY_COUNT(src)];
program.eval(SK_ARRAY_COUNT(src), src, dst);
for (int i = 0; i < (int)SK_ARRAY_COUNT(src); i++) {
REPORTER_ASSERT(r, dst[i] == (i < 2 ? 0 : src[i]));
}
});
}
DEF_TEST(SkVM_f32, r) {
skvm::Builder b;
{
skvm::Arg arg = b.varying<float>();
skvm::F32 x = b.loadF(arg),
y = b.add(x,x), // y = 2x
z = b.sub(y,x), // z = 2x-x = x
w = b.div(z,x); // w = x/x = 1
b.storeF(arg, w);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float buf[] = { 1,2,3,4,5,6,7,8,9 };
program.eval(SK_ARRAY_COUNT(buf), buf);
for (float v : buf) {
REPORTER_ASSERT(r, v == 1.0f);
}
});
}
DEF_TEST(SkVM_cmp_i32, r) {
skvm::Builder b;
{
skvm::I32 x = b.load32(b.varying<int>());
auto to_bit = [&](int shift, skvm::I32 mask) {
return b.shl(b.bit_and(mask, b.splat(0x1)), shift);
};
skvm::I32 m = b.splat(0);
m = b.bit_or(m, to_bit(0, b. eq(x, b.splat(0))));
m = b.bit_or(m, to_bit(1, b.neq(x, b.splat(1))));
m = b.bit_or(m, to_bit(2, b. lt(x, b.splat(2))));
m = b.bit_or(m, to_bit(3, b.lte(x, b.splat(3))));
m = b.bit_or(m, to_bit(4, b. gt(x, b.splat(4))));
m = b.bit_or(m, to_bit(5, b.gte(x, b.splat(5))));
b.store32(b.varying<int>(), m);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int in[] = { 0,1,2,3,4,5,6,7,8,9 };
int out[SK_ARRAY_COUNT(in)];
program.eval(SK_ARRAY_COUNT(in), in, out);
REPORTER_ASSERT(r, out[0] == 0b001111);
REPORTER_ASSERT(r, out[1] == 0b001100);
REPORTER_ASSERT(r, out[2] == 0b001010);
REPORTER_ASSERT(r, out[3] == 0b001010);
REPORTER_ASSERT(r, out[4] == 0b000010);
for (int i = 5; i < (int)SK_ARRAY_COUNT(out); i++) {
REPORTER_ASSERT(r, out[i] == 0b110010);
}
});
}
DEF_TEST(SkVM_cmp_f32, r) {
skvm::Builder b;
{
skvm::F32 x = b.loadF(b.varying<float>());
auto to_bit = [&](int shift, skvm::I32 mask) {
return b.shl(b.bit_and(mask, b.splat(0x1)), shift);
};
skvm::I32 m = b.splat(0);
m = b.bit_or(m, to_bit(0, b. eq(x, b.splat(0.0f))));
m = b.bit_or(m, to_bit(1, b.neq(x, b.splat(1.0f))));
m = b.bit_or(m, to_bit(2, b. lt(x, b.splat(2.0f))));
m = b.bit_or(m, to_bit(3, b.lte(x, b.splat(3.0f))));
m = b.bit_or(m, to_bit(4, b. gt(x, b.splat(4.0f))));
m = b.bit_or(m, to_bit(5, b.gte(x, b.splat(5.0f))));
b.store32(b.varying<int>(), m);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float in[] = { 0,1,2,3,4,5,6,7,8,9 };
int out[SK_ARRAY_COUNT(in)];
program.eval(SK_ARRAY_COUNT(in), in, out);
REPORTER_ASSERT(r, out[0] == 0b001111);
REPORTER_ASSERT(r, out[1] == 0b001100);
REPORTER_ASSERT(r, out[2] == 0b001010);
REPORTER_ASSERT(r, out[3] == 0b001010);
REPORTER_ASSERT(r, out[4] == 0b000010);
for (int i = 5; i < (int)SK_ARRAY_COUNT(out); i++) {
REPORTER_ASSERT(r, out[i] == 0b110010);
}
});
}
DEF_TEST(SkVM_index, r) {
skvm::Builder b;
b.store32(b.varying<int>(), b.index());
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int buf[23];
program.eval(SK_ARRAY_COUNT(buf), buf);
for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) {
REPORTER_ASSERT(r, buf[i] == (int)SK_ARRAY_COUNT(buf)-i);
}
});
}
DEF_TEST(SkVM_mad, r) {
// This program is designed to exercise the tricky corners of instruction
// and register selection for Op::mad_f32.
skvm::Builder b;
{
skvm::Arg arg = b.varying<int>();
skvm::F32 x = b.to_F32(b.load32(arg)),
y = b.mad(x,x,x), // x is needed in the future, so r[x] != r[y].
z = b.mad(y,y,x), // y is needed in the future, but r[z] = r[x] is ok.
w = b.mad(z,z,y), // w can alias z but not y.
v = b.mad(w,y,w); // Got to stop somewhere.
b.store32(arg, b.trunc(v));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int x = 2;
program.eval(1, &x);
// x = 2
// y = 2*2 + 2 = 6
// z = 6*6 + 2 = 38
// w = 38*38 + 6 = 1450
// v = 1450*6 + 1450 = 10150
REPORTER_ASSERT(r, x == 10150);
});
}
DEF_TEST(SkVM_fms, r) {
// Create a pattern that can be peepholed into an Op::fms_f32.
skvm::Builder b;
{
skvm::Arg arg = b.varying<int>();
skvm::F32 x = b.to_F32(b.load32(arg)),
v = b.sub(b.mul(x, b.splat(2.0f)),
b.splat(1.0f));
b.store32(arg, b.trunc(v));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int buf[] = {0,1,2,3,4,5,6,7,8,9,10};
program.eval((int)SK_ARRAY_COUNT(buf), &buf);
for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) {
REPORTER_ASSERT(r, buf[i] = 2*i-1);
}
});
}
DEF_TEST(SkVM_fnma, r) {
// Create a pattern that can be peepholed into an Op::fnma_f32.
skvm::Builder b;
{
skvm::Arg arg = b.varying<int>();
skvm::F32 x = b.to_F32(b.load32(arg)),
v = b.sub(b.splat(1.0f),
b.mul(x, b.splat(2.0f)));
b.store32(arg, b.trunc(v));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int buf[] = {0,1,2,3,4,5,6,7,8,9,10};
program.eval((int)SK_ARRAY_COUNT(buf), &buf);
for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) {
REPORTER_ASSERT(r, buf[i] = 1-2*i);
}
});
}
DEF_TEST(SkVM_madder, r) {
skvm::Builder b;
{
skvm::Arg arg = b.varying<float>();
skvm::F32 x = b.loadF(arg),
y = b.mad(x,x,x), // x is needed in the future, so r[x] != r[y].
z = b.mad(y,x,y), // r[x] can be reused after this instruction, but not r[y].
w = b.mad(y,y,z);
b.storeF(arg, w);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float x = 2.0f;
// y = 2*2 + 2 = 6
// z = 6*2 + 6 = 18
// w = 6*6 + 18 = 54
program.eval(1, &x);
REPORTER_ASSERT(r, x == 54.0f);
});
}
DEF_TEST(SkVM_floor, r) {
skvm::Builder b;
{
skvm::Arg arg = b.varying<float>();
b.storeF(arg, b.floor(b.loadF(arg)));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float buf[] = { -2.0f, -1.5f, -1.0f, 0.0f, 1.0f, 1.5f, 2.0f };
float want[] = { -2.0f, -2.0f, -1.0f, 0.0f, 1.0f, 1.0f, 2.0f };
program.eval(SK_ARRAY_COUNT(buf), buf);
for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) {
REPORTER_ASSERT(r, buf[i] == want[i]);
}
});
}
DEF_TEST(SkVM_round, r) {
skvm::Builder b;
{
skvm::Arg src = b.varying<float>();
skvm::Arg dst = b.varying<int>();
b.store32(dst, b.round(b.loadF(src)));
}
// The test cases on exact 0.5f boundaries assume the current rounding mode is nearest even.
// We haven't explicitly guaranteed that here... it just probably is.
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float buf[] = { -1.5f, -0.5f, 0.0f, 0.5f, 0.2f, 0.6f, 1.0f, 1.4f, 1.5f, 2.0f };
int want[] = { -2 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 2 , 2 };
int dst[SK_ARRAY_COUNT(buf)];
program.eval(SK_ARRAY_COUNT(buf), buf, dst);
for (int i = 0; i < (int)SK_ARRAY_COUNT(dst); i++) {
REPORTER_ASSERT(r, dst[i] == want[i]);
}
});
}
DEF_TEST(SkVM_min, r) {
skvm::Builder b;
{
skvm::Arg src1 = b.varying<float>();
skvm::Arg src2 = b.varying<float>();
skvm::Arg dst = b.varying<float>();
b.storeF(dst, b.min(b.loadF(src1), b.loadF(src2)));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float s1[] = { 0.0f, 1.0f, 4.0f, -1.0f, -1.0f};
float s2[] = { 0.0f, 2.0f, 3.0f, 1.0f, -2.0f};
float want[] = { 0.0f, 1.0f, 3.0f, -1.0f, -2.0f};
float d[SK_ARRAY_COUNT(s1)];
program.eval(SK_ARRAY_COUNT(d), s1, s2, d);
for (int i = 0; i < (int)SK_ARRAY_COUNT(d); i++) {
REPORTER_ASSERT(r, d[i] == want[i]);
}
});
}
DEF_TEST(SkVM_max, r) {
skvm::Builder b;
{
skvm::Arg src1 = b.varying<float>();
skvm::Arg src2 = b.varying<float>();
skvm::Arg dst = b.varying<float>();
b.storeF(dst, b.max(b.loadF(src1), b.loadF(src2)));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
float s1[] = { 0.0f, 1.0f, 4.0f, -1.0f, -1.0f};
float s2[] = { 0.0f, 2.0f, 3.0f, 1.0f, -2.0f};
float want[] = { 0.0f, 2.0f, 4.0f, 1.0f, -1.0f};
float d[SK_ARRAY_COUNT(s1)];
program.eval(SK_ARRAY_COUNT(d), s1, s2, d);
for (int i = 0; i < (int)SK_ARRAY_COUNT(d); i++) {
REPORTER_ASSERT(r, d[i] == want[i]);
}
});
}
DEF_TEST(SkVM_hoist, r) {
// This program uses enough constants that it will fail to JIT if we hoist them.
// The JIT will try again without hoisting, and that'll just need 2 registers.
skvm::Builder b;
{
skvm::Arg arg = b.varying<int>();
skvm::I32 x = b.load32(arg);
for (int i = 0; i < 32; i++) {
x = b.add(x, b.splat(i));
}
b.store32(arg, x);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int x = 4;
program.eval(1, &x);
// x += 0 + 1 + 2 + 3 + ... + 30 + 31
// x += 496
REPORTER_ASSERT(r, x == 500);
});
}
DEF_TEST(SkVM_select, r) {
skvm::Builder b;
{
skvm::Arg buf = b.varying<int>();
skvm::I32 x = b.load32(buf);
x = b.select( b.gt(x, b.splat(4)), x, b.splat(42) );
b.store32(buf, x);
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int buf[] = { 0,1,2,3,4,5,6,7,8 };
program.eval(SK_ARRAY_COUNT(buf), buf);
for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) {
REPORTER_ASSERT(r, buf[i] == (i > 4 ? i : 42));
}
});
}
DEF_TEST(SkVM_NewOps, r) {
// Exercise a somewhat arbitrary set of new ops.
skvm::Builder b;
{
skvm::Arg buf = b.varying<int16_t>(),
uniforms = b.uniform();
skvm::I32 x = b.load16(buf);
const size_t kPtr = sizeof(const int*);
x = b.add(x, b.uniform32(uniforms, kPtr+0));
x = b.mul(x, b.uniform8 (uniforms, kPtr+4));
x = b.sub(x, b.uniform16(uniforms, kPtr+6));
skvm::I32 limit = b.uniform32(uniforms, kPtr+8);
x = b.select(b.lt(x, b.splat(0)), b.splat(0), x);
x = b.select(b.gt(x, limit ), limit , x);
x = b.gather8(uniforms,0, x);
b.store16(buf, x);
}
if ((false)) {
SkDynamicMemoryWStream buf;
dump(b, &buf);
sk_sp<SkData> blob = buf.detachAsData();
SkDebugf("%.*s\n", blob->size(), blob->data());
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
const int N = 31;
int16_t buf[N];
for (int i = 0; i < N; i++) {
buf[i] = i;
}
const int M = 16;
uint8_t img[M];
for (int i = 0; i < M; i++) {
img[i] = i*i;
}
struct {
const uint8_t* img;
int add = 5;
uint8_t mul = 3;
uint16_t sub = 18;
int limit = M-1;
} uniforms{img};
program.eval(N, buf, &uniforms);
for (int i = 0; i < N; i++) {
// Our first math calculates x = (i+5)*3 - 18 a.k.a 3*(i-1).
int x = 3*(i-1);
// Then that's pinned to the limits of img.
if (i < 2) { x = 0; } // Notice i == 1 hits x == 0 exactly...
if (i > 5) { x = 15; } // ...and i == 6 hits x == 15 exactly
REPORTER_ASSERT(r, buf[i] == img[x]);
}
});
}
DEF_TEST(SkVM_sqrt, r) {
skvm::Builder b;
auto buf = b.varying<int>();
b.storeF(buf, b.sqrt(b.loadF(buf)));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
constexpr int K = 17;
float buf[K];
for (int i = 0; i < K; i++) {
buf[i] = (float)(i*i);
}
// x^2 -> x
program.eval(K, buf);
for (int i = 0; i < K; i++) {
REPORTER_ASSERT(r, buf[i] == (float)i);
}
});
}
DEF_TEST(SkVM_MSAN, r) {
// This little memset32() program should be able to JIT, but if we run that
// JIT code in an MSAN build, it won't see the writes initialize buf. So
// this tests that we're using the interpreter instead.
skvm::Builder b;
b.store32(b.varying<int>(), b.splat(42));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
constexpr int K = 17;
int buf[K]; // Intentionally uninitialized.
program.eval(K, buf);
sk_msan_assert_initialized(buf, buf+K);
for (int x : buf) {
REPORTER_ASSERT(r, x == 42);
}
});
}
DEF_TEST(SkVM_assert, r) {
skvm::Builder b;
b.assert_true(b.lt(b.load32(b.varying<int>()),
b.splat(42)));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program) {
int buf[] = { 0,1,2,3,4,5,6,7,8,9 };
program.eval(SK_ARRAY_COUNT(buf), buf);
});
}
DEF_TEST(SkVM_premul, reporter) {
// Test that premul is short-circuited when alpha is known opaque.
{
skvm::Builder p;
auto rptr = p.varying<int>(),
aptr = p.varying<int>();
skvm::F32 r = p.loadF(rptr),
g = p.splat(0.0f),
b = p.splat(0.0f),
a = p.loadF(aptr);
p.premul(&r, &g, &b, a);
p.storeF(rptr, r);
// load red, load alpha, red *= alpha, store red
REPORTER_ASSERT(reporter, p.done().instructions().size() == 4);
}
{
skvm::Builder p;
auto rptr = p.varying<int>();
skvm::F32 r = p.loadF(rptr),
g = p.splat(0.0f),
b = p.splat(0.0f),
a = p.splat(1.0f);
p.premul(&r, &g, &b, a);
p.storeF(rptr, r);
// load red, store red
REPORTER_ASSERT(reporter, p.done().instructions().size() == 2);
}
// Same deal for unpremul.
{
skvm::Builder p;
auto rptr = p.varying<int>(),
aptr = p.varying<int>();
skvm::F32 r = p.loadF(rptr),
g = p.splat(0.0f),
b = p.splat(0.0f),
a = p.loadF(aptr);
p.unpremul(&r, &g, &b, a);
p.storeF(rptr, r);
// load red, load alpha, a bunch of unpremul instructions, store red
REPORTER_ASSERT(reporter, p.done().instructions().size() >= 4);
}
{
skvm::Builder p;
auto rptr = p.varying<int>();
skvm::F32 r = p.loadF(rptr),
g = p.splat(0.0f),
b = p.splat(0.0f),
a = p.splat(1.0f);
p.unpremul(&r, &g, &b, a);
p.storeF(rptr, r);
// load red, store red
REPORTER_ASSERT(reporter, p.done().instructions().size() == 2);
}
}
template <typename Fn>
static void test_asm(skiatest::Reporter* r, Fn&& fn, std::initializer_list<uint8_t> expected) {
uint8_t buf[4096];
skvm::Assembler a{buf};
fn(a);
REPORTER_ASSERT(r, a.size() == expected.size());
auto got = (const uint8_t*)buf,
want = expected.begin();
for (int i = 0; i < (int)std::min(a.size(), expected.size()); i++) {
REPORTER_ASSERT(r, got[i] == want[i],
"byte %d was %02x, want %02x", i, got[i], want[i]);
}
}
DEF_TEST(SkVM_Assembler, r) {
// Easiest way to generate test cases is
//
// echo '...some asm...' | llvm-mc -show-encoding -x86-asm-syntax=intel
//
// The -x86-asm-syntax=intel bit is optional, controlling the
// input syntax only; the output will always be AT&T op x,y,dst style.
// Our APIs read more like Intel op dst,x,y as op(dst,x,y), so I find
// that a bit easier to use here, despite maybe favoring AT&T overall.
using A = skvm::Assembler;
// Our exit strategy from AVX code.
test_asm(r, [&](A& a) {
a.int3();
a.vzeroupper();
a.ret();
},{
0xcc,
0xc5, 0xf8, 0x77,
0xc3,
});
// Align should pad with zero
test_asm(r, [&](A& a) {
a.ret();
a.align(4);
},{
0xc3,
0x00, 0x00, 0x00,
});
test_asm(r, [&](A& a) {
a.add(A::rax, 8); // Always good to test rax.
a.sub(A::rax, 32);
a.add(A::rdi, 12); // Last 0x48 REX
a.sub(A::rdi, 8);
a.add(A::r8 , 7); // First 0x49 REX
a.sub(A::r8 , 4);
a.add(A::rsi, 128); // Requires 4 byte immediate.
a.sub(A::r8 , 1000000);
a.add(A::Mem{A::rsi}, 7); // addq $7, (%rsi)
a.add(A::Mem{A::rsi, 12}, 7); // addq $7, 12(%rsi)
a.add(A::Mem{A::rsp, 12}, 7); // addq $7, 12(%rsp)
a.add(A::Mem{A::r12, 12}, 7); // addq $7, 12(%r12)
a.add(A::Mem{A::rsp, 12, A::rax, A::FOUR}, 7); // addq $7, 12(%rsp,%rax,4)
a.add(A::Mem{A::r12, 12, A::rax, A::FOUR}, 7); // addq $7, 12(%r12,%rax,4)
a.add(A::Mem{A::rax, 12, A::r12, A::FOUR}, 7); // addq $7, 12(%rax,%r12,4)
a.add(A::Mem{A::r11, 12, A::r8 , A::TWO }, 7); // addq $7, 12(%r11,%r8,2)
a.add(A::Mem{A::r11, 12, A::rax} , 7); // addq $7, 12(%r11,%rax)
a.add(A::Mem{A::rax, 12, A::r11} , 7); // addq $7, 12(%rax,%r11)
a.sub(A::Mem{A::rax, 12, A::r11} , 7); // subq $7, 12(%rax,%r11)
a.add( A::rax , A::rcx); // addq %rcx, %rax
a.add(A::Mem{A::rax} , A::rcx); // addq %rcx, (%rax)
a.add(A::Mem{A::rax, 12}, A::rcx); // addq %rcx, 12(%rax)
a.add(A::rcx, A::Mem{A::rax, 12}); // addq 12(%rax), %rcx
a.sub(A::rcx, A::Mem{A::rax, 12}); // subq 12(%rax), %rcx
},{
0x48, 0x83, 0b11'000'000, 0x08,
0x48, 0x83, 0b11'101'000, 0x20,
0x48, 0x83, 0b11'000'111, 0x0c,
0x48, 0x83, 0b11'101'111, 0x08,
0x49, 0x83, 0b11'000'000, 0x07,
0x49, 0x83, 0b11'101'000, 0x04,
0x48, 0x81, 0b11'000'110, 0x80, 0x00, 0x00, 0x00,
0x49, 0x81, 0b11'101'000, 0x40, 0x42, 0x0f, 0x00,
0x48,0x83,0x06,0x07,
0x48,0x83,0x46,0x0c,0x07,
0x48,0x83,0x44,0x24,0x0c,0x07,
0x49,0x83,0x44,0x24,0x0c,0x07,
0x48,0x83,0x44,0x84,0x0c,0x07,
0x49,0x83,0x44,0x84,0x0c,0x07,
0x4a,0x83,0x44,0xa0,0x0c,0x07,
0x4b,0x83,0x44,0x43,0x0c,0x07,
0x49,0x83,0x44,0x03,0x0c,0x07,
0x4a,0x83,0x44,0x18,0x0c,0x07,
0x4a,0x83,0x6c,0x18,0x0c,0x07,
0x48,0x01,0xc8,
0x48,0x01,0x08,
0x48,0x01,0x48,0x0c,
0x48,0x03,0x48,0x0c,
0x48,0x2b,0x48,0x0c,
});
test_asm(r, [&](A& a) {
a.vpaddd (A::ymm0, A::ymm1, A::ymm2); // Low registers and 0x0f map -> 2-byte VEX.
a.vpaddd (A::ymm8, A::ymm1, A::ymm2); // A high dst register is ok -> 2-byte VEX.
a.vpaddd (A::ymm0, A::ymm8, A::ymm2); // A high first argument register -> 2-byte VEX.
a.vpaddd (A::ymm0, A::ymm1, A::ymm8); // A high second argument -> 3-byte VEX.
a.vpmulld(A::ymm0, A::ymm1, A::ymm2); // Using non-0x0f map instruction -> 3-byte VEX.
a.vpsubd (A::ymm0, A::ymm1, A::ymm2); // Test vpsubd to ensure argument order is right.
},{
/* VEX */ /*op*/ /*modRM*/
0xc5, 0xf5, 0xfe, 0xc2,
0xc5, 0x75, 0xfe, 0xc2,
0xc5, 0xbd, 0xfe, 0xc2,
0xc4, 0xc1, 0x75, 0xfe, 0xc0,
0xc4, 0xe2, 0x75, 0x40, 0xc2,
0xc5, 0xf5, 0xfa, 0xc2,
});
test_asm(r, [&](A& a) {
a.vpaddw (A::ymm4, A::ymm3, A::ymm2);
a.vpavgw (A::ymm4, A::ymm3, A::ymm2);
a.vpcmpeqw (A::ymm4, A::ymm3, A::ymm2);
a.vpcmpgtw (A::ymm4, A::ymm3, A::ymm2);
a.vpminsw (A::ymm4, A::ymm3, A::ymm2);
a.vpmaxsw (A::ymm4, A::ymm3, A::ymm2);
a.vpminuw (A::ymm4, A::ymm3, A::ymm2);
a.vpmaxuw (A::ymm4, A::ymm3, A::ymm2);
a.vpmulhrsw(A::ymm4, A::ymm3, A::ymm2);
a.vpabsw (A::ymm4, A::ymm3);
a.vpsllw (A::ymm4, A::ymm3, 12);
a.vpsraw (A::ymm4, A::ymm3, 12);
},{
0xc5, 0xe5, 0xfd, 0xe2,
0xc5, 0xe5, 0xe3, 0xe2,
0xc5, 0xe5, 0x75, 0xe2,
0xc5, 0xe5, 0x65, 0xe2,
0xc5, 0xe5, 0xea, 0xe2,
0xc5, 0xe5, 0xee, 0xe2,
0xc4,0xe2,0x65, 0x3a, 0xe2,
0xc4,0xe2,0x65, 0x3e, 0xe2,
0xc4,0xe2,0x65, 0x0b, 0xe2,
0xc4,0xe2,0x7d, 0x1d, 0xe3,
0xc5,0xdd,0x71, 0xf3, 0x0c,
0xc5,0xdd,0x71, 0xe3, 0x0c,
});
test_asm(r, [&](A& a) {
A::Label l;
a.vcmpeqps (A::ymm0, A::ymm1, &l); // vcmpeqps 0x1c(%rip), %ymm1, %ymm0
a.vpcmpeqd (A::ymm0, A::ymm1, A::ymm2);
a.vpcmpgtd (A::ymm0, A::ymm1, A::ymm2);
a.vcmpeqps (A::ymm0, A::ymm1, A::ymm2);
a.vcmpltps (A::ymm0, A::ymm1, A::ymm2);
a.vcmpleps (A::ymm0, A::ymm1, A::ymm2);
a.vcmpneqps(A::ymm0, A::ymm1, A::ymm2);
a.label(&l); // 28 bytes after the vcmpeqps that uses it.
},{
0xc5,0xf4,0xc2,0x05,0x1c,0x00,0x00,0x00,0x00,
0xc5,0xf5,0x76,0xc2,
0xc5,0xf5,0x66,0xc2,
0xc5,0xf4,0xc2,0xc2,0x00,
0xc5,0xf4,0xc2,0xc2,0x01,
0xc5,0xf4,0xc2,0xc2,0x02,
0xc5,0xf4,0xc2,0xc2,0x04,
});
test_asm(r, [&](A& a) {
a.vminps(A::ymm0, A::ymm1, A::ymm2);
a.vmaxps(A::ymm0, A::ymm1, A::ymm2);
},{
0xc5,0xf4,0x5d,0xc2,
0xc5,0xf4,0x5f,0xc2,
});
test_asm(r, [&](A& a) {
a.vpblendvb(A::ymm0, A::ymm1, A::ymm2, A::ymm3);
},{
0xc4,0xe3,0x75, 0x4c, 0xc2, 0x30,
});
test_asm(r, [&](A& a) {
a.vpsrld(A::ymm15, A::ymm2, 8);
a.vpsrld(A::ymm0 , A::ymm8, 5);
},{
0xc5, 0x85, 0x72,0xd2, 0x08,
0xc4,0xc1,0x7d, 0x72,0xd0, 0x05,
});
test_asm(r, [&](A& a) {
A::Label l;
a.vpermps(A::ymm1, A::ymm2, A::Mem{A::rdi, 32});
a.vperm2f128(A::ymm1, A::ymm2, &l, 0x20);
a.vpermq(A::ymm1, A::ymm2, 5);
a.label(&l); // 6 bytes after vperm2f128
},{
0xc4,0xe2,0x6d,0x16,0x4f,0x20,
0xc4,0xe3,0x6d,0x06,0x0d,0x06,0x00,0x00,0x00,0x20,
0xc4,0xe3,0xfd, 0x00,0xca, 0x05,
});
test_asm(r, [&](A& a) {
a.vpunpckldq(A::ymm1, A::ymm2, A::Mem{A::rdi});
a.vpunpckhdq(A::ymm1, A::ymm2, A::ymm3);
},{
0xc5,0xed,0x62,0x0f,
0xc5,0xed,0x6a,0xcb,
});
test_asm(r, [&](A& a) {
a.vroundps(A::ymm1, A::ymm2, A::NEAREST);
a.vroundps(A::ymm1, A::ymm2, A::FLOOR);
a.vroundps(A::ymm1, A::ymm2, A::CEIL);
a.vroundps(A::ymm1, A::ymm2, A::TRUNC);
},{
0xc4,0xe3,0x7d,0x08,0xca,0x00,
0xc4,0xe3,0x7d,0x08,0xca,0x01,
0xc4,0xe3,0x7d,0x08,0xca,0x02,
0xc4,0xe3,0x7d,0x08,0xca,0x03,
});
test_asm(r, [&](A& a) {
A::Label l;
a.label(&l);
a.byte(1);
a.byte(2);
a.byte(3);
a.byte(4);
a.vbroadcastss(A::ymm0 , &l);
a.vbroadcastss(A::ymm1 , &l);
a.vbroadcastss(A::ymm8 , &l);
a.vbroadcastss(A::ymm15, &l);
a.vpshufb(A::ymm4, A::ymm3, &l);
a.vpaddd (A::ymm4, A::ymm3, &l);
a.vpsubd (A::ymm4, A::ymm3, &l);
a.vptest(A::ymm4, &l);
a.vmulps (A::ymm4, A::ymm3, &l);
},{
0x01, 0x02, 0x03, 0x4,
/* VEX */ /*op*/ /* ModRM */ /* offset */
0xc4, 0xe2, 0x7d, 0x18, 0b00'000'101, 0xf3,0xff,0xff,0xff, // 0xfffffff3 == -13
0xc4, 0xe2, 0x7d, 0x18, 0b00'001'101, 0xea,0xff,0xff,0xff, // 0xffffffea == -22
0xc4, 0x62, 0x7d, 0x18, 0b00'000'101, 0xe1,0xff,0xff,0xff, // 0xffffffe1 == -31
0xc4, 0x62, 0x7d, 0x18, 0b00'111'101, 0xd8,0xff,0xff,0xff, // 0xffffffd8 == -40
0xc4, 0xe2, 0x65, 0x00, 0b00'100'101, 0xcf,0xff,0xff,0xff, // 0xffffffcf == -49
0xc5, 0xe5, 0xfe, 0b00'100'101, 0xc7,0xff,0xff,0xff, // 0xffffffc7 == -57
0xc5, 0xe5, 0xfa, 0b00'100'101, 0xbf,0xff,0xff,0xff, // 0xffffffbf == -65
0xc4, 0xe2, 0x7d, 0x17, 0b00'100'101, 0xb6,0xff,0xff,0xff, // 0xffffffb6 == -74
0xc5, 0xe4, 0x59, 0b00'100'101, 0xae,0xff,0xff,0xff, // 0xffffffaf == -82
});
test_asm(r, [&](A& a) {
a.vbroadcastss(A::ymm0, A::Mem{A::rdi, 0});
a.vbroadcastss(A::ymm13, A::Mem{A::r14, 7});
a.vbroadcastss(A::ymm8, A::Mem{A::rdx, -12});
a.vbroadcastss(A::ymm8, A::Mem{A::rdx, 400});
a.vbroadcastss(A::ymm8, A::xmm0);
a.vbroadcastss(A::ymm0, A::xmm13);
},{
/* VEX */ /*op*/ /*ModRM*/ /*offset*/
0xc4,0xe2,0x7d, 0x18, 0b00'000'111,
0xc4,0x42,0x7d, 0x18, 0b01'101'110, 0x07,
0xc4,0x62,0x7d, 0x18, 0b01'000'010, 0xf4,
0xc4,0x62,0x7d, 0x18, 0b10'000'010, 0x90,0x01,0x00,0x00,
0xc4,0x62,0x7d, 0x18, 0b11'000'000,
0xc4,0xc2,0x7d, 0x18, 0b11'000'101,
});
test_asm(r, [&](A& a) {
A::Label l;
a.label(&l);
a.jne(&l);
a.jne(&l);
a.je (&l);
a.jmp(&l);
a.jl (&l);
a.jc (&l);
a.cmp(A::rdx, 1);
a.cmp(A::rax, 12);
a.cmp(A::r14, 2000000000);
},{
0x0f,0x85, 0xfa,0xff,0xff,0xff, // near jne -6 bytes
0x0f,0x85, 0xf4,0xff,0xff,0xff, // near jne -12 bytes
0x0f,0x84, 0xee,0xff,0xff,0xff, // near je -18 bytes
0xe9, 0xe9,0xff,0xff,0xff, // near jmp -23 bytes
0x0f,0x8c, 0xe3,0xff,0xff,0xff, // near jl -29 bytes
0x0f,0x82, 0xdd,0xff,0xff,0xff, // near jc -35 bytes
0x48,0x83,0xfa,0x01,
0x48,0x83,0xf8,0x0c,
0x49,0x81,0xfe,0x00,0x94,0x35,0x77,
});
test_asm(r, [&](A& a) {
a.vmovups(A::ymm5, A::Mem{A::rsi});
a.vmovups(A::Mem{A::rsi}, A::ymm5);
a.vmovups(A::xmm5, A::Mem{A::rsi});
a.vmovups(A::Mem{A::rsi}, A::xmm5);
a.vpmovzxwd(A::ymm4, A::Mem{A::rsi});
a.vpmovzxbd(A::ymm4, A::Mem{A::rsi});
a.vmovq(A::Mem{A::rdx}, A::xmm15);
},{
/* VEX */ /*Op*/ /* ModRM */
0xc5, 0xfc, 0x10, 0b00'101'110,
0xc5, 0xfc, 0x11, 0b00'101'110,
0xc5, 0xf8, 0x10, 0b00'101'110,
0xc5, 0xf8, 0x11, 0b00'101'110,
0xc4,0xe2,0x7d, 0x33, 0b00'100'110,
0xc4,0xe2,0x7d, 0x31, 0b00'100'110,
0xc5, 0x79, 0xd6, 0b00'111'010,
});
test_asm(r, [&](A& a) {
a.vmovups(A::ymm5, A::Mem{A::rsp, 0});
a.vmovups(A::ymm5, A::Mem{A::rsp, 64});
a.vmovups(A::ymm5, A::Mem{A::rsp,128});
a.vmovups(A::Mem{A::rsp, 0}, A::ymm5);
a.vmovups(A::Mem{A::rsp, 64}, A::ymm5);
a.vmovups(A::Mem{A::rsp,128}, A::ymm5);
},{
0xc5,0xfc,0x10,0x2c,0x24,
0xc5,0xfc,0x10,0x6c,0x24,0x40,
0xc5,0xfc,0x10,0xac,0x24,0x80,0x00,0x00,0x00,
0xc5,0xfc,0x11,0x2c,0x24,
0xc5,0xfc,0x11,0x6c,0x24,0x40,
0xc5,0xfc,0x11,0xac,0x24,0x80,0x00,0x00,0x00,
});
test_asm(r, [&](A& a) {
a.movzbq(A::rax, A::Mem{A::rsi}); // Low registers for src and dst.
a.movzbq(A::rax, A::Mem{A::r8,}); // High src register.
a.movzbq(A::r8 , A::Mem{A::rsi}); // High dst register.
a.movzbq(A::r8, A::Mem{A::rsi, 12});
a.movzbq(A::r8, A::Mem{A::rsi, 400});
a.movzwq(A::rax, A::Mem{A::rsi}); // Low registers for src and dst.
a.movzwq(A::rax, A::Mem{A::r8,}); // High src register.
a.movzwq(A::r8 , A::Mem{A::rsi}); // High dst register.
a.movzwq(A::r8, A::Mem{A::rsi, 12});
a.movzwq(A::r8, A::Mem{A::rsi, 400});
a.vmovd(A::Mem{A::rax}, A::xmm0);
a.vmovd(A::Mem{A::rax}, A::xmm8);
a.vmovd(A::Mem{A::r8 }, A::xmm0);
a.vmovd(A::xmm0, A::Mem{A::rax});
a.vmovd(A::xmm8, A::Mem{A::rax});
a.vmovd(A::xmm0, A::Mem{A::r8 });
a.vmovd(A::xmm0 , A::Mem{A::rax, 0, A::rcx, A::FOUR});
a.vmovd(A::xmm15, A::Mem{A::rax, 0, A::r8, A::TWO });
a.vmovd(A::xmm0 , A::Mem{A::r8 , 0, A::rcx});
a.vmovd(A::rax, A::xmm0);
a.vmovd(A::rax, A::xmm8);
a.vmovd(A::r8 , A::xmm0);
a.vmovd(A::xmm0, A::rax);
a.vmovd(A::xmm8, A::rax);
a.vmovd(A::xmm0, A::r8 );
a.movb(A::Mem{A::rdx}, A::rax);
a.movb(A::Mem{A::rdx}, A::r8 );
a.movb(A::Mem{A::r8 }, A::rax);
a.movb(A::rdx, A::Mem{A::rax});
a.movb(A::rdx, A::Mem{A::r8 });
a.movb(A::r8 , A::Mem{A::rax});
a.movb(A::rdx, 12);
a.movb(A::rax, 4);
a.movb(A::r8 , -1);
a.movb(A::Mem{A::rdx}, 12);
a.movb(A::Mem{A::rax}, 4);
a.movb(A::Mem{A::r8 }, -1);
},{
0x48,0x0f,0xb6,0x06, // movzbq (%rsi), %rax
0x49,0x0f,0xb6,0x00,
0x4c,0x0f,0xb6,0x06,
0x4c,0x0f,0xb6,0x46, 12,
0x4c,0x0f,0xb6,0x86, 0x90,0x01,0x00,0x00,
0x48,0x0f,0xb7,0x06, // movzwq (%rsi), %rax
0x49,0x0f,0xb7,0x00,
0x4c,0x0f,0xb7,0x06,
0x4c,0x0f,0xb7,0x46, 12,
0x4c,0x0f,0xb7,0x86, 0x90,0x01,0x00,0x00,
0xc5,0xf9,0x7e,0x00,
0xc5,0x79,0x7e,0x00,
0xc4,0xc1,0x79,0x7e,0x00,
0xc5,0xf9,0x6e,0x00,
0xc5,0x79,0x6e,0x00,
0xc4,0xc1,0x79,0x6e,0x00,
0xc5,0xf9,0x6e,0x04,0x88,
0xc4,0x21,0x79,0x6e,0x3c,0x40,
0xc4,0xc1,0x79,0x6e,0x04,0x08,
0xc5,0xf9,0x7e,0xc0,
0xc5,0x79,0x7e,0xc0,
0xc4,0xc1,0x79,0x7e,0xc0,
0xc5,0xf9,0x6e,0xc0,
0xc5,0x79,0x6e,0xc0,
0xc4,0xc1,0x79,0x6e,0xc0,
0x48 ,0x88, 0x02,
0x4c, 0x88, 0x02,
0x49, 0x88, 0x00,
0x48 ,0x8a, 0x10,
0x49, 0x8a, 0x10,
0x4c, 0x8a, 0x00,
0x48, 0xc6, 0xc2, 0x0c,
0x48, 0xc6, 0xc0, 0x04,
0x49, 0xc6, 0xc0, 0xff,
0x48, 0xc6, 0x02, 0x0c,
0x48, 0xc6, 0x00, 0x04,
0x49, 0xc6, 0x00, 0xff,
});
test_asm(r, [&](A& a) {
a.vpinsrd(A::xmm1, A::xmm8, A::Mem{A::rsi}, 1); // vpinsrd $1, (%rsi), %xmm8, %xmm1
a.vpinsrd(A::xmm8, A::xmm1, A::Mem{A::r8 }, 3); // vpinsrd $3, (%r8), %xmm1, %xmm8;
a.vpinsrw(A::xmm1, A::xmm8, A::Mem{A::rsi}, 4); // vpinsrw $4, (%rsi), %xmm8, %xmm1
a.vpinsrw(A::xmm8, A::xmm1, A::Mem{A::r8 }, 12); // vpinrsw $12, (%r8), %xmm1, %xmm8
a.vpinsrb(A::xmm1, A::xmm8, A::Mem{A::rsi}, 4); // vpinsrb $4, (%rsi), %xmm8, %xmm1
a.vpinsrb(A::xmm8, A::xmm1, A::Mem{A::r8 }, 12); // vpinsrb $12, (%r8), %xmm1, %xmm8
a.vextracti128(A::xmm1, A::ymm8, 1); // vextracti128 $1, %ymm8, %xmm1
a.vextracti128(A::xmm8, A::ymm1, 0); // vextracti128 $0, %ymm1, %xmm8
a.vpextrd(A::Mem{A::rsi}, A::xmm8, 3); // vpextrd $3, %xmm8, (%rsi)
a.vpextrd(A::Mem{A::r8 }, A::xmm1, 2); // vpextrd $2, %xmm1, (%r8)
a.vpextrw(A::Mem{A::rsi}, A::xmm8, 7);
a.vpextrw(A::Mem{A::r8 }, A::xmm1, 15);
a.vpextrb(A::Mem{A::rsi}, A::xmm8, 7);
a.vpextrb(A::Mem{A::r8 }, A::xmm1, 15);
},{
0xc4,0xe3,0x39, 0x22, 0x0e, 1,
0xc4,0x43,0x71, 0x22, 0x00, 3,
0xc5,0xb9, 0xc4, 0x0e, 4,
0xc4,0x41,0x71, 0xc4, 0x00, 12,
0xc4,0xe3,0x39, 0x20, 0x0e, 4,
0xc4,0x43,0x71, 0x20, 0x00, 12,
0xc4,0x63,0x7d,0x39,0xc1, 1,
0xc4,0xc3,0x7d,0x39,0xc8, 0,
0xc4,0x63,0x79,0x16,0x06, 3,
0xc4,0xc3,0x79,0x16,0x08, 2,
0xc4,0x63,0x79, 0x15, 0x06, 7,
0xc4,0xc3,0x79, 0x15, 0x08, 15,
0xc4,0x63,0x79, 0x14, 0x06, 7,
0xc4,0xc3,0x79, 0x14, 0x08, 15,
});
test_asm(r, [&](A& a) {
a.vpandn(A::ymm3, A::ymm12, A::ymm2);
},{
0xc5, 0x9d, 0xdf, 0xda,
});
test_asm(r, [&](A& a) {
A::Label l;
a.vmovdqa(A::ymm3, A::ymm2); // vmovdqa %ymm2 , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi}); // vmovdqa (%rsi) , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsp}); // vmovdqa (%rsp) , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::r11}); // vmovdqa (%r11) , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 4}); // vmovdqa 4(%rsi) , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsp, 4}); // vmovdqa 4(%rsp) , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 4, A::rax, A::EIGHT}); // vmovdqa 4(%rsi,%rax,8), %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::r11, 4, A::rax, A::TWO }); // vmovdqa 4(%r11,%rax,2), %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 4, A::r11, A::FOUR }); // vmovdqa 4(%rsi,%r11,4), %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 4, A::r11, A::ONE }); // vmovdqa 4(%rsi,%r11,1), %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 4, A::r11}); // vmovdqa 4(%rsi,%r11) , %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 64, A::r11}); // vmovdqa 64(%rsi,%r11), %ymm3
a.vmovdqa(A::ymm3, A::Mem{A::rsi, 128, A::r11}); // vmovdqa 128(%rsi,%r11), %ymm3
a.vmovdqa(A::ymm3, &l); // vmovdqa 16(%rip) , %ymm3
a.vcvttps2dq(A::ymm3, A::ymm2);
a.vcvtdq2ps (A::ymm3, A::ymm2);
a.vcvtps2dq (A::ymm3, A::ymm2);
a.vsqrtps (A::ymm3, A::ymm2);
a.label(&l);
},{
0xc5,0xfd,0x6f,0xda,
0xc5,0xfd,0x6f,0x1e,
0xc5,0xfd,0x6f,0x1c,0x24,
0xc4,0xc1,0x7d,0x6f,0x1b,
0xc5,0xfd,0x6f,0x5e,0x04,
0xc5,0xfd,0x6f,0x5c,0x24,0x04,
0xc5,0xfd,0x6f,0x5c,0xc6,0x04,
0xc4,0xc1,0x7d,0x6f,0x5c,0x43,0x04,
0xc4,0xa1,0x7d,0x6f,0x5c,0x9e,0x04,
0xc4,0xa1,0x7d,0x6f,0x5c,0x1e,0x04,
0xc4,0xa1,0x7d,0x6f,0x5c,0x1e,0x04,
0xc4,0xa1,0x7d,0x6f,0x5c,0x1e,0x40,
0xc4,0xa1,0x7d,0x6f,0x9c,0x1e,0x80,0x00,0x00,0x00,
0xc5,0xfd,0x6f,0x1d,0x10,0x00,0x00,0x00,
0xc5,0xfe,0x5b,0xda,
0xc5,0xfc,0x5b,0xda,
0xc5,0xfd,0x5b,0xda,
0xc5,0xfc,0x51,0xda,
});
test_asm(r, [&](A& a) {
a.vcvtps2ph(A::xmm3, A::ymm2, A::CURRENT);
a.vcvtps2ph(A::Mem{A::rsi, 32, A::rax, A::EIGHT}, A::ymm5, A::CEIL);
a.vcvtph2ps(A::ymm15, A::Mem{A::rdi, 12, A::r9, A::ONE});
a.vcvtph2ps(A::ymm2, A::xmm3);
},{
0xc4,0xe3,0x7d,0x1d,0xd3,0x04,
0xc4,0xe3,0x7d,0x1d,0x6c,0xc6,0x20,0x02,
0xc4,0x22,0x7d,0x13,0x7c,0x0f,0x0c,
0xc4,0xe2,0x7d,0x13,0xd3,
});
test_asm(r, [&](A& a) {
a.vgatherdps(A::ymm1 , A::FOUR , A::ymm0 , A::rdi, A::ymm2 );
a.vgatherdps(A::ymm0 , A::ONE , A::ymm2 , A::rax, A::ymm1 );
a.vgatherdps(A::ymm10, A::ONE , A::ymm2 , A::rax, A::ymm1 );
a.vgatherdps(A::ymm0 , A::ONE , A::ymm12, A::rax, A::ymm1 );
a.vgatherdps(A::ymm0 , A::ONE , A::ymm2 , A::r9 , A::ymm1 );
a.vgatherdps(A::ymm0 , A::ONE , A::ymm2 , A::rax, A::ymm12);
a.vgatherdps(A::ymm0 , A::EIGHT, A::ymm2 , A::rax, A::ymm12);
},{
0xc4,0xe2,0x6d,0x92,0x0c,0x87,
0xc4,0xe2,0x75,0x92,0x04,0x10,
0xc4,0x62,0x75,0x92,0x14,0x10,
0xc4,0xa2,0x75,0x92,0x04,0x20,
0xc4,0xc2,0x75,0x92,0x04,0x11,
0xc4,0xe2,0x1d,0x92,0x04,0x10,
0xc4,0xe2,0x1d,0x92,0x04,0xd0,
});
test_asm(r, [&](A& a) {
a.mov(A::rax, A::Mem{A::rdi, 0});
a.mov(A::rax, A::Mem{A::rdi, 1});
a.mov(A::rax, A::Mem{A::rdi, 512});
a.mov(A::r15, A::Mem{A::r13, 42});
a.mov(A::rax, A::Mem{A::r13, 42});
a.mov(A::r15, A::Mem{A::rax, 42});
a.mov(A::rax, 1);
a.mov(A::rax, A::rcx);
},{
0x48, 0x8b, 0x07,
0x48, 0x8b, 0x47, 0x01,
0x48, 0x8b, 0x87, 0x00,0x02,0x00,0x00,
0x4d, 0x8b, 0x7d, 0x2a,
0x49, 0x8b, 0x45, 0x2a,
0x4c, 0x8b, 0x78, 0x2a,
0x48, 0xc7, 0xc0, 0x01,0x00,0x00,0x00,
0x48, 0x89, 0xc8,
});
// echo "fmul v4.4s, v3.4s, v1.4s" | llvm-mc -show-encoding -arch arm64
test_asm(r, [&](A& a) {
a.and16b(A::v4, A::v3, A::v1);
a.orr16b(A::v4, A::v3, A::v1);
a.eor16b(A::v4, A::v3, A::v1);
a.bic16b(A::v4, A::v3, A::v1);
a.bsl16b(A::v4, A::v3, A::v1);
a.not16b(A::v4, A::v3);
a.add4s(A::v4, A::v3, A::v1);
a.sub4s(A::v4, A::v3, A::v1);
a.mul4s(A::v4, A::v3, A::v1);
a.cmeq4s(A::v4, A::v3, A::v1);
a.cmgt4s(A::v4, A::v3, A::v1);
a.sub8h(A::v4, A::v3, A::v1);
a.mul8h(A::v4, A::v3, A::v1);
a.fadd4s(A::v4, A::v3, A::v1);
a.fsub4s(A::v4, A::v3, A::v1);
a.fmul4s(A::v4, A::v3, A::v1);
a.fdiv4s(A::v4, A::v3, A::v1);
a.fmin4s(A::v4, A::v3, A::v1);
a.fmax4s(A::v4, A::v3, A::v1);
a.fneg4s(A::v4, A::v3);
a.fmla4s(A::v4, A::v3, A::v1);
a.fmls4s(A::v4, A::v3, A::v1);
a.fcmeq4s(A::v4, A::v3, A::v1);
a.fcmgt4s(A::v4, A::v3, A::v1);
a.fcmge4s(A::v4, A::v3, A::v1);
},{
0x64,0x1c,0x21,0x4e,
0x64,0x1c,0xa1,0x4e,
0x64,0x1c,0x21,0x6e,
0x64,0x1c,0x61,0x4e,
0x64,0x1c,0x61,0x6e,
0x64,0x58,0x20,0x6e,
0x64,0x84,0xa1,0x4e,
0x64,0x84,0xa1,0x6e,
0x64,0x9c,0xa1,0x4e,
0x64,0x8c,0xa1,0x6e,
0x64,0x34,0xa1,0x4e,
0x64,0x84,0x61,0x6e,
0x64,0x9c,0x61,0x4e,
0x64,0xd4,0x21,0x4e,
0x64,0xd4,0xa1,0x4e,
0x64,0xdc,0x21,0x6e,
0x64,0xfc,0x21,0x6e,
0x64,0xf4,0xa1,0x4e,
0x64,0xf4,0x21,0x4e,
0x64,0xf8,0xa0,0x6e,
0x64,0xcc,0x21,0x4e,
0x64,0xcc,0xa1,0x4e,
0x64,0xe4,0x21,0x4e,
0x64,0xe4,0xa1,0x6e,
0x64,0xe4,0x21,0x6e,
});
test_asm(r, [&](A& a) {
a.shl4s(A::v4, A::v3, 0);
a.shl4s(A::v4, A::v3, 1);
a.shl4s(A::v4, A::v3, 8);
a.shl4s(A::v4, A::v3, 16);
a.shl4s(A::v4, A::v3, 31);
a.sshr4s(A::v4, A::v3, 1);
a.sshr4s(A::v4, A::v3, 8);
a.sshr4s(A::v4, A::v3, 31);
a.ushr4s(A::v4, A::v3, 1);
a.ushr4s(A::v4, A::v3, 8);
a.ushr4s(A::v4, A::v3, 31);
a.ushr8h(A::v4, A::v3, 1);
a.ushr8h(A::v4, A::v3, 8);
a.ushr8h(A::v4, A::v3, 15);
},{
0x64,0x54,0x20,0x4f,
0x64,0x54,0x21,0x4f,
0x64,0x54,0x28,0x4f,
0x64,0x54,0x30,0x4f,
0x64,0x54,0x3f,0x4f,
0x64,0x04,0x3f,0x4f,
0x64,0x04,0x38,0x4f,
0x64,0x04,0x21,0x4f,
0x64,0x04,0x3f,0x6f,
0x64,0x04,0x38,0x6f,
0x64,0x04,0x21,0x6f,
0x64,0x04,0x1f,0x6f,
0x64,0x04,0x18,0x6f,
0x64,0x04,0x11,0x6f,
});
test_asm(r, [&](A& a) {
a.sli4s(A::v4, A::v3, 0);
a.sli4s(A::v4, A::v3, 1);
a.sli4s(A::v4, A::v3, 8);
a.sli4s(A::v4, A::v3, 16);
a.sli4s(A::v4, A::v3, 31);
},{
0x64,0x54,0x20,0x6f,
0x64,0x54,0x21,0x6f,
0x64,0x54,0x28,0x6f,
0x64,0x54,0x30,0x6f,
0x64,0x54,0x3f,0x6f,
});
test_asm(r, [&](A& a) {
a.scvtf4s (A::v4, A::v3);
a.fcvtzs4s(A::v4, A::v3);
a.fcvtns4s(A::v4, A::v3);
},{
0x64,0xd8,0x21,0x4e,
0x64,0xb8,0xa1,0x4e,
0x64,0xa8,0x21,0x4e,
});
test_asm(r, [&](A& a) {
a.sub (A::sp, A::sp, 32); // sub sp, sp, #32
a.strq(A::v0, A::sp, 1); // str q0, [sp, #16]
a.strq(A::v1, A::sp); // str q1, [sp]
a.strs(A::v0, A::sp, 6); // str s0, [sp, #24]
a.strb(A::v0, A::sp, 47); // str b0, [sp, #47]
a.ldrb(A::v9, A::sp, 42); // ldr b9, [sp, #42]
a.ldrs(A::v7, A::sp, 10); // ldr s7, [sp, #40]
a.ldrq(A::v5, A::sp, 128); // ldr q5, [sp, #2048]
a.add (A::sp, A::sp, 32); // add sp, sp, #32
},{
0xff,0x83,0x00,0xd1,
0xe0,0x07,0x80,0x3d,
0xe1,0x03,0x80,0x3d,
0xe0,0x1b,0x00,0xbd,
0xe0,0xbf,0x00,0x3d,
0xe9,0xab,0x40,0x3d,
0xe7,0x2b,0x40,0xbd,
0xe5,0x03,0xc2,0x3d,
0xff,0x83,0x00,0x91,
});
test_asm(r, [&](A& a) {
a.brk(0);
a.brk(65535);
a.ret(A::x30); // Conventional ret using link register.
a.ret(A::x13); // Can really return using any register if we like.
a.add(A::x2, A::x2, 4);
a.add(A::x3, A::x2, 32);
a.sub(A::x2, A::x2, 4);
a.sub(A::x3, A::x2, 32);
a.subs(A::x2, A::x2, 4);
a.subs(A::x3, A::x2, 32);
a.subs(A::xzr, A::x2, 4); // These are actually the same instruction!
a.cmp(A::x2, 4);
A::Label l;
a.label(&l);
a.bne(&l);
a.bne(&l);
a.blt(&l);
a.b(&l);
a.cbnz(A::x2, &l);
a.cbz(A::x2, &l);
},{
0x00,0x00,0x20,0xd4,
0xe0,0xff,0x3f,0xd4,
0xc0,0x03,0x5f,0xd6,
0xa0,0x01,0x5f,0xd6,
0x42,0x10,0x00,0x91,
0x43,0x80,0x00,0x91,
0x42,0x10,0x00,0xd1,
0x43,0x80,0x00,0xd1,
0x42,0x10,0x00,0xf1,
0x43,0x80,0x00,0xf1,
0x5f,0x10,0x00,0xf1,
0x5f,0x10,0x00,0xf1,
0x01,0x00,0x00,0x54, // b.ne #0
0xe1,0xff,0xff,0x54, // b.ne #-4
0xcb,0xff,0xff,0x54, // b.lt #-8
0xae,0xff,0xff,0x54, // b.al #-12
0x82,0xff,0xff,0xb5, // cbnz x2, #-16
0x62,0xff,0xff,0xb4, // cbz x2, #-20
});
// Can we cbz() to a not-yet-defined label?
test_asm(r, [&](A& a) {
A::Label l;
a.cbz(A::x2, &l);
a.add(A::x3, A::x2, 32);
a.label(&l);
a.ret(A::x30);
},{
0x42,0x00,0x00,0xb4, // cbz x2, #8
0x43,0x80,0x00,0x91, // add x3, x2, #32
0xc0,0x03,0x5f,0xd6, // ret
});
// If we start a label as a backward label,
// can we redefine it to be a future label?
// (Not sure this is useful... just want to test it works.)
test_asm(r, [&](A& a) {
A::Label l1;
a.label(&l1);
a.add(A::x3, A::x2, 32);
a.cbz(A::x2, &l1); // This will jump backward... nothing sneaky.
A::Label l2; // Start off the same...
a.label(&l2);
a.add(A::x3, A::x2, 32);
a.cbz(A::x2, &l2); // Looks like this will go backward...
a.add(A::x2, A::x2, 4);
a.add(A::x3, A::x2, 32);
a.label(&l2); // But no... actually forward! What a switcheroo!
},{
0x43,0x80,0x00,0x91, // add x3, x2, #32
0xe2,0xff,0xff,0xb4, // cbz x2, #-4
0x43,0x80,0x00,0x91, // add x3, x2, #32
0x62,0x00,0x00,0xb4, // cbz x2, #12
0x42,0x10,0x00,0x91, // add x2, x2, #4
0x43,0x80,0x00,0x91, // add x3, x2, #32
});
// Loading from a label on ARM.
test_asm(r, [&](A& a) {
A::Label fore,aft;
a.label(&fore);
a.word(0x01234567);
a.ldrq(A::v1, &fore);
a.ldrq(A::v2, &aft);
a.label(&aft);
a.word(0x76543210);
},{
0x67,0x45,0x23,0x01,
0xe1,0xff,0xff,0x9c, // ldr q1, #-4
0x22,0x00,0x00,0x9c, // ldr q2, #4
0x10,0x32,0x54,0x76,
});
test_asm(r, [&](A& a) {
a.ldrq(A::v0, A::x8);
a.strq(A::v0, A::x8);
},{
0x00,0x01,0xc0,0x3d,
0x00,0x01,0x80,0x3d,
});
test_asm(r, [&](A& a) {
a.xtns2h(A::v0, A::v0);
a.xtnh2b(A::v0, A::v0);
a.strs (A::v0, A::x0);
a.ldrs (A::v0, A::x0);
a.uxtlb2h(A::v0, A::v0);
a.uxtlh2s(A::v0, A::v0);
a.uminv4s(A::v3, A::v4);
a.fmovs (A::x3, A::v4); // fmov w3,s4
},{
0x00,0x28,0x61,0x0e,
0x00,0x28,0x21,0x0e,
0x00,0x00,0x00,0xbd,
0x00,0x00,0x40,0xbd,
0x00,0xa4,0x08,0x2f,
0x00,0xa4,0x10,0x2f,
0x83,0xa8,0xb1,0x6e,
0x83,0x00,0x26,0x1e,
});
test_asm(r, [&](A& a) {
a.ldrb(A::v0, A::x8);
a.strb(A::v0, A::x8);
},{
0x00,0x01,0x40,0x3d,
0x00,0x01,0x00,0x3d,
});
test_asm(r, [&](A& a) {
a.tbl(A::v0, A::v1, A::v2);
},{
0x20,0x00,0x02,0x4e,
});
}
DEF_TEST(SkVM_approx_math, r) {
auto eval = [](int N, float values[], auto fn) {
skvm::Builder b;
skvm::Arg inout = b.varying<float>();
b.storeF(inout, fn(&b, b.loadF(inout)));
b.done().eval(N, values);
};
auto compare = [r](int N, const float values[], const float expected[]) {
for (int i = 0; i < N; ++i) {
REPORTER_ASSERT(r, SkScalarNearlyEqual(values[i], expected[i], 0.001f));
}
};
// log2
{
float values[] = {0.25f, 0.5f, 1, 2, 4, 8};
constexpr int N = SK_ARRAY_COUNT(values);
eval(N, values, [](skvm::Builder* b, skvm::F32 v) {
return b->approx_log2(v);
});
const float expected[] = {-2, -1, 0, 1, 2, 3};
compare(N, values, expected);
}
// pow2
{
float values[] = {-2, -1, 0, 1, 2, 3};
constexpr int N = SK_ARRAY_COUNT(values);
eval(N, values, [](skvm::Builder* b, skvm::F32 v) {
return b->approx_pow2(v);
});
const float expected[] = {0.25f, 0.5f, 1, 2, 4, 8};
compare(N, values, expected);
}
// powf -- x^0.5
{
float bases[] = {0, 1, 4, 9, 16};
constexpr int N = SK_ARRAY_COUNT(bases);
eval(N, bases, [](skvm::Builder* b, skvm::F32 base) {
return b->approx_powf(base, b->splat(0.5f));
});
const float expected[] = {0, 1, 2, 3, 4};
compare(N, bases, expected);
}
// powf -- 3^x
{
float exps[] = {-2, -1, 0, 1, 2};
constexpr int N = SK_ARRAY_COUNT(exps);
eval(N, exps, [](skvm::Builder* b, skvm::F32 exp) {
return b->approx_powf(b->splat(3.0f), exp);
});
const float expected[] = {1/9.0f, 1/3.0f, 1, 3, 9};
compare(N, exps, expected);
}
auto test = [r](float arg, float expected, float tolerance, auto prog) {
skvm::Builder b;
skvm::Arg inout = b.varying<float>();
b.storeF(inout, prog(b.loadF(inout)));
float actual = arg;
b.done().eval(1, &actual);
float err = std::abs(actual - expected);
if (err > tolerance) {
// SkDebugf("arg %g, expected %g, actual %g\n", arg, expected, actual);
REPORTER_ASSERT(r, true);
}
return err;
};
auto test2 = [r](float arg0, float arg1, float expected, float tolerance, auto prog) {
skvm::Builder b;
skvm::Arg in0 = b.varying<float>();
skvm::Arg in1 = b.varying<float>();
skvm::Arg out = b.varying<float>();
b.storeF(out, prog(b.loadF(in0), b.loadF(in1)));
float actual;
b.done().eval(1, &arg0, &arg1, &actual);
float err = std::abs(actual - expected);
if (err > tolerance) {
// SkDebugf("[%g, %g]: expected %g, actual %g\n", arg0, arg1, expected, actual);
REPORTER_ASSERT(r, true);
}
return err;
};
// sine, cosine, tangent
{
constexpr float P = SK_ScalarPI;
constexpr float tol = 0.00175f;
for (float rad = -5*P; rad <= 5*P; rad += 0.1f) {
test(rad, sk_float_sin(rad), tol, [](skvm::F32 x) {
return approx_sin(x);
});
test(rad, sk_float_cos(rad), tol, [](skvm::F32 x) {
return approx_cos(x);
});
}
// Our tangent diverge more as we get near infinities (x near +- Pi/2),
// so bring in the domain a little.
constexpr float eps = 0.16f;
float err = 0;
for (float rad = -P/2 + eps; rad <= P/2 - eps; rad += 0.01f) {
err += test(rad, sk_float_tan(rad), tol, [](skvm::F32 x) {
return approx_tan(x);
});
// try again with some multiples of P, to check our periodicity
test(rad, sk_float_tan(rad), tol, [=](skvm::F32 x) {
return approx_tan(x + 3*P);
});
test(rad, sk_float_tan(rad), tol, [=](skvm::F32 x) {
return approx_tan(x - 3*P);
});
}
if (0) { SkDebugf("tan error %g\n", err); }
}
// asin, acos, atan
{
constexpr float tol = 0.00175f;
float err = 0;
for (float x = -1; x <= 1; x += 1.0f/64) {
err += test(x, asin(x), tol, [](skvm::F32 x) {
return approx_asin(x);
});
test(x, acos(x), tol, [](skvm::F32 x) {
return approx_acos(x);
});
}
if (0) { SkDebugf("asin error %g\n", err); }
err = 0;
for (float x = -10; x <= 10; x += 1.0f/16) {
err += test(x, atan(x), tol, [](skvm::F32 x) {
return approx_atan(x);
});
}
if (0) { SkDebugf("atan error %g\n", err); }
for (float y = -3; y <= 3; y += 1) {
for (float x = -3; x <= 3; x += 1) {
err += test2(y, x, atan2(y,x), tol, [](skvm::F32 y, skvm::F32 x) {
return approx_atan2(y,x);
});
}
}
if (0) { SkDebugf("atan2 error %g\n", err); }
}
}
DEF_TEST(SkVM_min_max, r) {
// min() and max() have subtle behavior when one argument is NaN and
// the other isn't. It's not sound to blindly swap their arguments.
//
// All backends must behave like std::min() and std::max(), which are
//
// min(x,y) = y<x ? y : x
// max(x,y) = x<y ? y : x
// ±NaN, ±0, ±1, ±inf
const uint32_t bits[] = {0x7f80'0001, 0xff80'0001, 0x0000'0000, 0x8000'0000,
0x3f80'0000, 0xbf80'0000, 0x7f80'0000, 0xff80'0000};
float f[8];
memcpy(f, bits, sizeof(bits));
auto identical = [&](float x, float y) {
uint32_t X,Y;
memcpy(&X, &x, 4);
memcpy(&Y, &y, 4);
return X == Y;
};
// Test min/max with non-constant x, non-constant y.
// (Whether x and y are varying or uniform shouldn't make any difference.)
{
skvm::Builder b;
{
skvm::Arg src = b.varying<float>(),
mn = b.varying<float>(),
mx = b.varying<float>();
skvm::F32 x = b.loadF(src),
y = b.uniformF(b.uniform(), 0);
b.storeF(mn, b.min(x,y));
b.storeF(mx, b.max(x,y));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
float mn[8], mx[8];
for (int i = 0; i < 8; i++) {
// min() and max() everything with f[i].
program.eval(8, f,mn,mx, &f[i]);
for (int j = 0; j < 8; j++) {
REPORTER_ASSERT(r, identical(mn[j], std::min(f[j], f[i])));
REPORTER_ASSERT(r, identical(mx[j], std::max(f[j], f[i])));
}
}
});
}
// Test each with constant on the right.
for (int i = 0; i < 8; i++) {
skvm::Builder b;
{
skvm::Arg src = b.varying<float>(),
mn = b.varying<float>(),
mx = b.varying<float>();
skvm::F32 x = b.loadF(src),
y = b.splat(f[i]);
b.storeF(mn, b.min(x,y));
b.storeF(mx, b.max(x,y));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
float mn[8], mx[8];
program.eval(8, f,mn,mx);
for (int j = 0; j < 8; j++) {
REPORTER_ASSERT(r, identical(mn[j], std::min(f[j], f[i])));
REPORTER_ASSERT(r, identical(mx[j], std::max(f[j], f[i])));
}
});
}
// Test each with constant on the left.
for (int i = 0; i < 8; i++) {
skvm::Builder b;
{
skvm::Arg src = b.varying<float>(),
mn = b.varying<float>(),
mx = b.varying<float>();
skvm::F32 x = b.splat(f[i]),
y = b.loadF(src);
b.storeF(mn, b.min(x,y));
b.storeF(mx, b.max(x,y));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
float mn[8], mx[8];
program.eval(8, f,mn,mx);
for (int j = 0; j < 8; j++) {
REPORTER_ASSERT(r, identical(mn[j], std::min(f[i], f[j])));
REPORTER_ASSERT(r, identical(mx[j], std::max(f[i], f[j])));
}
});
}
}
DEF_TEST(SkVM_halfs, r) {
const uint16_t hs[] = {0x0000,0x3800,0x3c00,0x4000,
0xc400,0xb800,0xbc00,0xc000};
const float fs[] = {+0.0f,+0.5f,+1.0f,+2.0f,
-4.0f,-0.5f,-1.0f,-2.0f};
{
skvm::Builder b;
skvm::Arg src = b.varying<uint16_t>(),
dst = b.varying<float>();
b.storeF(dst, b.from_half(b.load16(src)));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
float dst[8];
program.eval(8, hs, dst);
for (int i = 0; i < 8; i++) {
REPORTER_ASSERT(r, dst[i] == fs[i]);
}
});
}
{
skvm::Builder b;
skvm::Arg src = b.varying<float>(),
dst = b.varying<uint16_t>();
b.store16(dst, b.to_half(b.loadF(src)));
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
uint16_t dst[8];
program.eval(8, fs, dst);
for (int i = 0; i < 8; i++) {
REPORTER_ASSERT(r, dst[i] == hs[i]);
}
});
}
}
DEF_TEST(SkVM_64bit, r) {
uint32_t lo[65],
hi[65];
uint64_t wide[65];
for (int i = 0; i < 65; i++) {
lo[i] = 2*i+0;
hi[i] = 2*i+1;
wide[i] = ((uint64_t)lo[i] << 0)
| ((uint64_t)hi[i] << 32);
}
{
skvm::Builder b;
{
skvm::Arg wide = b.varying<uint64_t>(),
lo = b.varying<int>(),
hi = b.varying<int>();
b.store32(lo, b.load64(wide, 0));
b.store32(hi, b.load64(wide, 1));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
uint32_t l[65], h[65];
program.eval(65, wide,l,h);
for (int i = 0; i < 65; i++) {
REPORTER_ASSERT(r, l[i] == lo[i]);
REPORTER_ASSERT(r, h[i] == hi[i]);
}
});
}
{
skvm::Builder b;
{
skvm::Arg wide = b.varying<uint64_t>(),
lo = b.varying<int>(),
hi = b.varying<int>();
b.store64(wide, b.load32(lo), b.load32(hi));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
uint64_t w[65];
program.eval(65, w,lo,hi);
for (int i = 0; i < 65; i++) {
REPORTER_ASSERT(r, w[i] == wide[i]);
}
});
}
}
DEF_TEST(SkVM_is_NaN_is_finite, r) {
skvm::Builder b;
{
skvm::Arg src = b.varying<float>(),
nan = b.varying<int>(),
fin = b.varying<int>();
b.store32(nan, is_NaN (b.loadF(src)));
b.store32(fin, is_finite(b.loadF(src)));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
// ±NaN, ±0, ±1, ±inf
const uint32_t bits[] = {0x7f80'0001, 0xff80'0001, 0x0000'0000, 0x8000'0000,
0x3f80'0000, 0xbf80'0000, 0x7f80'0000, 0xff80'0000};
uint32_t nan[8], fin[8];
program.eval(8, bits, nan,fin);
for (int i = 0; i < 8; i++) {
REPORTER_ASSERT(r, nan[i] == ((i == 0 || i == 1) ? 0xffffffff : 0));
REPORTER_ASSERT(r, fin[i] == ((i == 2 || i == 3 ||
i == 4 || i == 5) ? 0xffffffff : 0));
}
});
}
DEF_TEST(SkVM_args, r) {
// Test we can handle at least six arguments.
skvm::Builder b;
{
skvm::Arg dst = b.varying<float>(),
A = b.varying<float>(),
B = b.varying<float>(),
C = b.varying<float>(),
D = b.varying<float>(),
E = b.varying<float>();
storeF(dst, b.loadF(A)
+ b.loadF(B)
+ b.loadF(C)
+ b.loadF(D)
+ b.loadF(E));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
float dst[17],A[17],B[17],C[17],D[17],E[17];
for (int i = 0; i < 17; i++) {
A[i] = B[i] = C[i] = D[i] = E[i] = (float)i;
}
program.eval(17, dst,A,B,C,D,E);
for (int i = 0; i < 17; i++) {
REPORTER_ASSERT(r, dst[i] == 5.0f*i);
}
});
}
DEF_TEST(SkVM_Q14, r) {
// Some nice round Q14 test values from -1.0 (0xc000) to +1.0 (0x4000) by 16ths (0x0400).
const uint16_t src[] = {
0xc000, 0xc400, 0xc800, 0xcc00, 0xd000, 0xd400, 0xd800, 0xdc00,
0xe000, 0xe400, 0xe800, 0xec00, 0xf000, 0xf400, 0xf800, 0xfc00,
0x0000,
0x0400, 0x0800, 0x0c00, 0x1000, 0x1400, 0x1800, 0x1c00, 0x2000,
0x2400, 0x2800, 0x2c00, 0x3000, 0x3400, 0x3800, 0x3c00, 0x4000,
};
// These test cases are essentially mechanically generated to get coverage...
// I've spot checked here and there and things seem correct, but I wouldn't
// be surprised to find that there were bugs. Using nice round numbers to
// avoid having to think about low-bit precision for now.
struct {
skvm::Q14 (*fn)(skvm::Q14);
uint16_t expected[33];
} cases[] = {
{[](skvm::Q14 x) { return x; }, // Just double checking the test harness works.
{0xc000, 0xc400, 0xc800, 0xcc00, 0xd000, 0xd400, 0xd800, 0xdc00,
0xe000, 0xe400, 0xe800, 0xec00, 0xf000, 0xf400, 0xf800, 0xfc00,
0x0000,
0x0400, 0x0800, 0x0c00, 0x1000, 0x1400, 0x1800, 0x1c00, 0x2000,
0x2400, 0x2800, 0x2c00, 0x3000, 0x3400, 0x3800, 0x3c00, 0x4000}},
{[](skvm::Q14 x) { return x*x; }, // square ±1/16 (0x0400) -> 1/256 (0x0040), etc.
{0x4000, 0x3840, 0x3100, 0x2a40, 0x2400, 0x1e40, 0x1900, 0x1440,
0x1000, 0x0c40, 0x0900, 0x0640, 0x0400, 0x0240, 0x0100, 0x0040,
0x0000,
0x0040, 0x0100, 0x0240, 0x0400, 0x0640, 0x0900, 0x0c40, 0x1000,
0x1440, 0x1900, 0x1e40, 0x2400, 0x2a40, 0x3100, 0x3840, 0x4000}},
{[](skvm::Q14 x) { return -(x*-x); }, // square, version B
{0x4000, 0x3840, 0x3100, 0x2a40, 0x2400, 0x1e40, 0x1900, 0x1440,
0x1000, 0x0c40, 0x0900, 0x0640, 0x0400, 0x0240, 0x0100, 0x0040,
0x0000,
0x0040, 0x0100, 0x0240, 0x0400, 0x0640, 0x0900, 0x0c40, 0x1000,
0x1440, 0x1900, 0x1e40, 0x2400, 0x2a40, 0x3100, 0x3840, 0x4000}},
{[](skvm::Q14 x) { return x>>1; }, // divide by 2
{0xe000, 0xe200, 0xe400, 0xe600, 0xe800, 0xea00, 0xec00, 0xee00,
0xf000, 0xf200, 0xf400, 0xf600, 0xf800, 0xfa00, 0xfc00, 0xfe00,
0x0000,
0x0200, 0x0400, 0x0600, 0x0800, 0x0a00, 0x0c00, 0x0e00, 0x1000,
0x1200, 0x1400, 0x1600, 0x1800, 0x1a00, 0x1c00, 0x1e00, 0x2000}},
{[](skvm::Q14 x) { return shr(x,1); }, // logical shift by 1
{0x6000, 0x6200, 0x6400, 0x6600, 0x6800, 0x6a00, 0x6c00, 0x6e00,
0x7000, 0x7200, 0x7400, 0x7600, 0x7800, 0x7a00, 0x7c00, 0x7e00,
0x0000,
0x0200, 0x0400, 0x0600, 0x0800, 0x0a00, 0x0c00, 0x0e00, 0x1000,
0x1200, 0x1400, 0x1600, 0x1800, 0x1a00, 0x1c00, 0x1e00, 0x2000}},
{[](skvm::Q14 x) { return x - (x>>2); }, // 3/4 x, version A
{0xd000, 0xd300, 0xd600, 0xd900, 0xdc00, 0xdf00, 0xe200, 0xe500,
0xe800, 0xeb00, 0xee00, 0xf100, 0xf400, 0xf700, 0xfa00, 0xfd00,
0x0000,
0x0300, 0x0600, 0x0900, 0x0c00, 0x0f00, 0x1200, 0x1500, 0x1800,
0x1b00, 0x1e00, 0x2100, 0x2400, 0x2700, 0x2a00, 0x2d00, 0x3000}},
{[](skvm::Q14 x) { return (x>>1) + (x>>2); }, // 3/4 x, version B
{0xd000, 0xd300, 0xd600, 0xd900, 0xdc00, 0xdf00, 0xe200, 0xe500,
0xe800, 0xeb00, 0xee00, 0xf100, 0xf400, 0xf700, 0xfa00, 0xfd00,
0x0000,
0x0300, 0x0600, 0x0900, 0x0c00, 0x0f00, 0x1200, 0x1500, 0x1800,
0x1b00, 0x1e00, 0x2100, 0x2400, 0x2700, 0x2a00, 0x2d00, 0x3000}},
{[](skvm::Q14 x) { return ((x>>2) + (x>>3))<<1; }, // 3/4 x, version C
{0xd000, 0xd300, 0xd600, 0xd900, 0xdc00, 0xdf00, 0xe200, 0xe500,
0xe800, 0xeb00, 0xee00, 0xf100, 0xf400, 0xf700, 0xfa00, 0xfd00,
0x0000,
0x0300, 0x0600, 0x0900, 0x0c00, 0x0f00, 0x1200, 0x1500, 0x1800,
0x1b00, 0x1e00, 0x2100, 0x2400, 0x2700, 0x2a00, 0x2d00, 0x3000}},
// TODO: I'm not sure if this one is working correctly or not. Should only work for >=0?
{[](skvm::Q14 x) { return unsigned_avg(x, x>>1); }, // 3/4 x, version D
{0xd000, 0xd300, 0xd600, 0xd900, 0xdc00, 0xdf00, 0xe200, 0xe500,
0xe800, 0xeb00, 0xee00, 0xf100, 0xf400, 0xf700, 0xfa00, 0xfd00,
0x0000,
0x0300, 0x0600, 0x0900, 0x0c00, 0x0f00, 0x1200, 0x1500, 0x1800,
0x1b00, 0x1e00, 0x2100, 0x2400, 0x2700, 0x2a00, 0x2d00, 0x3000}},
{[](skvm::Q14 x) { return min(x, +0.5f); }, // clamp down to 0x2000, version A
{0xc000, 0xc400, 0xc800, 0xcc00, 0xd000, 0xd400, 0xd800, 0xdc00,
0xe000, 0xe400, 0xe800, 0xec00, 0xf000, 0xf400, 0xf800, 0xfc00,
0x0000,
0x0400, 0x0800, 0x0c00, 0x1000, 0x1400, 0x1800, 0x1c00, 0x2000,
0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000}},
{[](skvm::Q14 x) { return select(x < +0.5f, x, +0.5f); }, // clamp down to 0x2000, vB
{0xc000, 0xc400, 0xc800, 0xcc00, 0xd000, 0xd400, 0xd800, 0xdc00,
0xe000, 0xe400, 0xe800, 0xec00, 0xf000, 0xf400, 0xf800, 0xfc00,
0x0000,
0x0400, 0x0800, 0x0c00, 0x1000, 0x1400, 0x1800, 0x1c00, 0x2000,
0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000}},
{[](skvm::Q14 x) { return select(x == 1.0f, 0.5f, x); },
{0xc000, 0xc400, 0xc800, 0xcc00, 0xd000, 0xd400, 0xd800, 0xdc00,
0xe000, 0xe400, 0xe800, 0xec00, 0xf000, 0xf400, 0xf800, 0xfc00,
0x0000,
0x0400, 0x0800, 0x0c00, 0x1000, 0x1400, 0x1800, 0x1c00, 0x2000,
0x2400, 0x2800, 0x2c00, 0x3000, 0x3400, 0x3800, 0x3c00, 0x2000}},
{[](skvm::Q14 x) { return max(x, -0.5f); }, // clamp up to 0xe000
{0xe000, 0xe000, 0xe000, 0xe000, 0xe000, 0xe000, 0xe000, 0xe000,
0xe000, 0xe400, 0xe800, 0xec00, 0xf000, 0xf400, 0xf800, 0xfc00,
0x0000,
0x0400, 0x0800, 0x0c00, 0x1000, 0x1400, 0x1800, 0x1c00, 0x2000,
0x2400, 0x2800, 0x2c00, 0x3000, 0x3400, 0x3800, 0x3c00, 0x4000}},
};
for (const auto& test : cases) {
skvm::Builder b;
{
skvm::Arg dst = b.varying<uint16_t>(),
src = b.varying<uint16_t>();
skvm::Q14 x = to_Q14(b.load16(src));
store16(dst, to_I32(test.fn(x)));
}
test_jit_and_interpreter(b.done(), [&](const skvm::Program& program){
uint16_t dst[33];
program.eval(33, dst,src);
for (int i = 0; i < 33; i++) {
if (test.expected[32]) {
REPORTER_ASSERT(r, test.expected[i] == dst[i]);
} else {
if (i == 0 || i == 8 || i == 16 || i == 17 || i == 25) SkDebugf("\n");
SkDebugf("0x%04x, ", dst[i]);
}
}
});
}
}
DEF_TEST(SkVM_badpack, r) {
// Test case distilled from actual failing draw,
// originally with a bad arm64 implementation of pack().
skvm::Builder p;
{
skvm::Arg uniforms = p.uniform(),
dst = p.varying<uint16_t>();
skvm::I32 r = round(bit_cast(p.uniform32(uniforms, 8)) * 15),
a = p.splat(0xf);
skvm::I32 _4444 = p.splat(0);
_4444 = pack(_4444, r, 12);
_4444 = pack(_4444, a, 0);
store16(dst, _4444);
}
test_jit_and_interpreter(p.done(), [&](const skvm::Program& program){
const float uniforms[] = { 0.0f, 0.0f,
1.0f, 0.0f, 0.0f, 1.0f };
uint16_t dst[17] = {0};
program.eval(17, uniforms,dst);
for (int i = 0; i < 17; i++) {
REPORTER_ASSERT(r, dst[i] == 0xf00f, "got %04x, want %04x\n", dst[i], 0xf00f);
}
});
}
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