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SkXbyak: loop inside, only body

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SkXbyak_…
927  …JITCompiled 1x  …Interpreted 1.33x  …HandWritten 1.97x

CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD

Change-Id: I486bbc341a38354345bfcf3d6150d1628f83f186
Reviewed-on: https://skia-review.googlesource.com/6726
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This commit is contained in:
Mike Klein 2017-01-07 06:09:43 -05:00 committed by Skia Commit-Bot
parent 86d55b312a
commit 1523dbdd72
1 changed files with 20 additions and 20 deletions
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40
src/opts/SkXbyak.cpp
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@ -33,16 +33,15 @@ namespace {
return nullptr;
}
Pipeline(const SkRasterPipeline::Stage* stages, int n, bool* supported) {
Pipeline(const SkRasterPipeline::Stage* stages, int nstages, bool* supported) {
// Set up some register name aliases.
// y = rsi, tail = rdx;
auto x = rdi;
// y = rsi
auto x = rdi, n = rdx;
auto r = ymm0, g = ymm1, b = ymm2, a = ymm3,
dr = ymm4, dg = ymm5, db = ymm6, da = ymm7;
Xbyak::Label floatOneStorage;
//trap();
Xbyak::Label floatOneStorage,
start;
// TODO: set up (x+0.5,y+0.5) in (r,g)
vxorps(r,r);
@ -54,7 +53,14 @@ namespace {
vxorps(db,db);
vxorps(da,da);
for (int i = 0; i < n; i++) {
auto zero = ymm14,
one = ymm15;
vxorps(zero, zero);
vbroadcastss(one, ptr[rip + floatOneStorage]);
L(start);
//trap();
for (int i = 0; i < nstages; i++) {
switch(stages[i].stage) {
case SkRasterPipeline::load_f16:
mov(rax, (size_t)stages[i].ctx);
@ -77,11 +83,9 @@ namespace {
break;
case SkRasterPipeline::unpremul:
vxorps(ymm8, ymm8); // ymm8: 0
vcmpeqps(ymm10, ymm8, a); // ymm10: a == 0
vbroadcastss(ymm9, ptr[rip + floatOneStorage]); // ymm9: 1.0f
vdivps(ymm11, ymm9, a); // ymm11: 1/a
vblendvps(ymm10, ymm10, ymm8, ymm11); // ymm10: (a==0) ? 0 : 1/a
vcmpeqps(ymm10, zero, a); // ymm10: a == 0
vdivps(ymm11, one, a); // ymm11: 1/a
vblendvps(ymm10, ymm10, zero, ymm11); // ymm10: (a==0) ? 0 : 1/a
vmulps(r, r, ymm10);
vmulps(g, g, ymm10);
vmulps(b, b, ymm10);
@ -112,6 +116,9 @@ namespace {
return;
}
}
add(x, 8);
cmp(x, n);
jl(start);
vzeroupper();
ret();
@ -140,14 +147,7 @@ std::function<void(size_t, size_t, size_t)> SkRasterPipeline::jit() const {
return [pipeline] (size_t x, size_t y, size_t n) {
auto call = pipeline->getCode<void(*)(size_t, size_t, size_t)>();
//printf("fn addr: %p\n", (void*)call);
while (n >= 8) {
call(x,y,0);
x += 8;
n -= 8;
}
if (n) {
call(x,y,n);
}
call(x,y,n);
};
}
#if 0