AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity

[wasm][liftoff][arm] Add saturated conversion float->int32

Browse Source 
Bug: v8:10520
Change-Id: Ifc99782682c7b1597357211d72a11c44703965b2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2202907
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Richard Stotz <rstz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67893}
This commit is contained in:
Richard Stotz 2020-05-18 18:20:19 +02:00 committed by Commit Bot
parent 04cec28916
commit 3c6b5acc06
1 changed files with 28 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/wasm/baseline/arm/liftoff-assembler-arm.h
View File

@ -1911,18 +1911,38 @@ bool LiftoffAssembler::emit_type_conversion(WasmOpcode opcode,
b(trap, ge);
return true;
}
case kExprI32SConvertSatF32:
bailout(kNonTrappingFloatToInt, "kExprI32SConvertSatF32");
case kExprI32SConvertSatF32: {
UseScratchRegisterScope temps(this);
SwVfpRegister scratch_f = temps.AcquireS();
vcvt_s32_f32(
scratch_f,
liftoff::GetFloatRegister(src.fp())); // f32 -> i32 round to zero.
vmov(dst.gp(), scratch_f);
return true;
case kExprI32UConvertSatF32:
bailout(kNonTrappingFloatToInt, "kExprI32UConvertSatF32");
}
case kExprI32UConvertSatF32: {
UseScratchRegisterScope temps(this);
SwVfpRegister scratch_f = temps.AcquireS();
vcvt_u32_f32(
scratch_f,
liftoff::GetFloatRegister(src.fp())); // f32 -> u32 round to zero.
vmov(dst.gp(), scratch_f);
return true;
case kExprI32SConvertSatF64:
bailout(kNonTrappingFloatToInt, "kExprI32SConvertSatF64");
}
case kExprI32SConvertSatF64: {
UseScratchRegisterScope temps(this);
SwVfpRegister scratch_f = temps.AcquireS();
vcvt_s32_f64(scratch_f, src.fp()); // f64 -> i32 round to zero.
vmov(dst.gp(), scratch_f);
return true;
case kExprI32UConvertSatF64:
bailout(kNonTrappingFloatToInt, "kExprI32UConvertSatF64");
}
case kExprI32UConvertSatF64: {
UseScratchRegisterScope temps(this);
SwVfpRegister scratch_f = temps.AcquireS();
vcvt_u32_f64(scratch_f, src.fp()); // f64 -> u32 round to zero.
vmov(dst.gp(), scratch_f);
return true;
}
case kExprI64SConvertSatF32:
bailout(kNonTrappingFloatToInt, "kExprI64SConvertSatF32");
return true;