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[Liftoff][mips] Implement instruction for type conversions

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All conversions, reinterpretations, promotions and demotions are
implemented in Liftoff on MIPS.

Bug: v8:6600
Change-Id: I8920aea1cabdb59676c2c03fbb6de6156ebf0a62
Reviewed-on: https://chromium-review.googlesource.com/983554
Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#52277}
This commit is contained in:
sreten.kovacevic 2018-03-28 14:39:01 +02:00 committed by Commit Bot
parent 81339cc930
commit 53decc1a03
2 changed files with 114 additions and 4 deletions
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63
src/wasm/baseline/mips/liftoff-assembler-mips.h
View File

@ -537,8 +537,69 @@ FP_UNOP(f64_sqrt, sqrt_d)
bool LiftoffAssembler::emit_type_conversion(WasmOpcode opcode,
LiftoffRegister dst,
LiftoffRegister src) {
BAILOUT("emit_type_conversion");
switch (opcode) {
case kExprI32ConvertI64:
TurboAssembler::Move(dst.gp(), src.low_gp());
return true;
case kExprI32ReinterpretF32:
mfc1(dst.gp(), src.fp());
return true;
case kExprI64SConvertI32:
TurboAssembler::Move(dst.low_gp(), src.gp());
TurboAssembler::Move(dst.high_gp(), src.gp());
sra(dst.high_gp(), dst.high_gp(), 31);
return true;
case kExprI64UConvertI32:
TurboAssembler::Move(dst.low_gp(), src.gp());
TurboAssembler::Move(dst.high_gp(), zero_reg);
return true;
case kExprI64ReinterpretF64:
mfc1(dst.low_gp(), src.fp());
TurboAssembler::Mfhc1(dst.high_gp(), src.fp());
return true;
case kExprF32SConvertI32: {
LiftoffRegister scratch =
GetUnusedRegister(kFpReg, LiftoffRegList::ForRegs(dst));
mtc1(src.gp(), scratch.fp());
cvt_s_w(dst.fp(), scratch.fp());
return true;
}
case kExprF32UConvertI32: {
LiftoffRegister scratch =
GetUnusedRegister(kFpReg, LiftoffRegList::ForRegs(dst));
TurboAssembler::Cvt_d_uw(dst.fp(), src.gp(), scratch.fp());
cvt_s_d(dst.fp(), dst.fp());
return true;
}
case kExprF32ConvertF64:
cvt_s_d(dst.fp(), src.fp());
return true;
case kExprF32ReinterpretI32:
TurboAssembler::FmoveLow(dst.fp(), src.gp());
return true;
case kExprF64SConvertI32: {
LiftoffRegister scratch =
GetUnusedRegister(kFpReg, LiftoffRegList::ForRegs(dst));
mtc1(src.gp(), scratch.fp());
cvt_d_w(dst.fp(), scratch.fp());
return true;
}
case kExprF64UConvertI32: {
LiftoffRegister scratch =
GetUnusedRegister(kFpReg, LiftoffRegList::ForRegs(dst));
TurboAssembler::Cvt_d_uw(dst.fp(), src.gp(), scratch.fp());
return true;
}
case kExprF64ConvertF32:
cvt_d_s(dst.fp(), src.fp());
return true;
case kExprF64ReinterpretI64:
mtc1(src.low_gp(), dst.fp());
TurboAssembler::Mthc1(src.high_gp(), dst.fp());
return true;
default:
return false;
}
}
void LiftoffAssembler::emit_jump(Label* label) {

51
src/wasm/baseline/mips64/liftoff-assembler-mips64.h
View File

@ -431,8 +431,57 @@ FP_UNOP(f64_sqrt, sqrt_d)
bool LiftoffAssembler::emit_type_conversion(WasmOpcode opcode,
LiftoffRegister dst,
LiftoffRegister src) {
BAILOUT("emit_type_conversion");
switch (opcode) {
case kExprI32ConvertI64:
TurboAssembler::Ext(dst.gp(), src.gp(), 0, 32);
return true;
case kExprI32ReinterpretF32:
TurboAssembler::FmoveLow(dst.gp(), src.fp());
return true;
case kExprI64SConvertI32:
sll(dst.gp(), src.gp(), 0);
return true;
case kExprI64UConvertI32:
TurboAssembler::Dext(dst.gp(), src.gp(), 0, 32);
return true;
case kExprI64ReinterpretF64:
dmfc1(dst.gp(), src.fp());
return true;
case kExprF32SConvertI32: {
LiftoffRegister scratch =
GetUnusedRegister(kFpReg, LiftoffRegList::ForRegs(dst));
mtc1(src.gp(), scratch.fp());
cvt_s_w(dst.fp(), scratch.fp());
return true;
}
case kExprF32UConvertI32:
TurboAssembler::Cvt_s_uw(dst.fp(), src.gp());
return true;
case kExprF32ConvertF64:
cvt_s_d(dst.fp(), src.fp());
return true;
case kExprF32ReinterpretI32:
TurboAssembler::FmoveLow(dst.fp(), src.gp());
return true;
case kExprF64SConvertI32: {
LiftoffRegister scratch =
GetUnusedRegister(kFpReg, LiftoffRegList::ForRegs(dst));
mtc1(src.gp(), scratch.fp());
cvt_d_w(dst.fp(), scratch.fp());
return true;
}
case kExprF64UConvertI32:
TurboAssembler::Cvt_d_uw(dst.fp(), src.gp());
return true;
case kExprF64ConvertF32:
cvt_d_s(dst.fp(), src.fp());
return true;
case kExprF64ReinterpretI64:
dmtc1(src.gp(), dst.fp());
return true;
default:
return false;
}
}
void LiftoffAssembler::emit_jump(Label* label) {