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IR: Implement FPRSqrtEstimate

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This commit is contained in:
MerryMage 2018-07-22 18:18:22 +01:00
parent 16061c28f3
commit bde58b04d4
8 changed files with 132 additions and 0 deletions
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17
src/backend_x64/emit_x64_floating_point.cpp
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@ -878,6 +878,23 @@ void EmitX64::EmitFPRoundInt64(EmitContext& ctx, IR::Inst* inst) {
EmitFPRound(code, ctx, inst, 64);
}
template<typename FPT>
static void EmitFPRSqrtEsimate(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ctx.reg_alloc.HostCall(inst, args[0]);
code.mov(code.ABI_PARAM2.cvt32(), ctx.FPCR());
code.lea(code.ABI_PARAM3, code.ptr[code.r15 + code.GetJitStateInfo().offsetof_fpsr_exc]);
code.CallFunction(&FP::FPRSqrtEstimate<FPT>);
}
void EmitX64::EmitFPRSqrtEstimate32(EmitContext& ctx, IR::Inst* inst) {
EmitFPRSqrtEsimate<u32>(code, ctx, inst);
}
void EmitX64::EmitFPRSqrtEstimate64(EmitContext& ctx, IR::Inst* inst) {
EmitFPRSqrtEsimate<u64>(code, ctx, inst);
}
void EmitX64::EmitFPSqrt32(EmitContext& ctx, IR::Inst* inst) {
FPTwoOp32(code, ctx, inst, &Xbyak::CodeGenerator::sqrtss);
}