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frontend/ir/ir_emitter: Add opcodes for floating point reciprocal exponents

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Lioncash 2019-03-02 20:18:59 -05:00 • committed by MerryMage
parent b168c2a9f9
commit 9cf3c25811
4 changed files with 27 additions and 0 deletions
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17
src/backend/x64/emit_x64_floating_point.cpp
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@ -719,6 +719,23 @@ void EmitX64::EmitFPRecipEstimate64(EmitContext& ctx, IR::Inst* inst) {
EmitFPRecipEstimate<u64>(code, ctx, inst);
}
template <typename FPT>
static void EmitFPRecipExponent(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::FPRecipExponent<FPT>);
}
void EmitX64::EmitFPRecipExponent32(EmitContext& ctx, IR::Inst* inst) {
EmitFPRecipExponent<u32>(code, ctx, inst);
}
void EmitX64::EmitFPRecipExponent64(EmitContext& ctx, IR::Inst* inst) {
EmitFPRecipExponent<u64>(code, ctx, inst);
}
template<size_t fsize>
static void EmitFPRecipStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
using FPT = mp::unsigned_integer_of_size<fsize>;