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glasm: Implement IADD.CC

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ameerj 2021-05-19 00:29:07 -04:00
parent 98ed8ff103
commit 3777592ada
1 changed files with 26 additions and 1 deletions
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27
src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
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@ -9,7 +9,32 @@
namespace Shader::Backend::GLASM {
void EmitIAdd32(EmitContext& ctx, IR::Inst& inst, ScalarS32 a, ScalarS32 b) {
ctx.Add("ADD.S {}.x,{},{};", inst, a, b);
const bool cc{inst.HasAssociatedPseudoOperation()};
const std::string_view cc_mod{cc ? ".CC" : ""};
if (cc) {
ctx.reg_alloc.InvalidateConditionCodes();
}
const auto ret{ctx.reg_alloc.Define(inst)};
ctx.Add("ADD.S{} {}.x,{},{};", cc_mod, ret, a, b);
if (!cc) {
return;
}
static constexpr std::array<std::string_view, 4> masks{"EQ", "SF", "CF", "OF"};
const std::array flags{
inst.GetAssociatedPseudoOperation(IR::Opcode::GetZeroFromOp),
inst.GetAssociatedPseudoOperation(IR::Opcode::GetSignFromOp),
inst.GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp),
inst.GetAssociatedPseudoOperation(IR::Opcode::GetOverflowFromOp),
};
for (size_t i = 0; i < flags.size(); ++i) {
if (flags[i]) {
const auto flag_ret{ctx.reg_alloc.Define(*flags[i])};
ctx.Add("MOV.S {},0;"
"MOV.S {}({}.x),-1;",
flag_ret, flag_ret, masks[i]);
flags[i]->Invalidate();
}
}
}
void EmitIAdd64([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register a,