From 3777592ada560e2943a066f7d2d62fd468dbf62c Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Wed, 19 May 2021 00:29:07 -0400
Subject: glasm: Implement IADD.CC
---
.../backend/glasm/emit_glasm_integer.cpp | 27 +++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
(limited to 'src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp')
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
index ba69c7a1be..ff353df8d7 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
@@ -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,
--
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