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-rw-r--r--src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp4
-rw-r--r--src/shader_recompiler/frontend/ir/value.h13
2 files changed, 16 insertions, 1 deletions
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
index c76b45b8b..022b6584c 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
@@ -58,7 +58,9 @@ void EmitPhiMove(EmitContext& ctx, const IR::Value& phi_value, const IR::Value&
}
const Register phi_reg{ctx.reg_alloc.Consume(IR::Value{&phi})};
const Value eval_value{ctx.reg_alloc.Consume(value)};
-
+ if (!value.IsImmediate() && IR::IsUndef(RegAlloc::AliasInst(*value.Inst()))) {
+ return;
+ }
if (phi_reg == eval_value) {
return;
}
diff --git a/src/shader_recompiler/frontend/ir/value.h b/src/shader_recompiler/frontend/ir/value.h
index 0c6bf684d..090cc1739 100644
--- a/src/shader_recompiler/frontend/ir/value.h
+++ b/src/shader_recompiler/frontend/ir/value.h
@@ -395,4 +395,17 @@ inline f64 Value::F64() const {
return inst.GetOpcode() == Opcode::Phi;
}
+[[nodiscard]] inline bool IsUndef(const Inst& inst) {
+ switch (inst.GetOpcode()) {
+ case Opcode::UndefU1:
+ case Opcode::UndefU8:
+ case Opcode::UndefU16:
+ case Opcode::UndefU32:
+ case Opcode::UndefU64:
+ return true;
+ default:
+ return false;
+ }
+}
+
} // namespace Shader::IR