Merge pull request #6585 from ameerj/hades

Shader Decompiler Rewrite

1 files changed, 67 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_select.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_select.cpp
new file mode 100644
index 000000000..68fff613c
--- /dev/null
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_select.cpp
@@ -0,0 +1,67 @@
+
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "shader_recompiler/backend/glasm/emit_context.h"
+#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
+#include "shader_recompiler/frontend/ir/value.h"
+
+namespace Shader::Backend::GLASM {
+
+void EmitSelectU1(EmitContext& ctx, IR::Inst& inst, ScalarS32 cond, ScalarS32 true_value,
+                  ScalarS32 false_value) {
+    ctx.Add("CMP.S {},{},{},{};", inst, cond, true_value, false_value);
+}
+
+void EmitSelectU8([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarS32 cond,
+                  [[maybe_unused]] ScalarS32 true_value, [[maybe_unused]] ScalarS32 false_value) {
+    throw NotImplementedException("GLASM instruction");
+}
+
+void EmitSelectU16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarS32 cond,
+                   [[maybe_unused]] ScalarS32 true_value, [[maybe_unused]] ScalarS32 false_value) {
+    throw NotImplementedException("GLASM instruction");
+}
+
+void EmitSelectU32(EmitContext& ctx, IR::Inst& inst, ScalarS32 cond, ScalarS32 true_value,
+                   ScalarS32 false_value) {
+    ctx.Add("CMP.S {},{},{},{};", inst, cond, true_value, false_value);
+}
+
+void EmitSelectU64(EmitContext& ctx, IR::Inst& inst, ScalarS32 cond, Register true_value,
+                   Register false_value) {
+    ctx.reg_alloc.InvalidateConditionCodes();
+    const Register ret{ctx.reg_alloc.LongDefine(inst)};
+    if (ret == true_value) {
+        ctx.Add("MOV.S.CC RC.x,{};"
+                "MOV.U64 {}.x(EQ.x),{};",
+                cond, ret, false_value);
+    } else if (ret == false_value) {
+        ctx.Add("MOV.S.CC RC.x,{};"
+                "MOV.U64 {}.x(NE.x),{};",
+                cond, ret, true_value);
+    } else {
+        ctx.Add("MOV.S.CC RC.x,{};"
+                "MOV.U64 {}.x,{};"
+                "MOV.U64 {}.x(NE.x),{};",
+                cond, ret, false_value, ret, true_value);
+    }
+}
+
+void EmitSelectF16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarS32 cond,
+                   [[maybe_unused]] Register true_value, [[maybe_unused]] Register false_value) {
+    throw NotImplementedException("GLASM instruction");
+}
+
+void EmitSelectF32(EmitContext& ctx, IR::Inst& inst, ScalarS32 cond, ScalarS32 true_value,
+                   ScalarS32 false_value) {
+    ctx.Add("CMP.S {},{},{},{};", inst, cond, true_value, false_value);
+}
+
+void EmitSelectF64([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarS32 cond,
+                   [[maybe_unused]] Register true_value, [[maybe_unused]] Register false_value) {
+    throw NotImplementedException("GLASM instruction");
+}
+
+} // namespace Shader::Backend::GLASM