From 1269a0cf8b3844c1a9bb06c843a7698b0a9643d5 Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Sun, 30 May 2021 17:27:00 -0400
Subject: glsl: Rework variable allocator to allow for variable reuse

---
 .../backend/glsl/emit_glsl_memory.cpp              | 28 +++++++++++-----------
 1 file changed, 14 insertions(+), 14 deletions(-)

(limited to 'src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp')

diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
index c66b7b788..8ce186733 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
@@ -12,7 +12,7 @@ namespace Shader::Backend::GLSL {
 void EmitLoadStorageU8([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
                        [[maybe_unused]] const IR::Value& binding,
                        [[maybe_unused]] const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddU32("{}=bitfieldExtract(ssbo{}[{}/4],int({}%4)*8,8);", inst, binding.U32(), offset_var,
                offset_var);
 }
@@ -20,7 +20,7 @@ void EmitLoadStorageU8([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
 void EmitLoadStorageS8([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
                        [[maybe_unused]] const IR::Value& binding,
                        [[maybe_unused]] const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddS32("{}=bitfieldExtract(int(ssbo{}[{}/4]),int({}%4)*8,8);", inst, binding.U32(),
                offset_var, offset_var);
 }
@@ -28,7 +28,7 @@ void EmitLoadStorageS8([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
 void EmitLoadStorageU16([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
                         [[maybe_unused]] const IR::Value& binding,
                         [[maybe_unused]] const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddU32("{}=bitfieldExtract(ssbo{}[{}/4],int(({}/2)%2)*16,16);", inst, binding.U32(),
                offset_var, offset_var);
 }
@@ -36,27 +36,27 @@ void EmitLoadStorageU16([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
 void EmitLoadStorageS16([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
                         [[maybe_unused]] const IR::Value& binding,
                         [[maybe_unused]] const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddS32("{}=bitfieldExtract(int(ssbo{}[{}/4]),int(({}/2)%2)*16,16);", inst, binding.U32(),
                offset_var, offset_var);
 }
 
 void EmitLoadStorage32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
                        const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddU32("{}=ssbo{}[{}/4];", inst, binding.U32(), offset_var);
 }
 
 void EmitLoadStorage64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
                        const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddU32x2("{}=uvec2(ssbo{}[{}/4],ssbo{}[({}+4)/4]);", inst, binding.U32(), offset_var,
                  binding.U32(), offset_var);
 }
 
 void EmitLoadStorage128(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
                         const IR::Value& offset) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.AddU32x4("{}=uvec4(ssbo{}[{}/4],ssbo{}[({}+4)/4],ssbo{}[({}+8)/4],ssbo{}[({}+12)/4]);",
                  inst, binding.U32(), offset_var, binding.U32(), offset_var, binding.U32(),
                  offset_var, binding.U32(), offset_var);
@@ -66,7 +66,7 @@ void EmitWriteStorageU8([[maybe_unused]] EmitContext& ctx,
                         [[maybe_unused]] const IR::Value& binding,
                         [[maybe_unused]] const IR::Value& offset,
                         [[maybe_unused]] std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]=bitfieldInsert(ssbo{}[{}/4],{},int({}%4)*8,8);", binding.U32(),
             offset_var, binding.U32(), offset_var, value, offset_var);
 }
@@ -75,7 +75,7 @@ void EmitWriteStorageS8([[maybe_unused]] EmitContext& ctx,
                         [[maybe_unused]] const IR::Value& binding,
                         [[maybe_unused]] const IR::Value& offset,
                         [[maybe_unused]] std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]=bitfieldInsert(ssbo{}[{}/4],{},int({}%4)*8,8);", binding.U32(),
             offset_var, binding.U32(), offset_var, value, offset_var);
 }
@@ -84,7 +84,7 @@ void EmitWriteStorageU16([[maybe_unused]] EmitContext& ctx,
                          [[maybe_unused]] const IR::Value& binding,
                          [[maybe_unused]] const IR::Value& offset,
                          [[maybe_unused]] std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]=bitfieldInsert(ssbo{}[{}/4],{},int(({}/2)%2)*16,16);", binding.U32(),
             offset_var, binding.U32(), offset_var, value, offset_var);
 }
@@ -93,20 +93,20 @@ void EmitWriteStorageS16([[maybe_unused]] EmitContext& ctx,
                          [[maybe_unused]] const IR::Value& binding,
                          [[maybe_unused]] const IR::Value& offset,
                          [[maybe_unused]] std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]=bitfieldInsert(ssbo{}[{}/4],{},int(({}/2)%2)*16,16);", binding.U32(),
             offset_var, binding.U32(), offset_var, value, offset_var);
 }
 
 void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
                         std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]={};", binding.U32(), offset_var, value);
 }
 
 void EmitWriteStorage64(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
                         std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]={}.x;", binding.U32(), offset_var, value);
     ctx.Add("ssbo{}[({}+4)/4]={}.y;", binding.U32(), offset_var, value);
 }
@@ -115,7 +115,7 @@ void EmitWriteStorage128([[maybe_unused]] EmitContext& ctx,
                          [[maybe_unused]] const IR::Value& binding,
                          [[maybe_unused]] const IR::Value& offset,
                          [[maybe_unused]] std::string_view value) {
-    const auto offset_var{ctx.reg_alloc.Consume(offset)};
+    const auto offset_var{ctx.var_alloc.Consume(offset)};
     ctx.Add("ssbo{}[{}/4]={}.x;", binding.U32(), offset_var, value);
     ctx.Add("ssbo{}[({}+4)/4]={}.y;", binding.U32(), offset_var, value);
     ctx.Add("ssbo{}[({}+8)/4]={}.z;", binding.U32(), offset_var, value);
-- 
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