From c43f6fa55aca23365c86c6ec1737d42be74d9d3e Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Tue, 7 Jan 2025 22:26:31 -0800
Subject: Lower varying parameters as pointers instead of SSA values. (#5919)

* Add executable test on matrix-typed vertex input.
* Fix emit logic of matrix layout qualifier.
* Pass fragment shader varying input by constref to allow EvaluateAttributeAtCentroid etc. to be implemented correctly.
---
 source/slang/slang-parser.cpp | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

(limited to 'source/slang/slang-parser.cpp')

diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp
index 22491c848..c275a868b 100644
--- a/source/slang/slang-parser.cpp
+++ b/source/slang/slang-parser.cpp
@@ -7531,12 +7531,6 @@ static IRFloatingPointValue _foldFloatPrefixOp(TokenType tokenType, IRFloatingPo
 
 static std::optional<SPIRVAsmOperand> parseSPIRVAsmOperand(Parser* parser)
 {
-    const auto slangIdentOperand = [&](auto flavor)
-    {
-        auto token = parser->tokenReader.peekToken();
-        return SPIRVAsmOperand{flavor, token, parseAtomicExpr(parser)};
-    };
-
     const auto slangTypeExprOperand = [&](auto flavor)
     {
         auto tok = parser->tokenReader.peekToken();
@@ -7673,12 +7667,13 @@ static std::optional<SPIRVAsmOperand> parseSPIRVAsmOperand(Parser* parser)
     // A &foo variable reference (for the address of foo)
     else if (AdvanceIf(parser, TokenType::OpBitAnd))
     {
-        return slangIdentOperand(SPIRVAsmOperand::SlangValueAddr);
+        Expr* expr = parsePostfixExpr(parser);
+        return SPIRVAsmOperand{SPIRVAsmOperand::SlangValueAddr, Token{}, expr};
     }
     // A $foo variable
     else if (AdvanceIf(parser, TokenType::Dollar))
     {
-        Expr* expr = parseAtomicExpr(parser);
+        Expr* expr = parsePostfixExpr(parser);
         return SPIRVAsmOperand{SPIRVAsmOperand::SlangValue, Token{}, expr};
     }
     // A $$foo type
-- 
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