[HLSL] Reorder arguments of __builtin_hlsl_resource_handlefromimplicitbinding #155861
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Reorder the arguments of handle initialization builtins to match the order of the llvm intrinsics, and also to match the arguments on the static create methods for resources (coming soon).
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Icohedron
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Sep 3, 2025
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@llvm/pr-subscribers-clang @llvm/pr-subscribers-hlsl Author: Helena Kotas (hekota) ChangesReorder the arguments of Previously the arguments were in the same order as the resource class constructor for implicit binding. The Related to #154221. Full diff: https://github.com/llvm/llvm-project/pull/155861.diff 6 Files Affected:
diff --git a/clang/lib/CodeGen/CGHLSLBuiltins.cpp b/clang/lib/CodeGen/CGHLSLBuiltins.cpp
index 58165185b6711..483920f2392cd 100644
--- a/clang/lib/CodeGen/CGHLSLBuiltins.cpp
+++ b/clang/lib/CodeGen/CGHLSLBuiltins.cpp
@@ -348,10 +348,10 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
}
case Builtin::BI__builtin_hlsl_resource_handlefromimplicitbinding: {
llvm::Type *HandleTy = CGM.getTypes().ConvertType(E->getType());
- Value *SpaceOp = EmitScalarExpr(E->getArg(1));
- Value *RangeOp = EmitScalarExpr(E->getArg(2));
- Value *IndexOp = EmitScalarExpr(E->getArg(3));
- Value *OrderID = EmitScalarExpr(E->getArg(4));
+ Value *OrderID = EmitScalarExpr(E->getArg(1));
+ Value *SpaceOp = EmitScalarExpr(E->getArg(2));
+ Value *RangeOp = EmitScalarExpr(E->getArg(3));
+ Value *IndexOp = EmitScalarExpr(E->getArg(4));
Value *Name = EmitScalarExpr(E->getArg(5));
// FIXME: NonUniformResourceIndex bit is not yet implemented
// (llvm/llvm-project#135452)
diff --git a/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp b/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
index 806800cb7b213..7830cdd18c6cd 100644
--- a/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
+++ b/clang/lib/Sema/HLSLBuiltinTypeDeclBuilder.cpp
@@ -670,7 +670,7 @@ BuiltinTypeDeclBuilder::addHandleConstructorFromImplicitBinding() {
.addParam("orderId", AST.UnsignedIntTy)
.addParam("name", AST.getPointerType(AST.CharTy.withConst()))
.callBuiltin("__builtin_hlsl_resource_handlefromimplicitbinding",
- HandleType, PH::Handle, PH::_0, PH::_1, PH::_2, PH::_3,
+ HandleType, PH::Handle, PH::_3, PH::_0, PH::_1, PH::_2,
PH::_4)
.assign(PH::Handle, PH::LastStmt)
.finalize();
diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index 6a68fa2ed7a8b..c12b35308e127 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -2853,8 +2853,8 @@ bool SemaHLSL::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
if (SemaRef.checkArgCount(TheCall, 6) ||
CheckResourceHandle(&SemaRef, TheCall, 0) ||
CheckArgTypeMatches(&SemaRef, TheCall->getArg(1), AST.UnsignedIntTy) ||
- CheckArgTypeMatches(&SemaRef, TheCall->getArg(2), AST.IntTy) ||
- CheckArgTypeMatches(&SemaRef, TheCall->getArg(3), AST.UnsignedIntTy) ||
+ CheckArgTypeMatches(&SemaRef, TheCall->getArg(2), AST.UnsignedIntTy) ||
+ CheckArgTypeMatches(&SemaRef, TheCall->getArg(3), AST.IntTy) ||
CheckArgTypeMatches(&SemaRef, TheCall->getArg(4), AST.UnsignedIntTy) ||
CheckArgTypeMatches(&SemaRef, TheCall->getArg(5),
AST.getPointerType(AST.CharTy.withConst())))
diff --git a/clang/test/AST/HLSL/ByteAddressBuffers-AST.hlsl b/clang/test/AST/HLSL/ByteAddressBuffers-AST.hlsl
index f85194496942b..90794eb69ef46 100644
--- a/clang/test/AST/HLSL/ByteAddressBuffers-AST.hlsl
+++ b/clang/test/AST/HLSL/ByteAddressBuffers-AST.hlsl
@@ -97,10 +97,10 @@ RESOURCE Buffer;
// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} '__builtin_hlsl_resource_handlefromimplicitbinding'
// CHECK-NEXT: MemberExpr {{.*}} lvalue .__handle
// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::[[RESOURCE]]' lvalue implicit this
+// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'orderId' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'spaceNo' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'int' ParmVar {{.*}} 'range' 'int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'index' 'unsigned int'
-// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'orderId' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'const char *' ParmVar {{.*}} 'name' 'const char *'
// CHECK-NEXT: AlwaysInlineAttr
diff --git a/clang/test/AST/HLSL/StructuredBuffers-AST.hlsl b/clang/test/AST/HLSL/StructuredBuffers-AST.hlsl
index 6ee7145c7e538..e028936e397ac 100644
--- a/clang/test/AST/HLSL/StructuredBuffers-AST.hlsl
+++ b/clang/test/AST/HLSL/StructuredBuffers-AST.hlsl
@@ -144,10 +144,10 @@ RESOURCE<float> Buffer;
// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} '__builtin_hlsl_resource_handlefromimplicitbinding'
// CHECK-NEXT: MemberExpr {{.*}} lvalue .__handle
// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::[[RESOURCE]]<element_type>' lvalue implicit this
+// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'orderId' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'spaceNo' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'int' ParmVar {{.*}} 'range' 'int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'index' 'unsigned int'
-// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'orderId' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'const char *' ParmVar {{.*}} 'name' 'const char *'
// CHECK-NEXT: AlwaysInlineAttr
diff --git a/clang/test/AST/HLSL/TypedBuffers-AST.hlsl b/clang/test/AST/HLSL/TypedBuffers-AST.hlsl
index e7f000e9c1b70..02c8cf86c8c8b 100644
--- a/clang/test/AST/HLSL/TypedBuffers-AST.hlsl
+++ b/clang/test/AST/HLSL/TypedBuffers-AST.hlsl
@@ -119,10 +119,10 @@ RESOURCE<float> Buffer;
// CHECK-NEXT: DeclRefExpr {{.*}} '<builtin fn type>' Function {{.*}} '__builtin_hlsl_resource_handlefromimplicitbinding'
// CHECK-NEXT: MemberExpr {{.*}} lvalue .__handle
// CHECK-NEXT: CXXThisExpr {{.*}} 'hlsl::[[RESOURCE]]<element_type>' lvalue implicit this
+// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'orderId' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'spaceNo' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'int' ParmVar {{.*}} 'range' 'int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'index' 'unsigned int'
-// CHECK-NEXT: DeclRefExpr {{.*}} 'unsigned int' ParmVar {{.*}} 'orderId' 'unsigned int'
// CHECK-NEXT: DeclRefExpr {{.*}} 'const char *' ParmVar {{.*}} 'name' 'const char *'
// CHECK-NEXT: AlwaysInlineAttr
|
…create-0-reorder-builtin-args
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Reorder the arguments of
__builtin_hlsl_resource_handlefromimplicitbindingbuiltins to match the order of thellvm.dx.resource.handlefromimplicitbindingintrinsics, and also to match the arguments on the static create methods for resource initialization (described here).Previously the arguments were in the same order as the resource class constructor for implicit binding. The
orderIdargument was intentionally at index3to make sure explicit & implicit binding constructors have different signature. Since we are going to replace the constructors that have binding info with static create methods, this is no longer necessary, and it is better for the argument order to match.Related to #154221.