Author: Wenju He
Date: 2026-03-02T12:24:55+08:00
New Revision: f1620e44412fd01a453f6f36d561bb395e1c0627

URL: 
https://github.com/llvm/llvm-project/commit/f1620e44412fd01a453f6f36d561bb395e1c0627
DIFF: 
https://github.com/llvm/llvm-project/commit/f1620e44412fd01a453f6f36d561bb395e1c0627.diff

LOG: [OpenCL] Enable __cl_clang_function_scope_local_variables for AMDGPU and 
NVPTX targets (#183892)

I'd like to use this extension in our downstream SYCL compiler to
implement the __clc__group_scratch helper function, allowing us to
replace .ll files with .cl files for the two targets:
https://github.com/intel/llvm/blob/sycl/libclc/libspirv/lib/amdgcn-amdhsa/group/collectives_helpers.ll
https://github.com/intel/llvm/blob/sycl/libclc/libspirv/lib/ptx-nvidiacl/group/collectives_helpers.ll

Added: 
    

Modified: 
    clang/lib/Basic/Targets/AMDGPU.h
    clang/lib/Basic/Targets/NVPTX.h
    clang/test/Misc/amdgcn.languageOptsOpenCL.cl
    clang/test/Misc/nvptx.languageOptsOpenCL.cl

Removed: 
    


################################################################################
diff  --git a/clang/lib/Basic/Targets/AMDGPU.h 
b/clang/lib/Basic/Targets/AMDGPU.h
index 35bca74505b37..08ccc668f78b6 100644
--- a/clang/lib/Basic/Targets/AMDGPU.h
+++ b/clang/lib/Basic/Targets/AMDGPU.h
@@ -302,6 +302,7 @@ class LLVM_LIBRARY_VISIBILITY AMDGPUTargetInfo final : 
public TargetInfo {
     Opts["cl_clang_storage_class_specifiers"] = true;
     Opts["__cl_clang_variadic_functions"] = true;
     Opts["__cl_clang_function_pointers"] = true;
+    Opts["__cl_clang_function_scope_local_variables"] = true;
     Opts["__cl_clang_non_portable_kernel_param_types"] = true;
     Opts["__cl_clang_bitfields"] = true;
 

diff  --git a/clang/lib/Basic/Targets/NVPTX.h b/clang/lib/Basic/Targets/NVPTX.h
index 9bd0cc36d12b4..35fff8d0aa9e6 100644
--- a/clang/lib/Basic/Targets/NVPTX.h
+++ b/clang/lib/Basic/Targets/NVPTX.h
@@ -165,6 +165,7 @@ class LLVM_LIBRARY_VISIBILITY NVPTXTargetInfo : public 
TargetInfo {
     Opts["cl_clang_storage_class_specifiers"] = true;
     Opts["__cl_clang_function_pointers"] = true;
     Opts["__cl_clang_variadic_functions"] = true;
+    Opts["__cl_clang_function_scope_local_variables"] = true;
     Opts["__cl_clang_non_portable_kernel_param_types"] = true;
     Opts["__cl_clang_bitfields"] = true;
 

diff  --git a/clang/test/Misc/amdgcn.languageOptsOpenCL.cl 
b/clang/test/Misc/amdgcn.languageOptsOpenCL.cl
index ee33f86080e82..fd42912854020 100644
--- a/clang/test/Misc/amdgcn.languageOptsOpenCL.cl
+++ b/clang/test/Misc/amdgcn.languageOptsOpenCL.cl
@@ -30,6 +30,11 @@
 #endif
 #pragma OPENCL EXTENSION __cl_clang_variadic_functions : enable
 
+#ifndef __cl_clang_function_scope_local_variables
+#error "Missing __cl_clang_function_scope_local_variables define"
+#endif
+#pragma OPENCL EXTENSION __cl_clang_function_scope_local_variables : enable
+
 #ifndef __cl_clang_non_portable_kernel_param_types
 #error "Missing __cl_clang_non_portable_kernel_param_types define"
 #endif

diff  --git a/clang/test/Misc/nvptx.languageOptsOpenCL.cl 
b/clang/test/Misc/nvptx.languageOptsOpenCL.cl
index 2610cfafc257b..3182ed534a504 100644
--- a/clang/test/Misc/nvptx.languageOptsOpenCL.cl
+++ b/clang/test/Misc/nvptx.languageOptsOpenCL.cl
@@ -28,6 +28,11 @@
 #endif
 #pragma OPENCL EXTENSION __cl_clang_variadic_functions : enable
 
+#ifndef __cl_clang_function_scope_local_variables
+#error "Missing __cl_clang_function_scope_local_variables define"
+#endif
+#pragma OPENCL EXTENSION __cl_clang_function_scope_local_variables : enable
+
 #ifndef __cl_clang_non_portable_kernel_param_types
 #error "Missing __cl_clang_non_portable_kernel_param_types define"
 #endif


        
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