[PATCH] D114407: [CUDA][SPIRV] Use OpenCLKernel CC for CUDA -> SPIRV
Artem Belevich via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Dec 6 15:12:18 PST 2021
This revision was automatically updated to reflect the committed changes.
Closed by commit rGabbdc13e6803: [CUDA][SPIRV] Use OpenCLKernel CC for CUDA -> SPIRV (authored by dcastagna, committed by tra).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D114407/new/
https://reviews.llvm.org/D114407
Files:
clang/lib/Sema/SemaType.cpp
clang/test/CodeGenCUDASPIRV/kernel-cc.cu
Index: clang/test/CodeGenCUDASPIRV/kernel-cc.cu
===================================================================
--- /dev/null
+++ clang/test/CodeGenCUDASPIRV/kernel-cc.cu
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -fcuda-is-device -triple spirv32 -o - -emit-llvm -x cuda %s | FileCheck %s
+// RUN: %clang_cc1 -fcuda-is-device -triple spirv64 -o - -emit-llvm -x cuda %s | FileCheck %s
+
+// Verifies that building CUDA targeting SPIR-V {32,64} generates LLVM IR with
+// spir_kernel attributes for kernel functions.
+
+// CHECK: define spir_kernel void @_Z6kernelv()
+
+__attribute__((global)) void kernel() { return; }
Index: clang/lib/Sema/SemaType.cpp
===================================================================
--- clang/lib/Sema/SemaType.cpp
+++ clang/lib/Sema/SemaType.cpp
@@ -3940,6 +3940,20 @@
break;
}
}
+ } else if (S.getLangOpts().CUDA) {
+ // If we're compiling CUDA/HIP code and targeting SPIR-V we need to make
+ // sure the kernels will be marked with the right calling convention so that
+ // they will be visible by the APIs that ingest SPIR-V.
+ llvm::Triple Triple = S.Context.getTargetInfo().getTriple();
+ if (Triple.getArch() == llvm::Triple::spirv32 ||
+ Triple.getArch() == llvm::Triple::spirv64) {
+ for (const ParsedAttr &AL : D.getDeclSpec().getAttributes()) {
+ if (AL.getKind() == ParsedAttr::AT_CUDAGlobal) {
+ CC = CC_OpenCLKernel;
+ break;
+ }
+ }
+ }
}
return CC;
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