[PATCH] D94060: [OpenMP][AMDGPU] Use AMDGPU_KERNEL calling convention for entry function
Pushpinder Singh via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Jan 4 20:54:11 PST 2021
pdhaliwal created this revision.
pdhaliwal added reviewers: JonChesterfield, jdoerfert, ABataev.
Herald added subscribers: guansong, t-tye, tpr, dstuttard, yaxunl, jvesely, kzhuravl.
pdhaliwal requested review of this revision.
Herald added subscribers: cfe-commits, sstefan1, wdng.
Herald added a project: clang.
AMDGPU backend requires entry functions/kernels to have AMDGPU_KERNEL
calling convention for proper linking.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D94060
Files:
clang/lib/CodeGen/CGOpenMPRuntime.cpp
clang/test/OpenMP/amdgcn_target_codegen.cpp
Index: clang/test/OpenMP/amdgcn_target_codegen.cpp
===================================================================
--- clang/test/OpenMP/amdgcn_target_codegen.cpp
+++ clang/test/OpenMP/amdgcn_target_codegen.cpp
@@ -9,7 +9,7 @@
#define N 1000
int test_amdgcn_target_tid_threads() {
-// CHECK-LABEL: define weak void @{{.*}}test_amdgcn_target_tid_threads
+// CHECK-LABEL: define weak amdgpu_kernel void @{{.*}}test_amdgcn_target_tid_threads
int arr[N];
@@ -26,7 +26,7 @@
}
int test_amdgcn_target_tid_threads_simd() {
-// CHECK-LABEL: define weak void @{{.*}}test_amdgcn_target_tid_threads_simd
+// CHECK-LABEL: define weak amdgpu_kernel void @{{.*}}test_amdgcn_target_tid_threads_simd
int arr[N];
Index: clang/lib/CodeGen/CGOpenMPRuntime.cpp
===================================================================
--- clang/lib/CodeGen/CGOpenMPRuntime.cpp
+++ clang/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -6471,6 +6471,8 @@
OutlinedFnID = llvm::ConstantExpr::getBitCast(OutlinedFn, CGM.Int8PtrTy);
OutlinedFn->setLinkage(llvm::GlobalValue::WeakAnyLinkage);
OutlinedFn->setDSOLocal(false);
+ if (CGM.getTriple().isAMDGCN())
+ OutlinedFn->setCallingConv(llvm::CallingConv::AMDGPU_KERNEL);
} else {
std::string Name = getName({EntryFnName, "region_id"});
OutlinedFnID = new llvm::GlobalVariable(
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