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[LLVM][NFC] Use used's element type if available #116804

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Merged
merged 5 commits into from
Nov 20, 2024
Merged

[LLVM][NFC] Use used's element type if available #116804

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02a6074
Use `used`'s element type if it's available.
AlexVlx Nov 19, 2024
84e4008
Merge branch 'main' of https://github.com/llvm/llvm-project into bitc…
AlexVlx Nov 20, 2024
587ca7c
Add test.
AlexVlx Nov 20, 2024
ca659d4
Make test robust.
AlexVlx Nov 20, 2024
cac19f2
Merge branch 'main' of https://github.com/llvm/llvm-project into bitc…
AlexVlx Nov 20, 2024
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8 changes: 8 additions & 0 deletions clang/test/CodeGen/embed-bitcode-marker-with-nonzero-as.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
// RUN: %clang_cc1 -triple spirv64-amd-amdhsa -emit-llvm -fcuda-is-device -fembed-bitcode=marker -x hip %s -o - \
// RUN: | FileCheck %s --check-prefix=CHECK

// CHECK: @llvm.embedded.module = private addrspace(1) constant [0 x i8] zeroinitializer, section ".llvmbc", align 1
// CHECK-NEXT: @llvm.cmdline = private addrspace(1) constant [387 x i8] c"{{.*}}", section ".llvmcmd", align 1
// CHECK-NEXT: @llvm.compiler.used = appending addrspace(1) global [5 x ptr addrspace(4)] [ptr addrspace(4) addrspacecast (ptr addrspace(1) @foo.managed to ptr addrspace(4)), ptr addrspace(4) addrspacecast (ptr addrspace(1) @foo to ptr addrspace(4)), ptr addrspace(4) addrspacecast (ptr addrspace(1) @__hip_cuid_ to ptr addrspace(4)), ptr addrspace(4) addrspacecast (ptr addrspace(1) @llvm.embedded.module to ptr addrspace(4)), ptr addrspace(4) addrspacecast (ptr addrspace(1) @llvm.cmdline to ptr addrspace(4))], section "llvm.metadata"

__attribute__((managed)) int foo = 42;
3 changes: 2 additions & 1 deletion llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
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Expand Up @@ -5501,8 +5501,9 @@ void llvm::embedBitcodeInModule(llvm::Module &M, llvm::MemoryBufferRef Buf,
// Save llvm.compiler.used and remove it.
SmallVector<Constant *, 2> UsedArray;
SmallVector<GlobalValue *, 4> UsedGlobals;
Type *UsedElementType = PointerType::getUnqual(M.getContext());
GlobalVariable *Used = collectUsedGlobalVariables(M, UsedGlobals, true);
Type *UsedElementType = Used ? Used->getValueType()->getArrayElementType()
: PointerType::getUnqual(M.getContext());
for (auto *GV : UsedGlobals) {
if (GV->getName() != "llvm.embedded.module" &&
GV->getName() != "llvm.cmdline")
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