36 lines
953 B
LLVM
36 lines
953 B
LLVM
; RUN: opt -O1 -S -mtriple=amdgcn-unknown-amdhsa -amdgpu-internalize-symbols < %s | FileCheck %s
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; CHECK-NOT: unused
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; CHECK-NOT: foo_used
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; CHECK: gvar_used
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; CHECK: main_kernel
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@gvar_unused = addrspace(1) global i32 undef, align 4
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@gvar_used = addrspace(1) global i32 undef, align 4
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; Function Attrs: alwaysinline nounwind
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define void @foo_unused(i32 addrspace(1)* %out) local_unnamed_addr #1 {
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entry:
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store i32 1, i32 addrspace(1)* %out
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ret void
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}
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; Function Attrs: alwaysinline nounwind
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define void @foo_used(i32 addrspace(1)* %out, i32 %tid) local_unnamed_addr #1 {
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entry:
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store i32 %tid, i32 addrspace(1)* %out
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ret void
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}
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define amdgpu_kernel void @main_kernel() {
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entry:
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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tail call void @foo_used(i32 addrspace(1)* @gvar_used, i32 %tid) nounwind
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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attributes #0 = { nounwind readnone }
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attributes #1 = { alwaysinline nounwind }
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