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-rw-r--r--test/CodeGen/AMDGPU/promote-alloca-lifetime.ll24
1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/promote-alloca-lifetime.ll b/test/CodeGen/AMDGPU/promote-alloca-lifetime.ll
new file mode 100644
index 000000000000..eeda19fa27ac
--- /dev/null
+++ b/test/CodeGen/AMDGPU/promote-alloca-lifetime.ll
@@ -0,0 +1,24 @@
+; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -amdgpu-promote-alloca %s | FileCheck -check-prefix=OPT %s
+
+declare void @llvm.lifetime.start(i64, i8* nocapture) #0
+declare void @llvm.lifetime.end(i64, i8* nocapture) #0
+
+; OPT-LABEL: @use_lifetime_promotable_lds(
+; OPT-NOT: alloca i32
+; OPT-NOT: llvm.lifetime
+; OPT: store i32 %tmp3, i32 addrspace(3)*
+define void @use_lifetime_promotable_lds(i32 addrspace(1)* %arg) #2 {
+bb:
+ %tmp = alloca i32, align 4
+ %tmp1 = bitcast i32* %tmp to i8*
+ call void @llvm.lifetime.start(i64 4, i8* %tmp1)
+ %tmp2 = getelementptr inbounds i32, i32 addrspace(1)* %arg, i64 1
+ %tmp3 = load i32, i32 addrspace(1)* %tmp2
+ store i32 %tmp3, i32* %tmp
+ call void @llvm.lifetime.end(i64 4, i8* %tmp1)
+ ret void
+}
+
+attributes #0 = { argmemonly nounwind }
+attributes #1 = { nounwind readnone }
+attributes #2 = { nounwind }