AMDGPU/R600: Replace barrier intrinsics

llvm-svn: 275870

1 files changed, 31 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/AMDGPU/llvm.r600.group.barrier.ll b/llvm/test/CodeGen/AMDGPU/llvm.r600.group.barrier.ll
new file mode 100644
index 00000000000..e4e6dd8e106
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/llvm.r600.group.barrier.ll
@@ -0,0 +1,31 @@
+; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=EG  %s
+
+; EG-LABEL: {{^}}test_group_barrier:
+; EG: GROUP_BARRIER
+define void @test_group_barrier(i32 addrspace(1)* %out) #0 {
+entry:
+  %tmp = call i32 @llvm.r600.read.tidig.x()
+  %tmp1 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp
+  store i32 %tmp, i32 addrspace(1)* %tmp1
+  call void @llvm.r600.group.barrier()
+  %tmp2 = call i32 @llvm.r600.read.local.size.x()
+  %tmp3 = sub i32 %tmp2, 1
+  %tmp4 = sub i32 %tmp3, %tmp
+  %tmp5 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp4
+  %tmp6 = load i32, i32 addrspace(1)* %tmp5
+  store i32 %tmp6, i32 addrspace(1)* %tmp1
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+declare void @llvm.r600.group.barrier() #1
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.r600.read.tidig.x() #2
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.r600.read.local.size.x() #2
+
+attributes #0 = { nounwind }
+attributes #1 = { convergent nounwind }
+attributes #2 = { nounwind readnone }