InferAddressSpaces: Don't replace volatile users

llvm-svn: 293582

1 files changed, 82 insertions, 0 deletions

diff --git a/llvm/test/Transforms/InferAddressSpaces/AMDGPU/volatile.ll b/llvm/test/Transforms/InferAddressSpaces/AMDGPU/volatile.ll
new file mode 100644
index 00000000000..57dff1fea2f
--- /dev/null
+++ b/llvm/test/Transforms/InferAddressSpaces/AMDGPU/volatile.ll
@@ -0,0 +1,82 @@
+; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -infer-address-spaces %s | FileCheck %s
+
+; Check that volatile users of addrspacecast are not replaced.
+
+; CHECK-LABEL: @volatile_load_flat_from_global(
+; CHECK: load volatile i32, i32 addrspace(4)*
+; CHECK: store i32 %val, i32 addrspace(1)*
+define void @volatile_load_flat_from_global(i32 addrspace(1)* nocapture %input, i32 addrspace(1)* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32 addrspace(1)* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32 addrspace(1)* %output to i32 addrspace(4)*
+  %val = load volatile i32, i32 addrspace(4)* %tmp0, align 4
+  store i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+; CHECK-LABEL: @volatile_load_flat_from_constant(
+; CHECK: load volatile i32, i32 addrspace(4)*
+; CHECK: store i32 %val, i32 addrspace(1)*
+define void @volatile_load_flat_from_constant(i32 addrspace(2)* nocapture %input, i32 addrspace(1)* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32 addrspace(2)* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32 addrspace(1)* %output to i32 addrspace(4)*
+  %val = load volatile i32, i32 addrspace(4)* %tmp0, align 4
+  store i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+; CHECK-LABEL: @volatile_load_flat_from_group(
+; CHECK: load volatile i32, i32 addrspace(4)*
+; CHECK: store i32 %val, i32 addrspace(3)*
+define void @volatile_load_flat_from_group(i32 addrspace(3)* nocapture %input, i32 addrspace(3)* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32 addrspace(3)* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32 addrspace(3)* %output to i32 addrspace(4)*
+  %val = load volatile i32, i32 addrspace(4)* %tmp0, align 4
+  store i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+; CHECK-LABEL: @volatile_load_flat_from_private(
+; CHECK: load volatile i32, i32 addrspace(4)*
+; CHECK: store i32 %val, i32*
+define void @volatile_load_flat_from_private(i32* nocapture %input, i32* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32* %output to i32 addrspace(4)*
+  %val = load volatile i32, i32 addrspace(4)* %tmp0, align 4
+  store i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+; CHECK-LABEL: @volatile_store_flat_to_global(
+; CHECK: load i32, i32 addrspace(1)*
+; CHECK: store volatile i32 %val, i32 addrspace(4)*
+define void @volatile_store_flat_to_global(i32 addrspace(1)* nocapture %input, i32 addrspace(1)* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32 addrspace(1)* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32 addrspace(1)* %output to i32 addrspace(4)*
+  %val = load i32, i32 addrspace(4)* %tmp0, align 4
+  store volatile i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+; CHECK-LABEL: @volatile_store_flat_to_group(
+; CHECK: load i32, i32 addrspace(3)*
+; CHECK: store volatile i32 %val, i32 addrspace(4)*
+define void @volatile_store_flat_to_group(i32 addrspace(3)* nocapture %input, i32 addrspace(3)* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32 addrspace(3)* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32 addrspace(3)* %output to i32 addrspace(4)*
+  %val = load i32, i32 addrspace(4)* %tmp0, align 4
+  store volatile i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+; CHECK-LABEL: @volatile_store_flat_to_private(
+; CHECK: load i32, i32*
+; CHECK: store volatile i32 %val, i32 addrspace(4)*
+define void @volatile_store_flat_to_private(i32* nocapture %input, i32* nocapture %output) #0 {
+  %tmp0 = addrspacecast i32* %input to i32 addrspace(4)*
+  %tmp1 = addrspacecast i32* %output to i32 addrspace(4)*
+  %val = load i32, i32 addrspace(4)* %tmp0, align 4
+  store volatile i32 %val, i32 addrspace(4)* %tmp1, align 4
+  ret void
+}
+
+attributes #0 = { nounwind }
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