[PowerPC] Make AddrSpaceCast noop
PowerPC targets do not use address spaces. As a result, we can get selection
failures with address space casts. This patch makes those casts noops.
Patch by Valentin Churavy.
Differential revision: https://reviews.llvm.org/D43781
llvm-svn: 327877
diff --git a/llvm/test/CodeGen/PowerPC/addrspacecast.ll b/llvm/test/CodeGen/PowerPC/addrspacecast.ll
new file mode 100644
index 0000000..db9d481a
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/addrspacecast.ll
@@ -0,0 +1,22 @@
+; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu %s -o - | FileCheck %s
+
+; Check that codegen for an addrspace cast succeeds without error.
+define <4 x i32 addrspace(1)*> @f (<4 x i32*> %x) {
+ %1 = addrspacecast <4 x i32*> %x to <4 x i32 addrspace(1)*>
+ ret <4 x i32 addrspace(1)*> %1
+ ; CHECK-LABEL: @f
+}
+
+; Check that fairly complicated addrspace cast and operations succeed without error.
+%struct = type opaque
+define void @g (%struct addrspace(10)** %x) {
+ %1 = load %struct addrspace(10)*, %struct addrspace(10)** %x
+ %2 = addrspacecast %struct addrspace(10)* %1 to %struct addrspace(11)*
+ %3 = bitcast %struct addrspace(11)* %2 to i8 addrspace(11)*
+ %4 = getelementptr i8, i8 addrspace(11)* %3, i64 16
+ %5 = bitcast i8 addrspace(11)* %4 to %struct addrspace(10)* addrspace(11)*
+ %6 = load %struct addrspace(10)*, %struct addrspace(10)* addrspace(11)* %5
+ store %struct addrspace(10)* %6, %struct addrspace(10)** undef
+ ret void
+ ; CHECK-LABEL: @g
+}