diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.h | 5 | ||||
| -rw-r--r-- | llvm/test/CodeGen/PowerPC/addrspacecast.ll | 22 |
2 files changed, 27 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h index b3215a84829..4dc1b11e992 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.h +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h @@ -884,6 +884,11 @@ namespace llvm { } }; + bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override { + // Addrspacecasts are always noops. + return true; + } + bool canReuseLoadAddress(SDValue Op, EVT MemVT, ReuseLoadInfo &RLI, SelectionDAG &DAG, ISD::LoadExtType ET = ISD::NON_EXTLOAD) const; diff --git a/llvm/test/CodeGen/PowerPC/addrspacecast.ll b/llvm/test/CodeGen/PowerPC/addrspacecast.ll new file mode 100644 index 00000000000..db9d481ac6a --- /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 +} |
