TTI: Improve default costs for addrspacecast

For some reason multiple places need to do this, and the variant the
loop unroller and inliner use was not handling it.

Also, introduce a new wrapper to be slightly more precise, since on
AMDGPU some addrspacecasts are free, but not no-ops.

llvm-svn: 362436

2 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index ac90399b980..1ca11da247e 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -1261,8 +1261,8 @@ bool SITargetLowering::isMemOpHasNoClobberedMemOperand(const SDNode *N) const {
   return I && I->getMetadata("amdgpu.noclobber");
 }
 
-bool SITargetLowering::isCheapAddrSpaceCast(unsigned SrcAS,
-                                            unsigned DestAS) const {
+bool SITargetLowering::isFreeAddrSpaceCast(unsigned SrcAS,
+                                           unsigned DestAS) const {
   // Flat -> private/local is a simple truncate.
   // Flat -> global is no-op
   if (SrcAS == AMDGPUAS::FLAT_ADDRESS)
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.h b/llvm/lib/Target/AMDGPU/SIISelLowering.h
index a63d75184b3..4d7dac91cd1 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.h
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.h
@@ -246,7 +246,7 @@ public:
   bool isMemOpUniform(const SDNode *N) const;
   bool isMemOpHasNoClobberedMemOperand(const SDNode *N) const;
   bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
-  bool isCheapAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
+  bool isFreeAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
 
   TargetLoweringBase::LegalizeTypeAction
   getPreferredVectorAction(MVT VT) const override;