diff options
| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2013-11-15 04:42:23 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2013-11-15 04:42:23 +0000 |
| commit | 509a492442b7e889d615d3b451629c81a810aef1 (patch) | |
| tree | d4facf4559ba4d9a84d7792f6e697ea2a7909d2d /lib/Target/R600/AMDGPUISelLowering.h | |
| parent | a0846f414366462d24e65b48deea6b2b85f6616b (diff) | |
| download | llvm-509a492442b7e889d615d3b451629c81a810aef1.tar.gz llvm-509a492442b7e889d615d3b451629c81a810aef1.tar.bz2 llvm-509a492442b7e889d615d3b451629c81a810aef1.tar.xz | |
Add target hook to prevent folding some bitcasted loads.
This is to avoid this transformation in some cases:
fold (conv (load x)) -> (load (conv*)x)
On architectures that don't natively support some vector
loads efficiently casting the load to a smaller vector of
larger types and loading is more efficient.
Patch by Micah Villmow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194783 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/R600/AMDGPUISelLowering.h')
| -rw-r--r-- | lib/Target/R600/AMDGPUISelLowering.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Target/R600/AMDGPUISelLowering.h b/lib/Target/R600/AMDGPUISelLowering.h index dacb086dd5..2dfd3cf492 100644 --- a/lib/Target/R600/AMDGPUISelLowering.h +++ b/lib/Target/R600/AMDGPUISelLowering.h @@ -77,6 +77,7 @@ public: virtual bool isFAbsFree(EVT VT) const; virtual bool isFNegFree(EVT VT) const; virtual MVT getVectorIdxTy() const; + virtual bool isLoadBitCastBeneficial(EVT, EVT) const LLVM_OVERRIDE; virtual SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, const SmallVectorImpl<ISD::OutputArg> &Outs, |