SuccessChanges

Summary

  1. [X86][ARM][TargetLowering] Add SrcVT to isExtractSubvectorCheap Summary: Without the SrcVT its hard to know what is really being asked for. For example if your target has 128, 256, and 512 bit vectors. Maybe extracting 128 from 256 is cheap, but maybe extracting 128 from 512 is not. For x86 we do support extracting a quarter of a 512-bit register. But for i1 vectors we don't have isel patterns for extracting arbitrary pieces. So we need this to have a correct implementation of isExtractSubvectorCheap for mask vectors. Reviewers: RKSimon, zvi, efriedma Reviewed By: RKSimon Subscribers: aemerson, javed.absar, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D36649
Revision 310793 by ctopper:
[X86][ARM][TargetLowering] Add SrcVT to isExtractSubvectorCheap

Summary:
Without the SrcVT its hard to know what is really being asked for. For example if your target has 128, 256, and 512 bit vectors. Maybe extracting 128 from 256 is cheap, but maybe extracting 128 from 512 is not.

For x86 we do support extracting a quarter of a 512-bit register. But for i1 vectors we don't have isel patterns for extracting arbitrary pieces. So we need this to have a correct implementation of isExtractSubvectorCheap for mask vectors.

Reviewers: RKSimon, zvi, efriedma

Reviewed By: RKSimon

Subscribers: aemerson, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D36649
Change TypePath in RepositoryPath in Workspace
The file was modified/llvm/trunk/include/llvm/Target/TargetLowering.hllvm.src/include/llvm/Target/TargetLowering.h
The file was modified/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cppllvm.src/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
The file was modified/llvm/trunk/lib/Target/ARM/ARMISelLowering.cppllvm.src/lib/Target/ARM/ARMISelLowering.cpp
The file was modified/llvm/trunk/lib/Target/ARM/ARMISelLowering.hllvm.src/lib/Target/ARM/ARMISelLowering.h
The file was modified/llvm/trunk/lib/Target/X86/X86ISelLowering.cppllvm.src/lib/Target/X86/X86ISelLowering.cpp
The file was modified/llvm/trunk/lib/Target/X86/X86ISelLowering.hllvm.src/lib/Target/X86/X86ISelLowering.h