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(parent: 2e2ef95) | patch
Handle canonical form of e.g.
authorEvan Cheng <evan.cheng@apple.com>
Wed, 5 Apr 2006 07:20:06 +0000 (07:20 +0000)
committerEvan Cheng <evan.cheng@apple.com>
Wed, 5 Apr 2006 07:20:06 +0000 (07:20 +0000)
commit1d5a8cca004c29d99526b3c327d948f8ab197c90
tree9c1c6953a5038c00446f903d21fc3bcab396d14btree | snapshot
parent2e2ef9535070bb352601482cceac1140c1158cddcommit | diff
Handle canonical form of e.g.
vector_shuffle v1, v1, <0, 4, 1, 5, 2, 6, 3, 7>

This is turned into
vector_shuffle v1, <undef>, <0, 0, 1, 1, 2, 2, 3, 3>
by dag combiner.

It would match a {p}unpckl on x86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27437 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
lib/Target/X86/X86ISelLowering.h diff | blob | history
lib/Target/X86/X86InstrSSE.td diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors