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(parent: 8bb3b09) | patch
X86: Add an SSE2 lowering for 64 bit compares when pcmpgtq (SSE4.2) isn't available.
authorBenjamin Kramer <benny.kra@googlemail.com>
Thu, 18 Apr 2013 21:37:45 +0000 (21:37 +0000)
committerBenjamin Kramer <benny.kra@googlemail.com>
Thu, 18 Apr 2013 21:37:45 +0000 (21:37 +0000)
commitfcba22decb8f44ff9aa8807f275ca3a32589fba0
tree7a9672c3b9c41ebcfa9a55d435852a02e71eb1b4tree | snapshot
parent8bb3b098b98cd62f074bb488d8294498ae8121e3commit | diff
X86: Add an SSE2 lowering for 64 bit compares when pcmpgtq (SSE4.2) isn't available.

This pattern started popping up in vectorized min/max reductions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179797 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
test/CodeGen/X86/vec_compare.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors