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(parent: b961ae2) | patch
Replace vfmaddxx213 instructions with their 231-type equivalents in accumulator
authorLang Hames <lhames@gmail.com>
Thu, 23 Jan 2014 20:23:36 +0000 (20:23 +0000)
committerLang Hames <lhames@gmail.com>
Thu, 23 Jan 2014 20:23:36 +0000 (20:23 +0000)
commitd8f4348cab0f6ac58d62746aceb822b7d615807e
treeb1ca34b0efd2481c1c27d79fdfcfa5d75dc866b0tree | snapshot
parentb961ae25b4a88aab861cb298c22b17c12a2e1225commit | diff
Replace vfmaddxx213 instructions with their 231-type equivalents in accumulator
loops. Writing back to the accumulator (231-type) allows the coalescer to
eliminate an extra copy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199933 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
lib/Target/X86/X86ISelLowering.h diff | blob | history
lib/Target/X86/X86InstrFMA.td diff | blob | history
test/CodeGen/X86/fma.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors