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Improve on r192635, ExeDepsFix for avx, and add a test case.
authorAndrew Trick <atrick@apple.com>
Tue, 15 Oct 2013 03:39:43 +0000 (03:39 +0000)
committerAndrew Trick <atrick@apple.com>
Tue, 15 Oct 2013 03:39:43 +0000 (03:39 +0000)
commit51dee24ca6ba63cf021d56ca9cbae62c739d5041
tree5ee39c0ca82e1099827441eada176b62d50a8e35tree | snapshot
parentcc3d76d98259ef82c9592022cb0e31fb42b36ab6commit | diff
Improve on r192635, ExeDepsFix for avx, and add a test case.

rdar:15221834 False AVX register dependencies cause 5x slowdown on
flops-5/6 and significant slowdown on several others.

This was blocking the switch to MI-Sched.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192669 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/ExecutionDepsFix.cpp diff | blob | history
test/CodeGen/X86/break-avx-dep.ll [new file with mode: 0644] blob
C/C++ LLVM-based compilers that forbids OOTA behaviors