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Commit c3983c34 authored by Craig Topper's avatar Craig Topper
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[X86] Make sure we use FSUB instruction as the reference for operand order in... 

[X86] Make sure we use FSUB instruction as the reference for operand order in isAddSubOrSubAdd when recognizing subadd

The FADD part of the addsub/subadd pattern can have its operands commuted, but when checking for fsubadd we were using the fadd as reference and commuting the fsub node.

llvm-svn: 327660
parent 46502fa2
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