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Author SHA1 Message Date
Chad Rosier 90a2f9b110 Revert "[Reassociate] As the expression tree is rewritten make sure the operands are" 
This reverts commit r222142.  This is causing/exposing an execution-time regression
in spec2006/gcc and coremark on AArch64/A57/Ofast.

Conflicts:

	test/Transforms/Reassociate/optional-flags.ll

llvm-svn: 222398
 2014-11-19 23:21:20 +00:00
Chad Rosier bc0b869be9 [Reassociate] As the expression tree is rewritten make sure the operands are 
emitted in canonical form.

llvm-svn: 222142
 2014-11-17 16:33:50 +00:00
Chad Rosier ac6a2f532c [Reassociate] Don't reassociate when mixing regular and fast-math FP 
instructions.  Inlining might cause such cases and it's not valid to
reassociate floating-point instructions without the unsafe algebra flag.

Patch by Mehdi Amini <mehdi_amini@apple.com>!

llvm-svn: 221462
 2014-11-06 16:46:37 +00:00