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Author SHA1 Message Date
Michael Kuperstein fe0d9bb6eb [X86] Disable mul -> shl + lea combine when compiling for minsize 
Differential Revision: http://reviews.llvm.org/D11904

llvm-svn: 244740
 2015-08-12 11:27:26 +00:00
Michael Kuperstein 951995821a [X86] Reduce some 32-bit imuls into lea + shl 
Reduce integer multiplication by a constant of the form k*2^c, where k is in {3,5,9} into a lea + shl. Previously it was only done for imulq on 64-bit platforms, but it makes sense for imull and 32-bit as well.

Differential Revision: http://reviews.llvm.org/D7196

llvm-svn: 227308
 2015-01-28 14:08:22 +00:00