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Author SHA1 Message Date
Roger Ferrer Ibanez
d41059a9f6 [ARM] Materialise some boolean values to avoid a branch 
This patch combines some cases of ARMISD::CMOV for integers that arise in comparisons of the form

  a != b ? x : 0
  a == b ? 0 : x

and that currently (e.g. in Thumb1) are emitted as branches.

Differential Revision: https://reviews.llvm.org/D34515

llvm-svn: 325323
 2018-02-16 09:23:59 +00:00
Sam Parker
ccb209bb97 [ARM] Swap cmp operands for automatic shifts 
Swap the compare operands if the lhs is a shift and the rhs isn't,
as in arm and T2 the shift can be performed by the compare for its
second operand.

Differential Revision: https://reviews.llvm.org/D39004

llvm-svn: 316562
 2017-10-25 08:33:06 +00:00