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Commit Graph

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

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

2 Commits