3 Commits

Author SHA1 Message Date
Matt Arsenault
344c09202b IR: Fix BasicBlock::phis for empty blocks
llvm-svn: 321567
2017-12-29 19:25:53 +00:00
Daniel Jasper
9230610f0b Remove unnecessary double-assignment triggering -Wsequence-point.
llvm-svn: 303974
2017-05-26 12:07:12 +00:00
Chandler Carruth
8fa1e37342 [IR] Add an iterator and range accessor for the PHI nodes of a basic
block.

This allows writing much more natural and readable range based for loops
directly over the PHI nodes. It also takes advantage of the same tricks
for terminating the sequence as the hand coded versions.

I've replaced one example of this mostly to showcase the difference and
I've added a unit test to make sure the facilities really work the way
they're intended. I want to use this inside of SimpleLoopUnswitch but it
seems generally nice.

Differential Revision: https://reviews.llvm.org/D33533

llvm-svn: 303964
2017-05-26 03:10:00 +00:00