llvm-project

History

Benjamin Kramer afdfdb5cff LoopRotate: Also rotate loops with multiple exits.

The old PHI updating code in loop-rotate was replaced with SSAUpdater a while
ago, it has no problems with comples PHIs. What had to be fixed is detecting
whether a loop was already rotated and updating dominators when multiple exits
were present.

This change increases overall code size a bit, mostly due to additional loop
unrolling opportunities. Passes test-suite and selfhost with -verify-dom-info.
Fixes PR7447.

Thanks to Andy for the input on the domtree updating code.

llvm-svn: 162912

2012-08-30 15:39:42 +00:00

2009-01-25-SingleEntryPhi.ll

…

alloca.ll

loop-rotate shouldn't hoist alloca instructions out of a loop. Patch by Patrik Hägglund, with slightly modified test. Issue reported by Patrik Hägglund on llvmdev.

2012-02-16 00:41:10 +00:00

basic.ll

Teach loop rotate to hoist trivially invariant instructions

2010-09-06 01:10:22 +00:00

crash.ll

remove asmparser support for the old getresult instruction, which has been subsumed by extractvalue.

2011-06-17 06:57:15 +00:00