llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-15 23:31:37 +00:00

History

Hal Finkel 9af7014019 Manually remove successors in if conversion when CopyAndPredicateBlock is used

In the simple and triangle if-conversion cases, when CopyAndPredicateBlock is
used because the to-be-predicated block has other predecessors, we need to
explicitly remove the old copied block from the successors list. Normally if
conversion relies on TII->AnalyzeBranch combined with BB->CorrectExtraCFGEdges
to cleanup the successors list, but if the predicated block contained an
un-analyzable branch (such as a now-predicated return), then this will fail.

These extra successors were causing a problem on PPC because it was causing
later passes (such as PPCEarlyReturm) to leave dead return-only basic blocks in
the code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179227 91177308-0d34-0410-b5e6-96231b3b80d8

2013-04-10 22:05:25 +00:00

AArch64

AArch64: remove barriers from AArch64 atomic operations.

2013-04-08 08:40:41 +00:00

ARM

DAGCombiner: Fold a shuffle on CONCAT_VECTORS into a new CONCAT_VECTORS if possible.

2013-04-09 17:41:43 +00:00

CPP

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Generic

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Hexagon