llvm-6502

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History

Benjamin Kramer f4eeab452a DAGCombiner: Don't drop extension behavior when shrinking a load when unsafe.

ReduceLoadWidth unconditionally drops extensions from loads. Limit it to the
case when all of the bits the extension would otherwise produce are dropped by
the shrink. It would be possible to shrink the load in more cases by merging
the extensions, but this isn't trivial and a very rare case. I left a TODO for
that case.

Fixes PR16551.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185755 91177308-0d34-0410-b5e6-96231b3b80d8

2013-07-06 14:05:09 +00:00

Analysis

isKnownToBeAPowerOfTwo: Fix a typo in a comment

2013-07-06 02:24:59 +00:00

AsmParser

Extend 'readonly' and 'readnone' to work on function arguments as well as

2013-07-06 00:29:58 +00:00

Bitcode

…

CodeGen

DAGCombiner: Don't drop extension behavior when shrinking a load when unsafe.

2013-07-06 14:05:09 +00:00