Nuno Lopes 9969458b16 teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users. ...

This means we can do cheap DSE for heap memory.
Nothing is done if the pointer excapes or has a load.

The churn in the tests is mostly due to objectsize, since we want to make sure we
don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159876 91177308-0d34-0410-b5e6-96231b3b80d8

2012-07-06 23:09:25 +00:00

..

Hello

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InstCombine

teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users.

2012-07-06 23:09:25 +00:00

Instrumentation

[tsan] fix compile-time falilure found while building Chromium with tsan (tsan issue #3). A unit test will follow separately.

2012-07-05 09:07:31 +00:00

IPO

GlobalOpt forgot to handle bitcast when analyzing globals. Found by inspection.

2012-07-02 18:55:39 +00:00

Scalar

BoundsChecking: optimize out the check for offset < 0 if size is known to be >= 0 (signed).

2012-07-03 17:30:18 +00:00

Utils

Reverted r156659, due to probable performance regressions, DenseMap should be used here:

2012-07-04 05:53:05 +00:00

Vectorize

Precompute SCEV pointer analysis prior to instruction fusion in BBVectorize.

2012-06-28 05:42:45 +00:00

CMakeLists.txt

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LLVMBuild.txt

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Makefile

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