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| author | Chris Lattner <sabre@nondot.org> | 2009-01-31 08:40:03 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-01-31 08:40:03 +0000 |
| commit | d1b5e3fad94d4a5203c0a355aa7d37c01abaca8c (patch) | |
| tree | 6c9cf45f60d9f2c67525dae39f64548de1ba0eeb /test/CodeGen/X86/2009-01-31-BigShift2.ll | |
| parent | 4598c943c0bae941a96d882ed01f8dd2db4ef1e1 (diff) | |
| download | external_llvm-d1b5e3fad94d4a5203c0a355aa7d37c01abaca8c.zip external_llvm-d1b5e3fad94d4a5203c0a355aa7d37c01abaca8c.tar.gz external_llvm-d1b5e3fad94d4a5203c0a355aa7d37c01abaca8c.tar.bz2 | |
now that all the pieces are in place, teach instcombine's
simplifydemandedbits to simplify instructions with *multiple
uses* in contexts where it can get away with it. This allows
it to simplify the code in multi-use-or.ll into a single 'add
double'.
This change is particularly interesting because it will cover
up for some common codegen bugs with large integers created due
to the recent SROA patch. When working on fixing those bugs,
this should be disabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63481 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2009-01-31-BigShift2.ll')
0 files changed, 0 insertions, 0 deletions