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| author | Jiangning Liu <jiangning.liu@arm.com> | 2014-08-11 05:17:19 +0000 |
|---|---|---|
| committer | Jiangning Liu <jiangning.liu@arm.com> | 2014-08-11 05:17:19 +0000 |
| commit | dd6e12d71c6322c3265d34d88447e323501b20a5 (patch) | |
| tree | 7d9b4139f34f69fc0cfcc3cd40f9cbcd31c4d568 /clang/lib/CodeGen/CodeGenAction.cpp | |
| parent | 40b04fd9943857f5e17287ef517a92b59d69a0fe (diff) | |
| download | llvm-dd6e12d71c6322c3265d34d88447e323501b20a5.zip llvm-dd6e12d71c6322c3265d34d88447e323501b20a5.tar.gz llvm-dd6e12d71c6322c3265d34d88447e323501b20a5.tar.bz2 | |
In Machine CSE pass, the source register of a COPY machine instruction can
be propagated to all its users, and this propagation could increase the
probability of finding common subexpressions. If the COPY has only one user,
the COPY itself can be removed.
llvm-svn: 215344
Diffstat (limited to 'clang/lib/CodeGen/CodeGenAction.cpp')
0 files changed, 0 insertions, 0 deletions