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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-20 23:08:39 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-20 23:08:39 +0000 |
| commit | 09cd3036557304408334cdc4207eb17079d500db (patch) | |
| tree | b5dd62853c18175fb456064107e6ae8523b2a611 /clang/lib/Serialization/ASTWriterDecl.cpp | |
| parent | b85248da952ef5fc7773e46dd396d555bb2d6121 (diff) | |
| download | bcm5719-llvm-09cd3036557304408334cdc4207eb17079d500db.tar.gz bcm5719-llvm-09cd3036557304408334cdc4207eb17079d500db.zip | |
Extend -new-coalescer SSA update to handle mapped values as well.
The old-fashioned many-to-one value mapping doesn't always work when
merging vector lanes. A value can map to multiple different values, and
it can even be necessary to insert new PHIs.
When a value number is defined by a copy from a value number that
required SSa update, include the live range of the copied value number
in the SSA update as well. It is not necessarily a copy of the original
value number any longer.
llvm-svn: 164329
Diffstat (limited to 'clang/lib/Serialization/ASTWriterDecl.cpp')
0 files changed, 0 insertions, 0 deletions
