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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-11 18:25:10 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-11 18:25:10 +0000 |
| commit | 443443cc8399d6753cac828516ea27531e296769 (patch) | |
| tree | e8669a8989b387960be3c07d97791365c010b9f8 /lib/CodeGen/VirtRegRewriter.cpp | |
| parent | e8b9f16a4c2db968db9d3d147b95ab1293d3383c (diff) | |
| download | external_llvm-443443cc8399d6753cac828516ea27531e296769.zip external_llvm-443443cc8399d6753cac828516ea27531e296769.tar.gz external_llvm-443443cc8399d6753cac828516ea27531e296769.tar.bz2 | |
Avoid hoisting spills when looking at a copy from another register that is also
about to be spilled.
This can only happen when two extra snippet registers are included in the spill,
and there is a copy between them. Hoisting the spill creates problems because
the hoist will mark the copy for later dead code elimination, and spilling the
second register will turn the copy into a spill.
<rdar://problem/9420853>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131192 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/VirtRegRewriter.cpp')
0 files changed, 0 insertions, 0 deletions