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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-30 18:14:07 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-30 18:14:07 +0000 |
| commit | efe65ce25c2f475ef7a9ea767660b029310e503a (patch) | |
| tree | 198998e31ee4e7a3e3155f0873e03f0c130acc4b /lib/Support/StringMap.cpp | |
| parent | eb1c5dcb120faade429f859e0aa9f6fcda1755a0 (diff) | |
Fix evil VirtRegRewriter bug.
The rewriter can keep track of multiple stack slots in the same register if they
happen to have the same value. When an instruction modifies a stack slot by
defining a register that is mapped to a stack slot, other stack slots in that
register are no longer valid.
This is a very rare problem, and I don't have a simple test case. I get the
impression that VirtRegRewriter knows it is about to be deleted, inventing a
last opaque problem.
<rdar://problem/9204040>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128562 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/StringMap.cpp')
0 files changed, 0 insertions, 0 deletions