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| author | Bob Wilson <bob.wilson@apple.com> | 2011-01-27 07:26:15 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2011-01-27 07:26:15 +0000 |
| commit | 2d69fb41846219f4da3026b41ad125020c04fa38 (patch) | |
| tree | 2c65c6e08e1ccb0a1fbb72b054c78b69faba7afb /clang/lib/Basic/FileManager.cpp | |
| parent | f9cbcc4cc2e2639c8437860f003e7b9426fe0b1d (diff) | |
| download | llvm-2d69fb41846219f4da3026b41ad125020c04fa38.zip llvm-2d69fb41846219f4da3026b41ad125020c04fa38.tar.gz llvm-2d69fb41846219f4da3026b41ad125020c04fa38.tar.bz2 | |
Avoid modifying the OneClassForEachPhysReg map while iterating over it.
Linear scan regalloc is currently assuming that any register aliased with
a member of a regclass must also be in at least one regclass. That is not
always true. For example, for X86, RIP is in a regclass but IP is not.
If you're unlucky, this can cause a crash by invalidating the iterator.
llvm-svn: 124365
Diffstat (limited to 'clang/lib/Basic/FileManager.cpp')
0 files changed, 0 insertions, 0 deletions