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| author | Hal Finkel <hfinkel@anl.gov> | 2015-11-26 19:23:49 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2015-11-26 19:23:49 +0000 |
| commit | 28ad2b47dd109450ef910fdf477a2831f2f7947b (patch) | |
| tree | 3c10f35ddf2e71d24afb1a2ee572502b47473ceb /llvm/lib/Target/X86/X86ISelLowering.cpp | |
| parent | 8934577171b967cc23186c2ffa0a0c4b54a8d992 (diff) | |
| download | bcm5719-llvm-28ad2b47dd109450ef910fdf477a2831f2f7947b.tar.gz bcm5719-llvm-28ad2b47dd109450ef910fdf477a2831f2f7947b.zip | |
[bugpoint] Fix "Alias must point to a definition" problems
GlobalAliases may reference function definitions, but not function declarations.
bugpoint would sometimes create invalid IR by deleting a function's body (thus
mutating a function definition into a declaration) without first 'fixing' any
GlobalAliases that reference that function definition.
This change iteratively prevents that issue. Before deleting a function's body,
it scans the module for GlobalAliases which reference that function. When
found, it eliminates them using replaceAllUsesWith.
Fixes PR20788.
Patch by Nick Johnson!
llvm-svn: 254171
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
0 files changed, 0 insertions, 0 deletions
