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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/tools/bugpoint/BugDriver.h | |
| 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/tools/bugpoint/BugDriver.h')
| -rw-r--r-- | llvm/tools/bugpoint/BugDriver.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/tools/bugpoint/BugDriver.h b/llvm/tools/bugpoint/BugDriver.h index 1bd2e80a630..45fcf74aa6b 100644 --- a/llvm/tools/bugpoint/BugDriver.h +++ b/llvm/tools/bugpoint/BugDriver.h @@ -321,6 +321,11 @@ void PrintFunctionList(const std::vector<Function*> &Funcs); /// void PrintGlobalVariableList(const std::vector<GlobalVariable*> &GVs); +// DeleteGlobalInitializer - "Remove" the global variable by deleting its +// initializer, making it external. +// +void DeleteGlobalInitializer(GlobalVariable *GV); + // DeleteFunctionBody - "Remove" the function by deleting all of it's basic // blocks, making it external. // |
