diff options
Diffstat (limited to 'lib/Transforms/IPO/ArgumentPromotion.cpp')
| -rw-r--r-- | lib/Transforms/IPO/ArgumentPromotion.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/IPO/ArgumentPromotion.cpp b/lib/Transforms/IPO/ArgumentPromotion.cpp index d8cf8d3f5da2..53223ab44316 100644 --- a/lib/Transforms/IPO/ArgumentPromotion.cpp +++ b/lib/Transforms/IPO/ArgumentPromotion.cpp @@ -124,6 +124,10 @@ doPromotion(Function *F, SmallPtrSetImpl<Argument *> &ArgsToPromote, } else if (I->use_empty()) { // Dead argument (which are always marked as promotable) ++NumArgumentsDead; + + // There may be remaining metadata uses of the argument for things like + // llvm.dbg.value. Replace them with undef. + I->replaceAllUsesWith(UndefValue::get(I->getType())); } else { // Okay, this is being promoted. This means that the only uses are loads // or GEPs which are only used by loads |