diff options
Diffstat (limited to 'lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | lib/Transforms/Utils/Local.cpp | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp index 4bca2fc1fb..5af8c8b193 100644 --- a/lib/Transforms/Utils/Local.cpp +++ b/lib/Transforms/Utils/Local.cpp @@ -785,10 +785,19 @@ bool llvm::ConvertDebugDeclareToDebugValue(DbgDeclareInst *DDI, if (!DIVar.Verify()) return false; - Instruction *DbgVal = - Builder.insertDbgValueIntrinsic(SI->getOperand(0), 0, - DIVar, SI); - + Instruction *DbgVal = NULL; + // If an argument is zero extended then use argument directly. The ZExt + // may be zapped by an optimization pass in future. + Argument *ExtendedArg = NULL; + if (ZExtInst *ZExt = dyn_cast<ZExtInst>(SI->getOperand(0))) + ExtendedArg = dyn_cast<Argument>(ZExt->getOperand(0)); + if (SExtInst *SExt = dyn_cast<SExtInst>(SI->getOperand(0))) + ExtendedArg = dyn_cast<Argument>(SExt->getOperand(0)); + if (ExtendedArg) + DbgVal = Builder.insertDbgValueIntrinsic(ExtendedArg, 0, DIVar, SI); + else + DbgVal = Builder.insertDbgValueIntrinsic(SI->getOperand(0), 0, DIVar, SI); + // Propagate any debug metadata from the store onto the dbg.value. DebugLoc SIDL = SI->getDebugLoc(); if (!SIDL.isUnknown()) |