[llvm-commits] [llvm] r66000 - /llvm/trunk/lib/Transforms/Utils/BasicBlockUtils.cpp

[Dale Johannesen]

Author: johannes
Date: Tue Mar  3 20:06:53 2009
New Revision: 66000

URL: http://llvm.org/viewvc/llvm-project?rev=66000&view=rev
Log:
Skip ptr-to-ptr bitcasts when counting in another case.


Modified:
    llvm/trunk/lib/Transforms/Utils/BasicBlockUtils.cpp

Modified: llvm/trunk/lib/Transforms/Utils/BasicBlockUtils.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/BasicBlockUtils.cpp?rev=66000&r1=65999&r2=66000&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Utils/BasicBlockUtils.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/BasicBlockUtils.cpp Tue Mar  3 20:06:53 2009
@@ -477,10 +477,10 @@
     Instruction *Inst = --ScanFrom;
     if (isa<DbgInfoIntrinsic>(Inst))
       continue;
-    // Likewise, we skip bitcasts that feed into a llvm.dbg.declare; these are
-    // not present when debugging is off.
-    if (isa<BitCastInst>(Inst) && Inst->hasOneUse() &&
-        isa<DbgDeclareInst>(Inst->use_begin()))
+    // We skip pointer-to-pointer bitcasts, which are NOPs.
+    // It is necessary for correctness to skip those that feed into a
+    // llvm.dbg.declare, as these are not present when debugging is off.
+    if (isa<BitCastInst>(Inst) && isa<PointerType>(Inst->getType()))
       continue;
 
     // Restore ScanFrom to expected value in case next test succeeds