[llvm-commits] [llvm] r67724 - /llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp
Dale Johannesen
dalej at apple.com
Wed Mar 25 18:15:07 PDT 2009
Author: johannes
Date: Wed Mar 25 20:15:07 2009
New Revision: 67724
URL: http://llvm.org/viewvc/llvm-project?rev=67724&view=rev
Log:
Skip debug info one more place. (This one gets
called from llc, not opt, but it's an IR level
optimization nevertheless.)
Modified:
llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp
Modified: llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp?rev=67724&r1=67723&r2=67724&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp Wed Mar 25 20:15:07 2009
@@ -20,6 +20,7 @@
#include "llvm/Function.h"
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
#include "llvm/Pass.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetData.h"
@@ -350,15 +351,20 @@
BasicBlock *Pred = *PI;
// To be usable, the pred has to end with an uncond branch to the dest.
BranchInst *PredBr = dyn_cast<BranchInst>(Pred->getTerminator());
- if (!PredBr || !PredBr->isUnconditional() ||
- // Must be empty other than the branch.
- &Pred->front() != PredBr ||
- // Cannot be the entry block; its label does not get emitted.
- Pred == &(Dest->getParent()->getEntryBlock()))
+ if (!PredBr || !PredBr->isUnconditional())
+ continue;
+ // Must be empty other than the branch and debug info.
+ BasicBlock::iterator I = Pred->begin();
+ while (isa<DbgInfoIntrinsic>(I))
+ I++;
+ if (dyn_cast<Instruction>(I) != PredBr)
+ continue;
+ // Cannot be the entry block; its label does not get emitted.
+ if (Pred == &(Dest->getParent()->getEntryBlock()))
continue;
// Finally, since we know that Dest has phi nodes in it, we have to make
- // sure that jumping to Pred will have the same affect as going to Dest in
+ // sure that jumping to Pred will have the same effect as going to Dest in
// terms of PHI values.
PHINode *PN;
unsigned PHINo = 0;
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