#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
#include "llvm/Pass.h"
#include "llvm/Type.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
// jump directly to the destination instead of going through this block.
void CondProp::SimplifyPredecessors(BranchInst *BI) {
// TODO: We currently only handle the most trival case, where the PHI node has
- // one use (the branch), and is the only instruction besides the branch in the
- // block.
+ // one use (the branch), and is the only instruction besides the branch and dbg
+ // intrinsics in the block.
PHINode *PN = cast<PHINode>(BI->getCondition());
if (PN->getNumIncomingValues() == 1) {
if (!PN->hasOneUse()) return;
BasicBlock *BB = BI->getParent();
- if (!isTerminatorFirstRelevantInsn (BB, BI))
+ if (&*BB->begin() != PN)
+ return;
+ BasicBlock::iterator BBI = BB->begin();
+ BasicBlock::iterator BBE = BB->end();
+ while (BBI != BBE && isa<DbgInfoIntrinsic>(++BBI)) ;
+ if (&*BBI != BI)
return;
// Ok, we have this really simple case, walk the PHI operands, looking for
// the destination instead of going through this block.
void CondProp::SimplifyPredecessors(SwitchInst *SI) {
// TODO: We currently only handle the most trival case, where the PHI node has
- // one use (the branch), and is the only instruction besides the branch in the
- // block.
+ // one use (the branch), and is the only instruction besides the branch and
+ // dbg intrinsics in the block.
PHINode *PN = cast<PHINode>(SI->getCondition());
if (!PN->hasOneUse()) return;
BasicBlock *BB = SI->getParent();
- if (!isTerminatorFirstRelevantInsn (BB, SI))
+ if (&*BB->begin() != PN)
+ return;
+ BasicBlock::iterator BBI = BB->begin();
+ BasicBlock::iterator BBE = BB->end();
+ while (BBI != BBE && isa<DbgInfoIntrinsic>(++BBI)) ;
+ if (&*BBI != SI)
return;
bool RemovedPreds = false;