RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 04:02:41 +01:00
Code Issues Projects Releases Wiki Activity

We need to make sure to remove PHI nodes in the successor that cannot be

Browse Source 
executed when removing branch dest.

llvm-svn: 101
This commit is contained in:
Chris Lattner 2001-06-29 05:23:10 +00:00
parent e445514d62
commit f5b28afa04
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Transforms/Scalar/ConstantProp.cpp
View File

@ -129,6 +129,14 @@ inline static bool ConstantFoldTerminator(TerminatorInst *T) {
// YES. Change to unconditional branch...
ConstPoolBool *Cond = (ConstPoolBool*)BI->getOperand(2);
Value *Destination = BI->getOperand(Cond->getValue() ? 0 : 1);
Value *OldDest = BI->getOperand(Cond->getValue() ? 1 : 0);
//cerr << "Method: " << T->getParent()->getParent() << "\nRemoving branch from " << T->getParent() << "\n\nTo: " << OldDest << endl;
// Let the basic block know that we are letting go of it. Based on this,
// it will adjust it's PHI nodes.
assert(T->getParent() && "Terminator not inserted in block!");
OldDest->castBasicBlockAsserting()->removePredecessor(T->getParent());
BI->setOperand(0, Destination); // Set the unconditional destination
BI->setOperand(1, 0); // Clear the conditional destination