6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-13 04:38:24 +00:00
Code Issues Projects Releases Wiki Activity

Fix bug: test/Regression/Other/2002-03-11-ConstPropCrash.ll

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-03-11 22:11:07 +00:00
parent 81ba70445f
commit 0fce76a009
3 changed files with 9 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
lib/Transforms/Scalar/ConstantProp.cpp
View File

@ -102,7 +102,8 @@ ConstantFoldBinaryInst(BasicBlock *BB, BasicBlock::iterator &II,
// constant value, convert it into an unconditional branch to the constant
// destination.
//
bool ConstantFoldTerminator(TerminatorInst *T) {
bool ConstantFoldTerminator(BasicBlock *BB, BasicBlock::iterator &II,
TerminatorInst *T) {
// Branch - See if we are conditional jumping on constant
if (BranchInst *BI = dyn_cast<BranchInst>(T)) {
if (BI->isUnconditional()) return false; // Can't optimize uncond branch
@ -127,6 +128,7 @@ bool ConstantFoldTerminator(TerminatorInst *T) {
// Set the unconditional destination, and change the insn to be an
// unconditional branch.
BI->setUnconditionalDest(Destination);
II = BB->end()-1; // Update instruction iterator!
return true;
}
#if 0
@ -171,7 +173,7 @@ bool doConstantPropogation(BasicBlock *BB, BasicBlock::iterator &II) {
Constant *D = dyn_cast<Constant>(UInst->getOperand(0));
if (D) return ConstantFoldUnaryInst(BB, II, UInst, D);
} else if (TerminatorInst *TInst = dyn_cast<TerminatorInst>(Inst)) {
return ConstantFoldTerminator(TInst);
return ConstantFoldTerminator(BB, II, TInst);
} else if (PHINode *PN = dyn_cast<PHINode>(Inst)) {
// If it's a PHI node and only has one operand