RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-01-28 23:52:54 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll

Browse Source 
llvm-svn: 31315
This commit is contained in:
Chris Lattner 2006-10-31 17:52:18 +00:00
parent 0e320bc90e
commit 79daf6ae80
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/Transforms/Utils/LCSSA.cpp
View File

@ -184,7 +184,14 @@ void LCSSA::ProcessInstruction(Instruction *Instr,
// Otherwise, patch up uses of the value with the appropriate LCSSA Phi,
// inserting PHI nodes into join points where needed.
Value *Val = GetValueForBlock(DT->getNode(UserBB), Instr, Phis);
DominatorTree::Node *UserBBNode = DT->getNode(UserBB);
// If the block has no dominator info, it is unreachable.
Value *Val;
if (UserBBNode)
Val = GetValueForBlock(UserBBNode, Instr, Phis);
else
Val = UndefValue::get(Instr->getType());
// Preincrement the iterator to avoid invalidating it when we change the
// value.