RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-08 05:16:53 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

It is not possible to determie dominance between two PHI nodes

Browse Source 
based on their ordering.

llvm-svn: 35369
This commit is contained in:
Devang Patel 2007-03-26 23:18:28 +00:00
parent 3062ae001d
commit 58a8e74de6
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/VMCore/Dominators.cpp
View File

@ -19,6 +19,7 @@
#include "llvm/Assembly/Writer.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/SetOperations.h"
#include "llvm/Instructions.h"
#include <algorithm>
using namespace llvm;
@ -265,6 +266,11 @@ bool DominatorSetBase::dominates(Instruction *A, Instruction *B) const {
BasicBlock *BBA = A->getParent(), *BBB = B->getParent();
if (BBA != BBB) return dominates(BBA, BBB);
// It is not possible to determie dominance between two PHI nodes
// based on their ordering.
if (isa<PHINode>(A) && isa<PHINode>(B))
return false;
// Loop through the basic block until we find A or B.
BasicBlock::iterator I = BBA->begin();
for (; &*I != A && &*I != B; ++I) /*empty*/;