maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

R600/SI: Check for empty stack in SIAnnotateControlFlow::isTopOfStack 

Fixes assertion failure in newly added lit test. Might just be a bandaid that
needs to be revisited.

llvm-svn: 175139
This commit is contained in:
Michel Danzer 2013-02-14 08:00:33 +00:00
parent 51d5eb2f63
commit ae0a403dab
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
llvm/lib/Target/R600/SIAnnotateControlFlow.cpp
View File

@ -147,7 +147,7 @@ bool SIAnnotateControlFlow::doInitialization(Module &M) {
/// \brief Is BB the last block saved on the stack ?
bool SIAnnotateControlFlow::isTopOfStack(BasicBlock *BB) {
return Stack.back().first == BB;
return !Stack.empty() && Stack.back().first == BB;
}
/// \brief Pop the last saved value from the control flow stack