diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Utils/LowerSwitch.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Transforms/Utils/LowerSwitch.cpp b/lib/Transforms/Utils/LowerSwitch.cpp index c0e9e0dcd3..73ce2f77f9 100644 --- a/lib/Transforms/Utils/LowerSwitch.cpp +++ b/lib/Transforms/Utils/LowerSwitch.cpp @@ -63,6 +63,13 @@ void LowerSwitch::processSwitchInst(SwitchInst *SI) { // Unlink the switch instruction from it's block. CurBlock->getInstList().remove(SI); + // If there is only the default destination, don't bother with the code below. + if (SI->getNumOperands() == 2) { + CurBlock->getInstList().push_back(new BranchInst(SI->getDefaultDest())); + delete SI; + return; + } + // Expand comparisons for all of the non-default cases... for (unsigned i = 2, e = SI->getNumOperands(); i != e; i += 2) { // Insert a new basic block after the current one... |