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| author | Chris Lattner <sabre@nondot.org> | 2003-08-23 22:54:34 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2003-08-23 22:54:34 +0000 |
| commit | 44bb541c011bcae84759ed194ec7cb4139775fcb (patch) | |
| tree | 526a54ce90310936949ff477b6c1ea387d62bde1 /lib | |
| parent | 4d34adad6778ac232c8bf0a9d41cd5c20faed153 (diff) | |
| download | llvm-44bb541c011bcae84759ed194ec7cb4139775fcb.tar.gz llvm-44bb541c011bcae84759ed194ec7cb4139775fcb.tar.bz2 llvm-44bb541c011bcae84759ed194ec7cb4139775fcb.tar.xz | |
Fix bug: LowerSwitch/2003-08-23-EmptySwitch.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8087 91177308-0d34-0410-b5e6-96231b3b80d8
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... |