From 44bb541c011bcae84759ed194ec7cb4139775fcb Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 23 Aug 2003 22:54:34 +0000 Subject: [PATCH] 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 --- lib/Transforms/Utils/LowerSwitch.cpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/lib/Transforms/Utils/LowerSwitch.cpp b/lib/Transforms/Utils/LowerSwitch.cpp index c0e9e0dcd33..73ce2f77f92 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... -- 2.34.1