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Fix Regression/Transforms/Inline/2004-10-17-InlineFunctionWithoutReturn.ll

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If a function had no return instruction in it, and the result of the inlined
call instruction was used, we would crash.

llvm-svn: 17104
This commit is contained in:
Chris Lattner 2004-10-17 23:21:07 +00:00
parent 062914f153
commit 9e7ddf8596
1 changed files with 8 additions and 4 deletions
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12
lib/Transforms/Utils/InlineFunction.cpp
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@ -16,7 +16,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Utils/Cloning.h"
#include "llvm/Constant.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/Instructions.h"
@ -316,12 +316,16 @@ bool llvm::InlineFunction(CallSite CS) {
ReturnBB->replaceAllUsesWith(AfterCallBB);
// Delete the return instruction now and empty ReturnBB now.
Returns[0]->getParent()->getInstList().erase(Returns[0]);
Caller->getBasicBlockList().erase(ReturnBB);
Returns[0]->eraseFromParent();
ReturnBB->eraseFromParent();
} else if (!TheCall->use_empty()) {
// No returns, but something is using the return value of the call. Just
// nuke the result.
TheCall->replaceAllUsesWith(UndefValue::get(TheCall->getType()));
}
// Since we are now done with the Call/Invoke, we can delete it.
TheCall->getParent()->getInstList().erase(TheCall);
TheCall->eraseFromParent();
// We should always be able to fold the entry block of the function into the
// single predecessor of the block...