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Fix PR3807 by inserting 'insertelement' instructions in the normal dest of

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an invoke instead of after the invoke (in its block), which is invalid.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67139 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-03-18 00:31:45 +00:00
parent 64ec298e68
commit bda0765e07
2 changed files with 25 additions and 5 deletions
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lib/Transforms/IPO/DeadArgumentElimination.cpp
+10 -5
View File
@@ -798,9 +798,13 @@ bool DAE::RemoveDeadStuffFromFunction(Function *F) {
// Replace by null for now.
Call->replaceAllUsesWith(Constant::getNullValue(Call->getType()));
} else {
assert(isa<StructType>(RetTy) && "Return type changed, but not into a"
"void. The old return type must have"
"been a struct!");
assert(isa<StructType>(RetTy) &&
"Return type changed, but not into a void. The old return type"
" must have been a struct!");
Instruction *InsertPt = Call;
if (InvokeInst *II = dyn_cast<InvokeInst>(Call))
InsertPt = II->getNormalDest()->begin();
// We used to return a struct. Instead of doing smart stuff with all the
// uses of this struct, we will just rebuild it using
// extract/insertvalue chaining and let instcombine clean that up.
@@ -813,12 +817,13 @@ bool DAE::RemoveDeadStuffFromFunction(Function *F) {
if (RetTypes.size() > 1)
// We are still returning a struct, so extract the value from our
// return value
V = ExtractValueInst::Create(New, NewRetIdxs[i], "newret", Call);
V = ExtractValueInst::Create(New, NewRetIdxs[i], "newret",
InsertPt);
else
// We are now returning a single element, so just insert that
V = New;
// Insert the value at the old position
RetVal = InsertValueInst::Create(RetVal, V, i, "oldret", Call);
RetVal = InsertValueInst::Create(RetVal, V, i, "oldret", InsertPt);
}
// Now, replace all uses of the old call instruction with the return
// struct we built