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PR1255 (case ranges: work with ConstantRangesSet instead of ConstantInt) related changes for Execution and Verifier.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157183 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Stepan Dyatkovskiy
2012-05-21 10:44:40 +00:00
parent 8ae97baef2
commit 1c8f4b8c34
3 changed files with 37 additions and 12 deletions
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14
lib/ExecutionEngine/Interpreter/Execution.cpp
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@ -651,10 +651,16 @@ void Interpreter::visitSwitchInst(SwitchInst &I) {
// Check to see if any of the cases match...
BasicBlock *Dest = 0;
for (SwitchInst::CaseIt i = I.case_begin(), e = I.case_end(); i != e; ++i) {
GenericValue CaseVal = getOperandValue(i.getCaseValue(), SF);
if (executeICMP_EQ(CondVal, CaseVal, ElTy).IntVal != 0) {
Dest = cast<BasicBlock>(i.getCaseSuccessor());
break;
ConstantRangesSet Case = i.getCaseValueEx();
for (unsigned n = 0, en = Case.getNumItems(); n != en; ++n) {
ConstantRangesSet::Range r = Case.getItem(n);
GenericValue Low = getOperandValue(r.Low, SF);
GenericValue High = getOperandValue(r.High, SF);
if (executeICMP_ULE(Low, CondVal, ElTy).IntVal != 0 &&
executeICMP_ULE(CondVal, High, ElTy).IntVal != 0) {
Dest = cast<BasicBlock>(i.getCaseSuccessor());
break;
}
}
}
if (!Dest) Dest = I.getDefaultDest(); // No cases matched: use default