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Call addPredecessor() on OpSwitch blocks.

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This commit is contained in:
Dejan Mircevski 2016-01-18 16:18:01 -05:00
parent 5fe789b4af
commit 454796e008
1 changed files with 4 additions and 1 deletions
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5
SPIRV/SpvBuilder.cpp
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@ -1759,10 +1759,13 @@ void Builder::makeSwitch(Id selector, int numSegments, std::vector<int>& caseVal
// make the switch instruction
Instruction* switchInst = new Instruction(NoResult, NoType, OpSwitch);
switchInst->addIdOperand(selector);
switchInst->addIdOperand(defaultSegment >= 0 ? segmentBlocks[defaultSegment]->getId() : mergeBlock->getId());
auto defaultOrMerge = (defaultSegment >= 0) ? segmentBlocks[defaultSegment] : mergeBlock;
switchInst->addIdOperand(defaultOrMerge->getId());
defaultOrMerge->addPredecessor(buildPoint);
for (int i = 0; i < (int)caseValues.size(); ++i) {
switchInst->addImmediateOperand(caseValues[i]);
switchInst->addIdOperand(segmentBlocks[valueIndexToSegment[i]]->getId());
segmentBlocks[valueIndexToSegment[i]]->addPredecessor(buildPoint);
}
buildPoint->addInstruction(std::unique_ptr<Instruction>(switchInst));