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Merge branch 'master' of github.com:KhronosGroup/glslang into clang-format

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This commit is contained in:
Dejan Mircevski 2016-03-26 15:57:28 -04:00
commit 5797975686
34 changed files with 934 additions and 150 deletions
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39
SPIRV/SpvBuilder.cpp
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@ -2234,6 +2234,45 @@ Id Builder::accessChainGetInferredType()
return type;
}
// comment in header
void Builder::eliminateDeadDecorations()
{
std::unordered_set<const Block*> reachable_blocks;
std::unordered_set<Id> unreachable_definitions;
// Collect IDs defined in unreachable blocks. For each function, label the
// reachable blocks first. Then for each unreachable block, collect the
// result IDs of the instructions in it.
for (std::vector<Function*>::const_iterator fi = module.getFunctions().cbegin();
fi != module.getFunctions().cend(); fi++)
{
Function* f = *fi;
Block* entry = f->getEntryBlock();
inReadableOrder(entry, [&reachable_blocks](const Block* b) { reachable_blocks.insert(b); });
for (std::vector<Block*>::const_iterator bi = f->getBlocks().cbegin();
bi != f->getBlocks().cend(); bi++)
{
Block* b = *bi;
if (!reachable_blocks.count(b))
{
for (std::vector<std::unique_ptr<Instruction> >::const_iterator ii =
b->getInstructions().cbegin();
ii != b->getInstructions().cend(); ii++)
{
Instruction* i = ii->get();
unreachable_definitions.insert(i->getResultId());
}
}
}
}
decorations.erase(std::remove_if(decorations.begin(), decorations.end(),
[&unreachable_definitions](std::unique_ptr<Instruction>& I) {
Instruction* inst = I.get();
Id decoration_id = inst->getIdOperand(0);
return unreachable_definitions.count(decoration_id) != 0;
}),
decorations.end());
}
void Builder::dump(std::vector<unsigned int>& out) const
{
// Header, before first instructions: