AuroraMiddleware/SPIRV-Cross
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Accept no ops

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This commit is contained in:
Loic Sharma 2023-01-09 18:14:37 -08:00
parent cded61dde3
commit d69a2cafe5
2 changed files with 35 additions and 1 deletions
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35
spirv_cross.cpp
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@ -1468,6 +1468,39 @@ bool Compiler::get_binary_offset_for_decoration(VariableID id, spv::Decoration d
return true;
}
bool Compiler::block_is_noop(const SPIRBlock &block) const
{
if (block.terminator != SPIRBlock::Direct)
return false;
// Verify all instructions have no semantic impact.
for (auto &i : block.ops)
{
auto op = static_cast<Op>(i.op);
switch (op)
{
// Non-Semantic instructions.
case OpNop:
case OpSourceContinued:
case OpSource:
case OpSourceExtension:
case OpName:
case OpMemberName:
case OpString:
case OpLine:
case OpNoLine:
case OpModuleProcessed:
break;
default:
return false;
}
}
return true;
}
bool Compiler::block_is_loop_candidate(const SPIRBlock &block, SPIRBlock::Method method) const
{
// Tried and failed.
@ -1525,7 +1558,7 @@ bool Compiler::block_is_loop_candidate(const SPIRBlock &block, SPIRBlock::Method
{
// Empty loop header that just sets up merge target
// and branches to loop body.
bool ret = block.terminator == SPIRBlock::Direct && block.merge == SPIRBlock::MergeLoop && block.ops.empty();
bool ret = block.terminator == SPIRBlock::Direct && block.merge == SPIRBlock::MergeLoop && block_is_noop(block);
if (!ret)
return false;

1
spirv_cross.hpp
View File

@ -752,6 +752,7 @@ protected:
bool is_force_recompile = false;
bool is_force_recompile_forward_progress = false;
bool block_is_noop(const SPIRBlock &block) const;
bool block_is_loop_candidate(const SPIRBlock &block, SPIRBlock::Method method) const;
bool types_are_logically_equivalent(const SPIRType &a, const SPIRType &b) const;