https://github.com/shader-slang/slang
Tip revision: e1b1ce3190682ce8af488028847852aba03f2845 authored by Tim Foley on 11 February 2021, 00:35:52 UTC
Fix a bug in IR lowering (#1701)
Fix a bug in IR lowering (#1701)
Tip revision: e1b1ce3
slang-ir-strip.cpp
// slang-ir-strip.cpp
#include "slang-ir-strip.h"
#include "slang-ir.h"
#include "slang-ir-insts.h"
namespace Slang {
/// Should `inst` be stripped, given the current `options`?
static bool _shouldStripInst(
IRInst* inst,
IRStripOptions const& options)
{
switch( inst->op )
{
default:
return false;
case kIROp_HighLevelDeclDecoration:
return true;
case kIROp_NameHintDecoration:
return options.shouldStripNameHints;
}
}
/// Recursively strip `inst` and its children according to `options`.
static void _stripFrontEndOnlyInstructionsRec(
IRInst* inst,
IRStripOptions const& options)
{
if( _shouldStripInst(inst, options) )
{
inst->removeAndDeallocate();
return;
}
if (options.stripSourceLocs)
{
inst->sourceLoc = SourceLoc();
}
IRInst* nextChild = nullptr;
for( IRInst* child = inst->getFirstDecorationOrChild(); child; child = nextChild )
{
nextChild = child->getNextInst();
_stripFrontEndOnlyInstructionsRec(child, options);
}
}
void stripFrontEndOnlyInstructions(
IRModule* module,
IRStripOptions const& options)
{
_stripFrontEndOnlyInstructionsRec(module->getModuleInst(), options);
}
}