AuroraMiddleware/SPIRV-Cross
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Use the existing loop dominator when doing loop variable preservation.

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This commit is contained in:
Hans-Kristian Arntzen 2019-06-06 12:22:28 +02:00
parent bf56dc88b9
commit 02ae99f399
1 changed files with 4 additions and 4 deletions
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8
spirv_cross.cpp
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@ -3361,13 +3361,13 @@ void Compiler::analyze_variable_scope(SPIRFunction &entry, AnalyzeVariableScopeA
auto &variable = get<SPIRVariable>(var.first);
if (!variable.phi_variable)
{
bool preserve = may_read_undefined_variable_in_block(get<SPIRBlock>(dominating_block), var.first);
auto &block = get<SPIRBlock>(dominating_block);
bool preserve = may_read_undefined_variable_in_block(block, var.first);
if (preserve)
{
uint32_t loop_dominator = cfg.find_loop_dominator(dominating_block);
if (loop_dominator != SPIRBlock::NoDominator)
if (block.loop_dominator != SPIRBlock::NoDominator)
{
builder.add_block(loop_dominator);
builder.add_block(block.loop_dominator);
dominating_block = builder.get_dominator();
}
}