Metal: add RelaxedtoHalfPass for improved ALU performance (#5504)

2022-05-04 11:13:28 -07:00
parent ebd5f150c1
commit efec4e1adc
4 changed files with 11 additions and 0 deletions
@@ -441,6 +441,13 @@ std::shared_ptr<spvtools::Optimizer> GLSLPostProcessor::createOptimizer(
        registerSizePasses(*optimizer, config);
    } else if (optimization == MaterialBuilder::Optimization::PERFORMANCE) {
        registerPerformancePasses(*optimizer, config);
+        // Metal doesn't support relaxed precision, but does have support for float16 math operations.
+        if (config.targetApi == MaterialBuilder::TargetApi::METAL) {
+            optimizer->RegisterPass(CreateConvertRelaxedToHalfPass());
+            optimizer->RegisterPass(CreateSimplificationPass());
+            optimizer->RegisterPass(CreateRedundancyEliminationPass());
+            optimizer->RegisterPass(CreateAggressiveDCEPass());
+        }
    }

    return optimizer;