Add Insert-extract elimination back into legalization passes.

Fixes #1326.

diff --git a/source/opt/optimizer.cpp b/source/opt/optimizer.cpp
index e697e43..fa2c767 100644 (file)
--- a/source/opt/optimizer.cpp
+++ b/source/opt/optimizer.cpp
@@ -109,6 +109,7 @@ Optimizer& Optimizer::RegisterLegalizationPasses() {
           // Copy propagate members.  Cleans up code sequences generated by
           // scalar replacement.  Also important for removing OpPhi nodes.
           .RegisterPass(CreateSimplificationPass())
+          .RegisterPass(CreateInsertExtractElimPass())
           // May need loop unrolling here see
           // https://github.com/Microsoft/DirectXShaderCompiler/pull/930
           // Get rid of unused code that contain traces of illegal code