Pool inst worklists and hashsets to avoid rehashing. (#2982)

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/source/slang/slang-ir-legalize-types.cpp b/source/slang/slang-ir-legalize-types.cpp
index bf5893db7..55ed78a50 100644
--- a/source/slang/slang-ir-legalize-types.cpp
+++ b/source/slang/slang-ir-legalize-types.cpp
@@ -3472,7 +3472,7 @@ static constexpr int kHasBeenAddedScratchBitIndex = 1;
 
 struct IRTypeLegalizationPass
 {
-    IRTypeLegalizationContext* context;
+    IRTypeLegalizationContext* context = nullptr;
 
     // The goal of this pass is to ensure that legalization has been
     // applied to each instruction in a module. We also want to
@@ -3485,6 +3485,11 @@ struct IRTypeLegalizationPass
 
     List<IRInst*> workList;
 
+    IRTypeLegalizationPass()
+    {
+        workList.reserve(8192);
+    }
+
     bool hasBeenAddedOrProcessed(IRInst* inst)
     {
         if (!inst) return true;