From 4c9e4de4b68f2612a39e8783e9da89605ecf54e0 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Mon, 26 Jun 2023 15:18:06 -0700
Subject: Fix DCE on mutable calls in a loop. (#2943)

* Fix DCE on mutable calls in a loop.

* More accurate in-loop test.

* code review  fixes.

* Fix.

---------

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-ir-simplify-cfg.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'source/slang/slang-ir-simplify-cfg.cpp')

diff --git a/source/slang/slang-ir-simplify-cfg.cpp b/source/slang/slang-ir-simplify-cfg.cpp
index c37284dce..0c068bc66 100644
--- a/source/slang/slang-ir-simplify-cfg.cpp
+++ b/source/slang/slang-ir-simplify-cfg.cpp
@@ -742,6 +742,12 @@ static bool processFunc(IRGlobalValueWithCode* func)
         if (!blocksRemoved)
             break;
     }
+    if (changed)
+    {
+        auto module = func->getModule();
+        if (module)
+            module->invalidateAnalysisForInst(func);
+    }
     return changed;
 }
 
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