From: Andy Ayers <andya@microsoft.com>
Date: Thu, 6 Aug 2020 19:01:01 +0000 (-0700)
Subject: JIT: Properly handle a switch opt case during early flow opts (#40434)
X-Git-Tag: submit/tizen/20210909.063632~6177
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=89788004d214b64b3e70542e24e3470621766bc2;p=platform%2Fupstream%2Fdotnet%2Fruntime.git

JIT: Properly handle a switch opt case during early flow opts (#40434)

Don't try rethreading statement lists if we're doing and early flow opt.

Fixes #40195.
---

diff --git a/src/coreclr/src/jit/flowgraph.cpp b/src/coreclr/src/jit/flowgraph.cpp
index 89ce176..242a4c5 100644
--- a/src/coreclr/src/jit/flowgraph.cpp
+++ b/src/coreclr/src/jit/flowgraph.cpp
@@ -14704,9 +14704,9 @@ bool Compiler::fgOptimizeSwitchBranches(BasicBlock* block)
             LIR::ReadOnlyRange range(zeroConstNode, switchTree);
             m_pLowering->LowerRange(block, range);
         }
-        else
+        else if (fgStmtListThreaded)
         {
-            // Re-link the nodes for this statement.
+            gtSetStmtInfo(switchStmt);
             fgSetStmtSeq(switchStmt);
         }