From 27d5f5c237910bc3d2df62367d2e0a83c1132885 Mon Sep 17 00:00:00 2001
From: Denghui Dong <ddong@openjdk.org>
Date: Thu, 4 Jan 2024 13:11:47 +0000
Subject: [PATCH] 8322781: C1: Debug build crash in GraphBuilder::vmap() when
 print stats

Reviewed-by: kvn, thartmann, shade
---
 src/hotspot/share/c1/c1_GraphBuilder.cpp              |  4 +++-
 .../jtreg/compiler/arguments/TestC1Globals.java       | 11 +++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/hotspot/share/c1/c1_GraphBuilder.cpp b/src/hotspot/share/c1/c1_GraphBuilder.cpp
index edf6f29478c..fb2aa28ec86 100644
--- a/src/hotspot/share/c1/c1_GraphBuilder.cpp
+++ b/src/hotspot/share/c1/c1_GraphBuilder.cpp
@@ -4468,7 +4468,9 @@ void GraphBuilder::append_unsafe_get_and_set(ciMethod* callee, bool is_add) {
 
 #ifndef PRODUCT
 void GraphBuilder::print_stats() {
-  vmap()->print();
+  if (UseLocalValueNumbering) {
+    vmap()->print();
+  }
 }
 #endif // PRODUCT
 
diff --git a/test/hotspot/jtreg/compiler/arguments/TestC1Globals.java b/test/hotspot/jtreg/compiler/arguments/TestC1Globals.java
index ff639a69bd9..3944b78bc27 100644
--- a/test/hotspot/jtreg/compiler/arguments/TestC1Globals.java
+++ b/test/hotspot/jtreg/compiler/arguments/TestC1Globals.java
@@ -57,6 +57,17 @@
  *
  */
 
+/**
+ * @test
+ * @bug 8322781
+ * @requires vm.debug
+ * @summary Test flag with c1 value numbering
+ *
+ * @run main/othervm -XX:+PrintValueNumbering -XX:+Verbose -XX:-UseLocalValueNumbering
+ *                   -Xcomp -XX:TieredStopAtLevel=1
+ *                   compiler.arguments.TestC1Globals
+ */
+
 package compiler.arguments;
 
 public class TestC1Globals {