From 2cfeef883338978fa1ec18254b183fad4735f644 Mon Sep 17 00:00:00 2001
From: Jeff Law <law@redhat.com>
Date: Tue, 8 Feb 2011 11:54:12 -0700
Subject: [PATCH] re PR tree-optimization/42893 (Missed conditionally dead
store elimination)
PR tree-optimization/42893
* gcc.tree-ssa/pr42893.c: New test.
From-SVN: r169933
---
gcc/testsuite/ChangeLog | 5 +++++
gcc/testsuite/gcc.dg/tree-ssa/pr42893.c | 30 +++++++++++++++++++++++++
2 files changed, 35 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/pr42893.c
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8ceef886376c..5a4fb3dbe710 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-02-08 Jeff Law <law@redhat.com>
+
+ PR tree-optimization/42893
+ * gcc.tree-ssa/pr42893.c: New test.
+
2011-02-08 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/46834
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr42893.c b/gcc/testsuite/gcc.dg/tree-ssa/pr42893.c
new file mode 100644
index 000000000000..b3fbd7654037
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr42893.c
@@ -0,0 +1,30 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -fdump-tree-optimized" } */
+
+struct frame_info;
+void tui_registers_changed_hook (void);
+extern struct frame_info *deprecated_selected_frame;
+int tui_refreshing_registers = 0;
+void
+tui_registers_changed_hook (void)
+{
+ struct frame_info *fi;
+ fi = deprecated_selected_frame;
+ if (fi)
+
+ {
+ if (tui_refreshing_registers == 0)
+
+ {
+ tui_refreshing_registers = 1;
+ tui_refreshing_registers = 0;
+ }
+ }
+ return;
+}
+
+/* No references to tui_refreshing_registers should remain. */
+/* { dg-final { scan-tree-dump-not "tui_refreshing_registers" "optimized"} } */
+
+/* { dg-final { cleanup-tree-dump "optimized" } } */
+
--
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