From dfea1f6121293f7ddccc8a599ee4a70cf7a06ab7 Mon Sep 17 00:00:00 2001
From: Uros Bizjak <uros@kss-loka.si>
Date: Tue, 8 Nov 2005 07:21:51 +0100
Subject: [PATCH] re PR target/19340 (Compilation SEGFAULTs with -O1
 -fschedule-insns2 -fsched2-use-traces on an x86 architecture.)

	PR target/19340
	* reg-stack.c (reg_to_stack): Update register liveness also
	for flag_sched2_use_traces.

testsuite/

	PR target/19340
	* gcc.dg/pr19340.c: New test.

From-SVN: r106632
---
 gcc/ChangeLog                  |  6 ++++++
 gcc/reg-stack.c                |  2 +-
 gcc/testsuite/ChangeLog        |  7 ++++++-
 gcc/testsuite/gcc.dg/pr19340.c | 26 ++++++++++++++++++++++++++
 4 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 gcc/testsuite/gcc.dg/pr19340.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6e45b9e352e..1e22fd36845 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-11-08  Uros Bizjak  <uros@kss-loka.si>
+
+	PR target/19340
+	* reg-stack.c (reg_to_stack): Update register liveness also
+	for flag_sched2_use_traces.
+
 2005-11-08  Alan Modra  <amodra@bigpond.net.au>
 
 	PR target/23704
diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index 34e2dd9e33d..665311c2b6b 100644
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@@ -3046,7 +3046,7 @@ reg_to_stack (FILE *file)
      Also need to rebuild life when superblock scheduling is done
      as it don't update liveness yet.  */
   if (!optimize
-      || (flag_sched2_use_superblocks
+      || ((flag_sched2_use_superblocks || flag_sched2_use_traces)
 	  && flag_schedule_insns_after_reload))
     {
       count_or_remove_death_notes (NULL, 1);
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 9b09e7963d4..95040bc925a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2005-11-08  Uros Bizjak  <uros@kss-loka.si>
+
+	PR target/19340
+	* gcc.dg/pr19340.c: New test.
+
 2005-11-07  Ian Lance Taylor  <ian@airs.com>
 
 	PR rtl-optimization/24683
@@ -5,7 +10,7 @@
 
 2005-11-07  Uros Bizjak  <uros@kss-loka.si>
 
-	* gcc.dg/vect/pr24225.c: Add cleanup-coverage-files.
+	* gcc.dg/pr24225.c: Add cleanup-coverage-files.
 	* gcc.dg/vect/pr24300.c: Add cleanup-tree-dump.
 
 2005-11-07  Uros Bizjak  <uros@kss-loka.si>
diff --git a/gcc/testsuite/gcc.dg/pr19340.c b/gcc/testsuite/gcc.dg/pr19340.c
new file mode 100644
index 00000000000..cac4b0933ee
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr19340.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fschedule-insns2 -fsched2-use-traces" } */
+
+extern double f (double x);
+
+double g (int a)
+{
+  int b, c, d, e = 0;
+  double h;
+
+  for (d = 0; d < a; d++)
+    for (c = 0; c < a; c++)
+      b = 1;
+
+  h = (double) e / (double) a;
+
+  if (h)
+    {
+      h = 1.0 / h;
+      h = f (h);
+    }
+  else
+    h = 1.0;
+
+  return h;
+}