From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 30 Aug 2019 11:20:47 +0000 (+0200)
Subject: backport: re PR rtl-optimization/88416 (ICE in in df_uses_record, at df-scan.c:3013)
X-Git-Tag: releases/gcc-7.5.0~282
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4cdad636ddc67de92f841f23cd991f4a72c7ebd1;p=thirdparty%2Fgcc.git

backport: re PR rtl-optimization/88416 (ICE in in df_uses_record, at df-scan.c:3013)

	Backported from mainline
	2018-12-13  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/88416
	* valtrack.c (cleanup_auto_inc_dec): Handle pre/post-inc/dec/modify
	even if !AUTO_INC_DEC.

	* gcc.target/i386/pr88416.c: New test.

From-SVN: r275079
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 434031d876d0..ef7ec9bba374 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
 2019-08-30  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2018-12-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/88416
+	* valtrack.c (cleanup_auto_inc_dec): Handle pre/post-inc/dec/modify
+	even if !AUTO_INC_DEC.
+
 	2018-12-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/85593
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index de812b062a02..5e9a10d5d50c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,11 @@
 2019-08-30  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2018-12-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/88416
+	* gcc.target/i386/pr88416.c: New test.
+
 	2018-12-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/86669
diff --git a/gcc/testsuite/gcc.target/i386/pr88416.c b/gcc/testsuite/gcc.target/i386/pr88416.c
new file mode 100644
index 000000000000..3ab475929d7d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr88416.c
@@ -0,0 +1,5 @@
+/* PR rtl-optimization/88416 */
+/* { dg-do compile } */
+/* { dg-options "-O1 -fvar-tracking-assignments -fno-forward-propagate --param max-cse-insns=1" } */
+
+#include "writeeflags-1.c"
diff --git a/gcc/valtrack.c b/gcc/valtrack.c
index 9dcf135e167f..46b59519b3de 100644
--- a/gcc/valtrack.c
+++ b/gcc/valtrack.c
@@ -56,8 +56,6 @@ static rtx
 cleanup_auto_inc_dec (rtx src, machine_mode mem_mode ATTRIBUTE_UNUSED)
 {
   rtx x = src;
-  if (!AUTO_INC_DEC)
-    return copy_rtx (x);
 
   const RTX_CODE code = GET_CODE (x);
   int i;