From: Uros Bizjak <uros@gcc.gnu.org>
Date: Tue, 7 Jun 2016 16:01:50 +0000 (+0200)
Subject: re PR target/71389 (ICE on trunk gcc on ivybridge target (df_refs_verify))
X-Git-Tag: releases/gcc-4.9.4~138
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff26074675a4fc03e55b7efb44e62925a50e3158;p=thirdparty%2Fgcc.git

re PR target/71389 (ICE on trunk gcc on ivybridge target (df_refs_verify))

	PR target/71389
	* config/i386/i386.c (ix86_avx256_split_vector_move_misalign):
	Copy op1 RTX to avoid invalid sharing.
	(ix86_expand_vector_move_misalign): Ditto.

testsuite/ChangeLog:

	PR target/71389
	* g++.dg/pr71389.C: New test.

From-SVN: r237179
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 49e0f89a75e2..108ac653d4fc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2016-06-07  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/71389
+	* config/i386/i386.c (ix86_avx256_split_vector_move_misalign):
+	Copy op1 RTX to avoid invalid sharing.
+	(ix86_expand_vector_move_misalign): Ditto.
+
 2016-06-05  Uros Bizjak  <ubizjak@gmail.com>
 
 	Backport from mainline
@@ -826,7 +833,7 @@
 
 	Backport from mainline
 	2015-11-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
-	            Bernd Schmidt  <bschmidt@redhat.com>
+		    Bernd Schmidt  <bschmidt@redhat.com>
 
 	PR rtl-optimization/67226
 	* calls.c (store_one_arg): Take into account
@@ -838,7 +845,7 @@
 
 	Backport from mainline
 	2015-11-24  Bernd Schmidt <bschmidt@redhat.com>
-	            Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+		    Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR rtl-optimization/68194
 	PR rtl-optimization/68328
@@ -1974,7 +1981,7 @@
 
 	Backport from mainline r222205
 	2015-04-17  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
-	            Jakub Jelinek  <jakub@redhat.com>
+		    Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/65787
 	* config/rs6000/rs6000.c (rtx_is_swappable_p): Ensure that a
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 20ad2cd0999d..733e3bdbdf49 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -17024,7 +17024,7 @@ ix86_avx256_split_vector_move_misalign (rtx op0, rtx op1)
 	  m = adjust_address (op0, mode, 0);
 	  emit_insn (extract (m, op1, const0_rtx));
 	  m = adjust_address (op0, mode, 16);
-	  emit_insn (extract (m, op1, const1_rtx));
+	  emit_insn (extract (m, copy_rtx (op1), const1_rtx));
 	}
       else
 	emit_insn (store_unaligned (op0, op1));
@@ -17332,7 +17332,7 @@ ix86_expand_vector_move_misalign (enum machine_mode mode, rtx operands[])
 	      m = adjust_address (op0, V2SFmode, 0);
 	      emit_insn (gen_sse_storelps (m, op1));
 	      m = adjust_address (op0, V2SFmode, 8);
-	      emit_insn (gen_sse_storehps (m, op1));
+	      emit_insn (gen_sse_storehps (m, copy_rtx (op1)));
 	    }
 	}
     }
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f896f6bf3fa9..9d0cb20f03b9 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-06-07  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/71389
+	* g++.dg/pr71389.C: New test.
+
 2016-05-26  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	Backport from trunk.
diff --git a/gcc/testsuite/g++.dg/pr71389.C b/gcc/testsuite/g++.dg/pr71389.C
new file mode 100644
index 000000000000..023abe1755cb
--- /dev/null
+++ b/gcc/testsuite/g++.dg/pr71389.C
@@ -0,0 +1,23 @@
+// { dg-do compile { target i?86-*-* x86_64-*-* } }
+// { dg-options "-std=c++11 -O3 -march=ivybridge" }
+
+#include <functional>
+
+extern int le_s6, le_s9, le_s11;
+long foo_v14[16][16];
+
+void fn1() {
+  std::array<std::array<int, 16>, 16> v13;
+  for (; le_s6;)
+    for (int k1 = 2; k1 < 4; k1 = k1 + 1) {
+      for (int n1 = 0; n1 < le_s9; n1 = 8) {
+        *foo_v14[6] = 20923310;
+        for (int i2 = n1; i2 < n1 + 8; i2 = i2 + 1)
+          v13.at(5).at(i2 + 6 - n1) = 306146921;
+      }
+
+      for (int l2 = 0; l2 < le_s11; l2 = l2 + 1)
+          *(l2 + v13.at(5).begin()) = 306146921;
+    }
+  v13.at(le_s6 - 4);
+}