From: Uros Bizjak <ubizjak@gmail.com>
Date: Wed, 15 Mar 2017 16:15:53 +0000 (+0100)
Subject: re PR target/80019 (ICE in ix86_vector_duplicate_value, at config/i386/i386.c:42584)
X-Git-Tag: releases/gcc-5.5.0~470
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92f990269f0b7bde62555c1c9555e73dfb29eb99;p=thirdparty%2Fgcc.git

re PR target/80019 (ICE in ix86_vector_duplicate_value, at config/i386/i386.c:42584)

	PR target/80019
	* config/i386/i386.c (ix86_vector_duplicate_value): Create
	subreg of inner mode for values already in registers.

testsuite/ChangeLog:

	PR target/80019
	* gcc.target/i386/pr80019.c: New test.

From-SVN: r246168
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e7c87c4b9d02..da65dbb3ad42 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-03-15  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/80019
+	* config/i386/i386.c (ix86_vector_duplicate_value): Create
+	subreg of inner mode for values already in registers.
+
 2017-03-10  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	Back port from trunk
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index cee8a00767c1..f878a79b9240 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -43989,10 +43989,16 @@ ix86_vector_duplicate_value (machine_mode mode, rtx target, rtx val)
   if (recog_memoized (insn) < 0)
     {
       rtx_insn *seq;
+      machine_mode innermode = GET_MODE_INNER (mode);
+      rtx reg;
+
       /* If that fails, force VAL into a register.  */
 
       start_sequence ();
-      XEXP (dup, 0) = force_reg (GET_MODE_INNER (mode), val);
+      reg = force_reg (innermode, val);
+      if (GET_MODE (reg) != innermode)
+	reg = gen_lowpart (innermode, reg);
+      XEXP (dup, 0) = reg;
       seq = get_insns ();
       end_sequence ();
       if (seq)
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 684c841f073e..df9080c37876 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-03-15  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/80019
+	* gcc.target/i386/pr80019.c: New test.
+
 2017-03-10  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	Back port from trunk
diff --git a/gcc/testsuite/gcc.target/i386/pr80019.c b/gcc/testsuite/gcc.target/i386/pr80019.c
new file mode 100644
index 000000000000..35ec9608a80c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr80019.c
@@ -0,0 +1,13 @@
+/* PR target/80019 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -mxop -mavx2" } */
+
+typedef char v16qi __attribute__ ((vector_size (16)));
+
+extern v16qi b, c;
+
+void
+foo (int e)
+{
+  b = c << e;
+}