From: Richard Sandiford <richard.sandiford@arm.com>
Date: Mon, 22 Sep 2014 07:38:46 +0000 (+0000)
Subject: i386.c (ix86_cannot_change_mode_class): Remove GET_MODE_SIZE (to) < GET_MODE_SIZE... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c2095627b7499fa8ec58f29e00b12eaa6e32041e;p=gcc.git

i386.c (ix86_cannot_change_mode_class): Remove GET_MODE_SIZE (to) < GET_MODE_SIZE (from) test.

gcc/
	* config/i386/i386.c (ix86_cannot_change_mode_class): Remove
	GET_MODE_SIZE (to) < GET_MODE_SIZE (from) test.

From-SVN: r215450
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5f6d4a35450..e4ca9792217 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-09-22  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* config/i386/i386.c (ix86_cannot_change_mode_class): Remove
+	GET_MODE_SIZE (to) < GET_MODE_SIZE (from) test.
+
 2014-09-22  Richard Sandiford  <richard.sandiford@arm.com>
 
 	* hard-reg-set.h: Include hash-table.h.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index c9324367c2b..ed3d85eba5a 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -37522,13 +37522,6 @@ ix86_cannot_change_mode_class (enum machine_mode from, enum machine_mode to,
 	 the vec_dupv4hi pattern.  */
       if (GET_MODE_SIZE (from) < 4)
 	return true;
-
-      /* Vector registers do not support subreg with nonzero offsets, which
-	 are otherwise valid for integer registers.  Since we can't see
-	 whether we have a nonzero offset from here, prohibit all
-         nonparadoxical subregs changing size.  */
-      if (GET_MODE_SIZE (to) < GET_MODE_SIZE (from))
-	return true;
     }
 
   return false;