From: uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 6 Sep 2018 21:39:47 +0000 (+0000)
Subject: 	* reg-stack.c (get_true_reg) <case FLOAT_TRUNCATE>: Reorder
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=449bd5bad5eaca41d5d25563a87b4b5265925b42;p=thirdparty%2Fgcc.git

	* reg-stack.c (get_true_reg) <case FLOAT_TRUNCATE>: Reorder
	to fallthru to FLOAT case.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@264151 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5ab342eaa10d..9657eee08009 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-09-06  Uros Bizjak  <ubizjak@gmail.com>
+
+	* reg-stack.c (get_true_reg) <case FLOAT_TRUNCATE>: Reorder
+	to fallthru to FLOAT case.
+
 2018-09-06  Will Schmidt  <will_schmidt@vnet.ibm.com>
 
 	PR target/86731
diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index 519ea6df75c2..0f1b6d52f01e 100644
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@@ -413,8 +413,9 @@ get_true_reg (rtx *pat)
 	/* Eliminate FP subregister accesses in favor of the
 	   actual FP register in use.  */
 	{
-	  rtx subreg;
-	  if (STACK_REG_P (subreg = SUBREG_REG (*pat)))
+	  rtx subreg = SUBREG_REG (*pat);
+
+	  if (STACK_REG_P (subreg))
 	    {
 	      int regno_off = subreg_regno_offset (REGNO (subreg),
 						   GET_MODE (subreg),
@@ -427,6 +428,12 @@ get_true_reg (rtx *pat)
 	  pat = &XEXP (*pat, 0);
 	  break;
 	}
+
+      case FLOAT_TRUNCATE:
+	if (!flag_unsafe_math_optimizations)
+	  return pat;
+	/* FALLTHRU */
+
       case FLOAT:
       case FIX:
       case FLOAT_EXTEND:
@@ -439,12 +446,6 @@ get_true_reg (rtx *pat)
 	  pat = &XVECEXP (*pat, 0, 0);
 	return pat;
 
-      case FLOAT_TRUNCATE:
-	if (!flag_unsafe_math_optimizations)
-	  return pat;
-	pat = &XEXP (*pat, 0);
-	break;
-
       default:
 	return pat;
       }