re PR tree-optimization/15089 (local register variable with a specified register is bad)

PR wrong-code/15089 * loop.c (scan_loop): Do not move user-specified register assignments. From-SVN: r83684

re PR tree-optimization/15089 (local register variable with a specified register is bad)
PR wrong-code/15089 * loop.c (scan_loop): Do not move user-specified register assignments. From-SVN: r83684
6ef30017 · Philip Blundell · Mark Mitchell · 7619c085 · 6ef30017 · 6ef30017
Commit 6ef30017 authored Jun 25, 2004 by Philip Blundell Committed by Mark Mitchell Jun 25, 2004
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gcc/loop.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2004-06-25  Philip Blundell  <philb@gnu.org>
+
+	PR wrong-code/15089
+	* loop.c (scan_loop): Do not move user-specified register
+	assignments.
+	
 2004-06-25  DJ Delorie  <dj@redhat.com>

 	* c-common.h (warn_cast_qual, warn_missing_format_attribute,

--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -931,6 +931,7 @@ scan_loop (struct loop *loop, int flags)
 			  || (! (REG_P (SET_SRC (set))
 				 && (REGNO (SET_SRC (set))
 				     < FIRST_PSEUDO_REGISTER))))
+		      && regno >= FIRST_PSEUDO_REGISTER 
 		      /* This test is not redundant; SET_SRC (set) might be
 			 a call-clobbered register and the life of REGNO
 			 might span a call.  */