An issue turned up in our internal 4.6 based testing that has been
fixed on trunk. This patch backports the fix to 4.6. I also have a
small test case that I will add to both 4.6 and 4.7.
Bootstrapped and checked with x86_64-unknown-linux-gnu.
Can someone review?
Thanks,
Teresa
2011-12-07 Teresa Johnson <tejohn...@google.com>
Backport from mainline:
2011-08-05 Uros Bizjak <ubiz...@gmail.com>
* config/i386/i386.md (*movdi_internal_rex64): Use "!o" constraint
instead of "!m" for operand 0, alternative 4.
(*movdf_internal_rex64): Ditto for operand 0, alernative 6.
2011-12-07 Teresa Johnson <tejohn...@google.com>
* gcc.target/i386/movdi-rex64.c: New.
Index:
config/i386/i386.md===================================================================---
config/i386/i386.md (revision 182083)+++ config/i386/i386.md (working
copy)@@ -1960,7 +1960,7 @@ (define_insn "*movdi_internal_rex64"
[(set (match_operand:DI 0 "nonimmediate_operand"- "=r,r ,r,m
,!m,*y,*y,?r ,m ,?*Ym,?*y,*x,*x,?r ,m,?*Yi,*x,?*x,?*Ym")+ "=r,r
,r,m ,!o,*y,*y,?r ,m ,?*Ym,?*y,*x,*x,?r ,m,?*Yi,*x,?*x,?*Ym")
(match_operand:DI 1 "general_operand" "Z ,rem,i,re,n ,C
,*y,*Ym,*y,r ,m ,C ,*x,*Yi,*x,r ,m ,*Ym,*x"))] "TARGET_64BIT &&
!(MEM_P (operands[0]) && MEM_P (operands[1]))"@@ -2905,7 +2905,7 @@
(define_insn "*movdf_internal_rex64" [(set (match_operand:DF 0
"nonimmediate_operand"- "=f,m,f,r ,m,!r,!m,Y2*x,Y2*x,Y2*x,m ,Yi,r
")+ "=f,m,f,r ,m,!r,!o,Y2*x,Y2*x,Y2*x,m ,Yi,r ")
(match_operand:DF
1 "general_operand" "fm,f,G,rm,r,F ,F ,C ,Y2*x,m ,Y2*x,r ,Yi"))]
"TARGET_64BIT && !(MEM_P (operands[0]) && MEM_P (operands[1]))
Index: testsuite/gcc.target/i386/movdi-rex64.c
===================================================================
--- testsuite/gcc.target/i386/movdi-rex64.c (revision 0)
+++ testsuite/gcc.target/i386/movdi-rex64.c (revision 0)
@@ -0,0 +1,11 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-fPIE -Wwrite-strings" } */
+
+#include <string.h>
+static __thread char buffer[25];
+const char * error_message (void)
+{
+oops:
+ strcpy (buffer, "Unknown code ");
+ return 0;
+}
--
Teresa Johnson | Software Engineer | tejohn...@google.com | 408-460-2413
