[src/trunk]: src/gnu/dist/gcc4/gcc/config/vax Fix a bug in movmemsi in which ...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ac8e950b2605
branches:  trunk
changeset: 773445:ac8e950b2605
user:      matt <matt%NetBSD.org@localhost>
date:      Thu Feb 02 13:32:17 2012 +0000

description:
Fix a bug in movmemsi in which couldn't handle sym(reg) expressions properly.

diffstat:

 gnu/dist/gcc4/gcc/config/vax/vax.c |  25 +++++++++++++++++++++++--
 1 files changed, 23 insertions(+), 2 deletions(-)

diffs (35 lines):

diff -r 3410a0e03d6d -r ac8e950b2605 gnu/dist/gcc4/gcc/config/vax/vax.c
--- a/gnu/dist/gcc4/gcc/config/vax/vax.c        Thu Feb 02 13:11:25 2012 +0000
+++ b/gnu/dist/gcc4/gcc/config/vax/vax.c        Thu Feb 02 13:32:17 2012 +0000
@@ -1545,8 +1545,29 @@
 
   if (GET_CODE (base) == PLUS)
     {
-      off += INTVAL (XEXP (base, 1));
-      base = XEXP (base, 0);
+      rtx a = XEXP (base, 0);
+      rtx b = XEXP (base, 1);
+      if (GET_CODE (b) == CONST_INT)
+       {
+          off += INTVAL (b);
+          base = a;
+       }
+      else if (GET_CODE (a) == REG && GET_CODE (b) == SYMBOL_REF)
+       {
+         if (off != 0)
+           {
+             base = gen_rtx_PLUS (Pmode, a, plus_constant(b, off));
+             off = 0;
+           }
+       }
+      else if (GET_CODE (a) == REG && GET_CODE (b) == PLUS)
+       {
+          off += INTVAL (XEXP (b, 1));
+         base = gen_rtx_PLUS (Pmode, a, plus_constant(XEXP (b, 0), off));
+         off = 0;
+       }
+      else
+       gcc_assert(0);
     }
   if (code == POST_INC)
     tmp = gen_rtx_POST_INC (SImode, base);