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[PATCH, committed] PowerPC MAX_FIXED_MODE_SIZE
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 11 Aug 2004 15:22:41 -0400
- Subject: [PATCH, committed] PowerPC MAX_FIXED_MODE_SIZE
While investigating MOVE_BY_PIECES / STORE_BY_PIECES, I noticed
that the rs6000 port did not define MAX_FIXED_MODE_SIZE, and the default
is incorrect for 64-bit mode. Fixed with the following patch.
David
* config/rs6000/rs6000.h (MAX_FIXED_MODE_SIZE): Define.
Index: rs6000.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/rs6000/rs6000.h,v
retrieving revision 1.329
diff -c -p -r1.329 rs6000.h
*** rs6000.h 16 Jul 2004 23:25:47 -0000 1.329
--- rs6000.h 11 Aug 2004 18:59:30 -0000
*************** do { \
*** 2103,2108 ****
--- 2103,2114 ----
/* #define FIXUNS_TRUNC_LIKE_FIX_TRUNC */
+ /* An integer expression for the size in bits of the largest integer machine
+ mode that should actually be used. */
+
+ /* Allow pairs of registers to be used, which is the intent of the default. */
+ #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (TARGET_POWERPC64 ? TImode : DImode)
+
/* Max number of bytes we can move from memory to memory
in one reasonably fast instruction. */
#define MOVE_MAX (! TARGET_POWERPC64 ? 4 : 8)