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mips.h (SLOW_BYTE_ACCESS): Turn off for MIPS16. 

2007-04-28  Sandra Loosemore  <sandra@codesourcery.com>
	    Nigel Stephens  <nigel@mips.com>

	gcc/
	* config/mips/mips.h (SLOW_BYTE_ACCESS): Turn off for MIPS16.

Co-Authored-By: Nigel Stephens <nigel@mips.com>

From-SVN: r124261
This commit is contained in:
Sandra Loosemore 2007-04-28 13:47:28 -04:00 committed by Sandra Loosemore
parent 27fabb5a62
commit 64e7e23811
2 changed files with 10 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-04-28 Sandra Loosemore <sandra@codesourcery.com>
Nigel Stephens <nigel@mips.com>
* config/mips/mips.h (SLOW_BYTE_ACCESS): Turn off for MIPS16.
2007-04-28 Jan Hubicka <jh@suse.cz>
* config/alpha/alpha.c (alpha_output_mi_thunk_osf): Use

7
gcc/config/mips/mips.h
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@ -2240,8 +2240,11 @@ typedef struct mips_args {
difference in cost between byte and (aligned) word loads.
On RISC machines, it tends to generate better code to define
this as 1, since it avoids making a QI or HI mode register. */
#define SLOW_BYTE_ACCESS 1
this as 1, since it avoids making a QI or HI mode register.
But, generating word accesses for -mips16 is generally bad as shifts
(often extended) would be needed for byte accesses. */
#define SLOW_BYTE_ACCESS (!TARGET_MIPS16)
/* Define this to be nonzero if shift instructions ignore all but the low-order
few bits. */