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sysv4.h (ASM_OUTPUT_DEF): Undefine.

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* rs6000/sysv4.h (ASM_OUTPUT_DEF): Undefine.
	(HANDLE_PRAGMA_PACK): Undefine.
	(SLOW_UNALIGNED_ACCESS): Define.

From-SVN: r31213
This commit is contained in:
David Edelsohn 2000-01-04 20:29:31 +00:00 • committed by David Edelsohn
parent 5fad8ebf24
commit 6be57663c9
3 changed files with 23 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2000-01-04 David Edelsohn <edelsohn@gnu.org>
* rs6000/sysv4.h (ASM_OUTPUT_DEF): Undefine.
(HANDLE_PRAGMA_PACK): Undefine.
(SLOW_UNALIGNED_ACCESS): Define.
2000-01-04 David Edelsohn <edelsohn@gnu.org>
* expmed.c (SLOW_UNALIGNED_ACCESS): Add mode and align parameters

18
gcc/config/rs6000/sysv4.h
View file

@ -350,13 +350,15 @@ do { \
/* Undefine some things which are defined by the generic svr4.h. */
#undef ASM_FILE_END
#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#undef READONLY_DATA_SECTION
#undef SELECT_SECTION
#undef ASM_DECLARE_FUNCTION_NAME
#undef ASM_FILE_END
#undef ASM_OUTPUT_CONSTRUCTOR
#undef ASM_OUTPUT_DESTRUCTOR
#undef ASM_OUTPUT_DEF
#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#undef HANDLE_PRAGMA_PACK
#undef READONLY_DATA_SECTION
#undef SELECT_SECTION
/* Use the regular svr4 definitions. */
@ -397,6 +399,14 @@ do { \
#undef STRICT_ALIGNMENT
#define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
/* Define this macro to be the value 1 if unaligned accesses have a cost
many times greater than aligned accesses, for example if they are
emulated in a trap handler. */
#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) \
((STRICT_ALIGNMENT \
|| (((MODE) == SFmode || (MODE) == DFmode || (MODE) == DImode) \
&& (ALIGN) < 4)) ? 1 : 0)
/* Alignment in bits of the stack boundary. Note, in order to allow building
one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
versions, just use 64 as the stack boundary. */

4
gcc/tm.texi
View file

@ -4731,7 +4731,9 @@ moves. This can cause significantly more instructions to be produced.
Therefore, do not set this macro non-zero if unaligned accesses only add a
cycle or two to the time for a memory access.
If the value of this macro is always zero, it need not be defined.
If the value of this macro is always zero, it need not be defined. If
this macro is defined, it should produce a non-zero value when
@code{STRICT_ALIGNMENT} is non-zero.
@findex DONT_REDUCE_ADDR
@item DONT_REDUCE_ADDR