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toplev.c (process_options): Disable -fprefetch-loop-arrays with -Os and issue a warning.

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* toplev.c (process_options): Disable -fprefetch-loop-arrays with
	-Os and issue a warning.

From-SVN: r49146
This commit is contained in:
Janis Johnson 2002-01-23 18:48:13 +00:00 committed by Janis Johnson
parent 85d35d90e9
commit 1398974cb3
2 changed files with 14 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-01-23 Janis Johnson <janis187@us.ibm.com>
* toplev.c (process_options): Disable -fprefetch-loop-arrays with
-Os and issue a warning.
2002-01-23 Zack Weinberg <zack@codesourcery.com> 2002-01-23 Zack Weinberg <zack@codesourcery.com>
* doc/fragments.texi, doc/hostconfig.texi: Update to reflect * doc/fragments.texi, doc/hostconfig.texi: Update to reflect
@ -119,7 +124,7 @@
2002-01-22 Janis Johnson <janis187@us.ibm.com> 2002-01-22 Janis Johnson <janis187@us.ibm.com>
* Makefile.in (loop.o): Depend on OPTABS_H. * Makefile.in (loop.o): Depend on OPTABS_H.
* loop.c (expand_builtin_prefetch): Check the prefetch operand * loop.c (emit_prefetch_instructions): Check the prefetch operand
against the predicate. against the predicate.
PR target/5379 PR target/5379

8
gcc/toplev.c
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@ -4988,6 +4988,14 @@ process_options ()
} }
#endif #endif
/* This combination of options isn't handled for i386 targets and doesn't
make much sense anyway, so don't allow it. */
if (flag_prefetch_loop_arrays && optimize_size)
{
warning ("-fprefetch-loop-arrays is not supported with -Os");
flag_prefetch_loop_arrays = 0;
}
#ifndef OBJECT_FORMAT_ELF #ifndef OBJECT_FORMAT_ELF
if (flag_function_sections && write_symbols != NO_DEBUG) if (flag_function_sections && write_symbols != NO_DEBUG)
warning ("-ffunction-sections may affect debugging on some targets"); warning ("-ffunction-sections may affect debugging on some targets");