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optabs.c (set_conv_libfunc): Prefer libgcc2's __ffsMM2 functions over an external ffs function. 

gcc/
	* optabs.c (set_conv_libfunc): Prefer libgcc2's __ffsMM2 functions
	over an external ffs function.

From-SVN: r124096
This commit is contained in:
Richard Sandiford 2007-04-24 06:46:37 +00:00 committed by Richard Sandiford
parent 7f9844caf1
commit aeed4133ae
2 changed files with 11 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-04-24 Richard Sandiford <richard@codesourcery.com>
* optabs.c (set_conv_libfunc): Prefer libgcc2's __ffsMM2 functions
over an external ffs function.
2007-04-24 Chao-ying Fu <fu@mips.com>
Richard Sandiford <richard@nildram.co.uk>

10
gcc/optabs.c
View File

@ -5411,6 +5411,7 @@ void
init_optabs (void)
{
unsigned int i;
enum machine_mode int_mode;
/* Start by initializing all tables to contain CODE_FOR_nothing. */
@ -5620,6 +5621,11 @@ init_optabs (void)
/* Fill in the optabs with the insns we support. */
init_all_optabs ();
/* The ffs function operates on `int'. Fall back on it if we do not
have a libgcc2 function for that width. */
int_mode = mode_for_size (INT_TYPE_SIZE, MODE_INT, 0);
ffs_optab->handlers[(int) int_mode].libfunc = init_one_libfunc ("ffs");
/* Initialize the optabs with the names of the library functions. */
init_integral_libfuncs (add_optab, "add", '3');
init_floating_libfuncs (add_optab, "add", '3');
@ -5731,10 +5737,6 @@ init_optabs (void)
abs_optab->handlers[TYPE_MODE (complex_double_type_node)].libfunc
= init_one_libfunc ("cabs");
/* The ffs function operates on `int'. */
ffs_optab->handlers[(int) mode_for_size (INT_TYPE_SIZE, MODE_INT, 0)].libfunc
= init_one_libfunc ("ffs");
abort_libfunc = init_one_libfunc ("abort");
memcpy_libfunc = init_one_libfunc ("memcpy");
memmove_libfunc = init_one_libfunc ("memmove");