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optabs.c (prepare_libcall_arg): New function. 

2015-11-09  Steve Ellcey  <sellcey@imgtec.com>

	* optabs.c (prepare_libcall_arg): New function.
	(expand_fixed_convert): Add call to prepare_libcall_arg.

From-SVN: r230065
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Steve Ellcey 2015-11-09 23:56:33 +00:00 committed by Steve Ellcey
parent 82669b680c
commit cbb521e78e
2 changed files with 35 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-11-09 Steve Ellcey <sellcey@imgtec.com>
* optabs.c (prepare_libcall_arg): New function.
(expand_fixed_convert): Add call to prepare_libcall_arg.
2015-11-09 Nikolai Bozhenov <n.bozhenov@samsung.com>
* sched-int.h (dump_rgn_dependencies_dot): Declare

30
gcc/optabs.c
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@ -4838,6 +4838,33 @@ expand_fix (rtx to, rtx from, int unsignedp)
}
}
/* Promote integer arguments for a libcall if necessary.
emit_library_call_value cannot do the promotion because it does not
know if it should do a signed or unsigned promotion. This is because
there are no tree types defined for libcalls. */
static rtx
prepare_libcall_arg (rtx arg, int uintp)
{
machine_mode mode = GET_MODE (arg);
machine_mode arg_mode;
if (SCALAR_INT_MODE_P (mode))
{
/* If we need to promote the integer function argument we need to do
it here instead of inside emit_library_call_value because in
emit_library_call_value we don't know if we should do a signed or
unsigned promotion. */
int unsigned_p = 0;
arg_mode = promote_function_mode (NULL_TREE, mode,
&unsigned_p, NULL_TREE, 0);
if (arg_mode != mode)
return convert_to_mode (arg_mode, arg, uintp);
}
return arg;
}
/* Generate code to convert FROM or TO a fixed-point.
If UINTP is true, either TO or FROM is an unsigned integer.
If SATP is true, we need to saturate the result. */
@ -4880,6 +4907,9 @@ expand_fixed_convert (rtx to, rtx from, int uintp, int satp)
libfunc = convert_optab_libfunc (tab, to_mode, from_mode);
gcc_assert (libfunc);
from = prepare_libcall_arg (from, uintp);
from_mode = GET_MODE (from);
start_sequence ();
value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST, to_mode,
1, from, from_mode);