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sparc.h (TARGET_BUGGY_QP_LIB): Define to zero.

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2002-05-07  David S. Miller  <davem@redhat.com>

	* config/sparc/sparc.h (TARGET_BUGGY_QP_LIB): Define to zero.
	* config/sparc/sol2.h (TARGET_BUGGY_QP_LIB): Override to one.
	* config/sparc/sparc.c (emit_soft_tfmode_libcall): If the Qp
	library implementation clobbers the output before the inputs
	are fully consumed, use stack temporary for the output.

From-SVN: r53322
This commit is contained in:
David S. Miller 2002-05-09 03:38:44 -07:00 • committed by David S. Miller
parent 0a0576f3f1
commit 4e7d5d2733
4 changed files with 29 additions and 20 deletions
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8
gcc/ChangeLog
View file

@ -1,3 +1,11 @@
2002-05-07 David S. Miller <davem@redhat.com>
* config/sparc/sparc.h (TARGET_BUGGY_QP_LIB): Define to zero.
* config/sparc/sol2.h (TARGET_BUGGY_QP_LIB): Override to one.
* config/sparc/sparc.c (emit_soft_tfmode_libcall): If the Qp
library implementation clobbers the output before the inputs
are fully consumed, use stack temporary for the output.
2002-05-09 Jason Thorpe <thorpej@wasabisystems.com>
* config/netbsd.h (CPP_SPEC): Remove.

6
gcc/config/sparc/sol2.h
View file

@ -225,6 +225,12 @@ Boston, MA 02111-1307, USA. */
#define MODDI3_LIBCALL "__rem64"
#define UMODDI3_LIBCALL "__urem64"
/* Solaris's _Qp_* library routine implementation clobbers the output
memory before the inputs are fully consumed. */
#undef TARGET_BUGGY_QP_LIB
#define TARGET_BUGGY_QP_LIB 1
#undef INIT_SUBTARGET_OPTABS
#define INIT_SUBTARGET_OPTABS \
fixsfdi_libfunc \

30
gcc/config/sparc/sparc.c
View file

@ -2476,7 +2476,7 @@ emit_soft_tfmode_libcall (func_name, nargs, operands)
rtx *operands;
{
rtx ret_slot = NULL, arg[3], func_sym;
int i, j;
int i;
/* We only expect to be called for conversions, unary, and binary ops. */
if (nargs < 2 || nargs > 3)
@ -2490,27 +2490,17 @@ emit_soft_tfmode_libcall (func_name, nargs, operands)
/* TFmode arguments and return values are passed by reference. */
if (GET_MODE (this_arg) == TFmode)
{
if (GET_CODE (this_arg) == MEM)
{
this_arg = XEXP (this_arg, 0);
int force_stack_temp;
/* Make sure the output is not in the same place
as one of our inputs. */
if (i == 0)
{
for (j = 1; j < nargs; j++)
if (rtx_equal_p (operands[0], operands[j]))
break;
force_stack_temp = 0;
if (TARGET_BUGGY_QP_LIB && i == 0)
force_stack_temp = 1;
if (j != nargs)
{
ret_slot = assign_stack_temp (TFmode,
GET_MODE_SIZE (TFmode), 0);
this_arg = XEXP (ret_slot, 0);
}
}
}
else if (CONSTANT_P (this_arg))
if (GET_CODE (this_arg) == MEM
&& ! force_stack_temp)
this_arg = XEXP (this_arg, 0);
else if (CONSTANT_P (this_arg)
&& ! force_stack_temp)
{
this_slot = force_const_mem (TFmode, this_arg);
this_arg = XEXP (this_slot, 0);

5
gcc/config/sparc/sparc.h
View file

@ -2598,6 +2598,11 @@ do { \
#define LTTF2_LIBCALL "_Q_flt"
#define LETF2_LIBCALL "_Q_fle"
/* Assume by default that the _Qp_* 64-bit libcalls are implemented such
that the inputs are fully consumed before the output memory is clobbered. */
#define TARGET_BUGGY_QP_LIB 0
/* We can define the TFmode sqrt optab only if TARGET_FPU. This is because
with soft-float, the SFmode and DFmode sqrt instructions will be absent,
and the compiler will notice and try to use the TFmode sqrt instruction