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optabs.c (prepare_float_lib_cmp): Use libgcc_cmp_return_mode instead of word_mode. 

2007-08-31  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * optabs.c (prepare_float_lib_cmp): Use
        libgcc_cmp_return_mode instead of word_mode.
        * config/dfp-bit.h: Likewise.
        * config/fp-bit.h: Likewise.
        * config/spu/spu.c (spu_libgcc_cmp_return_mode):
        New function.
        (spu_libgcc_shift_count_mode): New function.
        (TARGET_LIBGCC_CMP_RETURN_MODE): Define.
        (TARGET_LIBGCC_SHIFT_COUNT_MODE): Define.

From-SVN: r128005
This commit is contained in:
Andrew Pinski 2007-08-31 15:45:43 -07:00
parent 973bb83254
commit 7fecf2c7db
5 changed files with 57 additions and 14 deletions
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13
gcc/ChangeLog
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@ -1,3 +1,15 @@
2007-08-31 Andrew Pinski <andrew_pinski@playstation.sony.com>
* optabs.c (prepare_float_lib_cmp): Use
libgcc_cmp_return_mode instead of word_mode.
* config/dfp-bit.h: Likewise.
* config/fp-bit.h: Likewise.
* config/spu/spu.c (spu_libgcc_cmp_return_mode):
New function.
(spu_libgcc_shift_count_mode): New function.
(TARGET_LIBGCC_CMP_RETURN_MODE): Define.
(TARGET_LIBGCC_SHIFT_COUNT_MODE): Define.
2007-08-31 Joseph Myers <joseph@codesourcery.com>
* tree-pretty-print.c: Include output.h.
@ -39,6 +51,7 @@
split out from expand_binop.
(avoid_expensive_constant): New function.
(expand_binop_directly): Remove commutative_op argument and
(expand_binop_directly): Remove commutative_op argument and
call cummutative_optab_p instead. Do not change op0 or op1
when swapping xop0 and xop1. Apply avoid_expensive_constant
to each argument after potential swapping. Enforce the

4
gcc/config/dfp-bit.h
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@ -454,9 +454,9 @@ typedef unsigned int USItype __attribute__ ((mode (SI)));
typedef unsigned int UDItype __attribute__ ((mode (DI)));
/* The type of the result of a decimal float comparison. This must
match `word_mode' in GCC for the target. */
match `__libgcc_cmp_return__' in GCC for the target. */
typedef int CMPtype __attribute__ ((mode (word)));
typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
/* Prototypes. */

4
gcc/config/fp-bit.h
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@ -108,9 +108,9 @@ typedef int TItype __attribute__ ((mode (TI)));
#endif
/* The type of the result of a floating point comparison. This must
match `word_mode' in GCC for the target. */
match `__libgcc_cmp_return__' in GCC for the target. */
#ifndef CMPtype
typedef int CMPtype __attribute__ ((mode (word)));
typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
#endif
typedef unsigned int UHItype __attribute__ ((mode (HI)));

31
gcc/config/spu/spu.c
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@ -174,6 +174,12 @@ static int cpat_info(unsigned char *arr, int size, int *prun, int *pstart);
static enum immediate_class classify_immediate (rtx op,
enum machine_mode mode);
static enum machine_mode
spu_libgcc_cmp_return_mode (void);
static enum machine_mode
spu_libgcc_shift_count_mode (void);
/* Built in types. */
tree spu_builtin_types[SPU_BTI_MAX];
@ -275,6 +281,12 @@ const struct attribute_spec spu_attribute_table[];
#undef TARGET_VECTOR_ALIGNMENT_REACHABLE
#define TARGET_VECTOR_ALIGNMENT_REACHABLE spu_vector_alignment_reachable
#undef TARGET_LIBGCC_CMP_RETURN_MODE
#define TARGET_LIBGCC_CMP_RETURN_MODE spu_libgcc_cmp_return_mode
#undef TARGET_LIBGCC_SHIFT_COUNT_MODE
#define TARGET_LIBGCC_SHIFT_COUNT_MODE spu_libgcc_shift_count_mode
struct gcc_target targetm = TARGET_INITIALIZER;
void
@ -5502,4 +5514,21 @@ spu_init_expanders (void)
* expanding the prologue. */
if (cfun)
REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = 8;
}
}
static enum machine_mode
spu_libgcc_cmp_return_mode (void)
{
/* For SPU word mode is TI mode so it is better to use SImode
for compare returns. */
return SImode;
}
static enum machine_mode
spu_libgcc_shift_count_mode (void)
{
/* For SPU word mode is TI mode so it is better to use SImode
for shift counts. */
return SImode;
}

19
gcc/optabs.c
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@ -4232,10 +4232,11 @@ prepare_float_lib_cmp (rtx *px, rtx *py, enum rtx_code *pcomparison,
rtx x = *px;
rtx y = *py;
enum machine_mode orig_mode = GET_MODE (x);
enum machine_mode mode;
enum machine_mode mode, cmp_mode;
rtx value, target, insns, equiv;
rtx libfunc = 0;
bool reversed_p = false;
cmp_mode = targetm.libgcc_cmp_return_mode ();
for (mode = orig_mode;
mode != VOIDmode;
@ -4274,14 +4275,14 @@ prepare_float_lib_cmp (rtx *px, rtx *py, enum rtx_code *pcomparison,
condition can be determined at compile-time. */
if (comparison == UNORDERED)
{
rtx temp = simplify_gen_relational (NE, word_mode, mode, x, x);
equiv = simplify_gen_relational (NE, word_mode, mode, y, y);
equiv = simplify_gen_ternary (IF_THEN_ELSE, word_mode, word_mode,
rtx temp = simplify_gen_relational (NE, cmp_mode, mode, x, x);
equiv = simplify_gen_relational (NE, cmp_mode, mode, y, y);
equiv = simplify_gen_ternary (IF_THEN_ELSE, cmp_mode, cmp_mode,
temp, const_true_rtx, equiv);
}
else
{
equiv = simplify_gen_relational (comparison, word_mode, mode, x, y);
equiv = simplify_gen_relational (comparison, cmp_mode, mode, x, y);
if (! FLOAT_LIB_COMPARE_RETURNS_BOOL (mode, comparison))
{
rtx true_rtx, false_rtx;
@ -4321,18 +4322,18 @@ prepare_float_lib_cmp (rtx *px, rtx *py, enum rtx_code *pcomparison,
default:
gcc_unreachable ();
}
equiv = simplify_gen_ternary (IF_THEN_ELSE, word_mode, word_mode,
equiv = simplify_gen_ternary (IF_THEN_ELSE, cmp_mode, cmp_mode,
equiv, true_rtx, false_rtx);
}
}
start_sequence ();
value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST,
word_mode, 2, x, mode, y, mode);
cmp_mode, 2, x, mode, y, mode);
insns = get_insns ();
end_sequence ();
target = gen_reg_rtx (word_mode);
target = gen_reg_rtx (cmp_mode);
emit_libcall_block (insns, target, value, equiv);
if (comparison == UNORDERED
@ -4341,7 +4342,7 @@ prepare_float_lib_cmp (rtx *px, rtx *py, enum rtx_code *pcomparison,
*px = target;
*py = const0_rtx;
*pmode = word_mode;
*pmode = cmp_mode;
*pcomparison = comparison;
*punsignedp = 0;
}