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i386.c (ix86_expand_sse_cmp): Split out from ... 

* config/i386/i386.c (ix86_expand_sse_cmp): Split out from ...
        (ix86_expand_sse_movcc): ... here.  Take cmp as a pre-computed
        register.
        (ix86_expand_fp_movcc): Update to match.
        (ix86_expand_fp_vcond, ix86_expand_int_vcond): New.
        * config/i386/i386-protos.h: Update.
        * config/i386/sse.md (vcondv4sf, vcondv2df): New.
        (vcond<SSEMODE124>, vcondu<SSEMODE12>): New.

        * lib/target-supports.exp (check_effective_target_vect_condition):
        Add ia64, i?86, and x86_64.

From-SVN: r98146
This commit is contained in:
Richard Henderson 2005-04-14 10:46:08 -07:00 committed by Richard Henderson
parent 25f710babd
commit ae46a07ab2
6 changed files with 233 additions and 16 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2005-04-14 Richard Henderson <rth@redhat.com>
* config/i386/i386.c (ix86_expand_sse_cmp): Split out from ...
(ix86_expand_sse_movcc): ... here. Take cmp as a pre-computed
register.
(ix86_expand_fp_movcc): Update to match.
(ix86_expand_fp_vcond, ix86_expand_int_vcond): New.
* config/i386/i386-protos.h: Update.
* config/i386/sse.md (vcondv4sf, vcondv2df): New.
(vcond<SSEMODE124>, vcondu<SSEMODE12>): New.
2005-04-14 Joseph S. Myers <joseph@codesourcery.com>
* doc/cpp.texi, doc/install.texi: Change references to GCC 3.5 to

2
gcc/config/i386/i386-protos.h
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@ -150,6 +150,8 @@ extern void ix86_expand_branch (enum rtx_code, rtx);
extern int ix86_expand_setcc (enum rtx_code, rtx);
extern int ix86_expand_int_movcc (rtx[]);
extern int ix86_expand_fp_movcc (rtx[]);
extern bool ix86_expand_fp_vcond (rtx[]);
extern bool ix86_expand_int_vcond (rtx[], bool);
extern int ix86_expand_int_addcc (rtx[]);
extern void ix86_expand_call (rtx, rtx, rtx, rtx, rtx, int);
extern void x86_initialize_trampoline (rtx, rtx, rtx);

162
gcc/config/i386/i386.c
View File

@ -10141,12 +10141,14 @@ ix86_expand_sse_fp_minmax (rtx dest, enum rtx_code code, rtx cmp_op0,
return true;
}
static void
ix86_expand_sse_movcc (rtx dest, enum rtx_code code, rtx cmp_op0, rtx cmp_op1,
rtx op_true, rtx op_false)
/* Expand an sse vector comparison. Return the register with the result. */
static rtx
ix86_expand_sse_cmp (rtx dest, enum rtx_code code, rtx cmp_op0, rtx cmp_op1,
rtx op_true, rtx op_false)
{
enum machine_mode mode = GET_MODE (dest);
rtx t1, t2, t3, x;
rtx x;
cmp_op0 = force_reg (mode, cmp_op0);
if (!nonimmediate_operand (cmp_op1, mode))
@ -10155,24 +10157,33 @@ ix86_expand_sse_movcc (rtx dest, enum rtx_code code, rtx cmp_op0, rtx cmp_op1,
if (optimize
|| reg_overlap_mentioned_p (dest, op_true)
|| reg_overlap_mentioned_p (dest, op_false))
t1 = gen_reg_rtx (mode);
else
t1 = dest;
dest = gen_reg_rtx (mode);
x = gen_rtx_fmt_ee (code, mode, cmp_op0, cmp_op1);
gcc_assert (sse_comparison_operator (x, VOIDmode));
emit_insn (gen_rtx_SET (VOIDmode, t1, x));
emit_insn (gen_rtx_SET (VOIDmode, dest, x));
return dest;
}
/* Expand DEST = CMP ? OP_TRUE : OP_FALSE into a sequence of logical
operations. This is used for both scalar and vector conditional moves. */
static void
ix86_expand_sse_movcc (rtx dest, rtx cmp, rtx op_true, rtx op_false)
{
enum machine_mode mode = GET_MODE (dest);
rtx t2, t3, x;
if (op_false == CONST0_RTX (mode))
{
op_true = force_reg (mode, op_true);
x = gen_rtx_AND (mode, t1, op_true);
x = gen_rtx_AND (mode, cmp, op_true);
emit_insn (gen_rtx_SET (VOIDmode, dest, x));
}
else if (op_true == CONST0_RTX (mode))
{
op_false = force_reg (mode, op_false);
x = gen_rtx_NOT (mode, t1);
x = gen_rtx_NOT (mode, cmp);
x = gen_rtx_AND (mode, x, op_false);
emit_insn (gen_rtx_SET (VOIDmode, dest, x));
}
@ -10187,10 +10198,10 @@ ix86_expand_sse_movcc (rtx dest, enum rtx_code code, rtx cmp_op0, rtx cmp_op1,
else
t3 = dest;
x = gen_rtx_AND (mode, op_true, t1);
x = gen_rtx_AND (mode, op_true, cmp);
emit_insn (gen_rtx_SET (VOIDmode, t2, x));
x = gen_rtx_NOT (mode, t1);
x = gen_rtx_NOT (mode, cmp);
x = gen_rtx_AND (mode, x, op_false);
emit_insn (gen_rtx_SET (VOIDmode, t3, x));
@ -10199,6 +10210,8 @@ ix86_expand_sse_movcc (rtx dest, enum rtx_code code, rtx cmp_op0, rtx cmp_op1,
}
}
/* Expand a floating-point conditional move. Return true if successful. */
int
ix86_expand_fp_movcc (rtx operands[])
{
@ -10230,8 +10243,9 @@ ix86_expand_fp_movcc (rtx operands[])
operands[3]))
return 1;
ix86_expand_sse_movcc (operands[0], code, ix86_compare_op0,
ix86_compare_op1, operands[2], operands[3]);
tmp = ix86_expand_sse_cmp (operands[0], code, ix86_compare_op0,
ix86_compare_op1, operands[2], operands[3]);
ix86_expand_sse_movcc (operands[0], tmp, operands[2], operands[3]);
return 1;
}
@ -10282,6 +10296,124 @@ ix86_expand_fp_movcc (rtx operands[])
return 1;
}
/* Expand a floating-point vector conditional move; a vcond operation
rather than a movcc operation. */
bool
ix86_expand_fp_vcond (rtx operands[])
{
enum rtx_code code = GET_CODE (operands[3]);
rtx cmp;
code = ix86_prepare_sse_fp_compare_args (operands[0], code,
&operands[4], &operands[5]);
if (code == UNKNOWN)
return false;
if (ix86_expand_sse_fp_minmax (operands[0], code, operands[4],
operands[5], operands[1], operands[2]))
return true;
cmp = ix86_expand_sse_cmp (operands[0], code, operands[4], operands[5],
operands[1], operands[2]);
ix86_expand_sse_movcc (operands[0], cmp, operands[1], operands[2]);
return true;
}
/* Expand a signed integral vector conditional move. */
bool
ix86_expand_int_vcond (rtx operands[], bool unsignedp)
{
enum machine_mode mode = GET_MODE (operands[0]);
enum rtx_code code = GET_CODE (operands[3]);
rtx cmp, x;
if (unsignedp)
code = signed_condition (code);
if (code == NE || code == LE || code == GE)
{
/* Inverse of a supported code. */
x = operands[1];
operands[1] = operands[2];
operands[2] = x;
code = reverse_condition (code);
}
if (code == LT)
{
/* Swap of a supported code. */
x = operands[4];
operands[4] = operands[5];
operands[5] = x;
code = swap_condition (code);
}
gcc_assert (code == EQ || code == GT);
/* Unlike floating-point, we can rely on the optimizers to have already
converted to MIN/MAX expressions, so we don't have to handle that. */
/* Unsigned GT is not directly supported. We can zero-extend QI and
HImode elements to the next wider element size, use a signed compare,
then repack. For three extra instructions, this is definitely a win. */
if (code == GT && unsignedp)
{
rtx o0l, o0h, o1l, o1h, cl, ch, zero;
enum machine_mode wider;
rtx (*unpackl) (rtx, rtx, rtx);
rtx (*unpackh) (rtx, rtx, rtx);
rtx (*pack) (rtx, rtx, rtx);
switch (mode)
{
case V16QImode:
wider = V8HImode;
unpackl = gen_sse2_punpcklbw;
unpackh = gen_sse2_punpckhbw;
pack = gen_sse2_packsswb;
break;
case V8HImode:
wider = V4SImode;
unpackl = gen_sse2_punpcklwd;
unpackh = gen_sse2_punpckhwd;
pack = gen_sse2_packssdw;
break;
default:
gcc_unreachable ();
}
operands[4] = force_reg (mode, operands[4]);
operands[5] = force_reg (mode, operands[5]);
o0l = gen_reg_rtx (wider);
o0h = gen_reg_rtx (wider);
o1l = gen_reg_rtx (wider);
o1h = gen_reg_rtx (wider);
cl = gen_reg_rtx (wider);
ch = gen_reg_rtx (wider);
cmp = gen_reg_rtx (mode);
zero = force_reg (mode, CONST0_RTX (mode));
emit_insn (unpackl (gen_lowpart (mode, o0l), operands[4], zero));
emit_insn (unpackh (gen_lowpart (mode, o0h), operands[4], zero));
emit_insn (unpackl (gen_lowpart (mode, o1l), operands[5], zero));
emit_insn (unpackh (gen_lowpart (mode, o1h), operands[5], zero));
x = gen_rtx_GT (wider, o0l, o1l);
emit_insn (gen_rtx_SET (VOIDmode, cl, x));
x = gen_rtx_GT (wider, o0h, o1h);
emit_insn (gen_rtx_SET (VOIDmode, ch, x));
emit_insn (pack (cmp, cl, ch));
}
else
cmp = ix86_expand_sse_cmp (operands[0], code, operands[4], operands[5],
operands[1], operands[2]);
ix86_expand_sse_movcc (operands[0], cmp, operands[1], operands[2]);
return true;
}
/* Expand conditional increment or decrement using adb/sbb instructions.
The default case using setcc followed by the conditional move can be
done by generic code. */

64
gcc/config/i386/sse.md
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@ -710,6 +710,22 @@
[(set_attr "type" "ssecomi")
(set_attr "mode" "SF")])
(define_expand "vcondv4sf"
[(set (match_operand:V4SF 0 "register_operand" "")
(if_then_else:V4SF
(match_operator 3 ""
[(match_operand:V4SF 4 "nonimmediate_operand" "")
(match_operand:V4SF 5 "nonimmediate_operand" "")])
(match_operand:V4SF 1 "general_operand" "")
(match_operand:V4SF 2 "general_operand" "")))]
"TARGET_SSE"
{
if (ix86_expand_fp_vcond (operands))
DONE;
else
FAIL;
})
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Parallel single-precision floating point logical operations
@ -1648,6 +1664,22 @@
[(set_attr "type" "ssecomi")
(set_attr "mode" "DF")])
(define_expand "vcondv2df"
[(set (match_operand:V2DF 0 "register_operand" "")
(if_then_else:V2DF
(match_operator 3 ""
[(match_operand:V2DF 4 "nonimmediate_operand" "")
(match_operand:V2DF 5 "nonimmediate_operand" "")])
(match_operand:V2DF 1 "general_operand" "")
(match_operand:V2DF 2 "general_operand" "")))]
"TARGET_SSE2"
{
if (ix86_expand_fp_vcond (operands))
DONE;
else
FAIL;
})
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Parallel double-precision floating point logical operations
@ -2602,6 +2634,38 @@
[(set_attr "type" "ssecmp")
(set_attr "mode" "TI")])
(define_expand "vcond<mode>"
[(set (match_operand:SSEMODE124 0 "register_operand" "")
(if_then_else:SSEMODE124
(match_operator 3 ""
[(match_operand:SSEMODE124 4 "nonimmediate_operand" "")
(match_operand:SSEMODE124 5 "nonimmediate_operand" "")])
(match_operand:SSEMODE124 1 "general_operand" "")
(match_operand:SSEMODE124 2 "general_operand" "")))]
"TARGET_SSE2"
{
if (ix86_expand_int_vcond (operands, false))
DONE;
else
FAIL;
})
(define_expand "vcondu<mode>"
[(set (match_operand:SSEMODE12 0 "register_operand" "")
(if_then_else:SSEMODE12
(match_operator 3 ""
[(match_operand:SSEMODE12 4 "nonimmediate_operand" "")
(match_operand:SSEMODE12 5 "nonimmediate_operand" "")])
(match_operand:SSEMODE12 1 "general_operand" "")
(match_operand:SSEMODE12 2 "general_operand" "")))]
"TARGET_SSE2"
{
if (ix86_expand_int_vcond (operands, true))
DONE;
else
FAIL;
})
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Parallel integral logical operations

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2005-04-14 Richard Henderson <rth@redhat.com>
* lib/target-supports.exp (check_effective_target_vect_condition):
Add ia64, i?86, and x86_64.
2005-04-14 Steven G. Kargl <kargls@comcast.net>
* gfortran.dg/underflow.f90: Use tiny(x)/huge(x).

5
gcc/testsuite/lib/target-supports.exp
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@ -844,7 +844,10 @@ proc check_effective_target_vect_condition { } {
verbose "check_effective_target_vect_cond: using cached result" 2
} else {
set et_vect_cond_saved 0
if { [istarget powerpc*-*-*] } {
if { [istarget powerpc*-*-*]
|| [istarget ia64-*-*]
|| [istarget i?86-*-*]
|| [istarget x86_64-*-*] } {
set et_vect_cond_saved 1
}
}