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ia64.c (ia64_expand_vecint_compare): Decompose to EQ when using psubN.uuu. 

* config/ia64/ia64.c (ia64_expand_vecint_compare): Decompose to EQ
        when using psubN.uuu.

From-SVN: r101405
This commit is contained in:
Richard Henderson 2005-06-28 17:32:25 -07:00 committed by Richard Henderson
parent a415a2505d
commit 6283ba266f
5 changed files with 243 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-06-28 Richard Henderson <rth@redhat.com>
* config/ia64/ia64.c (ia64_expand_vecint_compare): Decompose to EQ
when using psubN.uuu.
2005-06-29 Kelley Cook <kcook@gcc.gnu.org>
* doc/gcc.texi: Update FSF address.

15
gcc/config/ia64/ia64.c
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@ -1568,7 +1568,7 @@ ia64_expand_vecint_compare (enum rtx_code code, enum machine_mode mode,
}
/* Unsigned parallel compare is not supported by the hardware. Play some
tricks to turn this into a GT comparison against 0. */
tricks to turn this into a signed comparison against 0. */
if (code == GTU)
{
switch (mode)
@ -1592,6 +1592,10 @@ ia64_expand_vecint_compare (enum rtx_code code, enum machine_mode mode,
in the sign bit set iff we saw unsigned underflow. */
x = gen_reg_rtx (V2SImode);
emit_insn (gen_xorv2si3 (x, t1, t2));
code = GT;
op0 = x;
op1 = CONST0_RTX (mode);
}
break;
@ -1601,15 +1605,16 @@ ia64_expand_vecint_compare (enum rtx_code code, enum machine_mode mode,
x = gen_reg_rtx (mode);
emit_insn (gen_rtx_SET (VOIDmode, x,
gen_rtx_US_MINUS (mode, op0, op1)));
code = EQ;
op0 = x;
op1 = CONST0_RTX (mode);
negate = !negate;
break;
default:
gcc_unreachable ();
}
code = GT;
op0 = x;
op1 = CONST0_RTX (mode);
}
x = gen_rtx_fmt_ee (code, mode, op0, op1);

76
gcc/testsuite/gcc.dg/vect/vect-reduc-7.c Normal file
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@ -0,0 +1,76 @@
/* { dg-require-effective-target vect_int } */
#include "tree-vect.h"
#define N 32
extern void abort (void);
typedef unsigned char T;
void
testmax (const T *c, T init, T result)
{
T lc[N], accum = init;
int i;
__builtin_memcpy (lc, c, sizeof(lc));
for (i = 0; i < N; i++) {
accum = accum < lc[i] ? lc[i] : accum;
}
if (accum != result)
abort ();
}
void
testmin (const T *c, T init, T result)
{
T lc[N], accum = init;
int i;
__builtin_memcpy (lc, c, sizeof(lc));
for (i = 0; i < N; i++) {
accum = accum > lc[i] ? lc[i] : accum;
}
if (accum != result)
abort ();
}
int main (void)
{
static unsigned char const A[N] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f
};
static unsigned char const B[N] = {
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f
};
static unsigned char const C[N] = {
0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
};
check_vect ();
testmin (A, 10, 1);
testmin (B, 0x7f, 0x70);
testmin (C, 0x7f, 0x09);
testmax (A, 0, 0x7f);
testmax (B, 0, 0x8f);
testmax (C, 0, 0xff);
return 0;
}

76
gcc/testsuite/gcc.dg/vect/vect-reduc-8.c Normal file
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@ -0,0 +1,76 @@
/* { dg-require-effective-target vect_int } */
#include "tree-vect.h"
#define N 32
extern void abort (void);
typedef signed char T;
void
testmax (const T *c, T init, T result)
{
T lc[N], accum = init;
int i;
__builtin_memcpy (lc, c, sizeof(lc));
for (i = 0; i < N; i++) {
accum = accum < lc[i] ? lc[i] : accum;
}
if (accum != result)
abort ();
}
void
testmin (const T *c, T init, T result)
{
T lc[N], accum = init;
int i;
__builtin_memcpy (lc, c, sizeof(lc));
for (i = 0; i < N; i++) {
accum = accum > lc[i] ? lc[i] : accum;
}
if (accum != result)
abort ();
}
int main (void)
{
static signed char const A[N] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f
};
static signed char const B[N] = {
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f
};
static signed char const C[N] = {
0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
};
check_vect ();
testmin (A, 0, 0);
testmin (B, 0, 0x80);
testmin (C, 0, 0x80);
testmax (A, 0, 0x7f);
testmax (B, 0, 0x7f);
testmax (C, 0, 0x77);
return 0;
}

76
gcc/testsuite/gcc.dg/vect/vect-reduc-9.c Normal file
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@ -0,0 +1,76 @@
/* { dg-require-effective-target vect_int } */
#include "tree-vect.h"
#define N 32
extern void abort (void);
typedef unsigned short T;
void
testmax (const T *c, T init, T result)
{
T lc[N], accum = init;
int i;
__builtin_memcpy (lc, c, sizeof(lc));
for (i = 0; i < N; i++) {
accum = accum < lc[i] ? lc[i] : accum;
}
if (accum != result)
abort ();
}
void
testmin (const T *c, T init, T result)
{
T lc[N], accum = init;
int i;
__builtin_memcpy (lc, c, sizeof(lc));
for (i = 0; i < N; i++) {
accum = accum > lc[i] ? lc[i] : accum;
}
if (accum != result)
abort ();
}
int main (void)
{
static unsigned short const A[N] = {
0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008,
0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010,
0x7000, 0x7100, 0x7200, 0x7300, 0x7400, 0x7500, 0x7600, 0x7700,
0x7ff8, 0x7ff9, 0x7ffa, 0x7ffb, 0x7ffc, 0x7ffd, 0x7ffe, 0x7fff
};
static unsigned short const B[N] = {
0x7000, 0x7100, 0x7200, 0x7300, 0x7400, 0x7500, 0x7600, 0x7700,
0x7ff8, 0x7ff9, 0x7ffa, 0x7ffb, 0x7ffc, 0x7ffd, 0x7ffe, 0x7fff,
0x8000, 0x8001, 0x8002, 0x8003, 0x8004, 0x8005, 0x8006, 0x8007,
0x8008, 0x8009, 0x800a, 0x800b, 0x800c, 0x800d, 0x800e, 0x800f
};
static unsigned short const C[N] = {
0xffff, 0xfffe, 0xfffd, 0xfffc, 0xfffb, 0xfffa, 0xfff9, 0xfff8,
0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010,
0x8000, 0x8001, 0x8002, 0x8003, 0x8004, 0x8005, 0x8006, 0x8007,
0x7000, 0x7100, 0x7200, 0x7300, 0x7400, 0x7500, 0x7600, 0x7700,
};
check_vect ();
testmin (A, 10, 1);
testmin (B, 0x7fff, 0x7000);
testmin (C, 0x7fff, 0x0009);
testmax (A, 0, 0x7fff);
testmax (B, 0, 0x800f);
testmax (C, 0, 0xffff);
return 0;
}