mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-05 10:50:51 +08:00
Code Issues Packages Projects Releases Wiki Activity

re PR target/39423 ([SH] performance regression: lost mov @(disp,Rn))

Browse Source 
PR target/39423
	* config/sh/predicates.md (mem_index_disp_operand): Check for
	arith_reg_operand instead of REG_P.

	PR target/39423
	* gcc.c-torture/compile/pr39423-1.c: New.
	* gcc.c-torture/compile/pr39423-2.c: New.

From-SVN: r190326
This commit is contained in:
Oleg Endo 2012-08-12 13:23:20 +00:00
parent 58341a4294
commit 05852a5f5a
5 changed files with 98 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2012-08-12 Oleg Endo <olegendo@gcc.gnu.org>
PR target/39423
* config/sh/predicates.md (mem_index_disp_operand): Check for
arith_reg_operand instead of REG_P.
2012-08-11 Bernd Schmidt <bernds@codesourcery.com>
* reload1.c (replaced_subreg, gen_reload): Add

11
gcc/config/sh/predicates.md
View File

@ -521,14 +521,17 @@
plus1_rtx = XEXP (plus0_rtx, 0);
if (GET_CODE (plus1_rtx) != PLUS)
return 0;
if (! arith_reg_operand (XEXP (plus1_rtx, 1), GET_MODE (XEXP (plus1_rtx, 1))))
return 0;
mult_rtx = XEXP (plus1_rtx, 0);
if (GET_CODE (mult_rtx) != MULT)
return 0;
return REG_P (XEXP (mult_rtx, 0)) && CONST_INT_P (XEXP (mult_rtx, 1))
&& exact_log2 (INTVAL (XEXP (mult_rtx, 1))) > 0
&& REG_P (XEXP (plus1_rtx, 1))
if (! arith_reg_operand (XEXP (mult_rtx, 0), GET_MODE (XEXP (mult_rtx, 0)))
|| ! CONST_INT_P (XEXP (mult_rtx, 1)))
return 0;
return exact_log2 (INTVAL (XEXP (mult_rtx, 1))) > 0
&& sh_legitimate_index_p (mode, XEXP (plus0_rtx, 1), TARGET_SH2A, true);
})

6
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2012-08-12 Oleg Endo <olegendo@gcc.gnu.org>
PR target/39423
* gcc.c-torture/compile/pr39423-1.c: New.
* gcc.c-torture/compile/pr39423-2.c: New.
2012-08-12 Tobias Burnus <burnus@net-b.de>
PR fortran/54221

22
gcc/testsuite/gcc.c-torture/compile/pr39423-1.c Normal file
View File

@ -0,0 +1,22 @@
/* PR target/39423 */
int
foo (const char *name, int nmlen, char *flags)
{
const char *nonspc;
int len, n, lfn;
int needlfn[2], dotspc[2];
unsigned char locale[2];
for (nonspc = &name[nmlen - 1]; nonspc >= name && *nonspc == ' '; ++n)
{
if (!nmlen)
{
needlfn[name >= nonspc] = !0, dotspc[n != 0] =
locale[0], --n, name += len, nmlen -= len;
}
}
if (!lfn && ((dotspc[0] == ' ' && !(len & 0x0010)) || dotspc[0] == '.'))
return 22;
if (!(needlfn[0] || needlfn[1]))
*flags |= 0x02;
}

57
gcc/testsuite/gcc.c-torture/compile/pr39423-2.c Normal file
View File

@ -0,0 +1,57 @@
/* PR target/39423 */
typedef unsigned short uint16_t;
typedef struct
{
short x, y;
} P;
typedef struct
{
uint16_t w, h;
} D;
typedef struct
{
P p;
D s;
} A;
typedef struct
{
uint16_t f;
} W;
typedef struct
{
void* w;
D s;
} T;
extern void* foo00 (void*, void*);
void foo01 (W* w)
{
void* it;
uint16_t c, i;
T* cl;
T* rs;
T* t;
uint16_t rh = 0;
uint16_t v = !(w->f & 0x8000);
A a = { };
for (c = 0, it = foo00 (w, 0); it; it = foo00 (w, it), c++);
for (it = foo00 (w, 0), i = 0; i <= c; it = foo00 (w, it), i++, cl++)
{
if (i)
for (t = rs; t < cl; t++)
*((uint16_t*)&t->s + ((!v) ? 1 : 0)) = rh;
rh = (rh > ((*((uint16_t*)&a.s + ((!v) ? 1 : 0)))))
? rh
: ((*((uint16_t*)&a.s + ((!v) ? 1 : 0))));
}
}