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re PR bootstrap/68404 (PGO/LTO bootstrap failure on ppc64le)

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[gcc]
2016-02-09  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/68404
	* config/rs6000/predicates.md (fusion_gpr_addis): Prevent fusing
	an ADDIS that adds a pointer to a large constant that sets the
	upper16 bits with a load operation.

[gcc/testsuite]
2016-02-09  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/68404
	* gcc.target/powerpc/fusion.c: Rewrite test to use TOC fusion
	instead accessing a really large arrray.
	* gcc.target/powerpc/fusion3.c: Likewise.

From-SVN: r233255
This commit is contained in:
Michael Meissner 2016-02-09 22:31:31 +00:00 committed by Michael Meissner
parent af583c4457
commit ab04995c1c
5 changed files with 54 additions and 29 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2016-02-09 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/68404
* config/rs6000/predicates.md (fusion_gpr_addis): Prevent fusing
an ADDIS that adds a pointer to a large constant that sets the
upper16 bits with a load operation.
2016-02-09 Charles Baylis <charles.baylis@linaro.org>
PR target/68532

13
gcc/config/rs6000/predicates.md
View File

@ -1708,23 +1708,14 @@
(match_code "const_int,high,plus")
{
HOST_WIDE_INT value;
rtx int_const;
if (GET_CODE (op) == HIGH)
return 1;
if (CONST_INT_P (op))
int_const = op;
else if (GET_CODE (op) == PLUS
&& base_reg_operand (XEXP (op, 0), Pmode)
&& CONST_INT_P (XEXP (op, 1)))
int_const = XEXP (op, 1);
else
if (!CONST_INT_P (op))
return 0;
value = INTVAL (int_const);
value = INTVAL (op);
if ((value & (HOST_WIDE_INT)0xffff) != 0)
return 0;

7
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2016-02-09 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/68404
* gcc.target/powerpc/fusion.c: Rewrite test to use TOC fusion
instead accessing a really large arrray.
* gcc.target/powerpc/fusion3.c: Likewise.
2016-02-09 Charles Baylis <charles.baylis@linaro.org>
PR target/68532

29
gcc/testsuite/gcc.target/powerpc/fusion.c
View File

@ -1,17 +1,28 @@
/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-do compile { target { powerpc*-*-* && lp64 } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
/* { dg-require-effective-target powerpc_p8vector_ok } */
/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power7" } } */
/* { dg-options "-mcpu=power7 -mtune=power8 -O3" } */
/* { dg-options "-mcpu=power7 -mtune=power8 -O3 -mcmodel=medium" } */
#define LARGE 0x12345
#define SIZE 4
struct foo {
unsigned char uc;
signed char sc;
unsigned short us;
short ss;
int i;
unsigned u;
};
int fusion_uchar (unsigned char *p){ return p[LARGE]; }
int fusion_schar (signed char *p){ return p[LARGE]; }
int fusion_ushort (unsigned short *p){ return p[LARGE]; }
int fusion_short (short *p){ return p[LARGE]; }
int fusion_int (int *p){ return p[LARGE]; }
unsigned fusion_uns (unsigned *p){ return p[LARGE]; }
static struct foo st[SIZE];
struct foo *ptr_st = &st[0];
int fusion_uchar (void){ return st[SIZE-1].uc; }
int fusion_schar (void){ return st[SIZE-1].sc; }
int fusion_ushort (void){ return st[SIZE-1].us; }
int fusion_short (void){ return st[SIZE-1].ss; }
int fusion_int (void){ return st[SIZE-1].i; }
unsigned fusion_uns (void){ return st[SIZE-1].u; }
/* { dg-final { scan-assembler-times "gpr load fusion" 6 } } */
/* { dg-final { scan-assembler-times "lbz" 2 } } */

27
gcc/testsuite/gcc.target/powerpc/fusion3.c
View File

@ -4,15 +4,24 @@
/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power7" } } */
/* { dg-options "-mcpu=power7 -mtune=power9 -O3" } */
#define LARGE 0x12345
#define SIZE 4
struct foo {
float f;
double d;
};
int fusion_float_read (float *p){ return p[LARGE]; }
int fusion_double_read (double *p){ return p[LARGE]; }
static struct foo st[SIZE];
struct foo *ptr_st = &st[0];
void fusion_float_write (float *p, float f){ p[LARGE] = f; }
void fusion_double_write (double *p, double d){ p[LARGE] = d; }
float fusion_float_read (void){ return st[SIZE].f; }
double fusion_float_extend (void){ return (double)st[SIZE].f; }
double fusion_double_read (void){ return st[SIZE].d; }
/* { dg-final { scan-assembler "load fusion, type SF" } } */
/* { dg-final { scan-assembler "load fusion, type DF" } } */
/* { dg-final { scan-assembler "store fusion, type SF" } } */
/* { dg-final { scan-assembler "store fusion, type DF" } } */
void fusion_float_write (float f){ st[SIZE].f = f; }
void fusion_float_truncate (double d){ st[SIZE].f = (float)d; }
void fusion_double_write (double d){ st[SIZE].d = d; }
/* { dg-final { scan-assembler-times "load fusion, type SF" 2 } } */
/* { dg-final { scan-assembler-times "load fusion, type DF" 1 } } */
/* { dg-final { scan-assembler-times "store fusion, type SF" 2 } } */
/* { dg-final { scan-assembler-times "store fusion, type DF" 1 } } */