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re PR target/59605 (error: wrong number of branch edges after unconditional jump in bb 11)

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PR target/59605
	* config/i386/i386.c (ix86_expand_set_or_movmem): Create
	jump_around_label only if it doesn't exist.

	* gcc.dg/pr59605.c: New test.

From-SVN: r206242
This commit is contained in:
H.J. Lu 2013-12-30 08:48:25 +00:00 committed by Jakub Jelinek
parent 3836fdc0c9
commit 5cf5a0e59b
4 changed files with 68 additions and 1 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2013-12-30 H.J. Lu <hongjiu.lu@intel.com>
PR target/59605
* config/i386/i386.c (ix86_expand_set_or_movmem): Create
jump_around_label only if it doesn't exist.
2013-12-28 Eric Botcazou <ebotcazou@adacore.com>
* doc/invoke.texi (output file options): Document -fada-spec-parent.

3
gcc/config/i386/i386.c
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@ -24047,7 +24047,8 @@ ix86_expand_set_or_movmem (rtx dst, rtx src, rtx count_exp, rtx val_exp,
else
{
rtx hot_label = gen_label_rtx ();
jump_around_label = gen_label_rtx ();
if (jump_around_label == NULL_RTX)
jump_around_label = gen_label_rtx ();
emit_cmp_and_jump_insns (count_exp, GEN_INT (dynamic_check - 1),
LEU, 0, GET_MODE (count_exp), 1, hot_label);
predict_jump (REG_BR_PROB_BASE * 90 / 100);

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2013-12-30 H.J. Lu <hongjiu.lu@intel.com>
PR target/59605
* gcc.dg/pr59605.c: New test.
2013-12-27 Yury Gribov <y.gribov@samsung.com>
PR target/59585

55
gcc/testsuite/gcc.dg/pr59605.c Normal file
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@ -0,0 +1,55 @@
/* { dg-do run } */
/* { dg-options "-O2" } */
/* { dg-additional-options "-minline-stringops-dynamically" { target { i?86-*-* x86_64-*-* } } } */
extern void abort (void);
#define MAX_OFFSET (sizeof (long long))
#define MAX_COPY (1024 + 8192)
#define MAX_EXTRA (sizeof (long long))
#define MAX_LENGTH (MAX_OFFSET + MAX_COPY + MAX_EXTRA)
static union {
char buf[MAX_LENGTH];
long long align_int;
long double align_fp;
} u;
char A[MAX_LENGTH];
int
main ()
{
int off, len, i;
char *p, *q;
for (i = 0; i < MAX_LENGTH; i++)
A[i] = 'A';
for (off = 0; off < MAX_OFFSET; off++)
for (len = 1; len < MAX_COPY; len++)
{
for (i = 0; i < MAX_LENGTH; i++)
u.buf[i] = 'a';
p = __builtin_memcpy (u.buf + off, A, len);
if (p != u.buf + off)
abort ();
q = u.buf;
for (i = 0; i < off; i++, q++)
if (*q != 'a')
abort ();
for (i = 0; i < len; i++, q++)
if (*q != 'A')
abort ();
for (i = 0; i < MAX_EXTRA; i++, q++)
if (*q != 'a')
abort ();
}
return 0;
}