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re PR tree-optimization/48641 (ICE: verify_flow_info failed: Wrong frequency of block 77 -419530 with -O -fno-tree-ccp -fno-tree-copy-prop) 

PR middle-end/48641 
	* tree-ssa-threadupdate.c (redirect_edges): Watch for overflow.
	* gcc.dg/compile/pr48641.c: New file.

From-SVN: r182693
This commit is contained in:
Jan Hubicka 2011-12-27 11:41:58 +01:00 committed by Jan Hubicka
parent a055ca4382
commit 0bed228eb6
4 changed files with 264 additions and 1 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2011-12-25 Jan Hubicka <jh@suse.cz>
PR middle-end/48641
* tree-ssa-threadupdate.c (redirect_edges): Watch for overflow.
2011-12-26 Oleg Endo <oleg.endo@t-online.de>
* config/sh/sync.md: Add soft atomics ABI description.

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2011-12-25 Jan Hubicka <jh@suse.cz>
PR middle-end/48641
* gcc.dg/compile/pr48641.c: New file.
2011-12-26 Joey Ye <joey.ye@arm.com>
PR middle-end/51200

249
gcc/testsuite/gcc.c-torture/compile/pr48641.c Normal file
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@ -0,0 +1,249 @@
/* { dg-options "-O -fno-tree-ccp -fno-tree-copy-prop" } */
#define CSF __builtin_copysignf
#define CSD __builtin_copysign
#define CSL __builtin_copysignl
#define MODFF __builtin_modff
#define MODFD __builtin_modf
#define MODFL __builtin_modfl
extern void link_error (void);
void
foo (void)
{
float iptrf;
double iptr;
long double iptrl;
long long iptrll;
if ((CSF (1.0F, MODFF (0x1p10F + 0.5f, &iptrf)) != CSF (1.0F, 0.5f))
|| (CSF (1.0F, iptrf) != 0x1p10f))
link_error ();
if (MODFD (0x1p10F + 0.5, &iptr) != 0.5
|| (CSD (1.0, MODFD (0x1p10F + 0.5, &iptr)) != CSD (1.0, 0.5))
|| (CSD (1.0, iptr) != CSD (1.0, 0x1p10)))
link_error ();
if (MODFL (0x1p10F + 0.5l, &iptrl) != 0.5l
|| (CSL (1.0L, MODFL (0x1p10F + 0.5l, &iptrl)) != CSL (1.0L, 0.5l))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0x1p10l)))
link_error ();
if ((CSF (1.0F, (MODFF (0x1p10F + 0x1p-10f, &iptrf)))
!= CSF (1.0F, 0x1p-10f))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 0x1p10f)))
link_error ();
if (MODFD (0x1p10F + 0x1p-10, &iptr) != 0x1p-10
|| (CSD (1.0, (MODFD (0x1p10F + 0x1p-10, &iptr)))
!= CSD (1.0, 0x1p-10)) || (CSD (1.0, iptr) != CSD (1.0, 0x1p10)))
link_error ();
if (MODFL (0x1p10F + 0x1p-10l, &iptrl) != 0x1p-10l
|| (CSL (1.0L, (MODFL (0x1p10F + 0x1p-10l, &iptrl)))
!= CSL (1.0L, 0x1p-10l))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0x1p10l)))
link_error ();
if ((CSF (1.0F, (MODFF (12345678L / 17.0f, &iptrf)))
!= CSF (1.0F, (-726216L + 12345678L / 17.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 726216.0f)))
link_error ();
if (MODFD (12345678L / 17.0, &iptr) != -726216L + 12345678L / 17.0
|| (CSD (1.0, (MODFD (12345678L / 17.0, &iptr)))
!= CSD (1.0, (-726216L + 12345678L / 17.0)))
|| (CSD (1.0, iptr) != CSD (1.0, 726216.0)))
link_error ();
if ((CSL (1.0L, (MODFL (12345678L / 17.0l, &iptrl)))
!= CSL (1.0L, (-726216L + 12345678L / 17.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 726216.0l)))
link_error ();
if (MODFF (555.555f, &iptrf) != -555 + 555.555f
|| (CSF (1.0F, iptrf) != CSF (1.0F, 555.0f)))
link_error ();
if (MODFD (555.555, &iptr) != -555 + 555.555
|| (CSD (1.0, (MODFD (555.555, &iptr))) != CSD (1.0, (-555 + 555.555)))
|| (CSD (1.0, iptr) != CSD (1.0, 555.0)))
link_error ();
if (MODFL (555.555l, &iptrl) != -555 + 555.555l
|| (CSL (1.0L, (MODFL (555.555l, &iptrl)))
!= CSL (1.0L, (-555 + 555.555l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 555.0l)))
link_error ();
if (MODFF (5000 / 11.0f, &iptrf) != -454 + 5000 / 11.0f
|| (CSF (1.0F, (MODFF (5000 / 11.0f, &iptrf)))
!= CSF (1.0F, (-454 + 5000 / 11.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 454.0f)))
link_error ();
if (MODFD (5000 / 11.0, &iptr) != -454 + 5000 / 11.0
|| (CSD (1.0, (MODFD (5000 / 11.0, &iptr)))
!= CSD (1.0, (-454 + 5000 / 11.0)))
|| (CSD (1.0, iptr) != CSD (1.0, 454.0)))
link_error ();
if ((CSL (1.0L, (MODFL (5000 / 11.0l, &iptrl)))
!= CSL (1.0L, (-454 + 5000 / 11.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 454.0l)))
link_error ();
if ((CSF (1.0F, (MODFF (1000 / 7.0f, &iptrf)))
!= CSF (1.0F, (-142 + 1000 / 7.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 142.0f)))
link_error ();
if ((CSD (1.0, (MODFD (1000 / 7.0, &iptr)))
!= CSD (1.0, (-142 + 1000 / 7.0)))
|| (CSD (1.0, iptr) != CSD (1.0, 142.0)))
link_error ();
if ((CSL (1.0L, (MODFL (1000 / 7.0l, &iptrl)))
!= CSL (1.0L, (-142 + 1000 / 7.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 142.0l)))
link_error ();
if (MODFF (123 / 7.0f, &iptrf) != -17 + 123 / 7.0f
|| (CSF (1.0F, iptrf) != CSF (1.0F, 17.0f)))
link_error ();
if (MODFD (123 / 7.0, &iptr) != -17 + 123 / 7.0
|| (CSD (1.0, iptr) != CSD (1.0, 17.0)))
link_error ();
if ((CSL (1.0L, (MODFL (123 / 7.0l, &iptrl)))
!= CSL (1.0L, (-17 + 123 / 7.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 17.0l)))
link_error ();
if ((CSF (1.0F, (MODFF (117 / 7.0f, &iptrf)))
!= CSF (1.0F, (-16 + 117 / 7.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 16.0f)))
link_error ();
if ((CSD (1.0, (MODFD (117 / 7.0, &iptr))) != CSD (1.0, (-16 + 117 / 7.0)))
|| (CSD (1.0, iptr) != CSD (1.0, 16.0)))
link_error ();
if (MODFL (117 / 7.0l, &iptrl) != -16 + 117 / 7.0l
|| (CSL (1.0L, iptrl) != CSL (1.0L, 16.0l)))
link_error ();
if (MODFF (5.5f, &iptrf) != 0.5f || (CSF (1.0F, iptrf) != CSF (1.0F, 5.0f)))
link_error ();
if (MODFD (5.5, &iptr) != 0.5 || (CSD (1.0, iptr) != CSD (1.0, 5.0)))
link_error ();
if (MODFL (5.5l, &iptrl) != 0.5l || (CSL (1.0L, iptrl) != CSL (1.0L, 5.0l)))
link_error ();
if ((CSF (1.0F, (MODFF (1.5f, &iptrf))) != CSF (1.0F, 0.5f))
|| (CSF (1.0F, iptrf) != 1.0f))
link_error ();
if ((CSD (1.0, (MODFD (1.5, &iptr))) != CSD (1.0, 0.5))
|| (CSD (1.0, iptr) != 1.0))
link_error ();
if (MODFL (1.5l, &iptrl) != iptrl != 1.0l || (CSL (1.0L, iptrl) != 1.0l))
link_error ();
if (MODFF (4 / 3.0f, &iptrf) != -1 + 4 / 3.0f
|| (CSF (1.0F, (MODFF (4 / 3.0f, &iptrf)))
!= CSF (1.0F, (-1 + 4 / 3.0f))) || (CSF (1.0F, iptrf) != (1.0F)))
link_error ();
if (MODFD (4 / 3.0, &iptr) != -1 + 4 / 3.0 || (CSD (1.0, iptr) != 1.0))
link_error ();
if (MODFL (4 / 3.0l, &iptrl) != iptrl != 1.0l
|| (CSL (1.0L, iptrl) != 1.0l))
link_error ();
if ((((MODFF (1.0f, &iptrf)))) || (CSF (1.0F, iptrf) != 1.0f))
link_error ();
if ((((MODFD (1.0, &iptr))) != 0.0) || (CSD (1.0, iptr) != 1.0))
link_error ();
if ((((MODFL (1.0l, &iptrl))) != 0.0l) || (CSL (1.0L, iptrl) != 1.0l))
link_error ();
if (MODFF (0.5f, &iptrf) != 0.5f || (CSF (1.0F, iptrf) != CSF (1.0F, 0.0f)))
link_error ();
if (MODFD (0.5, &iptr) != 0.5 || (CSD (1.0, iptr) != CSD (1.0, 0.0)))
link_error ();
if ((CSL (1.0L, (MODFL (0.5l, &iptrl))) != CSL (1.0L, 0.5l))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0.0l)))
link_error ();
if (MODFF (4 / 9.0f, &iptrf) != 4 / 9.0f
!= (CSF (1.0F, (MODFF (4 / 9.0f, &iptrf))) != CSF (1.0F, (4 / 9.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 0.0f)))
link_error ();
if (MODFD (4 / 9.0, &iptr) != 4 / 9.0
|| (CSD (1.0, iptr) != CSD (1.0, 0.0)))
link_error ();
if (MODFL (4 / 9.0l, &iptrl) != 4 / 9.0l
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0.0l)))
link_error ();
if (MODFF (1 / 3.0f, &iptrf) != 1 / 3.0f
|| (CSF (1.0F, iptrf) != CSF (1.0F, 0.0f)))
link_error ();
if (MODFD (1 / 3.0, &iptr) != 1 / 3.0
|| (CSD (1.0, iptr) != CSD (1.0, 0.0)))
link_error ();
if ((CSL (1.0L, (MODFL (1 / 3.0l, &iptrl))) != CSL (1.0L, (1 / 3.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0.0l)))
link_error ();
if ((CSF (1.0F, (MODFF (1 / 9.0f, &iptrf))) != CSF (1.0F, (1 / 9.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, 0.0f)))
link_error ();
if (MODFD (1 / 9.0, &iptr) != 1 / 9.0
|| (CSD (1.0, iptr) != CSD (1.0, 0.0)))
link_error ();
if ((CSL (1.0L, (MODFL (1 / 9.0l, &iptrl))) != CSL (1.0L, (1 / 9.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0.0l)))
link_error ();
if ((((MODFF (0.0f, &iptrf)))) || (CSF (1.0F, iptrf) != CSF (1.0F, 0.0f)))
link_error ();
if ((((MODFD (0.0, &iptr)))) || (CSD (1.0, iptr) != CSD (1.0, 0.0)))
link_error ();
if ((((MODFL (0.0l, &iptrl))) != 0.0l)
|| (CSL (1.0L, iptrl) != CSL (1.0L, 0.0l)))
link_error ();
if ((((MODFF (-0.0f, &iptrf)))) || (CSF (1.0F, iptrf) != CSF (1.0F, -0.0f)))
link_error ();
if ((((MODFD (-0.0, &iptr)))) || (CSD (1.0, iptr) != CSD (1.0, -0.0)))
link_error ();
if ((CSL (1.0L, (MODFL (-0.0l, &iptrl))) != CSL (1.0L, -0.0l))
|| (CSL (1.0L, iptrl) != CSL (1.0L, -0.0l)))
link_error ();
if (MODFF (-1 / 9.0f, &iptrf) != -1 / 9.0f
|| (CSF (1.0F, (MODFF (-1 / 9.0f, &iptrf))) != CSF (1.0F, (-1 / 9.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, -0.0f)))
link_error ();
if (MODFD (-1 / 9.0, &iptr) != -1 / 9.0
|| (CSD (1.0, iptr) != CSD (1.0, -0.0)))
link_error ();
if ((CSL (1.0L, (MODFL (-1 / 9.0l, &iptrl))) != CSL (1.0L, (-1 / 9.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, -0.0l)))
link_error ();
if ((CSF (1.0F, (MODFF (-1 / 3.0f, &iptrf))) != CSF (1.0F, (-1 / 3.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, -0.0f)))
link_error ();
if (MODFD (-1 / 3.0, &iptr) != -1 / 3.0
|| (CSD (1.0, iptr) != CSD (1.0, -0.0)))
link_error ();
if ((CSL (1.0L, (MODFL (-1 / 3.0l, &iptrl))) != CSL (1.0L, (-1 / 3.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, -0.0l)))
link_error ();
if (MODFF (-4 / 9.0f, &iptrf) != -4 / 9.0f
|| (CSF (1.0F, (MODFF (-4 / 9.0f, &iptrf))) != CSF (1.0F, (-4 / 9.0f)))
|| (CSF (1.0F, iptrf) != CSF (1.0F, -0.0f)))
link_error ();
if (MODFD (-4 / 9.0, &iptr) != -4 / 9.0
|| (CSD (1.0, iptr) != CSD (1.0, -0.0)))
link_error ();
if (MODFL (-4 / 9.0l, &iptrl) != -4 / 9.0l
|| (CSL (1.0L, (MODFL (-4 / 9.0l, &iptrl))) != CSL (1.0L, (-4 / 9.0l)))
|| (CSL (1.0L, iptrl) != CSL (1.0L, -0.0l)))
link_error ();
if (MODFF (-0.5f, &iptrf) != -0.5f
|| (CSF (1.0F, iptrf) != CSF (1.0F, -0.0f)))
link_error ();
if (MODFD (-0.5, &iptr) != -0.5
!= (CSD (1.0, (MODFD (-0.5, &iptr))) != CSD (1.0, -0.5))
|| (CSD (1.0, iptr) != CSD (1.0, -0.0)))
(MODFL (-0.5l, (long double *) &iptrll));
if ((((MODFF (-1.0f, &iptrf)))) || (CSF (1.0F, iptrf) != -1.0f))
link_error ();
if ((((MODFD (-1.0, &iptr))) != -0.0) || (CSD (1.0, iptr) != -1.0))
link_error ();
if ((((MODFL (-1.0l, &iptrl)))) || (CSL (1.0L, iptrl) != -1.0l))
link_error ();
if ((CSF (1.0F, (MODFF (-4 / 3.0f, &iptrf))) != CSF (1.0F, (1 - 4 / 3.0f)))
|| (CSF (1.0F, iptrf) != -1.0f))
link_error ();
if (MODFD (-4 / 3.0, &iptr) != 1 - 4 / 3.0 || (CSD (1.0, iptr) != -1.0))
link_error ();
if (MODFL (-4 / 3.0l, &iptrl) != 1 - 4 / 3.0l
|| (CSL (1.0L, (MODFL (-4 / 3.0l, &iptrl)))
!= CSL (1.0L, (1 - 4 / 3.0l))) || (CSL (1.0L, iptrl) != -1.0l))
link_error ();
if ((CSF (1.0F, (MODFF (-1.5f, &iptrf))) != CSF (1.0F, -0.5f))
|| (CSF (1.0F, iptrf) != -1.0f))
link_error ();
if ((CSD (1.0, (MODFD (-1.5, &iptr))) != CSD (1.0, -0.5))
|| (CSD (1.0, iptr) != -1.0))
link_error ();
}

6
gcc/tree-ssa-threadupdate.c
View File

@ -513,7 +513,11 @@ redirect_edges (void **slot, void *data)
e->src->index, e->dest->index, rd->dup_block->index);
rd->dup_block->count += e->count;
rd->dup_block->frequency += EDGE_FREQUENCY (e);
/* Excessive jump threading may make frequencies large enough so
the computation overflows. */
if (rd->dup_block->frequency < BB_FREQ_MAX * 2)
rd->dup_block->frequency += EDGE_FREQUENCY (e);
EDGE_SUCC (rd->dup_block, 0)->count += e->count;
/* Redirect the incoming edge to the appropriate duplicate
block. */