[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 Jeffrey A. Law changed: What|Removed |Added Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #8 from Jeffrey A. Law --- Fixed on the trunk.
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 --- Comment #7 from CVS Commits --- The master branch has been updated by Jeff Law : https://gcc.gnu.org/g:baf3b9b2e5259558ef86bd62398e2ccecd7a4a4c commit r10-7789-gbaf3b9b2e5259558ef86bd62398e2ccecd7a4a4c Author: Jeff Law Date: Sat Apr 18 09:39:18 2020 -0600 Don't let DEBUG_INSNSs change register renaming decisions PR debug/94439 * regrename.c (check_new_reg_p): Ignore DEBUG_INSNs when walking the chain. PR debug/94439 * gcc.dg/torture/pr94439.c: New test.
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 --- Comment #6 from Jeffrey A. Law --- And has likely been broken since the introduction of VTA if I'm reading the code correctly.
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 Jeffrey A. Law changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |law at redhat dot com --- Comment #5 from Jeffrey A. Law --- It looks like things go wrong when walking the regrename chains to find the best renaming possibility.
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 Jeffrey A. Law changed: What|Removed |Added CC||law at redhat dot com --- Comment #4 from Jeffrey A. Law --- I can probably take a stab. It's been a long time since I looked at the scheduler, but there was a time when I knew it reasonably well :-)
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 Jakub Jelinek changed: What|Removed |Added CC||aoliva at gcc dot gnu.org, ||rsandifo at gcc dot gnu.org, ||vmakarov at gcc dot gnu.org --- Comment #3 from Jakub Jelinek --- I'm afraid scheduler -fcompare-debug issues are something I need to give up on.
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439
Jakub Jelinek changed:
What|Removed |Added
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #2 from Jakub Jelinek ---
This diverges during sched2, on the reduced testcase with additional
--param=min-nondebug-insn-uid=1 I see:
-(insn 10076 10075 10055 2 (set (reg:SI 43 r15)
-(mem/c:SI (const:DI (plus:DI (symbol_ref:DI ("cs.0") [flags 0x2]
)
+(insn 10076 10075 221 2 (set (reg:SI 40 r12)
+(mem/c:SI (const:DI (plus:DI (symbol_ref:DI ("cs.0") [flags 0x2]
)
(const_int 24 [0x18]))) [1 cs+24 S4 A64]))
"builtin-complex-1.c":50:3 67 {*movsi_internal}
(nil))
difference between -g0 and -g.
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439
--- Comment #1 from Jakub Jelinek ---
Slightly reduced testcase:
extern void exit (int);
extern void abort (void);
#define COMPARE_BODY(A, B, TYPE, COPYSIGN) \
do { \
TYPE s1 = COPYSIGN ((TYPE) 1.0, A); \
TYPE s2 = COPYSIGN ((TYPE) 1.0, B); \
if (s1 != s2) \
abort (); \
if ((__builtin_isnan (A) != 0) != (__builtin_isnan (B) != 0)) \
abort (); \
if ((A != B) != (__builtin_isnan (A) != 0)) \
abort (); \
} while (0)
void
comparel (long double a, long double b)
{
COMPARE_BODY (a, b, long double, __builtin_copysignl);
}
void
comparecl (_Complex long double a, long double r, long double i)
{
comparel (__real__ a, r);
comparel (__imag__ a, i);
}
#define VERIFY(A, B, TYPE, COMPARE) \
do { \
TYPE a = A; \
TYPE b = B; \
_Complex TYPE cr = __builtin_complex (a, b);\
static _Complex TYPE cs = __builtin_complex (A, B); \
COMPARE (cr, A, B); \
COMPARE (cs, A, B); \
} while (0)
#define ALL_CHECKS(PZ, NZ, NAN, INF, TYPE, COMPARE) \
do { \
VERIFY (NAN, NZ, TYPE, COMPARE);\
VERIFY (INF, NZ, TYPE, COMPARE);\
VERIFY (INF, NAN, TYPE, COMPARE); \
VERIFY (INF, INF, TYPE, COMPARE); \
} while (0)
void
check_long_double (void)
{
ALL_CHECKS (0.0l, -0.0l, __builtin_nanl(""), __builtin_infl(), long double,
comparecl);
}
[Bug debug/94439] [10 Regression] gcc: error: gcc/testsuite/gcc.dg/torture/builtin-complex-1.c: ‘-fcompare-debug’ failure since r10-3499-g0ce77f463d1d150e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94439 Martin Liška changed: What|Removed |Added CC||richard.sandiford at linaro dot or ||g Known to fail||10.0 Summary|gcc: error: |[10 Regression] gcc: error: |gcc/testsuite/gcc.dg/tortur |gcc/testsuite/gcc.dg/tortur |e/builtin-complex-1.c: |e/builtin-complex-1.c: |‘-fcompare-debug’ failure |‘-fcompare-debug’ failure |since |since |r10-3499-g0ce77f463d1d150e |r10-3499-g0ce77f463d1d150e Known to work||9.3.0 Last reconfirmed||2020-4-1 Target Milestone|--- |10.0
