[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 Andrew Pinski changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org Status|NEW |ASSIGNED Target Milestone|--- |12.0
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 --- Comment #8 from Andrew Pinski --- I will go look into this after a nap.
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 --- Comment #7 from Peter Bergner --- (In reply to Andrew Pinski from comment #5) > Hmm, I fixed one like this yesterday. Are you sure it is not fixed? Yes, I built with a trunk from this morning and just verified it still ICEs with a new checkout (6f4ac4f81f89caac7e74127ed2e6db6bbb3d7426).
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 --- Comment #6 from Andrew Pinski --- https://gcc.gnu.org/pipermail/gcc-cvs/2021-November/356905.html
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 --- Comment #5 from Andrew Pinski --- Hmm, I fixed one like this yesterday. Are you sure it is not fixed?
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 Peter Bergner changed: What|Removed |Added CC||rguenth at gcc dot gnu.org --- Comment #4 from Peter Bergner --- My bisect flagged the following commit as causing the ICE: commit f98f373dd822b35c52356b753d528924e9f89678 Commit: Richard Biener CommitDate: Tue Nov 16 11:31:05 2021 +0100 tree-optimization/102880 - make PHI-OPT recognize more CFGs This allows extra edges into the middle BB for the PHI-OPT transforms using replace_phi_edge_with_variable that do not end up moving stmts from that middle BB. This avoids regressing gcc.dg/tree-ssa/ssa-hoist-4.c with the actual fix for PR102880 where CFG cleanup has the choice to remove two forwarders and picks "the wrong" leading to
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 --- Comment #3 from Peter Bergner --- A not too old trunk build didn't ICE, so this looks new. I'll bisect it to find the bad commit.
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317
Peter Bergner changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed||2021-11-18
Keywords||ice-on-valid-code
--- Comment #2 from Peter Bergner ---
Confirmed. Here's a creduced test case. This fails even with -O1 -mcpu=power8:
bergner@pike:~/gcc/BUGS/PR103317$ cat bug.i
int a, b;
char c;
void
d (void)
{
char e = c;
if (b)
if (c < 16 - 11)
e = 16 - 11;
if (e > 8)
e = 8;
a = e;
}
bergner@pike:~/gcc/BUGS/PR103317$ gcc -S -O1 -mcpu=power8 bug.i
bug.i: In function ‘d’:
bug.i:13:1: error: definition in block 3 does not dominate use in block 2
13 | }
| ^
for SSA_NAME: _2 in statement:
e_5 = PHI <_2(2), _4(3)>
PHI argument
_2
for PHI node
e_5 = PHI <_2(2), _4(3)>
during GIMPLE pass: phiopt
bug.i:13:1: internal compiler error: verify_ssa failed
0x11989b73 verify_ssa(bool, bool)
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 Michael Meissner changed: What|Removed |Added Priority|P2 |P1
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 --- Comment #1 from Peter Bergner --- I'll try and creduce the test case.
[Bug tree-optimization/103317] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317 Michael Meissner changed: What|Removed |Added Severity|normal |major Priority|P3 |P2
