https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92283
Bug ID: 92283
Summary: [10 Regression] 454.calculix miscomparison since
r276645 with -O2 -march=znver2
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rguenth at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
Happens probably also on -march=znver1. The miscomparison looks as follows:
*** Miscompare of hyperviscoplastic.dat; for details see
/home/marxin/Programming/cpu2006/benchspec/CPU2006/454.calculix/run/run_peak_ref_amd64-m64-mine.0002/hyperviscoplastic.dat.mis
0004: 1 4.8405E-02 3.2704E-03 -9.0528E-02
1 4.8406E-02 3.2744E-03 -9.0528E-02
^
0005: 2 4.7540E-02 4.7758E-03 -9.0477E-02
2 4.7541E-02 4.7797E-03 -9.0476E-02
^
0006: 3 5.7701E-02 1.7385E-02 -8.9680E-02
3 5.7701E-02 1.7389E-02 -8.9679E-02
^
0007: 4 5.8515E-02 1.6408E-02 -8.9846E-02
4 5.8515E-02 1.6412E-02 -8.9845E-02
^
0008: 5 4.9013E-02 4.4863E-03 -7.1472E-02
5 4.9013E-02 4.4890E-03 -7.1472E-02
^
0009: 6 4.8327E-02 6.3389E-03 -7.1369E-02
6 4.8327E-02 6.3416E-03 -7.1368E-02
^
0010: 7 5.8090E-02 1.5335E-02 -6.9866E-02
7 5.8091E-02 1.5337E-02 -6.9866E-02
^
0011: 8 5.8660E-02 1.4022E-02 -7.0121E-02
8 5.8661E-02 1.4024E-02 -7.0120E-02
^
0012: 9 4.7972E-02 4.0228E-03 -9.0502E-02
9 4.7973E-02 4.0267E-03 -9.0501E-02
^
0013: 10 5.2460E-02 1.1227E-02 -9.0329E-02
10 5.2461E-02 1.1232E-02 -9.0328E-02
^
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
