[LoongArch] SPEC2017/SPEC2006 fp tests failed with "-Ofast -march=la664" #186328
Description
@SixWeining @heiher @wangleiat
Tested OS: Debian sid / Loongnix 25.1 rc1
Tested CPUs: Loongson 3A6000 / 3B6000
Tested LLVM versions: 23.0.0 git (main branch) / 22.1.0
Most SPEC2017 fp tests and some SPEC2006 fp tests failed during the runtime with the optimization setting "-Ofast -march=la664" or "-O3 -ffast-math -march=la664". With "-O3 -march=la664" or "-Ofast -march=la464" or "-O3 -ffast-math -march=la464" it is OK for all these fp tests.
Test results with "-Ofast -march=la664" or "-O3 -ffast-math -march=la664" for test and train sizes:
SPEC2017 fp tests:
Test Size_failed Error_message
507.cactuBSSN_r test Miscompare
508.namd_r test copy 0 non-zero return code (exit code=246, signal=0)
511.povray_r test Miscompare
521.wrf_r test Miscompare
526.blender_r test Miscompare
527.cam4_r test copy 0 non-zero return code (exit code=139, signal=0)
544.nab_r test Miscompare
549.fotonik3d_r test Miscompare
554.roms_r test Miscompare
607.cactuBSSN_s test Miscompare
621.wrf_s test Miscompare
627.cam4_s test copy 0 non-zero return code (exit code=139, signal=0)
628.pop2_s train copy 0 non-zero return code (exit code=233, signal=0)
644.nab_s test Miscompare
649.fotonik3d_s test Miscompare
654.roms_s test Miscompare
SPEC2006 fp tests:
Test Size_failed Error_message
416.gamess test Miscompare
435.gromacs test (freezing)
444.namd test copy 0 non-zero return code (exit code=118, signal=0)
447.dealII test Miscompare
453.povray test Miscompare
459.GemsFDTD test Miscompare
465.tonto test Miscompare
Sample config and xml files for LLVM 23.0.0 git:
SPEC2017:
my_llvmgit_test_spec2017.cfg.txt (remove the ".txt" suffix), llvm-git.xml
SPEC2006:
my_llvmgit_spec2006.cfg.txt (remove the ".txt" suffix), llvm_git_06.xml