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Fixes JCSDA/spack-stack#2188 for release/2.2: on AVX-512 targets, gcc ≥ 12 vectorises FMS's masked diag averaging loop as an unmasked FMA plus blend (GCC Bug 128221), so FPE-trapping (debug) applications intermittently stop in diag_send_data. This adds -fno-tree-loop-if-convert for gcc, alongside the existing oneAPI -fp-speculation=safe.
This was referenced Nov 4, 2026
climbfuji
marked this pull request as ready for review
November 4, 2026 20:59
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Description
PLACEHOLDER FOR NOW
Merge
release/2.2intospack-stack-dev.Changes:
Testing
Issues
Working toward JCSDA/spack-stack#2177