airborne12 opened a new pull request, #373:
URL: https://github.com/apache/doris-thirdparty/pull/373
## Summary
Fix incorrect CPU detection for Intel Emerald Rapids processors (e.g., Intel
Xeon Platinum 8575C) where they were misidentified as PRESCOTT (Pentium 4 era)
instead of SAPPHIRERAPIDS.
**Problem:**
- Intel Xeon Platinum 8575C (model 207 = exmodel 12, model 15) was detected
as `CORE=PRESCOTT`
- This caused build failures due to missing FMA/AVX2/AVX512 compiler flags
- Error: `always_inline function '_mm256_fmadd_ps' requires target feature
'fma'`
**Root Cause:**
1. `get_corename()` in `cpuid_x86.c`: case 12 (exmodel 12) only handled
model 6 (Arrow Lake), missing model 15 (Emerald Rapids)
2. Missing `break` statement caused fall-through to case 15 (family 15 =
Pentium 4), returning `CORE_PRESCOTT`
3. `dynamic.c` lacked runtime detection support for exmodel 10-12 newer
Intel processors
**Changes:**
- `cpuid_x86.c`: Add case 15 (Emerald Rapids) to exmodel 12 switch + add
missing break
- `driver/others/dynamic.c`: Add runtime detection for:
- Exmodel 10: Meteor Lake (model 0, 10), Granite Rapids (model 13)
- Exmodel 11: Raptor Lake, Alder Lake N (model 7, 10, 14, 15)
- Exmodel 12: Arrow Lake (model 6), Emerald Rapids (model 15)
## Test plan
- [ ] Verify build succeeds on Intel Xeon Platinum 8575C
- [ ] Verify CPU is detected as SAPPHIRERAPIDS (or appropriate fallback)
- [ ] Verify no regression on other Intel processors
🤖 Generated with [Claude Code](https://claude.ai/code)
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