diff options
Diffstat (limited to 'guix/cpu.scm')
| -rw-r--r-- | guix/cpu.scm | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/guix/cpu.scm b/guix/cpu.scm index 30cd860a19..29ad883584 100644 --- a/guix/cpu.scm +++ b/guix/cpu.scm @@ -32,7 +32,8 @@ cpu-model cpu-flags - cpu->gcc-architecture)) + cpu->gcc-architecture + gcc-architecture->micro-architecture-level)) ;;; Commentary: ;;; @@ -283,3 +284,24 @@ correspond roughly to CPU, a record as returned by 'current-cpu'." (architecture ;; TODO: More architectures architecture))) + +(define (gcc-architecture->micro-architecture-level gcc-architecture) + "Return a matching psABI micro-architecture, allowing optimizations for x86_64 +CPUs for compilers which don't allow for more focused optimizing." + ;; Matching gcc-architectures isn't an easy task, with the rule-of-thumb being + ;; 'Haswell and higher' qualify for x86_64-v3. + ;; https://gitlab.com/x86-psABIs/x86-64-ABI/-/blob/master/x86-64-ABI/low-level-sys-info.tex + (match gcc-architecture + ((or "grandridge" "graniterapids" "sierraforest" "tigerlake" + "sapphirerapids" "cooperlake" "icelake-server" "icelake-client" + "cannonlake" "knm" "knl" "skylake-avx512" "alderlake" "skylake" + "broadwell" "haswell" + "znver4" "znver3" "znver2" "znver1" "bdver4") + "x86_64-v3") + ((or "sandybridge" "tremont" "goldmont-plus" "goldmont" "silvermont" + "nehalem" "bonnell" "core2" + "btver2" "athalon" "k8-sse3" "k8" "bdver3" "bdver2" "bdver1" "btver1" + "amdfam10" + "lujiazui" "x86-64") + "x86_64-v1") + (_ gcc-architecture))) |