Add IBM POWER8 (ppc64le) support with VSX SIMD I2_S kernels#394

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Scottcjn wants to merge 7 commits intomicrosoft:mainfrom

Commits on Jan 30, 2026

feat: Add POWER8 ppc64le support with scalar I2_S kernels

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claude
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feat(power8): add VSX SIMD kernels for I2_S dot products - 10x speedup

Scottcjn
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claude
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perf(power8): add L3 resident dcbt prefetch for weight tensors

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claude
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docs: add POWER8 benchmarks and build instructions to README

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claude
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Commits on Jan 31, 2026

feat(g5): add Power Mac G5 big-endian support with GGUF byte-swap

Scott
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claude
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Commits on Feb 1, 2026

perf(g5): add AltiVec SIMD kernels via VSX/AltiVec compatibility macros

Scott
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claude
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fix(g5): use -Os (not -O3), add always_inline for Mach-O VRsave overhead

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