The CpuFeature enum in src/globals.h is almost full, NUMBER_OF_CPU_FEATURES is now 29 (of 32) There is almost no room for another port (to another CPU)
Is it possible to make more room there? Maybe changing the size of the supported_ memember variable at the CpuFeatures class in assembler.h. Another possibility may be perhaps to surround the definitions by platform defines like: // CPU feature flags. enum CpuFeature { #ifdef V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64 // x86 SSE4_1, SSE3, SAHF, AVX, FMA3, BMI1, BMI2, LZCNT, POPCNT, ATOM, #endif #ifdef V8_HOST_ARCH_ARM || V8_HOST_ARCH_ARM64 // ARM VFP3, ARMv7, ARMv8, SUDIV, MLS, UNALIGNED_ACCESSES, MOVW_MOVT_IMMEDIATE_LOADS, VFP32DREGS, NEON, #endif #ifdef V8_HOST_ARCH_MIPS || V8_HOST_ARCH_MIPS64 // MIPS, MIPS64 FPU, FP64FPU, MIPSr1, MIPSr2, MIPSr6, #endif #ifdef V8_HOST_ARCH_ARM64 // ARM64 ALWAYS_ALIGN_CSP, COHERENT_CACHE, #endif #ifdef V8_HOST_ARCH_PPC // PPC FPR_GPR_MOV, LWSYNC, ISELECT, #endif NUMBER_OF_CPU_FEATURES } Also see that there are cpu independent code that uses some of the cpu dependent features: in assembler.cc void AssemblerBase::FlushICache(Isolate* isolate, void* start, size_t size) { if (size == 0) return; if (CpuFeatures::IsSupported(COHERENT_CACHE)) return; // This is only for ARM64???? #if defined(USE_SIMULATOR) Simulator::FlushICache(isolate->simulator_i_cache(), start, size); #else CpuFeatures::FlushICache(start, size); #endif // USE_SIMULATOR } and in code-stubs.h class DoubleToIStub : public PlatformCodeStub { public: DoubleToIStub(Isolate* isolate, Register source, Register destination, int offset, bool is_truncating, bool skip_fastpath = false) : PlatformCodeStub(isolate) { minor_key_ = SourceRegisterBits::encode(source.code()) | DestinationRegisterBits::encode(destination.code()) | OffsetBits::encode(offset) | IsTruncatingBits::encode(is_truncating) | SkipFastPathBits::encode(skip_fastpath) | SSE3Bits::encode(CpuFeatures::IsSupported(SSE3) ? 1 : 0); // Only ia32 and x64 ??? } Any thoughts? -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.