From 2a66b40267db6ebcea0cd36a7111abcf85af876f Mon Sep 17 00:00:00 2001 From: RedBlackAka Date: Wed, 20 May 2026 19:11:09 +0200 Subject: [common/cpu_detect] Remove SSE/SSE2/FMA4/AVX_VNNI detection (#3979) Removes Eden's own feature detection for SSE, SSE2, FMA4 and AVX_VNNI, in order to clean up code and make the function slightly lighter. They are all unused and I have specific reasons for their removal: - SSE/SSE2 are always true for x64 - FMA4 is a deprecated AMD exclusive extension, replaced by the regular FMA and was logged here as "FMA" for no reason - AVX_VNNI simply does not seem applicable for Eden (but can still be checked for through Xbyak's feature detection if necessary) Co-authored-by: RedBlackAka <140876408+RedBlackAka@users.noreply.github.com> Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3979 Reviewed-by: Lizzie Reviewed-by: crueter Reviewed-by: MaranBr --- src/common/x64/cpu_detect.cpp | 6 ------ 1 file changed, 6 deletions(-) (limited to 'src/common/x64/cpu_detect.cpp') diff --git a/src/common/x64/cpu_detect.cpp b/src/common/x64/cpu_detect.cpp index 4cc42ccbd5..d613954eb5 100644 --- a/src/common/x64/cpu_detect.cpp +++ b/src/common/x64/cpu_detect.cpp @@ -106,8 +106,6 @@ static CPUCaps Detect() { // Detect family and other miscellaneous features if (max_std_fn >= 1) { __cpuid(cpu_id, 0x00000001); - caps.sse = Common::Bit<25>(cpu_id[3]); - caps.sse2 = Common::Bit<26>(cpu_id[3]); caps.sse3 = Common::Bit<0>(cpu_id[2]); caps.pclmulqdq = Common::Bit<1>(cpu_id[2]); caps.ssse3 = Common::Bit<9>(cpu_id[2]); @@ -150,9 +148,6 @@ static CPUCaps Detect() { caps.waitpkg = Common::Bit<5>(cpu_id[2]); caps.gfni = Common::Bit<8>(cpu_id[2]); - - __cpuidex(cpu_id, 0x00000007, 0x00000001); - caps.avx_vnni = caps.avx && Common::Bit<4>(cpu_id[0]); } } @@ -170,7 +165,6 @@ static CPUCaps Detect() { // Check for more features __cpuid(cpu_id, 0x80000001); caps.lzcnt = Common::Bit<5>(cpu_id[2]); - caps.fma4 = Common::Bit<16>(cpu_id[2]); caps.monitorx = Common::Bit<29>(cpu_id[2]); } -- cgit v1.2.3