VFNMSUBSS
FMA4 FMA4 x86_64
VFNMSUBSS is an instruction of the x86_64 architecture (x86 / x86-64 (covers 16/32/64-bit modes)), category FMA4. This page lists its 3 encoding forms, distinguished by opcode byte: 7E.
Each form below links to its full decode: the operand roles and where each one is encoded in the instruction, the flag and register effects, and any micro-op sequence authored for it.
X86_VFNMSUBSS_X86_LEGACY_ONEBYTE_7E_567375
xmm[31:0], xmm[31:0], xmm[31:0]/m32, xmm[31:0]
X86_VFNMSUBSS_X86_LEGACY_ONEBYTE_7E_911531
xmm[31:0], xmm[31:0], xmm[31:0], xmm[31:0]/m32
XED_VFNMSUBSS_X86_LEGACY_ONEBYTE_7E_901256
REG0=XMM_R():w:dq:f32 REG1=XMM_N():r:d:f32 MEM0:r:d:f32 REG2=XMM_SE():r:d:f32 REG0=XMM_R():w:dq:f32 REG1=XMM_N():r:d:f32 REG2=XMM_B():r:d:f32 REG3=XMM_SE():r:d:f32 REG0=XMM_R():w:dq:f32 REG1=XMM_N():r:d:f32 REG2=XMM_SE():r:d:f32 MEM0:r:d:f32 REG0=XMM_R():w:dq:f32 REG1=XMM_N():r:d:f32 REG2=XMM_SE():r:d:f32 REG3=XMM_B():r:d:f32