Jit64: mtfsfx - Optimized masking

The masking logic can be eliminated when the mask is known to be all
ones. This case is very common.

Before:
66 48 0F 7E F0       movq        rax,xmm6
8B 55 5C             mov         edx,dword ptr [rbp+5Ch]
83 E0 FF             and         eax,0FFFFFFFFh
83 E2 00             and         edx,0
0B C2                or          eax,edx
89 45 5C             mov         dword ptr [rbp+5Ch],eax
48 8D 15 C3 3C FE 01 lea         rdx,[19520020h]
83 E0 07             and         eax,7
0F AE 14 82          ldmxcsr     dword ptr [rdx+rax*4]

After:
66 48 0F 7E F0       movq        rax,xmm6
89 45 5C             mov         dword ptr [rbp+5Ch],eax
48 8D 15 2A D1 FD 01 lea         rdx,[19440000h]
83 E0 07             and         eax,7
0F AE 14 82          ldmxcsr     dword ptr [rdx+rax*4]

0 files changed, 0 insertions, 0 deletions