[machinst x64]: port CLIF tests related to comparison and lane operations

cranelift/filetests/filetests/isa/x64/simd-comparison-legalize.clif

@@ -0,0 +1,39 @@
+test compile
+set enable_simd
+target x86_64 skylake
+feature "experimental_x64"
+
+function %icmp_ne_32x4(i32x4, i32x4) -> b32x4 {
+block0(v0: i32x4, v1: i32x4):
+    v2 = icmp ne v0, v1
+    return v2
+}
+; check:  pcmpeqd %xmm1, %xmm0
+; nextln: pcmpeqd %xmm1, %xmm1
+; nextln: pxor    %xmm1, %xmm0
+
+function %icmp_ugt_i32x4(i32x4, i32x4) -> b32x4 {
+block0(v0: i32x4, v1: i32x4):
+    v2 = icmp ugt v0, v1
+    return v2
+}
+; check:  pmaxud  %xmm1, %xmm0
+; nextln: pcmpeqd %xmm1, %xmm0
+; nextln: pcmpeqd %xmm1, %xmm1
+; nextln: pxor    %xmm1, %xmm0
+
+function %icmp_sge_i16x8(i16x8, i16x8) -> b16x8 {
+block0(v0: i16x8, v1: i16x8):
+    v2 = icmp sge v0, v1
+    return v2
+}
+; check:  pminsw  %xmm1, %xmm0
+; nextln: pcmpeqw %xmm1, %xmm0
+
+function %icmp_uge_i8x16(i8x16, i8x16) -> b8x16 {
+block0(v0: i8x16, v1: i8x16):
+    v2 = icmp uge v0, v1
+    return v2
+}
+; check:  pminub  %xmm1, %xmm0
+; nextln: pcmpeqb %xmm1, %xmm0