asm: follow up on DSL nits (#10946)

Some final review comments went unaddressed in #10855 that this change
resolve, primarily using `LIG` for non-vector definitions. I was going
to add `.wig()` everywhere but, after thinking about it, it _is_ the
default value for `vex()` and leaving it out reduces the amount of
information one has to parse. This also cleans up a few extra lines I
saw lying around.

Author: abrown

cranelift/assembler-x64/meta/src/instructions/avg.rs

@@ -10,7 +10,5 @@ pub fn list() -> Vec<Inst> {
         // AVX versions
         inst("vpavgb", fmt("B", [w(xmm1), r(xmm2), r(xmm_m128)]), vex(L128)._66()._0f().op(0xE0), _64b | compat | avx),
         inst("vpavgw", fmt("B", [w(xmm1), r(xmm2), r(xmm_m128)]), vex(L128)._66()._0f().op(0xE3), _64b | compat | avx),
-
-
     ]
 }

cranelift/assembler-x64/meta/src/instructions/div.rs

@@ -1,5 +1,5 @@
-use crate::dsl::{Feature::*, Inst, Location::*, VexLength::*, align};
-use crate::dsl::{fmt, implicit, inst, r, rex, rw, vex};
+use crate::dsl::{Feature::*, Inst, Location::*, VexLength::*};
+use crate::dsl::{align, fmt, implicit, inst, r, rex, rw, vex};
 
 #[rustfmt::skip] // Keeps instructions on a single line.
 pub fn list() -> Vec<Inst> {
@@ -19,7 +19,7 @@ pub fn list() -> Vec<Inst> {
         inst("divsd", fmt("A", [rw(xmm1), r(xmm_m64)]), rex([0xF2, 0xF, 0x5E]).r(), _64b | compat | sse2),
         inst("vdivps", fmt("B", [rw(xmm1), r(xmm2), r(xmm_m128)]), vex(L128)._0f().op(0x5E).r(), _64b | compat | avx),
         inst("vdivpd", fmt("B", [rw(xmm1), r(xmm2), r(xmm_m128)]), vex(L128)._66()._0f().op(0x5E).r(), _64b | compat | avx),
-        inst("vdivss", fmt("B", [rw(xmm1), r(xmm2), r(xmm_m32)]), vex(L128)._f3()._0f().op(0x5E).r(), _64b | compat | avx),
-        inst("vdivsd", fmt("B", [rw(xmm1), r(xmm2), r(xmm_m64)]), vex(L128)._f2()._0f().op(0x5E).r(), _64b | compat | avx),
+        inst("vdivss", fmt("B", [rw(xmm1), r(xmm2), r(xmm_m32)]), vex(LIG)._f3()._0f().op(0x5E).r(), _64b | compat | avx),
+        inst("vdivsd", fmt("B", [rw(xmm1), r(xmm2), r(xmm_m64)]), vex(LIG)._f2()._0f().op(0x5E).r(), _64b | compat | avx),
     ]
 }

cranelift/assembler-x64/meta/src/instructions/round.rs

@@ -14,6 +14,5 @@ pub fn list() -> Vec<Inst> {
         inst("vroundps", fmt("RMI", [w(xmm1), r(xmm_m128), r(imm8)]), vex(L128)._66()._0f3a().ib().op(0x08), _64b | compat | avx),
         inst("vroundsd", fmt("RVMI", [w(xmm1), r(xmm2), r(xmm_m64), r(imm8)]), vex(LIG)._66()._0f3a().ib().op(0x0b), _64b | compat | avx),
         inst("vroundss", fmt("RVMI", [w(xmm1), r(xmm2), r(xmm_m32), r(imm8)]), vex(LIG)._66()._0f3a().ib().op(0x0a), _64b | compat | avx),
-
-        ]
+   ]
 }