Implements f64x2.convert_low_i32x4_u for x64

cranelift/codegen/src/isa/x64/inst/args.rs

@@ -635,6 +635,7 @@ pub enum SseOpcode {
     Subsd,
     Ucomiss,
     Ucomisd,
+    Unpcklps,
     Xorps,
     Xorpd,
 }
@@ -675,6 +676,7 @@ impl SseOpcode {
             | SseOpcode::Subps
             | SseOpcode::Subss
             | SseOpcode::Ucomiss
+            | SseOpcode::Unpcklps
             | SseOpcode::Xorps => SSE,
 
             SseOpcode::Addpd
@@ -993,6 +995,7 @@ impl fmt::Debug for SseOpcode {
             SseOpcode::Subsd => "subsd",
             SseOpcode::Ucomiss => "ucomiss",
             SseOpcode::Ucomisd => "ucomisd",
+            SseOpcode::Unpcklps => "unpcklps",
             SseOpcode::Xorps => "xorps",
             SseOpcode::Xorpd => "xorpd",
         };

cranelift/codegen/src/isa/x64/inst/emit.rs

@@ -1529,6 +1529,7 @@ pub(crate) fn emit(
                 SseOpcode::Subpd => (LegacyPrefixes::_66, 0x0F5C, 2),
                 SseOpcode::Subss => (LegacyPrefixes::_F3, 0x0F5C, 2),
                 SseOpcode::Subsd => (LegacyPrefixes::_F2, 0x0F5C, 2),
+                SseOpcode::Unpcklps => (LegacyPrefixes::None, 0x0F14, 2),
                 SseOpcode::Xorps => (LegacyPrefixes::None, 0x0F57, 2),
                 SseOpcode::Xorpd => (LegacyPrefixes::_66, 0x0F57, 2),
                 _ => unimplemented!("Opcode {:?} not implemented", op),

cranelift/codegen/src/isa/x64/inst/emit_tests.rs

@@ -3717,6 +3717,12 @@ fn test_x64_emit() {
         "punpcklbw %xmm1, %xmm8",
     ));
 
+    insns.push((
+        Inst::xmm_rm_r(SseOpcode::Unpcklps, RegMem::reg(xmm11), w_xmm2),
+        "410F14D3",
+        "unpcklps %xmm11, %xmm2",
+    ));
+
     // ========================================================
     // XMM_RM_R: Integer Conversion
     insns.push((