Add extend-add-pairwise instructions x64

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

@@ -568,6 +568,7 @@ pub enum SseOpcode {
     Pinsrb,
     Pinsrw,
     Pinsrd,
+    Pmaddubsw,
     Pmaddwd,
     Pmaxsb,
     Pmaxsw,
@@ -746,6 +747,7 @@ impl SseOpcode {
             | SseOpcode::Pcmpgtd
             | SseOpcode::Pextrw
             | SseOpcode::Pinsrw
+            | SseOpcode::Pmaddubsw
             | SseOpcode::Pmaddwd
             | SseOpcode::Pmaxsw
             | SseOpcode::Pmaxub
@@ -944,6 +946,7 @@ impl fmt::Debug for SseOpcode {
             SseOpcode::Pinsrb => "pinsrb",
             SseOpcode::Pinsrw => "pinsrw",
             SseOpcode::Pinsrd => "pinsrd",
+            SseOpcode::Pmaddubsw => "pmaddubsw",
             SseOpcode::Pmaddwd => "pmaddwd",
             SseOpcode::Pmaxsb => "pmaxsb",
             SseOpcode::Pmaxsw => "pmaxsw",

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

@@ -1483,6 +1483,7 @@ pub(crate) fn emit(
                 SseOpcode::Paddsw => (LegacyPrefixes::_66, 0x0FED, 2),
                 SseOpcode::Paddusb => (LegacyPrefixes::_66, 0x0FDC, 2),
                 SseOpcode::Paddusw => (LegacyPrefixes::_66, 0x0FDD, 2),
+                SseOpcode::Pmaddubsw => (LegacyPrefixes::_66, 0x0F3804, 3),
                 SseOpcode::Pand => (LegacyPrefixes::_66, 0x0FDB, 2),
                 SseOpcode::Pandn => (LegacyPrefixes::_66, 0x0FDF, 2),
                 SseOpcode::Pavgb => (LegacyPrefixes::_66, 0x0FE0, 2),