diff --git a/src/alloy/backend/x64/x64_sequences.cc b/src/alloy/backend/x64/x64_sequences.cc
index 9ece83e67..d60404aa1 100644
--- a/src/alloy/backend/x64/x64_sequences.cc
+++ b/src/alloy/backend/x64/x64_sequences.cc
@@ -2351,7 +2351,7 @@ EMITTER(VECTOR_COMPARE_SGE_V128, MATCH(I<OPCODE_VECTOR_COMPARE_SGE, V128<>, V128
         e.vpor(dest, e.xmm0);
         break;
       case FLOAT32_TYPE:
-        e.vcmpgeps(i.dest, i.src1, i.src2);
+        e.vcmpgeps(dest, src1, src2);
         break;
       }
     });
@@ -2545,9 +2545,9 @@ EMITTER(VECTOR_ADD, MATCH(I<OPCODE_VECTOR_ADD, V128<>, V128<>, V128<>>)) {
             if (saturate) {
               // TODO(benvanik): trace DID_SATURATE
               if (is_unsigned) {
-                e.vpaddsb(dest, src1, src2);
-              } else {
                 e.vpaddusb(dest, src1, src2);
+              } else {
+                e.vpaddsb(dest, src1, src2);
               }
             } else {
               e.vpaddb(dest, src1, src2);
@@ -2557,9 +2557,9 @@ EMITTER(VECTOR_ADD, MATCH(I<OPCODE_VECTOR_ADD, V128<>, V128<>, V128<>>)) {
             if (saturate) {
               // TODO(benvanik): trace DID_SATURATE
               if (is_unsigned) {
-                e.vpaddsw(dest, src1, src2);
-              } else {
                 e.vpaddusw(dest, src1, src2);
+              } else {
+                e.vpaddsw(dest, src1, src2);
               }
             } else {
               e.vpaddw(dest, src1, src2);
@@ -2575,7 +2575,6 @@ EMITTER(VECTOR_ADD, MATCH(I<OPCODE_VECTOR_ADD, V128<>, V128<>, V128<>>)) {
                 // Wish there was a vpaddusd...
                 // | A | B | C | D |
                 // |     B |     D |
-                e.db(0xCC);
                 e.vpsllq(e.xmm0, src1, 32);
                 e.vpsllq(e.xmm1, src2, 32);
                 e.vpsrlq(e.xmm0, 32);
@@ -4287,7 +4286,7 @@ EMITTER_OPCODE_TABLE(
 EMITTER(EXTRACT_I8, MATCH(I<OPCODE_EXTRACT, I8<>, V128<>, I8<>>)) {
   static void Emit(X64Emitter& e, const EmitArgType& i) {
     if (i.src2.is_constant) {
-      e.vpextrb(i.dest.reg().cvt64(), i.src1, i.src2.constant());
+      e.vpextrb(i.dest.reg().cvt32(), i.src1, i.src2.constant());
     } else {
       XEASSERTALWAYS();
     }
@@ -4296,7 +4295,7 @@ EMITTER(EXTRACT_I8, MATCH(I<OPCODE_EXTRACT, I8<>, V128<>, I8<>>)) {
 EMITTER(EXTRACT_I16, MATCH(I<OPCODE_EXTRACT, I16<>, V128<>, I8<>>)) {
   static void Emit(X64Emitter& e, const EmitArgType& i) {
     if (i.src2.is_constant) {
-      e.vpextrw(i.dest.reg().cvt64(), i.src1, i.src2.constant());
+      e.vpextrw(i.dest.reg().cvt32(), i.src1, i.src2.constant());
     } else {
       XEASSERTALWAYS();
     }
@@ -4311,7 +4310,7 @@ EMITTER(EXTRACT_I32, MATCH(I<OPCODE_EXTRACT, I32<>, V128<>, I8<>>)) {
       vec128b(15, 14, 13, 12,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0),
     };
     if (i.src2.is_constant) {
-      e.vpextrd(i.dest.reg().cvt64(), i.src1, i.src2.constant());
+      e.vpextrd(i.dest, i.src1, i.src2.constant());
     } else {
       // Get the desired word in xmm0, then extract that.
       // TODO(benvanik): find a better way, this sequence is terrible.
@@ -4322,7 +4321,7 @@ EMITTER(EXTRACT_I32, MATCH(I<OPCODE_EXTRACT, I32<>, V128<>, I8<>>)) {
       e.mov(e.rdx, reinterpret_cast<uint64_t>(extract_table_32));
       e.vmovaps(e.xmm0, e.ptr[e.rdx + e.rax]);
       e.vpshufb(e.xmm0, i.src1, e.xmm0);
-      e.vpextrd(i.dest.reg().cvt32(), e.xmm0, 0);
+      e.vpextrd(i.dest, e.xmm0, 0);
       e.ReloadEDX();
     }
   }