--- a/js/src/jit-test/tests/wasm/regress/long-select.js
+++ b/js/src/jit-test/tests/wasm/regress/long-select.js
@@ -19,8 +19,24 @@ wasmFullPassI64(`
 (module
   (func (result i64)
     i64.const 0x2800000033
     i64.const 0x9900000044
     i64.const 0x1000000013
     i64.const 0x1000000012
     i64.lt_s
     select) (export "run" 0))`, createI64("0x9900000044"));
+
+wasmFullPassI64(`
+(module
+    (func (export "run") (result i64) (param f32)
+        i64.const 0x13100000001
+        i64.const 0x23370000002
+        i64.const 0x34480000003
+        i32.const 1
+        select
+        i32.const 1
+        select
+        i64.const 0x45590000004
+        i32.const 1
+        select
+    )
+)`, createI64("0x13100000001"));

--- a/js/src/wasm/WasmBaselineCompile.cpp
+++ b/js/src/wasm/WasmBaselineCompile.cpp
@@ -6428,16 +6428,17 @@ BaseCompiler::emitSelect()
         masm.bind(&done);
 
         Label trueValue;
         RegI64 r0, r1;
         pop2xI64(&r0, &r1);
         masm.branch32(Assembler::Equal, tmp, Imm32(0), &trueValue);
         moveI64(r1, r0);
         masm.bind(&trueValue);
+        freeI32(tmp);
         freeI64(r1);
         pushI64(r0);
 #else
         RegI64 r0, r1;
         pop2xI64(&r0, &r1);
         emitBranchPerform(&b);
         moveI64(r1, r0);
         masm.bind(&done);