wasm2js: optimize loops and eqz (#2051)

1 files changed, 12 insertions, 13 deletions

diff --git a/test/wasm2js/i64.2asm.js b/test/wasm2js/i64.2asm.js
index 512f07dd1..30dc5e536 100644
--- a/test/wasm2js/i64.2asm.js
+++ b/test/wasm2js/i64.2asm.js
@@ -371,7 +371,7 @@ function asmFunc(global, env, buffer) {
   x$hi = x$hi | 0;
   var i64toi32_i32$0 = 0;
   i64toi32_i32$0 = x$hi;
-  return (x | i64toi32_i32$0) == (0 | 0) | 0;
+  return !(x | i64toi32_i32$0) | 0;
  }
  
  function $19(x, x$hi, y, y$hi) {
@@ -2990,7 +2990,7 @@ function asmFunc(global, env, buffer) {
              {
               i64toi32_i32$1 = var$1$hi;
               var$3 = var$1;
-              if ((var$3 | 0) == (0 | 0)) {
+              if (!var$3) {
                break label$11
               }
               i64toi32_i32$1 = var$1$hi;
@@ -3010,7 +3010,7 @@ function asmFunc(global, env, buffer) {
                }
               }
               var$4 = $38;
-              if ((var$4 | 0) == (0 | 0)) {
+              if (!var$4) {
                break label$9
               }
               var$2 = Math_clz32(var$4) - Math_clz32(var$2) | 0;
@@ -3057,10 +3057,10 @@ function asmFunc(global, env, buffer) {
            }
            var$3 = $39;
            i64toi32_i32$1 = var$0$hi;
-           if ((var$0 | 0) == (0 | 0)) {
+           if (!var$0) {
             break label$7
            }
-           if ((var$3 | 0) == (0 | 0)) {
+           if (!var$3) {
             break label$6
            }
            var$4 = var$3 + -1 | 0;
@@ -3103,7 +3103,7 @@ function asmFunc(global, env, buffer) {
            return i64toi32_i32$3;
           }
           var$4 = var$3 + -1 | 0;
-          if ((var$4 & var$3) == (0 | 0)) {
+          if (!(var$4 & var$3)) {
            break label$5
           }
           var$2 = (Math_clz32(var$3) + 33 | 0) - Math_clz32(var$2) | 0;
@@ -3231,7 +3231,7 @@ function asmFunc(global, env, buffer) {
        }
        var$8 = i64toi32_i32$4;
        var$8$hi = i64toi32_i32$5;
-       label$15 : do {
+       label$15 : while (1) {
         i64toi32_i32$5 = var$5$hi;
         i64toi32_i32$2 = var$5;
         i64toi32_i32$1 = 0;
@@ -3360,7 +3360,7 @@ function asmFunc(global, env, buffer) {
          continue label$15
         }
         break label$15;
-       } while (1);
+       };
        break label$13;
       }
      }
@@ -3409,7 +3409,7 @@ function asmFunc(global, env, buffer) {
  function __wasm_ctz_i64(var$0, var$0$hi) {
   var i64toi32_i32$0 = 0, i64toi32_i32$3 = 0, i64toi32_i32$5 = 0, i64toi32_i32$4 = 0, i64toi32_i32$2 = 0, i64toi32_i32$1 = 0, $10_1 = 0, $5$hi = 0, $8$hi = 0;
   i64toi32_i32$0 = var$0$hi;
-  if (((var$0 | i64toi32_i32$0) == (0 | 0) | 0) == (0 | 0)) {
+  if (!!(var$0 | i64toi32_i32$0)) {
    {
     i64toi32_i32$0 = var$0$hi;
     i64toi32_i32$2 = var$0;
@@ -3519,10 +3519,10 @@ function asmFunc(global, env, buffer) {
  function __wasm_popcnt_i64(var$0, var$0$hi) {
   var i64toi32_i32$0 = 0, i64toi32_i32$2 = 0, i64toi32_i32$5 = 0, i64toi32_i32$4 = 0, i64toi32_i32$3 = 0, i64toi32_i32$1 = 0, var$1$hi = 0, var$1 = 0, $5_1 = 0, $5$hi = 0, $4_1 = 0, $9$hi = 0;
   label$1 : {
-   label$2 : do {
+   label$2 : while (1) {
     i64toi32_i32$0 = var$1$hi;
     i64toi32_i32$0 = var$0$hi;
-    $4_1 = (var$0 | i64toi32_i32$0) == (0 | 0);
+    $4_1 = !(var$0 | i64toi32_i32$0);
     i64toi32_i32$0 = var$1$hi;
     $5_1 = var$1;
     $5$hi = i64toi32_i32$0;
@@ -3557,8 +3557,7 @@ function asmFunc(global, env, buffer) {
     var$1 = i64toi32_i32$1;
     var$1$hi = i64toi32_i32$4;
     continue label$2;
-    break label$2;
-   } while (1);
+   };
   }
   i64toi32_i32$4 = $5$hi;
   i64toi32_i32$5 = $5_1;