wasm2js: start to optionally optimize the JS (#2046)

Removes redundant | 0s and similar things. (Apparently closure compiler doesn't do that, so makes sense to do here.)

1 files changed, 75 insertions, 75 deletions

diff --git a/test/wasm2js/func.2asm.js b/test/wasm2js/func.2asm.js
index 85a00b1f8..e6ac90b31 100644
--- a/test/wasm2js/func.2asm.js
+++ b/test/wasm2js/func.2asm.js
@@ -433,16 +433,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = i64toi32_i32$0;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $7 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $7 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$2 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $7 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$2 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($7 | 0);
@@ -463,16 +463,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = i64toi32_i32$0;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $7 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $7 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$2 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $7 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$2 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($7 | 0);
@@ -497,16 +497,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = $1;
   i64toi32_i32$1 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
-    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4;
     $21 = 0;
    }
   } else {
    {
-    i64toi32_i32$1 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$2 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$0 << i64toi32_i32$4 | 0) | 0;
-    $21 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    i64toi32_i32$1 = (1 << i64toi32_i32$4) - 1 & i64toi32_i32$2 >>> 32 - i64toi32_i32$4 | i64toi32_i32$0 << i64toi32_i32$4;
+    $21 = i64toi32_i32$2 << i64toi32_i32$4;
    }
   }
   $9$hi = i64toi32_i32$1;
@@ -514,8 +514,8 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$0 = $6;
   i64toi32_i32$2 = $9$hi;
   i64toi32_i32$3 = $21;
-  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2 | 0;
-  $10 = i64toi32_i32$0 | i64toi32_i32$3 | 0;
+  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2;
+  $10 = i64toi32_i32$0 | i64toi32_i32$3;
   $10$hi = i64toi32_i32$2;
   i64toi32_i32$2 = 0;
   $12 = $2_1;
@@ -524,16 +524,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$1 = $3;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4;
     $22 = 0;
    }
   } else {
    {
-    i64toi32_i32$0 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$1 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$2 << i64toi32_i32$4 | 0) | 0;
-    $22 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
+    i64toi32_i32$0 = (1 << i64toi32_i32$4) - 1 & i64toi32_i32$1 >>> 32 - i64toi32_i32$4 | i64toi32_i32$2 << i64toi32_i32$4;
+    $22 = i64toi32_i32$1 << i64toi32_i32$4;
    }
   }
   $15$hi = i64toi32_i32$0;
@@ -541,8 +541,8 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = $12;
   i64toi32_i32$1 = $15$hi;
   i64toi32_i32$3 = $22;
-  i64toi32_i32$1 = i64toi32_i32$0 | i64toi32_i32$1 | 0;
-  $16 = i64toi32_i32$2 | i64toi32_i32$3 | 0;
+  i64toi32_i32$1 = i64toi32_i32$0 | i64toi32_i32$1;
+  $16 = i64toi32_i32$2 | i64toi32_i32$3;
   $16$hi = i64toi32_i32$1;
   i64toi32_i32$1 = $10$hi;
   i64toi32_i32$2 = $16$hi;
@@ -553,16 +553,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$0 = i64toi32_i32$2;
   i64toi32_i32$2 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$2 = 0;
-    $23_1 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $23_1 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$2 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $23_1 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$0 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$2 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $23_1 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$0 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($23_1 | 0);
@@ -589,16 +589,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = $1;
   i64toi32_i32$1 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
-    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4;
     $21 = 0;
    }
   } else {
    {
-    i64toi32_i32$1 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$2 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$0 << i64toi32_i32$4 | 0) | 0;
-    $21 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    i64toi32_i32$1 = (1 << i64toi32_i32$4) - 1 & i64toi32_i32$2 >>> 32 - i64toi32_i32$4 | i64toi32_i32$0 << i64toi32_i32$4;
+    $21 = i64toi32_i32$2 << i64toi32_i32$4;
    }
   }
   $9$hi = i64toi32_i32$1;
@@ -606,8 +606,8 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$0 = $6;
   i64toi32_i32$2 = $9$hi;
   i64toi32_i32$3 = $21;
-  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2 | 0;
-  $10 = i64toi32_i32$0 | i64toi32_i32$3 | 0;
+  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2;
+  $10 = i64toi32_i32$0 | i64toi32_i32$3;
   $10$hi = i64toi32_i32$2;
   i64toi32_i32$2 = 0;
   $12 = $2_1;
@@ -616,16 +616,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$1 = $3;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4;
     $22 = 0;
    }
   } else {
    {
-    i64toi32_i32$0 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$1 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$2 << i64toi32_i32$4 | 0) | 0;
-    $22 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
+    i64toi32_i32$0 = (1 << i64toi32_i32$4) - 1 & i64toi32_i32$1 >>> 32 - i64toi32_i32$4 | i64toi32_i32$2 << i64toi32_i32$4;
+    $22 = i64toi32_i32$1 << i64toi32_i32$4;
    }
   }
   $15$hi = i64toi32_i32$0;
@@ -633,8 +633,8 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = $12;
   i64toi32_i32$1 = $15$hi;
   i64toi32_i32$3 = $22;
-  i64toi32_i32$1 = i64toi32_i32$0 | i64toi32_i32$1 | 0;
-  $16 = i64toi32_i32$2 | i64toi32_i32$3 | 0;
+  i64toi32_i32$1 = i64toi32_i32$0 | i64toi32_i32$1;
+  $16 = i64toi32_i32$2 | i64toi32_i32$3;
   $16$hi = i64toi32_i32$1;
   i64toi32_i32$1 = $10$hi;
   i64toi32_i32$2 = $16$hi;
@@ -645,16 +645,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$0 = i64toi32_i32$2;
   i64toi32_i32$2 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$2 = 0;
-    $23_1 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $23_1 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$2 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $23_1 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$0 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$2 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $23_1 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$0 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($23_1 | 0);
@@ -686,16 +686,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = $3;
   i64toi32_i32$1 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
-    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4;
     $17 = 0;
    }
   } else {
    {
-    i64toi32_i32$1 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$2 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$0 << i64toi32_i32$4 | 0) | 0;
-    $17 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    i64toi32_i32$1 = (1 << i64toi32_i32$4) - 1 & i64toi32_i32$2 >>> 32 - i64toi32_i32$4 | i64toi32_i32$0 << i64toi32_i32$4;
+    $17 = i64toi32_i32$2 << i64toi32_i32$4;
    }
   }
   $14$hi = i64toi32_i32$1;
@@ -703,8 +703,8 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$0 = $11;
   i64toi32_i32$2 = $14$hi;
   i64toi32_i32$3 = $17;
-  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2 | 0;
-  return +(+$40(Math_fround($8), $9 | 0, i64toi32_i32$0 | i64toi32_i32$3 | 0 | 0, i64toi32_i32$2 | 0, $4 | 0, +$5, $6 | 0));
+  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2;
+  return +(+$40(Math_fround($8), $9 | 0, i64toi32_i32$0 | i64toi32_i32$3, i64toi32_i32$2 | 0, $4 | 0, +$5, $6 | 0));
  }
  
  function legalstub$44() {
@@ -716,16 +716,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = i64toi32_i32$0;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $7 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $7 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$2 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $7 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$2 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($7 | 0);
@@ -746,16 +746,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = i64toi32_i32$0;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $7 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $7 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$2 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $7 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$2 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($7 | 0);
@@ -776,16 +776,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = i64toi32_i32$0;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $7 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $7 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$2 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $7 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$2 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($7 | 0);
@@ -806,16 +806,16 @@ function asmFunc(global, env, buffer) {
   i64toi32_i32$2 = i64toi32_i32$0;
   i64toi32_i32$0 = 0;
   i64toi32_i32$3 = 32;
-  i64toi32_i32$4 = i64toi32_i32$3 & 31 | 0;
-  if (32 >>> 0 <= (i64toi32_i32$3 & 63 | 0) >>> 0) {
+  i64toi32_i32$4 = i64toi32_i32$3 & 31;
+  if (32 >>> 0 <= (i64toi32_i32$3 & 63) >>> 0) {
    {
     i64toi32_i32$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
+    $7 = i64toi32_i32$1 >>> i64toi32_i32$4;
    }
   } else {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-    $7 = (((1 << i64toi32_i32$4 | 0) - 1 | 0) & i64toi32_i32$1 | 0) << (32 - i64toi32_i32$4 | 0) | 0 | (i64toi32_i32$2 >>> i64toi32_i32$4 | 0) | 0;
+    i64toi32_i32$0 = i64toi32_i32$1 >>> i64toi32_i32$4;
+    $7 = ((1 << i64toi32_i32$4) - 1 & i64toi32_i32$1) << 32 - i64toi32_i32$4 | i64toi32_i32$2 >>> i64toi32_i32$4;
    }
   }
   setTempRet0($7 | 0);