wasm2js: run more optimizations (#2073)

In particular, coalesce-locals is useful even if closure is run later (apparently it finds stuff closure can't).

1 files changed, 265 insertions, 372 deletions

diff --git a/test/wasm2js/func.2asm.js b/test/wasm2js/func.2asm.js
index c2d422b2e..4759ccdb7 100644
--- a/test/wasm2js/func.2asm.js
+++ b/test/wasm2js/func.2asm.js
@@ -42,10 +42,9 @@ function asmFunc(global, env, buffer) {
  }
  
  function $24() {
-  var i64toi32_i32$0 = 0, $0$hi = 0, $0 = 0;
-  i64toi32_i32$0 = $0$hi;
-  i64toi32_i32$HIGH_BITS = i64toi32_i32$0;
-  return $0 | 0;
+  var $0 = 0, $1 = 0;
+  i64toi32_i32$HIGH_BITS = $0;
+  return $1 | 0;
  }
  
  function $25() {
@@ -59,31 +58,29 @@ function asmFunc(global, env, buffer) {
  }
  
  function $27() {
-  var $1 = 0;
-  return $1 | 0;
+  var $0 = 0;
+  return $0 | 0;
  }
  
  function $28() {
-  var i64toi32_i32$0 = 0, $1$hi = 0, $1 = 0;
-  i64toi32_i32$0 = $1$hi;
-  i64toi32_i32$HIGH_BITS = i64toi32_i32$0;
+  var $0 = 0, $1 = 0;
+  i64toi32_i32$HIGH_BITS = $0;
   return $1 | 0;
  }
  
  function $29() {
-  var $1 = Math_fround(0);
-  return Math_fround($1);
+  var $0 = Math_fround(0);
+  return Math_fround($0);
  }
  
  function $30() {
-  var $1 = 0.0;
-  return +$1;
+  var $0 = 0.0;
+  return +$0;
  }
  
  function $31() {
-  var i64toi32_i32$0 = 0, $4 = 0.0, $0 = Math_fround(0), x = 0, $2$hi = 0, $2_1 = 0, $3 = 0, $5 = 0;
-  i64toi32_i32$0 = $2$hi;
-  return +$4;
+  var $0 = 0.0, $1 = Math_fround(0), $2_1 = 0, $3 = 0, $4 = 0, $5 = 0, $6 = 0;
+  return +$0;
  }
  
  function $32($0, $1) {
@@ -92,14 +89,12 @@ function asmFunc(global, env, buffer) {
   return $0 | 0;
  }
  
- function $33($0, $0$hi, $1, $1$hi) {
+ function $33($0, $1, $2_1, $3) {
   $0 = $0 | 0;
-  $0$hi = $0$hi | 0;
   $1 = $1 | 0;
-  $1$hi = $1$hi | 0;
-  var i64toi32_i32$0 = 0;
-  i64toi32_i32$0 = $0$hi;
-  i64toi32_i32$HIGH_BITS = i64toi32_i32$0;
+  $2_1 = $2_1 | 0;
+  $3 = $3 | 0;
+  i64toi32_i32$HIGH_BITS = $1;
   return $0 | 0;
  }
  
@@ -121,15 +116,13 @@ function asmFunc(global, env, buffer) {
   return $1 | 0;
  }
  
- function $37($0, $0$hi, $1, $1$hi) {
+ function $37($0, $1, $2_1, $3) {
   $0 = $0 | 0;
-  $0$hi = $0$hi | 0;
   $1 = $1 | 0;
-  $1$hi = $1$hi | 0;
-  var i64toi32_i32$0 = 0;
-  i64toi32_i32$0 = $1$hi;
-  i64toi32_i32$HIGH_BITS = i64toi32_i32$0;
-  return $1 | 0;
+  $2_1 = $2_1 | 0;
+  $3 = $3 | 0;
+  i64toi32_i32$HIGH_BITS = $3;
+  return $2_1 | 0;
  }
  
  function $38($0, $1) {
@@ -144,17 +137,15 @@ function asmFunc(global, env, buffer) {
   return +$1;
  }
  
- function $40($0, $1, x, x$hi, $3, $4, $5) {
+ function $40($0, $1, $2_1, $3, $4, $5, $6) {
   $0 = Math_fround($0);
   $1 = $1 | 0;
-  x = x | 0;
-  x$hi = x$hi | 0;
+  $2_1 = $2_1 | 0;
   $3 = $3 | 0;
-  $4 = +$4;
-  $5 = $5 | 0;
-  var i64toi32_i32$0 = 0;
-  i64toi32_i32$0 = x$hi;
-  return +$4;
+  $4 = $4 | 0;
+  $5 = +$5;
+  $6 = $6 | 0;
+  return +$5;
  }
  
  function $41() {
@@ -232,16 +223,14 @@ function asmFunc(global, env, buffer) {
  }
  
  function $57() {
-  var i64toi32_i32$0 = 0, $0 = 0, $0$hi = 0;
+  var $0 = 0, $1 = 0;
   fake_return_waka123 : {
-   i64toi32_i32$0 = 0;
-   $0 = 7979;
-   $0$hi = i64toi32_i32$0;
+   $0 = 0;
+   $1 = 7979;
    break fake_return_waka123;
   }
-  i64toi32_i32$0 = $0$hi;
-  i64toi32_i32$HIGH_BITS = i64toi32_i32$0;
-  return $0 | 0;
+  i64toi32_i32$HIGH_BITS = $0;
+  return $1 | 0;
  }
  
  function $58() {
@@ -263,13 +252,13 @@ function asmFunc(global, env, buffer) {
  }
  
  function $60() {
-  var $2_1 = 0;
+  var $0 = 0;
   fake_return_waka123 : {
    dummy();
-   $2_1 = 77;
+   $0 = 77;
    break fake_return_waka123;
   }
-  return $2_1 | 0;
+  return $0 | 0;
  }
  
  function $61($0) {
@@ -278,15 +267,15 @@ function asmFunc(global, env, buffer) {
  
  function $62($0) {
   $0 = $0 | 0;
-  var $2_1 = 0;
+  var $1 = 0;
+  $1 = 50;
   fake_return_waka123 : {
-   $2_1 = 50;
    if ($0) {
     break fake_return_waka123
    }
-   $2_1 = 51;
+   $1 = 51;
   }
-  return $2_1 | 0;
+  return $1 | 0;
  }
  
  function $63($0) {
@@ -295,15 +284,15 @@ function asmFunc(global, env, buffer) {
  
  function $64($0) {
   $0 = $0 | 0;
-  var $3 = 0;
+  var $1 = 0;
   fake_return_waka123 : {
-   $3 = 50;
+   $1 = 50;
    switch ($0 | 0) {
    default:
     break fake_return_waka123;
    };
   }
-  return $3 | 0;
+  return $1 | 0;
  }
  
  function $65($0) {
@@ -312,12 +301,11 @@ function asmFunc(global, env, buffer) {
  
  function $66($0) {
   $0 = $0 | 0;
-  var $2_1 = 0, $3 = 0, $4 = 0;
+  var $1 = 0, $2_1 = 0;
   fake_return_waka123 : {
    block : {
-    $2_1 = 50;
-    $3 = $2_1;
-    $4 = $2_1;
+    $1 = 50;
+    $2_1 = $1;
     switch ($0 | 0) {
     case 1:
      break fake_return_waka123;
@@ -325,9 +313,9 @@ function asmFunc(global, env, buffer) {
      break block;
     };
    }
-   $4 = $3 + 2 | 0;
+   $1 = $2_1 + 2 | 0;
   }
-  return $4 | 0;
+  return $1 | 0;
  }
  
  function $67() {
@@ -336,10 +324,9 @@ function asmFunc(global, env, buffer) {
  }
  
  function $68() {
-  var i64toi32_i32$0 = 0, $0$hi = 0, $0 = 0;
-  i64toi32_i32$0 = $0$hi;
-  i64toi32_i32$HIGH_BITS = i64toi32_i32$0;
-  return $0 | 0;
+  var $0 = 0, $1 = 0;
+  i64toi32_i32$HIGH_BITS = $0;
+  return $1 | 0;
  }
  
  function $69() {
@@ -356,36 +343,36 @@ function asmFunc(global, env, buffer) {
   
  }
  
- function complex_sig_1($0, $1, $1$hi, $2_1, $3, $3$hi, $4, $5, $5$hi, $6, $7) {
+ function complex_sig_1($0, $1, $2_1, $3, $4, $5, $6, $7, $8, $9, $10) {
   $0 = +$0;
   $1 = $1 | 0;
-  $1$hi = $1$hi | 0;
-  $2_1 = +$2_1;
-  $3 = $3 | 0;
-  $3$hi = $3$hi | 0;
-  $4 = +$4;
+  $2_1 = $2_1 | 0;
+  $3 = +$3;
+  $4 = $4 | 0;
   $5 = $5 | 0;
-  $5$hi = $5$hi | 0;
-  $6 = Math_fround($6);
+  $6 = +$6;
   $7 = $7 | 0;
+  $8 = $8 | 0;
+  $9 = Math_fround($9);
+  $10 = $10 | 0;
  }
  
  function empty_sig_2() {
   
  }
  
- function complex_sig_3($0, $1, $1$hi, $2_1, $3, $3$hi, $4, $5, $5$hi, $6, $7) {
+ function complex_sig_3($0, $1, $2_1, $3, $4, $5, $6, $7, $8, $9, $10) {
   $0 = +$0;
   $1 = $1 | 0;
-  $1$hi = $1$hi | 0;
-  $2_1 = +$2_1;
-  $3 = $3 | 0;
-  $3$hi = $3$hi | 0;
-  $4 = +$4;
+  $2_1 = $2_1 | 0;
+  $3 = +$3;
+  $4 = $4 | 0;
   $5 = $5 | 0;
-  $5$hi = $5$hi | 0;
-  $6 = Math_fround($6);
+  $6 = +$6;
   $7 = $7 | 0;
+  $8 = $8 | 0;
+  $9 = Math_fround($9);
+  $10 = $10 | 0;
  }
  
  function $76() {
@@ -394,19 +381,19 @@ function asmFunc(global, env, buffer) {
  }
  
  function $77() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$1 = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = 0;
-  i64toi32_i32$1 = 0;
-  i64toi32_i32$2 = 0;
-  FUNCTION_TABLE[0](0.0, 0, i64toi32_i32$0, 0.0, 0, i64toi32_i32$1, 0.0, 0, i64toi32_i32$2, Math_fround(0.0), 0);
-  i64toi32_i32$2 = 0;
-  i64toi32_i32$1 = 0;
-  i64toi32_i32$0 = 0;
-  FUNCTION_TABLE[2](0.0, 0, i64toi32_i32$2, 0.0, 0, i64toi32_i32$1, 0.0, 0, i64toi32_i32$0, Math_fround(0.0), 0);
-  i64toi32_i32$0 = 0;
-  i64toi32_i32$1 = 0;
-  i64toi32_i32$2 = 0;
-  FUNCTION_TABLE[3](0.0, 0, i64toi32_i32$0, 0.0, 0, i64toi32_i32$1, 0.0, 0, i64toi32_i32$2, Math_fround(0.0), 0);
+  var $0 = 0, $1 = 0, $2_1 = 0;
+  $0 = 0;
+  $1 = 0;
+  $2_1 = 0;
+  FUNCTION_TABLE[0](0.0, 0, $0, 0.0, 0, $1, 0.0, 0, $2_1, Math_fround(0.0), 0);
+  $2_1 = 0;
+  $1 = 0;
+  $0 = 0;
+  FUNCTION_TABLE[2](0.0, 0, $2_1, 0.0, 0, $1, 0.0, 0, $0, Math_fround(0.0), 0);
+  $0 = 0;
+  $1 = 0;
+  $2_1 = 0;
+  FUNCTION_TABLE[3](0.0, 0, $0, 0.0, 0, $1, 0.0, 0, $2_1, Math_fround(0.0), 0);
  }
  
  function $78() {
@@ -418,55 +405,37 @@ function asmFunc(global, env, buffer) {
  }
  
  function legalstub$24() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$4 = 0, i64toi32_i32$1 = 0, i64toi32_i32$3 = 0, $7 = 0, $0 = 0, $0$hi = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = $24() | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $0 = i64toi32_i32$0;
-  $0$hi = i64toi32_i32$1;
-  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$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  var $0 = 0, $1 = 0, $2_1 = 0, $3 = 0, $4 = 0, $5 = 0;
+  $0 = $24() | 0;
+  $2_1 = i64toi32_i32$HIGH_BITS;
+  $4 = $0;
+  $5 = $2_1;
+  $3 = 32;
+  $1 = $3 & 31 | 0;
+  if (32 >>> 0 <= ($3 & 63 | 0) >>> 0) {
+   $0 = $2_1 >>> $1 | 0
   } 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;
-   }
+   $0 = (((1 << $1 | 0) - 1 | 0) & $2_1 | 0) << (32 - $1 | 0) | 0 | ($0 >>> $1 | 0) | 0
   }
-  setTempRet0($7 | 0);
-  i64toi32_i32$0 = $0$hi;
-  return $0 | 0;
+  setTempRet0($0 | 0);
+  return $4 | 0;
  }
  
  function legalstub$28() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$4 = 0, i64toi32_i32$1 = 0, i64toi32_i32$3 = 0, $7 = 0, $0 = 0, $0$hi = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = $28() | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $0 = i64toi32_i32$0;
-  $0$hi = i64toi32_i32$1;
-  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$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  var $0 = 0, $1 = 0, $2_1 = 0, $3 = 0, $4 = 0, $5 = 0;
+  $0 = $28() | 0;
+  $2_1 = i64toi32_i32$HIGH_BITS;
+  $4 = $0;
+  $5 = $2_1;
+  $3 = 32;
+  $1 = $3 & 31 | 0;
+  if (32 >>> 0 <= ($3 & 63 | 0) >>> 0) {
+   $0 = $2_1 >>> $1 | 0
   } 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;
-   }
+   $0 = (((1 << $1 | 0) - 1 | 0) & $2_1 | 0) << (32 - $1 | 0) | 0 | ($0 >>> $1 | 0) | 0
   }
-  setTempRet0($7 | 0);
-  i64toi32_i32$0 = $0$hi;
-  return $0 | 0;
+  setTempRet0($0 | 0);
+  return $4 | 0;
  }
  
  function legalstub$33($0, $1, $2_1, $3) {
@@ -474,85 +443,68 @@ function asmFunc(global, env, buffer) {
   $1 = $1 | 0;
   $2_1 = $2_1 | 0;
   $3 = $3 | 0;
-  var i64toi32_i32$2 = 0, i64toi32_i32$1 = 0, i64toi32_i32$4 = 0, i64toi32_i32$0 = 0, i64toi32_i32$3 = 0, $21 = 0, $22 = 0, $23_1 = 0, $6 = 0, $6$hi = 0, $9$hi = 0, $10 = 0, $10$hi = 0, $12 = 0, $12$hi = 0, $15$hi = 0, $16 = 0, $16$hi = 0, $4 = 0, $4$hi = 0;
-  i64toi32_i32$0 = 0;
-  $6 = $0;
-  $6$hi = i64toi32_i32$0;
-  i64toi32_i32$0 = 0;
-  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) {
+  var $4 = 0, $5 = 0, $6 = 0, $7 = 0, $8 = 0, $9 = 0;
+  $6 = 0;
+  $7 = $0;
+  $8 = $6;
+  $6 = 0;
+  $5 = 32;
+  $4 = $5 & 31 | 0;
+  if (32 >>> 0 <= ($5 & 63 | 0) >>> 0) {
    {
-    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
-    $21 = 0;
+    $0 = $1 << $4 | 0;
+    $5 = 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;
+    $0 = ((1 << $4 | 0) - 1 | 0) & ($1 >>> (32 - $4 | 0) | 0) | 0 | ($6 << $4 | 0) | 0;
+    $5 = $1 << $4 | 0;
    }
   }
-  $9$hi = i64toi32_i32$1;
-  i64toi32_i32$1 = $6$hi;
-  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;
-  $10$hi = i64toi32_i32$2;
-  i64toi32_i32$2 = 0;
-  $12 = $2_1;
-  $12$hi = i64toi32_i32$2;
-  i64toi32_i32$2 = 0;
-  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) {
+  $1 = $0;
+  $0 = $8;
+  $6 = $7;
+  $1 = $0 | $1 | 0;
+  $9 = $6 | $5 | 0;
+  $7 = $1;
+  $1 = 0;
+  $8 = $1;
+  $1 = 0;
+  $0 = $3;
+  $5 = 32;
+  $4 = $5 & 31 | 0;
+  if (32 >>> 0 <= ($5 & 63 | 0) >>> 0) {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
-    $22 = 0;
+    $6 = $0 << $4 | 0;
+    $5 = 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;
+    $6 = ((1 << $4 | 0) - 1 | 0) & ($0 >>> (32 - $4 | 0) | 0) | 0 | ($1 << $4 | 0) | 0;
+    $5 = $0 << $4 | 0;
    }
   }
-  $15$hi = i64toi32_i32$0;
-  i64toi32_i32$0 = $12$hi;
-  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;
-  $16$hi = i64toi32_i32$1;
-  i64toi32_i32$1 = $10$hi;
-  i64toi32_i32$2 = $16$hi;
-  i64toi32_i32$2 = $33($10 | 0, i64toi32_i32$1 | 0, $16 | 0, i64toi32_i32$2 | 0) | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $4 = i64toi32_i32$2;
-  $4$hi = i64toi32_i32$1;
-  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$2 = 0;
-    $23_1 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  $0 = $6;
+  $6 = $8;
+  $1 = $2_1;
+  $0 = $6 | $0 | 0;
+  $2_1 = $1 | $5 | 0;
+  $1 = $0;
+  $0 = $7;
+  $1 = $33($9 | 0, $0 | 0, $2_1 | 0, $1 | 0) | 0;
+  $0 = i64toi32_i32$HIGH_BITS;
+  $3 = $1;
+  $2_1 = $0;
+  $6 = $1;
+  $5 = 32;
+  $4 = $5 & 31 | 0;
+  if (32 >>> 0 <= ($5 & 63 | 0) >>> 0) {
+   $0 = $0 >>> $4 | 0
   } 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;
-   }
+   $0 = (((1 << $4 | 0) - 1 | 0) & $0 | 0) << (32 - $4 | 0) | 0 | ($6 >>> $4 | 0) | 0
   }
-  setTempRet0($23_1 | 0);
-  i64toi32_i32$2 = $4$hi;
-  return $4 | 0;
+  setTempRet0($0 | 0);
+  return $3 | 0;
  }
  
  function legalstub$37($0, $1, $2_1, $3) {
@@ -560,85 +512,68 @@ function asmFunc(global, env, buffer) {
   $1 = $1 | 0;
   $2_1 = $2_1 | 0;
   $3 = $3 | 0;
-  var i64toi32_i32$2 = 0, i64toi32_i32$1 = 0, i64toi32_i32$4 = 0, i64toi32_i32$0 = 0, i64toi32_i32$3 = 0, $21 = 0, $22 = 0, $23_1 = 0, $6 = 0, $6$hi = 0, $9$hi = 0, $10 = 0, $10$hi = 0, $12 = 0, $12$hi = 0, $15$hi = 0, $16 = 0, $16$hi = 0, $4 = 0, $4$hi = 0;
-  i64toi32_i32$0 = 0;
-  $6 = $0;
-  $6$hi = i64toi32_i32$0;
-  i64toi32_i32$0 = 0;
-  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) {
+  var $4 = 0, $5 = 0, $6 = 0, $7 = 0, $8 = 0, $9 = 0;
+  $6 = 0;
+  $7 = $0;
+  $8 = $6;
+  $6 = 0;
+  $5 = 32;
+  $4 = $5 & 31 | 0;
+  if (32 >>> 0 <= ($5 & 63 | 0) >>> 0) {
    {
-    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
-    $21 = 0;
+    $0 = $1 << $4 | 0;
+    $5 = 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;
+    $0 = ((1 << $4 | 0) - 1 | 0) & ($1 >>> (32 - $4 | 0) | 0) | 0 | ($6 << $4 | 0) | 0;
+    $5 = $1 << $4 | 0;
    }
   }
-  $9$hi = i64toi32_i32$1;
-  i64toi32_i32$1 = $6$hi;
-  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;
-  $10$hi = i64toi32_i32$2;
-  i64toi32_i32$2 = 0;
-  $12 = $2_1;
-  $12$hi = i64toi32_i32$2;
-  i64toi32_i32$2 = 0;
-  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) {
+  $1 = $0;
+  $0 = $8;
+  $6 = $7;
+  $1 = $0 | $1 | 0;
+  $9 = $6 | $5 | 0;
+  $7 = $1;
+  $1 = 0;
+  $8 = $1;
+  $1 = 0;
+  $0 = $3;
+  $5 = 32;
+  $4 = $5 & 31 | 0;
+  if (32 >>> 0 <= ($5 & 63 | 0) >>> 0) {
    {
-    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
-    $22 = 0;
+    $6 = $0 << $4 | 0;
+    $5 = 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;
+    $6 = ((1 << $4 | 0) - 1 | 0) & ($0 >>> (32 - $4 | 0) | 0) | 0 | ($1 << $4 | 0) | 0;
+    $5 = $0 << $4 | 0;
    }
   }
-  $15$hi = i64toi32_i32$0;
-  i64toi32_i32$0 = $12$hi;
-  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;
-  $16$hi = i64toi32_i32$1;
-  i64toi32_i32$1 = $10$hi;
-  i64toi32_i32$2 = $16$hi;
-  i64toi32_i32$2 = $37($10 | 0, i64toi32_i32$1 | 0, $16 | 0, i64toi32_i32$2 | 0) | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $4 = i64toi32_i32$2;
-  $4$hi = i64toi32_i32$1;
-  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$2 = 0;
-    $23_1 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  $0 = $6;
+  $6 = $8;
+  $1 = $2_1;
+  $0 = $6 | $0 | 0;
+  $2_1 = $1 | $5 | 0;
+  $1 = $0;
+  $0 = $7;
+  $1 = $37($9 | 0, $0 | 0, $2_1 | 0, $1 | 0) | 0;
+  $0 = i64toi32_i32$HIGH_BITS;
+  $3 = $1;
+  $2_1 = $0;
+  $6 = $1;
+  $5 = 32;
+  $4 = $5 & 31 | 0;
+  if (32 >>> 0 <= ($5 & 63 | 0) >>> 0) {
+   $0 = $0 >>> $4 | 0
   } 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;
-   }
+   $0 = (((1 << $4 | 0) - 1 | 0) & $0 | 0) << (32 - $4 | 0) | 0 | ($6 >>> $4 | 0) | 0
   }
-  setTempRet0($23_1 | 0);
-  i64toi32_i32$2 = $4$hi;
-  return $4 | 0;
+  setTempRet0($0 | 0);
+  return $3 | 0;
  }
  
  function legalstub$40($0, $1, $2_1, $3, $4, $5, $6) {
@@ -649,139 +584,97 @@ function asmFunc(global, env, buffer) {
   $4 = $4 | 0;
   $5 = +$5;
   $6 = $6 | 0;
-  var i64toi32_i32$2 = 0, i64toi32_i32$0 = 0, i64toi32_i32$1 = 0, i64toi32_i32$4 = 0, i64toi32_i32$3 = 0, $17 = 0, $7 = Math_fround(0), $8 = 0, $10 = 0, $10$hi = 0, $13$hi = 0;
-  $7 = $0;
-  $8 = $1;
-  i64toi32_i32$0 = 0;
-  $10 = $2_1;
-  $10$hi = i64toi32_i32$0;
-  i64toi32_i32$0 = 0;
-  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) {
+  var $7 = 0, $8 = 0, $9 = 0, $10 = 0, $11 = 0;
+  $11 = $1;
+  $7 = 0;
+  $1 = $7;
+  $7 = 0;
+  $8 = 32;
+  $9 = $8 & 31 | 0;
+  if (32 >>> 0 <= ($8 & 63 | 0) >>> 0) {
    {
-    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
-    $17 = 0;
+    $10 = $3 << $9 | 0;
+    $8 = 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;
+    $10 = ((1 << $9 | 0) - 1 | 0) & ($3 >>> (32 - $9 | 0) | 0) | 0 | ($7 << $9 | 0) | 0;
+    $8 = $3 << $9 | 0;
    }
   }
-  $13$hi = i64toi32_i32$1;
-  i64toi32_i32$1 = $10$hi;
-  i64toi32_i32$0 = $10;
-  i64toi32_i32$2 = $13$hi;
-  i64toi32_i32$3 = $17;
-  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2 | 0;
-  return +(+$40(Math_fround($7), $8 | 0, i64toi32_i32$0 | i64toi32_i32$3 | 0 | 0, i64toi32_i32$2 | 0, $4 | 0, +$5, $6 | 0));
+  $3 = $10;
+  $10 = $1;
+  $7 = $2_1;
+  $3 = $10 | $3 | 0;
+  return +(+$40(Math_fround($0), $11 | 0, $7 | $8 | 0 | 0, $3 | 0, $4 | 0, +$5, $6 | 0));
  }
  
  function legalstub$44() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$4 = 0, i64toi32_i32$1 = 0, i64toi32_i32$3 = 0, $7 = 0, $0 = 0, $0$hi = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = $44() | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $0 = i64toi32_i32$0;
-  $0$hi = i64toi32_i32$1;
-  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$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  var $0 = 0, $1 = 0, $2_1 = 0, $3 = 0, $4 = 0, $5 = 0;
+  $0 = $44() | 0;
+  $2_1 = i64toi32_i32$HIGH_BITS;
+  $4 = $0;
+  $5 = $2_1;
+  $3 = 32;
+  $1 = $3 & 31 | 0;
+  if (32 >>> 0 <= ($3 & 63 | 0) >>> 0) {
+   $0 = $2_1 >>> $1 | 0
   } 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;
-   }
+   $0 = (((1 << $1 | 0) - 1 | 0) & $2_1 | 0) << (32 - $1 | 0) | 0 | ($0 >>> $1 | 0) | 0
   }
-  setTempRet0($7 | 0);
-  i64toi32_i32$0 = $0$hi;
-  return $0 | 0;
+  setTempRet0($0 | 0);
+  return $4 | 0;
  }
  
  function legalstub$51() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$4 = 0, i64toi32_i32$1 = 0, i64toi32_i32$3 = 0, $7 = 0, $0 = 0, $0$hi = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = $51() | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $0 = i64toi32_i32$0;
-  $0$hi = i64toi32_i32$1;
-  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$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  var $0 = 0, $1 = 0, $2_1 = 0, $3 = 0, $4 = 0, $5 = 0;
+  $0 = $51() | 0;
+  $2_1 = i64toi32_i32$HIGH_BITS;
+  $4 = $0;
+  $5 = $2_1;
+  $3 = 32;
+  $1 = $3 & 31 | 0;
+  if (32 >>> 0 <= ($3 & 63 | 0) >>> 0) {
+   $0 = $2_1 >>> $1 | 0
   } 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;
-   }
+   $0 = (((1 << $1 | 0) - 1 | 0) & $2_1 | 0) << (32 - $1 | 0) | 0 | ($0 >>> $1 | 0) | 0
   }
-  setTempRet0($7 | 0);
-  i64toi32_i32$0 = $0$hi;
-  return $0 | 0;
+  setTempRet0($0 | 0);
+  return $4 | 0;
  }
  
  function legalstub$57() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$4 = 0, i64toi32_i32$1 = 0, i64toi32_i32$3 = 0, $7 = 0, $0 = 0, $0$hi = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = $57() | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $0 = i64toi32_i32$0;
-  $0$hi = i64toi32_i32$1;
-  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$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  var $0 = 0, $1 = 0, $2_1 = 0, $3 = 0, $4 = 0, $5 = 0;
+  $0 = $57() | 0;
+  $2_1 = i64toi32_i32$HIGH_BITS;
+  $4 = $0;
+  $5 = $2_1;
+  $3 = 32;
+  $1 = $3 & 31 | 0;
+  if (32 >>> 0 <= ($3 & 63 | 0) >>> 0) {
+   $0 = $2_1 >>> $1 | 0
   } 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;
-   }
+   $0 = (((1 << $1 | 0) - 1 | 0) & $2_1 | 0) << (32 - $1 | 0) | 0 | ($0 >>> $1 | 0) | 0
   }
-  setTempRet0($7 | 0);
-  i64toi32_i32$0 = $0$hi;
-  return $0 | 0;
+  setTempRet0($0 | 0);
+  return $4 | 0;
  }
  
  function legalstub$68() {
-  var i64toi32_i32$0 = 0, i64toi32_i32$4 = 0, i64toi32_i32$1 = 0, i64toi32_i32$3 = 0, $7 = 0, $0 = 0, $0$hi = 0, i64toi32_i32$2 = 0;
-  i64toi32_i32$0 = $68() | 0;
-  i64toi32_i32$1 = i64toi32_i32$HIGH_BITS;
-  $0 = i64toi32_i32$0;
-  $0$hi = i64toi32_i32$1;
-  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$0 = 0;
-    $7 = i64toi32_i32$1 >>> i64toi32_i32$4 | 0;
-   }
+  var $0 = 0, $1 = 0, $2_1 = 0, $3 = 0, $4 = 0, $5 = 0;
+  $0 = $68() | 0;
+  $2_1 = i64toi32_i32$HIGH_BITS;
+  $4 = $0;
+  $5 = $2_1;
+  $3 = 32;
+  $1 = $3 & 31 | 0;
+  if (32 >>> 0 <= ($3 & 63 | 0) >>> 0) {
+   $0 = $2_1 >>> $1 | 0
   } 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;
-   }
+   $0 = (((1 << $1 | 0) - 1 | 0) & $2_1 | 0) << (32 - $1 | 0) | 0 | ($0 >>> $1 | 0) | 0
   }
-  setTempRet0($7 | 0);
-  i64toi32_i32$0 = $0$hi;
-  return $0 | 0;
+  setTempRet0($0 | 0);
+  return $4 | 0;
  }
  
  var FUNCTION_TABLE = [complex_sig_3, empty_sig_2, complex_sig_1, complex_sig_3, empty_sig_1];