wasm2js: don't run coalesce-locals if not optimizing (#2076)

That pass is very slow on unoptimized code (super-linear on the number of locals, which if unoptimized can be massive due to flatten).

1 files changed, 172 insertions, 135 deletions

diff --git a/test/wasm2js/i64-add-sub.2asm.js b/test/wasm2js/i64-add-sub.2asm.js
index f0fdcb6ac..d27bbe3e4 100644
--- a/test/wasm2js/i64-add-sub.2asm.js
+++ b/test/wasm2js/i64-add-sub.2asm.js
@@ -21,38 +21,49 @@ function asmFunc(global, env, buffer) {
  var abort = env.abort;
  var nan = global.NaN;
  var infinity = global.Infinity;
- function $1($0, $1_1, $2_1, $3, $4, $5) {
+ function $1($0, $0$hi, $1_1, $1$hi, r, r$hi) {
   $0 = $0 | 0;
+  $0$hi = $0$hi | 0;
   $1_1 = $1_1 | 0;
-  $2_1 = $2_1 | 0;
-  $3 = $3 | 0;
-  $4 = $4 | 0;
-  $5 = $5 | 0;
-  var $6 = 0;
-  $6 = $0 + $2_1 | 0;
-  $0 = $1_1 + $3 | 0;
-  if ($6 >>> 0 < $2_1 >>> 0) {
-   $0 = $0 + 1 | 0
+  $1$hi = $1$hi | 0;
+  r = r | 0;
+  r$hi = r$hi | 0;
+  var i64toi32_i32$5 = 0, i64toi32_i32$3 = 0, i64toi32_i32$4 = 0, $5$hi = 0;
+  i64toi32_i32$3 = $1_1;
+  i64toi32_i32$4 = $0 + i64toi32_i32$3 | 0;
+  i64toi32_i32$5 = $0$hi + $1$hi | 0;
+  if (i64toi32_i32$4 >>> 0 < i64toi32_i32$3 >>> 0) {
+   i64toi32_i32$5 = i64toi32_i32$5 + 1 | 0
   }
-  $2_1 = $4;
-  return ($6 | 0) == ($2_1 | 0) & ($0 | 0) == ($5 | 0) | 0 | 0;
+  $5$hi = i64toi32_i32$5;
+  i64toi32_i32$5 = r$hi;
+  i64toi32_i32$5 = $5$hi;
+  i64toi32_i32$3 = r;
+  return (i64toi32_i32$4 | 0) == (i64toi32_i32$3 | 0) & (i64toi32_i32$5 | 0) == (r$hi | 0) | 0 | 0;
  }
  
- function $2($0, $1_1, $2_1, $3, $4, $5) {
+ function $2($0, $0$hi, $1_1, $1$hi, r, r$hi) {
   $0 = $0 | 0;
+  $0$hi = $0$hi | 0;
   $1_1 = $1_1 | 0;
-  $2_1 = $2_1 | 0;
-  $3 = $3 | 0;
-  $4 = $4 | 0;
-  $5 = $5 | 0;
-  var $6 = 0;
-  $6 = $0;
-  $0 = ($6 >>> 0 < $2_1 >>> 0) + $3 | 0;
-  $0 = $1_1 - $0 | 0;
-  $1_1 = $6 - $2_1 | 0;
-  $6 = $5;
-  $2_1 = $4;
-  return ($1_1 | 0) == ($2_1 | 0) & ($0 | 0) == ($6 | 0) | 0 | 0;
+  $1$hi = $1$hi | 0;
+  r = r | 0;
+  r$hi = r$hi | 0;
+  var i64toi32_i32$5 = 0, i64toi32_i32$0 = 0, i64toi32_i32$2 = 0, i64toi32_i32$3 = 0, $5$hi = 0;
+  i64toi32_i32$0 = $0$hi;
+  i64toi32_i32$0 = $1$hi;
+  i64toi32_i32$0 = $0$hi;
+  i64toi32_i32$2 = $0;
+  i64toi32_i32$3 = $1_1;
+  i64toi32_i32$5 = (i64toi32_i32$2 >>> 0 < i64toi32_i32$3 >>> 0) + $1$hi | 0;
+  i64toi32_i32$5 = i64toi32_i32$0 - i64toi32_i32$5 | 0;
+  $5$hi = i64toi32_i32$5;
+  i64toi32_i32$5 = r$hi;
+  i64toi32_i32$5 = $5$hi;
+  i64toi32_i32$0 = i64toi32_i32$2 - i64toi32_i32$3 | 0;
+  i64toi32_i32$2 = r$hi;
+  i64toi32_i32$3 = r;
+  return (i64toi32_i32$0 | 0) == (i64toi32_i32$3 | 0) & (i64toi32_i32$5 | 0) == (i64toi32_i32$2 | 0) | 0 | 0;
  }
  
  function legalstub$1($0, $1_1, $2_1, $3, $4, $5) {
@@ -62,79 +73,92 @@ function asmFunc(global, env, buffer) {
   $3 = $3 | 0;
   $4 = $4 | 0;
   $5 = $5 | 0;
-  var $6 = 0, $7 = 0, $8 = 0, $9 = 0, $10 = 0, $11 = 0;
-  $6 = 0;
-  $10 = $0;
-  $9 = $6;
-  $6 = 0;
-  $7 = 32;
-  $8 = $7 & 31 | 0;
-  if (32 >>> 0 <= ($7 & 63 | 0) >>> 0) {
+  var i64toi32_i32$0 = 0, i64toi32_i32$2 = 0, i64toi32_i32$1 = 0, i64toi32_i32$4 = 0, i64toi32_i32$3 = 0, $26 = 0, $27 = 0, $28 = 0, $7 = 0, $7$hi = 0, $10$hi = 0, $11 = 0, $11$hi = 0, $13 = 0, $13$hi = 0, $16$hi = 0, $17 = 0, $17$hi = 0, $19 = 0, $19$hi = 0, $22$hi = 0, $23 = 0, $23$hi = 0;
+  i64toi32_i32$0 = 0;
+  $7 = $0;
+  $7$hi = i64toi32_i32$0;
+  i64toi32_i32$0 = 0;
+  i64toi32_i32$2 = $1_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) {
    {
-    $0 = $1_1 << $8 | 0;
-    $7 = 0;
+    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    $26 = 0;
    }
   } else {
    {
-    $0 = ((1 << $8 | 0) - 1 | 0) & ($1_1 >>> (32 - $8 | 0) | 0) | 0 | ($6 << $8 | 0) | 0;
-    $7 = $1_1 << $8 | 0;
+    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;
+    $26 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
    }
   }
-  $1_1 = $0;
-  $0 = $9;
-  $6 = $10;
-  $1_1 = $0 | $1_1 | 0;
-  $11 = $6 | $7 | 0;
-  $10 = $1_1;
-  $1_1 = 0;
-  $9 = $1_1;
-  $1_1 = 0;
-  $0 = $3;
-  $7 = 32;
-  $8 = $7 & 31 | 0;
-  if (32 >>> 0 <= ($7 & 63 | 0) >>> 0) {
+  $10$hi = i64toi32_i32$1;
+  i64toi32_i32$1 = $7$hi;
+  i64toi32_i32$0 = $7;
+  i64toi32_i32$2 = $10$hi;
+  i64toi32_i32$3 = $26;
+  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2 | 0;
+  $11 = i64toi32_i32$0 | i64toi32_i32$3 | 0;
+  $11$hi = i64toi32_i32$2;
+  i64toi32_i32$2 = 0;
+  $13 = $2_1;
+  $13$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) {
    {
-    $6 = $0 << $8 | 0;
-    $7 = 0;
+    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
+    $27 = 0;
    }
   } else {
    {
-    $6 = ((1 << $8 | 0) - 1 | 0) & ($0 >>> (32 - $8 | 0) | 0) | 0 | ($1_1 << $8 | 0) | 0;
-    $7 = $0 << $8 | 0;
+    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;
+    $27 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
    }
   }
-  $0 = $6;
-  $6 = $9;
-  $1_1 = $2_1;
-  $0 = $6 | $0 | 0;
-  $9 = $1_1 | $7 | 0;
-  $2_1 = $0;
-  $0 = 0;
-  $3 = $0;
-  $0 = 0;
-  $6 = $5;
-  $7 = 32;
-  $8 = $7 & 31 | 0;
-  if (32 >>> 0 <= ($7 & 63 | 0) >>> 0) {
+  $16$hi = i64toi32_i32$0;
+  i64toi32_i32$0 = $13$hi;
+  i64toi32_i32$2 = $13;
+  i64toi32_i32$1 = $16$hi;
+  i64toi32_i32$3 = $27;
+  i64toi32_i32$1 = i64toi32_i32$0 | i64toi32_i32$1 | 0;
+  $17 = i64toi32_i32$2 | i64toi32_i32$3 | 0;
+  $17$hi = i64toi32_i32$1;
+  i64toi32_i32$1 = 0;
+  $19 = $4;
+  $19$hi = i64toi32_i32$1;
+  i64toi32_i32$1 = 0;
+  i64toi32_i32$0 = $5;
+  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) {
    {
-    $1_1 = $6 << $8 | 0;
-    $7 = 0;
+    i64toi32_i32$2 = i64toi32_i32$0 << i64toi32_i32$4 | 0;
+    $28 = 0;
    }
   } else {
    {
-    $1_1 = ((1 << $8 | 0) - 1 | 0) & ($6 >>> (32 - $8 | 0) | 0) | 0 | ($0 << $8 | 0) | 0;
-    $7 = $6 << $8 | 0;
+    i64toi32_i32$2 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$0 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$1 << i64toi32_i32$4 | 0) | 0;
+    $28 = i64toi32_i32$0 << i64toi32_i32$4 | 0;
    }
   }
-  $6 = $1_1;
-  $1_1 = $3;
-  $0 = $4;
-  $6 = $1_1 | $6 | 0;
-  $3 = $0 | $7 | 0;
-  $1_1 = $6;
-  $6 = $10;
-  $0 = $2_1;
-  return $1($11 | 0, $6 | 0, $9 | 0, $0 | 0, $3 | 0, $1_1 | 0) | 0 | 0;
+  $22$hi = i64toi32_i32$2;
+  i64toi32_i32$2 = $19$hi;
+  i64toi32_i32$1 = $19;
+  i64toi32_i32$0 = $22$hi;
+  i64toi32_i32$3 = $28;
+  i64toi32_i32$0 = i64toi32_i32$2 | i64toi32_i32$0 | 0;
+  $23 = i64toi32_i32$1 | i64toi32_i32$3 | 0;
+  $23$hi = i64toi32_i32$0;
+  i64toi32_i32$0 = $11$hi;
+  i64toi32_i32$1 = $17$hi;
+  i64toi32_i32$2 = $23$hi;
+  return $1($11 | 0, i64toi32_i32$0 | 0, $17 | 0, i64toi32_i32$1 | 0, $23 | 0, i64toi32_i32$2 | 0) | 0 | 0;
  }
  
  function legalstub$2($0, $1_1, $2_1, $3, $4, $5) {
@@ -144,79 +168,92 @@ function asmFunc(global, env, buffer) {
   $3 = $3 | 0;
   $4 = $4 | 0;
   $5 = $5 | 0;
-  var $6 = 0, $7 = 0, $8 = 0, $9 = 0, $10 = 0, $11 = 0;
-  $6 = 0;
-  $10 = $0;
-  $9 = $6;
-  $6 = 0;
-  $7 = 32;
-  $8 = $7 & 31 | 0;
-  if (32 >>> 0 <= ($7 & 63 | 0) >>> 0) {
+  var i64toi32_i32$0 = 0, i64toi32_i32$2 = 0, i64toi32_i32$1 = 0, i64toi32_i32$4 = 0, i64toi32_i32$3 = 0, $26 = 0, $27 = 0, $28 = 0, $7 = 0, $7$hi = 0, $10$hi = 0, $11 = 0, $11$hi = 0, $13 = 0, $13$hi = 0, $16$hi = 0, $17 = 0, $17$hi = 0, $19 = 0, $19$hi = 0, $22$hi = 0, $23 = 0, $23$hi = 0;
+  i64toi32_i32$0 = 0;
+  $7 = $0;
+  $7$hi = i64toi32_i32$0;
+  i64toi32_i32$0 = 0;
+  i64toi32_i32$2 = $1_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) {
    {
-    $0 = $1_1 << $8 | 0;
-    $7 = 0;
+    i64toi32_i32$1 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
+    $26 = 0;
    }
   } else {
    {
-    $0 = ((1 << $8 | 0) - 1 | 0) & ($1_1 >>> (32 - $8 | 0) | 0) | 0 | ($6 << $8 | 0) | 0;
-    $7 = $1_1 << $8 | 0;
+    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;
+    $26 = i64toi32_i32$2 << i64toi32_i32$4 | 0;
    }
   }
-  $1_1 = $0;
-  $0 = $9;
-  $6 = $10;
-  $1_1 = $0 | $1_1 | 0;
-  $11 = $6 | $7 | 0;
-  $10 = $1_1;
-  $1_1 = 0;
-  $9 = $1_1;
-  $1_1 = 0;
-  $0 = $3;
-  $7 = 32;
-  $8 = $7 & 31 | 0;
-  if (32 >>> 0 <= ($7 & 63 | 0) >>> 0) {
+  $10$hi = i64toi32_i32$1;
+  i64toi32_i32$1 = $7$hi;
+  i64toi32_i32$0 = $7;
+  i64toi32_i32$2 = $10$hi;
+  i64toi32_i32$3 = $26;
+  i64toi32_i32$2 = i64toi32_i32$1 | i64toi32_i32$2 | 0;
+  $11 = i64toi32_i32$0 | i64toi32_i32$3 | 0;
+  $11$hi = i64toi32_i32$2;
+  i64toi32_i32$2 = 0;
+  $13 = $2_1;
+  $13$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) {
    {
-    $6 = $0 << $8 | 0;
-    $7 = 0;
+    i64toi32_i32$0 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
+    $27 = 0;
    }
   } else {
    {
-    $6 = ((1 << $8 | 0) - 1 | 0) & ($0 >>> (32 - $8 | 0) | 0) | 0 | ($1_1 << $8 | 0) | 0;
-    $7 = $0 << $8 | 0;
+    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;
+    $27 = i64toi32_i32$1 << i64toi32_i32$4 | 0;
    }
   }
-  $0 = $6;
-  $6 = $9;
-  $1_1 = $2_1;
-  $0 = $6 | $0 | 0;
-  $9 = $1_1 | $7 | 0;
-  $2_1 = $0;
-  $0 = 0;
-  $3 = $0;
-  $0 = 0;
-  $6 = $5;
-  $7 = 32;
-  $8 = $7 & 31 | 0;
-  if (32 >>> 0 <= ($7 & 63 | 0) >>> 0) {
+  $16$hi = i64toi32_i32$0;
+  i64toi32_i32$0 = $13$hi;
+  i64toi32_i32$2 = $13;
+  i64toi32_i32$1 = $16$hi;
+  i64toi32_i32$3 = $27;
+  i64toi32_i32$1 = i64toi32_i32$0 | i64toi32_i32$1 | 0;
+  $17 = i64toi32_i32$2 | i64toi32_i32$3 | 0;
+  $17$hi = i64toi32_i32$1;
+  i64toi32_i32$1 = 0;
+  $19 = $4;
+  $19$hi = i64toi32_i32$1;
+  i64toi32_i32$1 = 0;
+  i64toi32_i32$0 = $5;
+  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) {
    {
-    $1_1 = $6 << $8 | 0;
-    $7 = 0;
+    i64toi32_i32$2 = i64toi32_i32$0 << i64toi32_i32$4 | 0;
+    $28 = 0;
    }
   } else {
    {
-    $1_1 = ((1 << $8 | 0) - 1 | 0) & ($6 >>> (32 - $8 | 0) | 0) | 0 | ($0 << $8 | 0) | 0;
-    $7 = $6 << $8 | 0;
+    i64toi32_i32$2 = ((1 << i64toi32_i32$4 | 0) - 1 | 0) & (i64toi32_i32$0 >>> (32 - i64toi32_i32$4 | 0) | 0) | 0 | (i64toi32_i32$1 << i64toi32_i32$4 | 0) | 0;
+    $28 = i64toi32_i32$0 << i64toi32_i32$4 | 0;
    }
   }
-  $6 = $1_1;
-  $1_1 = $3;
-  $0 = $4;
-  $6 = $1_1 | $6 | 0;
-  $3 = $0 | $7 | 0;
-  $1_1 = $6;
-  $6 = $10;
-  $0 = $2_1;
-  return $2($11 | 0, $6 | 0, $9 | 0, $0 | 0, $3 | 0, $1_1 | 0) | 0 | 0;
+  $22$hi = i64toi32_i32$2;
+  i64toi32_i32$2 = $19$hi;
+  i64toi32_i32$1 = $19;
+  i64toi32_i32$0 = $22$hi;
+  i64toi32_i32$3 = $28;
+  i64toi32_i32$0 = i64toi32_i32$2 | i64toi32_i32$0 | 0;
+  $23 = i64toi32_i32$1 | i64toi32_i32$3 | 0;
+  $23$hi = i64toi32_i32$0;
+  i64toi32_i32$0 = $11$hi;
+  i64toi32_i32$1 = $17$hi;
+  i64toi32_i32$2 = $23$hi;
+  return $2($11 | 0, i64toi32_i32$0 | 0, $17 | 0, i64toi32_i32$1 | 0, $23 | 0, i64toi32_i32$2 | 0) | 0 | 0;
  }
  
  var FUNCTION_TABLE = [];