fix int type coercion in asm to wasm

R=bradnelson@chromium.org
BUG=https://bugs.chromium.org/p/v8/issues/detail?id=4203
TEST=asm-wasm.js
LOG=N

Review URL: https://codereview.chromium.org/1675903002

Cr-Commit-Position: refs/heads/master@{#33793}

src/wasm/asm-wasm-builder.cc

@@ -782,9 +782,11 @@ class AsmWasmBuilderImpl : public AstVisitor {
   enum ConvertOperation { kNone, kAsIs, kToInt, kToDouble };
 
   ConvertOperation MatchOr(BinaryOperation* expr) {
-    if (MatchIntBinaryOperation(expr, Token::BIT_OR, 0)) {
-      return (TypeOf(expr->left()) == kAstI32) ? kAsIs : kToInt;
+    if (MatchIntBinaryOperation(expr, Token::BIT_OR, 0) &&
+        (TypeOf(expr->left()) == kAstI32)) {
+      return kAsIs;
     } else {
+      UNREACHABLE();
       return kNone;
     }
   }

test/mjsunit/wasm/asm-wasm.js

@@ -26,7 +26,7 @@ function IntTest() {
     b = b|0;
     var c = (b + 1)|0
     var d = 3.0;
-    var e = d | 0;  // double conversion
+    var e = ~~d;  // double conversion
     return (a + c + 1)|0;
   }