[crankshaft] Also inline Math.ceil.

Inline calls to Math.ceil(x) as -Math.floor(-x) via the existing fast
path in Crankshaft.

R=ishell@chromium.org
BUG=v8:5782

Review-Url: https://codereview.chromium.org/2621903002
Cr-Commit-Position: refs/heads/master@{#42161}

src/crankshaft/hydrogen.cc

@@ -8366,6 +8366,23 @@ bool HOptimizedGraphBuilder::TryInlineBuiltinFunctionCall(Call* expr) {
         return true;
       }
       break;
+    case kMathCeil:
+      if (expr->arguments()->length() == 1) {
+        // Math.ceil(x) = -Math.floor(-x)
+        HValue* minus_zero = Add<HConstant>(-0.0);
+        HValue* argument = Pop();
+        Drop(2);  // Receiver and function.
+        argument = AddUncasted<HSub>(minus_zero, argument);
+        Add<HSimulate>(expr->id(), REMOVABLE_SIMULATE);
+        {
+          NoObservableSideEffectsScope scope(this);
+          argument = AddUncasted<HUnaryMathOperation>(argument, kMathFloor);
+          argument = AddUncasted<HSub>(minus_zero, argument);
+        }
+        ast_context()->ReturnValue(argument);
+        return true;
+      }
+      break;
     case kMathImul:
       if (expr->arguments()->length() == 2) {
         HValue* right = Pop();
@@ -8566,6 +8583,23 @@ bool HOptimizedGraphBuilder::TryInlineBuiltinMethodCall(
         return true;
       }
       break;
+    case kMathCeil:
+      if (argument_count == 2) {
+        // Math.ceil(x) = -Math.floor(-x)
+        HValue* minus_zero = Add<HConstant>(-0.0);
+        HValue* argument = Pop();
+        Drop(2);  // Receiver and function.
+        argument = AddUncasted<HSub>(minus_zero, argument);
+        Add<HSimulate>(ast_id, REMOVABLE_SIMULATE);
+        {
+          NoObservableSideEffectsScope scope(this);
+          argument = AddUncasted<HUnaryMathOperation>(argument, kMathFloor);
+          argument = AddUncasted<HSub>(minus_zero, argument);
+        }
+        ast_context()->ReturnValue(argument);
+        return true;
+      }
+      break;
     case kMathPow:
       if (argument_count == 3) {
         HValue* right = Pop();