[benchmark] StackPromo Legacy Factor

Author: palimondo

benchmark/single-source/StackPromo.swift

@@ -14,7 +14,8 @@ import TestsUtils
 public let StackPromo = BenchmarkInfo(
   name: "StackPromo",
   runFunction: run_StackPromo,
-  tags: [.regression])
+  tags: [.regression],
+  legacyFactor: 100)
 
 protocol Proto {
   func at() -> Int
@@ -43,19 +44,12 @@ class Foo : Proto {
 @inline(never)
 func work(_ f: Foo) -> Int {
   var r = 0
-  for _ in 0..<100_000 {
+  for _ in 0..<1_000 {
     r += testStackAllocation(f)
   }
   return r
 }
 
-@inline(never)
-func hole(_ use: Int, _ N: Int) {
-  if (N == 0) {
-    print("use: \(use)")
-  }
-}
-
 public func run_StackPromo(_ N: Int) {
   let foo = Foo()
   var r = 0
@@ -66,5 +60,5 @@ public func run_StackPromo(_ N: Int) {
       r -= work(foo)
     }
   }
-  hole(r, N)
+  blackHole(r)
 }