v8/test/mjsunit/compiler/multiply-add.js

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// Flags: --allow-natives-syntax
// Test expressions that can be computed with a multiply-add instruction.

function f(a, b, c) {
  return a * b + c;
}

function g(a, b, c) {
  return a + b * c;
}

function h(a, b, c, d) {
  return a * b + c * d;
}

%PrepareFunctionForOptimization(f);
assertEquals(5, f(1, 2, 3));
assertEquals(5, f(1, 2, 3));
%OptimizeFunctionOnNextCall(f);
assertEquals(5, f(1, 2, 3));
assertEquals("2foo", f(1, 2, "foo"));
assertEquals(5.41, f(1.1, 2.1, 3.1));
assertEquals(5.41, f(1.1, 2.1, 3.1));
%PrepareFunctionForOptimization(f);
%OptimizeFunctionOnNextCall(f);
assertEquals(5.41, f(1.1, 2.1, 3.1));

%PrepareFunctionForOptimization(g);
assertEquals(7, g(1, 2, 3));
assertEquals(7, g(1, 2, 3));
%OptimizeFunctionOnNextCall(g);
assertEquals(7, g(1, 2, 3));
assertEquals(8.36, g(1.1, 2.2, 3.3));
assertEquals(8.36, g(1.1, 2.2, 3.3));
%PrepareFunctionForOptimization(g);
%OptimizeFunctionOnNextCall(g);
assertEquals(8.36, g(1.1, 2.2, 3.3));

%PrepareFunctionForOptimization(h);
assertEquals(14, h(1, 2, 3, 4));
assertEquals(14, h(1, 2, 3, 4));
%OptimizeFunctionOnNextCall(h);
assertEquals(14, h(1, 2, 3, 4));
assertEquals(15.02, h(1.1, 2.1, 3.1, 4.1));
assertEquals(15.02, h(1.1, 2.1, 3.1, 4.1));
%PrepareFunctionForOptimization(h);
%OptimizeFunctionOnNextCall(h);
assertEquals(15.02, h(1.1, 2.1, 3.1, 4.1));