v8/test/mjsunit/compiler/multiply-sub.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(-5.41, f(1.1, 2.1, 3.1));
assertEquals(-5.41, f(1.1, 2.1, 3.1));
%OptimizeFunctionOnNextCall(f);
assertEquals(-5.41, f(1.1, 2.1, 3.1));

%PrepareFunctionForOptimization(g);
assertEquals(8.36, g(2.2, 3.3, -1.1));
assertEquals(8.36, g(2.2, 3.3, -1.1));
%OptimizeFunctionOnNextCall(g);
assertEquals(8.36, g(2.2, 3.3, -1.1));

%PrepareFunctionForOptimization(h);
assertEquals(-1.5, h(1.5, 3.0, 12, 0.5));
assertEquals(-1.5, h(1.5, 3.0, 12, 0.5));
%OptimizeFunctionOnNextCall(h);
assertEquals(-1.5, h(1.5, 3.0, 12, 0.5));