test/mjsunit/regress/regress-234101.js

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//
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// Flags: --allow-natives-syntax

// Currently, the gap resolver doesn't handle moves from a ConstantOperand to a
// DoubleRegister, but these kind of moves appeared when HConstant::EmitAtUses
// was changed to allow special double values (-0, NaN, hole). So we should
// either enhance the gap resolver or make sure that such moves don't happen.

function foo(x) {
 return (x ? NaN : 0.2) + 0.1;
}

foo(false);
foo(false);
%OptimizeFunctionOnNextCall(foo);
foo(false);