// Another variant of the floating point test, but less brittle.
staticField = 1;
checkValue(String.valueOf($noinline$test()), "1.0");
staticField = 4;
checkValue(String.valueOf($noinline$test()), "2.0");
}
// This code is a reduced version of the original reproducer. The arm // code generator used to generate wrong code for it. Note that this // test is very brittle and a simple change in it could cause the compiler // to not trip. publicstaticvoid doFloatingPointTest(String s, String expected) { float a = (float)Integer.valueOf(s);
a = a < 2.0f ? a : 2.0f;
checkValue("" + a, expected);
}
// The compiler used to trip on the two following methods. The test there // is very brittle and requires not running constant folding after // load/store elimination. publicstaticint doIntegerTest1(int param) {
Main main = new Main();
main.field = 0; return (main.field == 0) ? 0 : param;
}
publicstaticint doIntegerTest2(int param) {
Main main = new Main();
main.field = 0; return (main.field != 0) ? 0 : param;
}
staticfloat $noinline$test() { // The 2.0f shall be materialized for GreaterThanOrEqual at the beginning of the method; // since the following call clobbers caller-saves, it is allocated to s16. // r0(field) = InvokeStaticOrDirect[] int one = $noinline$getField(); // s0(a_1) = TypeConversion[r0(one)] float a = (float)one; // s16(a_2) = Select[s0(a_1), C(2.0f), GreaterThanOrEqual[s0(a_1), s16(2.0f)]]
a = a < 2.0f ? a : 2.0f; // The following call is added to clobber caller-saves, forcing the output of the Select // to be allocated to s16.
$noinline$nothing(); return a;
}
int field; staticint staticField;
}
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.2 Sekunden
(vorverarbeitet am 2026-06-29)
¤
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