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(0.46) Skip bounds checks in BigInteger bit{Count,Length} #19705

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Merged
merged 1 commit into from
Jun 13, 2024
Merged

(0.46) Skip bounds checks in BigInteger bit{Count,Length} #19705

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2 changes: 2 additions & 0 deletions runtime/compiler/codegen/J9RecognizedMethodsEnum.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -839,6 +839,8 @@
java_math_BigInteger_toByteArray,
java_math_BigInteger_stripLeadingZeroBytes1,
java_math_BigInteger_stripLeadingZeroBytes2,
java_math_BigInteger_bitCount,
java_math_BigInteger_bitLength,

java_text_NumberFormat_format,

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2 changes: 2 additions & 0 deletions runtime/compiler/env/j9method.cpp
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Expand Up @@ -2643,6 +2643,8 @@ void TR_ResolvedJ9Method::construct()
{x(TR::java_math_BigInteger_toByteArray, "toByteArray", "()[B")},
{x(TR::java_math_BigInteger_stripLeadingZeroBytes1, "stripLeadingZeroBytes", "([BII)[I")},
{x(TR::java_math_BigInteger_stripLeadingZeroBytes2, "stripLeadingZeroBytes", "(I[BII)[I")},
{x(TR::java_math_BigInteger_bitCount, "bitCount", "()I")},
{x(TR::java_math_BigInteger_bitLength, "bitLength", "()I")},
{ TR::unknownMethod}
};

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4 changes: 4 additions & 0 deletions runtime/compiler/il/J9MethodSymbol.cpp
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Expand Up @@ -303,6 +303,10 @@ static TR::RecognizedMethod canSkipBoundChecks[] =
#endif // OPENJ9_BUILD
TR::java_math_BigInteger_stripLeadingZeroBytes1,
TR::java_math_BigInteger_stripLeadingZeroBytes2,
#ifdef OPENJ9_BUILD
TR::java_math_BigInteger_bitCount,
TR::java_math_BigInteger_bitLength,
#endif // OPENJ9_BUILD
TR::java_util_HashMap_get,
TR::java_util_HashMap_findNonNullKeyEntry,
TR::java_util_HashMap_putImpl,
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