210978 2020-04-24 10:40:16 -0700 BigInt math runtime shouldn't convert BigInt32 input operands to a heap cell when doing math 2020-04-28 23:57:07 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 211165 1 saam saam benjamin commit-queue fpizlo ggaren gskachkov guijemont keith_miller mark.lam msaboff rmorisset ticaiolima tzagallo webkit-bug-importer ysuzuki oldest_to_newest 1645260 0 saam 2020-04-24 10:40:16 -0700 We could define an abstract interface and use that in the math runtime instead. 1645517 1 397536 saam 2020-04-24 19:31:53 -0700 Created attachment 397536 WIP it begins 1645536 2 keith_miller 2020-04-24 23:01:17 -0700 The title of this bug seems a bit ambitious in the abstract... 🤔 1646083 3 saam 2020-04-27 10:28:39 -0700 (In reply to Keith Miller from comment #2) > The title of this bug seems a bit ambitious in the abstract... 🤔 How so? 1646227 4 397743 saam 2020-04-27 14:45:52 -0700 Created attachment 397743 WIP 1646321 5 397771 saam 2020-04-27 17:23:15 -0700 Created attachment 397771 WIP it compiles 1646352 6 397782 saam 2020-04-27 18:54:11 -0700 Created attachment 397782 patch 1646356 7 397785 saam 2020-04-27 19:10:34 -0700 Created attachment 397785 patch 1646357 8 397786 saam 2020-04-27 19:14:57 -0700 Created attachment 397786 patch 1646363 9 397785 ysuzuki 2020-04-27 19:52:24 -0700 Comment on attachment 397785 patch View in context: https://bugs.webkit.org/attachment.cgi?id=397785&action=review r=me > Source/JavaScriptCore/runtime/Operations.cpp:79 > + RELEASE_AND_RETURN(scope, arithmeticBinaryOp(globalObject, p1, p2, doubleOp, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in addition."_s)); See the comment below. > Source/JavaScriptCore/runtime/Operations.h:531 > +ALWAYS_INLINE JSValue arithmeticBinaryOp(JSGlobalObject* globalObject, JSValue v1, JSValue v2, DoubleOperation&& doubleOp, JSValue (*bigInt32)(JSGlobalObject*, int32_t, int32_t), JSValue (*mixedBigInt1)(JSGlobalObject*, JSBigInt*, int32_t), JSValue (*mixedBigInt2)(JSGlobalObject*, int32_t, JSBigInt*), JSValue (*heapBigInt)(JSGlobalObject*, JSBigInt*, JSBigInt*), const char* errorMessage) Why not taking auto-parameterized lambda as a parameterized type-ed value and call it for all the BigInt cases? tempalte<typename DoubleOperation, typename BigIntOperation> ALWAYS_INLINE JSValue arithmeticBinaryOp(JSGlobalObject* globalObject, JSValue v1, JSValue v2, DoubleOperation&& doubleOp, BigIntOperation&& bigIntOp, const char* errorMessage) And always call bigIntOp for BigInts. > Source/JavaScriptCore/runtime/Operations.h:547 > + RELEASE_AND_RETURN(scope, bigInt32(globalObject, leftNumeric.bigInt32AsInt32(), rightNumeric.bigInt32AsInt32())); So, then, you can write it as `ELEASE_AND_RETURN(scope, bigIntOp(globalObject, leftNumeric.bigInt32AsInt32(), rightNumeric.bigInt32AsInt32()));` > Source/JavaScriptCore/runtime/Operations.h:549 > + RELEASE_AND_RETURN(scope, mixedBigInt2(globalObject, leftNumeric.bigInt32AsInt32(), rightNumeric.asHeapBigInt())); `RELEASE_AND_RETURN(scope, bigIntOp(globalObject, leftNumeric.bigInt32AsInt32(), rightNumeric.asHeapBigInt()));` > Source/JavaScriptCore/runtime/Operations.h:552 > + RELEASE_AND_RETURN(scope, mixedBigInt1(globalObject, leftNumeric.asHeapBigInt(), rightNumeric.bigInt32AsInt32())); RELEASE_AND_RETURN(scope, bigIntOp(globalObject, leftNumeric.asHeapBigInt(), rightNumeric.bigInt32AsInt32())); > Source/JavaScriptCore/runtime/Operations.h:554 > + RELEASE_AND_RETURN(scope, heapBigInt(globalObject, leftNumeric.asHeapBigInt(), rightNumeric.asHeapBigInt())); RELEASE_AND_RETURN(scope, bigIntOp(globalObject, leftNumeric.asHeapBigInt(), rightNumeric.asHeapBigInt())); > Source/JavaScriptCore/runtime/Operations.h:559 > + RELEASE_AND_RETURN(scope, heapBigInt(globalObject, leftNumeric.asHeapBigInt(), rightNumeric.asHeapBigInt())); RELEASE_AND_RETURN(scope, bigIntOp(globalObject, leftNumeric.asHeapBigInt(), rightNumeric.asHeapBigInt())); > Source/JavaScriptCore/runtime/Operations.h:575 > + return arithmeticBinaryOp(globalObject, v1, v2, doubleOp, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in subtraction."_s); In that case, we do not need to pass 4 bigIntOp here. You can just call it, return arithmeticBinaryOp(globalObject, v1, v2, doubleOp, bigIntOp, "Invalid mix of BigInt and other type in subtraction."_s); > Source/JavaScriptCore/runtime/Operations.h:588 > + return arithmeticBinaryOp(globalObject, v1, v2, doubleOp, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in multiplication."_s); Ditto. > Source/JavaScriptCore/runtime/Operations.h:601 > + return arithmeticBinaryOp(globalObject, v1, v2, doubleOp, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in division."_s); Ditto. > Source/JavaScriptCore/runtime/Operations.h:614 > + return arithmeticBinaryOp(globalObject, v1, v2, doubleOp, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in remainder."_s); Ditto. > Source/JavaScriptCore/runtime/Operations.h:627 > + return arithmeticBinaryOp(globalObject, v1, v2, doubleOp, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in exponentiation."_s); Ditto. > Source/JavaScriptCore/runtime/Operations.h:774 > - Optional<uint32_t> leftUint32 = left.toUInt32AfterToNumeric(globalObject); > + auto leftNumeric = left.toBigIntOrInt32(globalObject); > RETURN_IF_EXCEPTION(scope, { }); > - Optional<uint32_t> rightUint32 = right.toUInt32AfterToNumeric(globalObject); > + auto rightNumeric = right.toBigIntOrInt32(globalObject); > RETURN_IF_EXCEPTION(scope, { }); > > - if (UNLIKELY(!leftUint32 || !rightUint32)) { > + if (UNLIKELY(!leftNumeric.isInt32() || !rightNumeric.isInt32())) { > throwTypeError(globalObject, scope, "BigInt does not support >>> operator"_s); > return { }; > } > > - return jsNumber(static_cast<int32_t>(leftUint32.value() >> (rightUint32.value() & 31))); > + uint32_t leftUint32 = static_cast<uint32_t>(leftNumeric.asInt32()); > + uint32_t rightUint32 = static_cast<uint32_t>(rightNumeric.asInt32()); > + > + return jsNumber(static_cast<int32_t>(leftUint32 >> (rightUint32 & 31))); Why is it changed? > Source/JavaScriptCore/runtime/Operations.h:778 > +ALWAYS_INLINE JSValue bitwiseBinaryOp(JSGlobalObject* globalObject, JSValue v1, JSValue v2, Int32Operation&& int32Op, JSValue (*bigInt32)(JSGlobalObject*, int32_t, int32_t), JSValue (*mixedBigInt1)(JSGlobalObject*, JSBigInt*, int32_t), JSValue (*mixedBigInt2)(JSGlobalObject*, int32_t, JSBigInt*), JSValue (*heapBigInt)(JSGlobalObject*, JSBigInt*, JSBigInt*), const char* errorMessage) Ditto. > Source/JavaScriptCore/runtime/Operations.h:824 > + return bitwiseBinaryOp(globalObject, v1, v2, int32Op, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in bitwise 'and' operation."_s); Ditto. > Source/JavaScriptCore/runtime/Operations.h:840 > + return bitwiseBinaryOp(globalObject, v1, v2, int32Op, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in bitwise 'or' operation."_s); Ditto. > Source/JavaScriptCore/runtime/Operations.h:855 > + return bitwiseBinaryOp(globalObject, v1, v2, int32Op, bigIntOp, bigIntOp, bigIntOp, bigIntOp, "Invalid mix of BigInt and other type in bitwise 'xor' operation."_s); Ditto. 1646364 10 397786 ysuzuki 2020-04-27 19:53:06 -0700 Comment on attachment 397786 patch r=me if EWS is happy :) 1646366 11 397785 saam 2020-04-27 19:58:26 -0700 Comment on attachment 397785 patch View in context: https://bugs.webkit.org/attachment.cgi?id=397785&action=review >> Source/JavaScriptCore/runtime/Operations.h:774 >> + return jsNumber(static_cast<int32_t>(leftUint32 >> (rightUint32 & 31))); > > Why is it changed? I think this is a bad rebase. Will revert 1646401 12 saam 2020-04-27 23:25:45 -0700 landed in: https://trac.webkit.org/changeset/260809/webkit 1646403 13 webkit-bug-importer 2020-04-27 23:26:18 -0700 <rdar://problem/62490218> 1646859 14 ysuzuki 2020-04-28 23:09:38 -0700 Committed r260876: <https://trac.webkit.org/changeset/260876> 1646860 15 ysuzuki 2020-04-28 23:14:45 -0700 Committed r260877: <https://trac.webkit.org/changeset/260877> 1646863 16 commit-queue 2020-04-28 23:21:38 -0700 Re-opened since this is blocked by bug 211165 1646879 17 saam 2020-04-28 23:57:07 -0700 This shouldn't have been re-opened. Build fix in: https://trac.webkit.org/changeset/260880/webkit 397536 2020-04-24 19:31:53 -0700 2020-04-27 14:45:52 -0700 WIP b-backup.diff text/plain 19916 saam SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9ydW50aW1lL0pTQmlnSW50LmNwcAo9PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09Ci0tLSBTb3VyY2UvSmF2YVNjcmlwdENvcmUvcnVudGltZS9KU0JpZ0ludC5jcHAJKHJldmlz aW9uIDI2MDY4OSkKKysrIFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9ydW50aW1lL0pTQmlnSW50LmNw cAkod29ya2luZyBjb3B5KQpAQCAtMjM3LDYgKzIzNyw0MSBAQCB2b2lkIEpTQmlnSW50OjppbnBs YWNlTXVsdGlwbHlBZGQoRGlnaXQgCiAgICAgaW50ZXJuYWxNdWx0aXBseUFkZCh0aGlzLCBmYWN0 b3IsIHN1bW1hbmQsIGxlbmd0aCgpLCB0aGlzKTsKIH0KIAorY2xhc3MgSGVhcEJpZ0ludEltcGwg eworcHVibGljOgorICAgIGV4cGxpY2l0IEhlYXBCaWdJbnRJbXBsKEpTQmlnSW50KiBiaWdJbnQp CisgICAgICAgIDogbV9iaWdJbnQoYmlnSW50KQorICAgIHsgfQorCisgICAgQUxXQVlTX0lOTElO RSBib29sIGlzWmVybygpIHsgcmV0dXJuIG1fYmlnSW50LT5pc1plcm8oKTsgfQorICAgIEFMV0FZ 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