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SpiderMonkey optimizations

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This commit is contained in:
ownedbywuigi 2026-03-27 18:54:19 +00:00
commit 966fe69c7d
5 changed files with 451 additions and 65 deletions
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17
js/src/jit/IonAnalysis.cpp
View file

@ -17,6 +17,7 @@
#include "jit/LIR.h"
#include "jit/Lowering.h"
#include "jit/MIRGraph.h"
#include "jit/RangeAnalysis.h"
#include "vm/RegExpObject.h"
#include "vm/SelfHosting.h"
@ -2955,9 +2956,19 @@ jit::ExtractLinearInequality(MTest* test, BranchDirection direction,
MDefinition* lhs = compare->getOperand(0);
MDefinition* rhs = compare->getOperand(1);
// TODO: optimize Compare_UInt32
if (!compare->isInt32Comparison())
return false;
if (!compare->isInt32Comparison()) {
if (compare->compareType() != MCompare::Compare_UInt32)
return false;
Range* lhsRange = lhs->range();
Range* rhsRange = rhs->range();
if (!lhsRange || !rhsRange ||
!lhsRange->isFiniteNonNegative() ||
!rhsRange->isFiniteNonNegative())
{
return false;
}
}
MOZ_ASSERT(lhs->type() == MIRType::Int32);
MOZ_ASSERT(rhs->type() == MIRType::Int32);

16
js/src/jit/RangeAnalysis.cpp
View file

@ -174,12 +174,20 @@ RangeAnalysis::addBetaNodes()
if (!compare->isNumericComparison())
continue;
// TODO: support unsigned comparisons
if (compare->compareType() == MCompare::Compare_UInt32)
continue;
MDefinition* left = compare->getOperand(0);
MDefinition* right = compare->getOperand(1);
if (compare->compareType() == MCompare::Compare_UInt32) {
Range* leftRange = left->range();
Range* rightRange = right->range();
if (!leftRange || !rightRange ||
!leftRange->isFiniteNonNegative() ||
!rightRange->isFiniteNonNegative())
{
continue;
}
}
double bound;
double conservativeLower = NegativeInfinity<double>();
double conservativeUpper = PositiveInfinity<double>();