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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-15 03:34:50 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-15 03:34:50 +0000 |
| commit | def92d1b8e9d373e2f6f27c366d578d97d8960c6 (patch) | |
| tree | 2ef34b9ad8bb9a9220e05d60352558b15f513894 /js/src/jit/MacroAssembler.cpp | |
| parent | Adding debian version 125.0.3-1. (diff) | |
| download | firefox-def92d1b8e9d373e2f6f27c366d578d97d8960c6.tar.xz firefox-def92d1b8e9d373e2f6f27c366d578d97d8960c6.zip | |
Merging upstream version 126.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit/MacroAssembler.cpp')
| -rw-r--r-- | js/src/jit/MacroAssembler.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/jit/MacroAssembler.cpp b/js/src/jit/MacroAssembler.cpp index 3b094d49dc..9fc4b96830 100644 --- a/js/src/jit/MacroAssembler.cpp +++ b/js/src/jit/MacroAssembler.cpp @@ -3169,6 +3169,8 @@ void MacroAssembler::emitMegamorphicCachedSetSlot( passABIArg(scratch2); callWithABI<Fn, NativeObject::growSlotsPure>(); storeCallPointerResult(scratch2); + + MOZ_ASSERT(!save.has(scratch2)); PopRegsInMask(save); branchIfFalseBool(scratch2, &cacheMiss); @@ -7803,6 +7805,24 @@ void MacroAssembler::loadArgumentsObjectLength(Register obj, Register output, rshift32(Imm32(ArgumentsObject::PACKED_BITS_COUNT), output); } +void MacroAssembler::loadArgumentsObjectLength(Register obj, Register output) { + // Get initial length value. + unboxInt32(Address(obj, ArgumentsObject::getInitialLengthSlotOffset()), + output); + +#ifdef DEBUG + // Assert length hasn't been overridden. + Label ok; + branchTest32(Assembler::Zero, output, + Imm32(ArgumentsObject::LENGTH_OVERRIDDEN_BIT), &ok); + assumeUnreachable("arguments object length has been overridden"); + bind(&ok); +#endif + + // Shift out arguments length and return it. + rshift32(Imm32(ArgumentsObject::PACKED_BITS_COUNT), output); +} + void MacroAssembler::branchTestArgumentsObjectFlags(Register obj, Register temp, uint32_t flags, Condition cond, |