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LibJS: Pair-load asm Call stack bounds

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The asm Call fast path reads InterpreterStack::m_top and m_limit
back-to-back while checking whether the inline callee frame fits.

Those fields are adjacent, so we can load them together with one
paired load and keep the stack-size check otherwise unchanged.
This commit is contained in:
Andreas Kling
2026-04-14 09:49:54 +02:00
committed by Andreas Kling
parent fa931612e1
commit 44deea24fe
Notes: github-actions[bot] 2026-04-14 10:39:26 +00:00 
Author: https://github.com/awesomekling
Commit: https://github.com/LadybirdBrowser/ladybird/commit/44deea24fef
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/8912
1 changed files with 1 additions and 2 deletions
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3
Libraries/LibJS/Bytecode/AsmInterpreter/asmint.asm
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@@ -2090,9 +2090,8 @@ handler Call
load_vm t0
lea t0, [t0, VM_INTERPRETER_STACK]
load64 t6, [t0, INTERPRETER_STACK_TOP]
load_pair64 t6, t0, [t0, INTERPRETER_STACK_TOP], [t0, INTERPRETER_STACK_LIMIT]
add t2, t6
load64 t0, [t0, INTERPRETER_STACK_LIMIT]
branch_ge_unsigned t0, t2, .stack_ok
jmp .call_slow