Refactor - Stops clobbering FRAME_PTR_REG in ANCHOR_INTERNAL_FUNCTION_CALL_REG
#637
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LucasSte
reviewed
Nov 26, 2024
| self.emit_ins(X86Instruction::mov(OperandSize::S64, reg, REGISTER_MAP[FRAME_PTR_REG])); | ||
| // REGISTER_SCRATCH contains self.pc, and we must store it for proper error handling. | ||
| // We can discard the value if callx succeeds, so we are not incrementing the stack pointer (RSP). | ||
| self.emit_ins(X86Instruction::store(OperandSize::S64, REGISTER_SCRATCH, RSP, X86IndirectAccess::OffsetIndexShift(-24, RSP, 0))); |
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Would it be possible to use another x86 register here? I'm concerned that adding loads and stores may impact performance.
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It is the same store that was inside the anchored subroutine before, just inlined here. The only thing this makes worse is more bytes emitted per callx.
Lichtso
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #637 +/- ##
==========================================
- Coverage 90.09% 89.99% -0.11%
==========================================
Files 22 22
Lines 9726 10314 +588
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+ Hits 8763 9282 +519
- Misses 963 1032 +69 ☔ View full report in Codecov by Sentry. |
LucasSte
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Nov 27, 2024
Lichtso
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