11 lines
694 B
Plaintext
11 lines
694 B
Plaintext
General:
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- Use custom __builtin_offsetof definition to preserve the call until lower gimple
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Approach:
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- At the very last point of gimple (after gimple optimizations), recognize accesses
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- Build a mapping of statement location (multiple statements share) to a semantic graph (or tree)
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- Right after expansion to RTL, pattern match set of RTL instructions with same location to graph
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- Add notes (persistent over RTL transformations) to any RTL instruction that is relevant
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- After all RTL optimizations, add assembly labels before relevant RTL instructions (identified by notes)
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- Might need an additional early pass to prevent COMPONENT_REFs to constant/static stuff from being folded early
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