Question
Loop Unrolling and Vectorization Interaction in LLVM IR
Ash Echo
0 reputation · 15 Aug 2023, 04:05 UTC
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LLVM IR Optimization Limits
The interaction between aggressive loop unrolling and vectorization within complex loops presents an unresolved behavior.
The optimization pipeline is designed for transformation, not imperative retry logic.
Verification Context
Considering LLVM's established IR data-flow analysis capabilities, what is the documented boundary for write redundancy elimination when these two passes interact?
- Does the optimization pipeline guarantee write deduplication across unrolled iterations?
- What specific IR patterns trigger unexpected write duplication under high optimization levels?
llvm