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903dd081e7
SimplifyCFG has two main folds for resumes - one when resume is directly using the landingpad, and the other one where resume is using a PHI node. While for the first case, we were already correctly ignoring all the PHI nodes, and both the debug info intrinsics and lifetime intrinsics, in the PHI-based-one, we weren't ignoring PHI's in the resume block, and weren't ignoring lifetime intrinsics. That is clearly a bug. On RawSpeed library, this results in +9.34% (+81) more invoke->call folds, -0.19% (-39) landing pads, -0.24% (-81) invoke instructions but +51 call instructions and -132 basic blocks. Though, the run-time performance impact appears to be within the noise. |
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