bf2a97a0dd
It seems the known bits handling added in 686987a540bc176bceaad43ffe530cb3e88796d5 is insufficient to perform many range based optimizations. For some reason computeConstantRange doesn't fall back on KnownBits, and has a separate, less used form which tries to use computeKnownBits.
The LLVM Compiler Infrastructure
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This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
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