fd41700962
In visitShuffleVectorInst there's an if block that's meant to turn shufflevector followed by bitcast into extractelement where possible. It assumes that there will never be bitcasts performed on vectors of ptr as such operations are almost always illegal, and ptrtoint instructions should be used instead. There is however an edge case where a bitcast instruction can be performed on a vector of type `<1 x ptr>` to turn it into type `ptr` In this edge case, the code initializes the variable `VecBitWidth` to 0. Then, when iterating over users that are bitcasts, an attempt is made to create a vector of size 0, which triggers and assert. This commit changes initialization of `VecBitWidth` to use datalayout to find the the size of the vector instead of getPrimitiveSizeInBits method which results in 0 for ptr and vectors of ptr.
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
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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