https://llvm.org/bugs/show_bug.cgi?id=26716
Bug ID: 26716
Summary: Rpass-analysis=loop-vectorize warns on source
locations that are not in the preprocessed file
Product: clang
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: gonzalob...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
In a nutshell, I have a huge piece of code and was looking at the vectorization
analysis from -Rpass-analysis=loop-vectorize which produces a lot of output.
So I went on an ifdefed some large chunk of code out (my program still compiles
fine).
I get a couple of warnings by Rpass analysis that some loop cannot be
vectorized, but to my surprise it points to a line (and shows the line) within
the ifdefed out code.
First thought was, generate the preprocessed sources, delta it, and submit a
bug but... since the code is ifdefed out, the error cannot be reproduced from
the preprocessed sources.
I've been trying to come up with a minimal example that reproduces it for half
an hour without any luck. So this is all I got.
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