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Previously a Bad node was returned which could hide problems and more
importantly you create new nodes (the BadBB) in an operation that apparently
only queries the graph.

The result of gs_matrix_gauss_seidel() never is negative.

If the solution of our eigenvalue problem results in unreasonable values
(like infinity), we now fall back to a loop-weight-based execution
frequency, or, if this is not sufficient, to a constant execution
frequency.

This ensures that only kept blocks get the extra weight for the keep edge.

It has been empty for nearly all systems. People who used to put stuff
in config.h can still create a config.h on their own and inject
-include (gcc) or /FI (msvc) into their CPPFLAGS.

Just state the copyright and the project the files belong to. You can
then find the COPYING file for the whole project.

The hashmap used to point to blocks which have already been deleted.

This makes it consistent with other firm analyse functions. Also removes
the unnecessary return value.

[r28127]

[r28030]

[r27924]

Some more cleanup: Put the return type and other specifiers on the same line as the declarator of a function declaration.

[r27155]

[r27153]

[r26536]

[r26513]

[r26492]

[r26458]

[r26222]