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-llvm-diff - LLVM structural 'diff'
-==================================
-
-
-SYNOPSIS
---------
-
-
-**llvm-diff** [*options*] *module 1* *module 2* [*global name ...*]
-
-
-DESCRIPTION
------------
-
-
-**llvm-diff** compares the structure of two LLVM modules, primarily
-focusing on differences in function definitions.  Insignificant
-differences, such as changes in the ordering of globals or in the
-names of local values, are ignored.
-
-An input module will be interpreted as an assembly file if its name
-ends in '.ll';  otherwise it will be read in as a bitcode file.
-
-If a list of global names is given, just the values with those names
-are compared; otherwise, all global values are compared, and
-diagnostics are produced for globals which only appear in one module
-or the other.
-
-**llvm-diff** compares two functions by comparing their basic blocks,
-beginning with the entry blocks.  If the terminators seem to match,
-then the corresponding successors are compared; otherwise they are
-ignored.  This algorithm is very sensitive to changes in control flow,
-which tend to stop any downstream changes from being detected.
-
-**llvm-diff** is intended as a debugging tool for writers of LLVM
-passes and frontends.  It does not have a stable output format.
-
-
-EXIT STATUS
------------
-
-
-If **llvm-diff** finds no differences between the modules, it will exit
-with 0 and produce no output.  Otherwise it will exit with a non-zero
-value.
-
-
-BUGS
-----
-
-
-Many important differences, like changes in linkage or function
-attributes, are not diagnosed.
-
-Changes in memory behavior (for example, coalescing loads) can cause
-massive detected differences in blocks.