Commits
John McCall committed c6f42a03dbe
Don't use assert directly in the SIL verifier; use a
different routine which tries to print some extra context
before triggering an assert.
For now, this is just the instruction and its basic block,
but I think a nicer output would be something like
%0 = ...
%1 = ...
-> %2 = ...
%3 = ...
br ...
Swift SVN r4711