compiler/simplify_proc.m:
If a first attempt to analyse and optimize format calls fails
due to insufficient information about format strings and/or values,
then try the whole process again after pushing copies of the format calls,
and the conjuncts that precede them, into the last preceding branched
control structure (disjunction, switch, or if-then-else). This will
fix the problem if each branch does construct known format strings
and/or values, and is harmless if this is not the case.
tests/valid/format_after_switch.m:
A test case for the new capability.
tests/valid/Mmakefile:
tests/valid/Mercury.options:
Enable the new test case.
