profiling: Look in RHS of rules for cost centre tickswip/t19894

There are some obscure situations where the RHS of a rule can contain a
tick which is not mentioned anywhere else in the program. If this
happens you end up with an obscure linker error. The solution is quite
simple, traverse the RHS of rules to also look for ticks. It turned out
to be easier to implement if the traversal was moved into CoreTidy
rather than at the start of code generation because there we still had
easy access to the rules.

./StreamD.o(.text+0x1b9f2): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc'
./MArray.o(.text+0xbe83): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc'
Main.o(.text+0x6fdb): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc'

0 files changed, 0 insertions, 0 deletions