Re: Simple recompute_reg_usage cleanup

[Michael Hayes <m dot hayes at elec dot canterbury dot ac dot nz>]

[oops wrong keystrokes..., here's the rest of my post...]

Jeffrey A Law writes:

 > Are these real insns or notes that are not included in a basic
 > block?

Barriers and notes.

 > Presumably this is happening because loop relies on just creating new insns
 > wherever it wants -- ie it doesn't try to readjust the cfg related
 > info.

No.  The problem arises with the manner that loop treats a function as
a list of insns but find_basic_blocks does not include barriers
etc. within a basic block.  Thus not every insn that loop finds can be
mapped back to a basic block.


Michael.