Basic Block Flags

FB_ALIGNED

The BBL layout routine has determined that this BBL should be aligned because it might a frequent target of jumps.

FB_CRIT_PATH

When we pathinline a function all inlined basic blocks should be treated as if they are part of the critical path for subsequent inlines. This is what this flag achieves.

FB_CRITICAL

The basic block is crtical, ie. it is either hot connects hot basic blocks with the function init or exit node.

FB_SCHEDULED

Used by the scheduler (should not be visible)

FB_LOOP_HEADER

Basic block is loopheader. Set by the Loopanalysis routine.

FB_CRIT_ESC

Basic block is a callsite leaving the inlined path

FB_PROG_ENTRY

The bbl is the program entry point.

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