"Rohit Arul Raj" <[EMAIL PROTECTED]> writes: > 1. How does the life1 pass gets the register usage information from > the gcse pass?
The GCSE pass does not generate any register usage informatoin. The life1 pass computes register usage by looking at the RTL. > 2. From which other passes and how, the information about registers > used can be determined by looking at the RTL dump of the corresponding > pass? You can always determine register usage by simply looking at the RTL and seeing which registers it uses. There are a couple of special cases relating to exception handling. > 3. Any documentation regarding the above? Not in any one place. Ian
