== Progress == - Monday was a public holiday - Studied benchmarks and analysed the rtl/asm for redundant sign extensions - Came up with simple test cases based on this (have 6 test cases now) - Looked at gcc tree documentations and helper macros; tried it by adding more debug dumps for types at tree level

== Plan == - Start with the algorithm for sign extension elimination - Skipping manual changes at source level/asm level to see the performance improvement for now.