== 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.
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