Rafael Auler 21eb2139ee Introduce pass to reduce jump tables footprint ...

Summary:
Add a pass to identify indirect jumps to jump tables and reduce
their entries size from 8 to 4 bytes. For PIC jump tables, it will
convert the PIC code to non-PIC (since BOLT only processes static code,
it makes no sense to use expensive PIC-style jumps in static code). Add
corresponding improvements to register scavenging pass and add a MCInst
matcher machinery.

(cherry picked from FBD6421582)

2017-11-02 00:30:11 -07:00

152 KiB

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