[PATCH] D34511: [mips][microMIPS] Extending size reduction pass with ADDIUSP and ADDIUR1SP

[Milena Vujosevic Janicic via Phabricator via llvm-commits]

milena.vujosevic.janicic created this revision.
Herald added a subscriber: arichardson.

The patch extends size reduction pass for MicroMIPS.
The following instructions are examined and transformed, if possible:
ADDIU instruction is transformed into 16-bit instruction ADDIUSP
ADDIU instruction is transformed into 16-bit instruction ADDIUR1SP
Function InRange is changed to avoid left shifting of negative values, since 
that caused some sanitizer tests to fail (so the previous patch 
https://reviews.llvm.org/D33887 was reverted).


https://reviews.llvm.org/D34511

Files:
  lib/Target/Mips/MicroMipsSizeReduction.cpp
  test/CodeGen/Mips/micromips-sizereduction/micromips-addiur1sp-addiusp.ll

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