[PATCH] D27209: [mips] Fix compact branch hazard detection

[Simon Dardis via Phabricator via llvm-commits]

sdardis created this revision.
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In certain cases it is possible that transient instructions such as
%reg = IMPLICIT_DEF as a single instruction in a basic block to reach
the MipsHazardSchedule pass. This patch teaches MipsHazardSchedule to
properly look through such cases.


Repository:
  rL LLVM

https://reviews.llvm.org/D27209

Files:
  lib/Target/Mips/MipsHazardSchedule.cpp
  test/CodeGen/Mips/compactbranches/compact-branch-implicit-def.mir

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