[PATCH] D37730: [PowerPC] eliminate unconditional branch to the next instruction

Tue Sep 12 00:57:05 PDT 2017

inouehrs created this revision.

This patch makes `analyzeBranch` eliminate unconditional branch to the next instruction.

After basic blocks are re-organized by optimizers, such as machine block placement, a BB may end with an unconditional branch to the next (fallthrough) BB. This patch removes such redundant branch instruction.

https://reviews.llvm.org/D37730

Files:
  lib/Target/PowerPC/PPCInstrInfo.cpp
  test/CodeGen/PowerPC/2016-04-28-setjmp.ll
  test/CodeGen/PowerPC/atomics-regression.ll
  test/CodeGen/PowerPC/sjlj.ll

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