[PATCH] D21370: [mips] Emit a JALR with $rd equal to $zero, instead of a JR in MIPS32R6.

[Vasileios Kalintiris via llvm-commits]

vkalintiris created this revision.
vkalintiris added reviewers: dsanders, sdardis.
vkalintiris added a subscriber: llvm-commits.
Herald added subscribers: sdardis, dsanders, dschuff, jfb.

JR is an alias of JALR with $rd=0 in the R6 ISA. Also, this fixes recursive
builds in MIPS32R6.

http://reviews.llvm.org/D21370

Files:
  lib/Target/Mips/MipsLongBranch.cpp
  test/CodeGen/Mips/longbranch.ll

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