[PATCH] D37899: [SystemZ] Implement shouldCoalesce() to help regalloc to avoid running out of registers with GR128 regs

[Jonas Paulsson via Phabricator via llvm-commits]

jonpa updated this revision to Diff 115832.
jonpa added a comment.

Test cases updated. As expected, there are now more register moves whenever the coalescer is disabled by this patch.


https://reviews.llvm.org/D37899

Files:
  lib/Target/SystemZ/SystemZRegisterInfo.cpp
  lib/Target/SystemZ/SystemZRegisterInfo.h
  test/CodeGen/SystemZ/atomic-load-05.ll
  test/CodeGen/SystemZ/atomic-store-05.ll
  test/CodeGen/SystemZ/cmpxchg-06.ll
  test/CodeGen/SystemZ/int-div-01.ll
  test/CodeGen/SystemZ/int-div-02.ll
  test/CodeGen/SystemZ/int-div-03.ll
  test/CodeGen/SystemZ/int-div-04.ll
  test/CodeGen/SystemZ/int-div-05.ll
  test/CodeGen/SystemZ/int-div-06.ll
  test/CodeGen/SystemZ/int-mul-08.ll
  test/CodeGen/SystemZ/int-mul-10.ll
  test/CodeGen/SystemZ/pr32372.ll
  test/CodeGen/SystemZ/regalloc-GR128.ll

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