[all-commits] [llvm/llvm-project] 7fbaa8: [PowerPC] Fix VSX clobbers of CSR registers

[nemanja-ibm via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 7fbaa8097ecc4309fec49db14fadac731ce53079
      https://github.com/llvm/llvm-project/commit/7fbaa8097ecc4309fec49db14fadac731ce53079
  Author: Nemanja Ivanovic <nemanjai at ca.ibm.com>
  Date:   2019-11-25 (Mon, 25 Nov 2019)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/test/CodeGen/PowerPC/CSR-fit.ll
    A llvm/test/CodeGen/PowerPC/inline-asm-vsx-clobbers.ll

  Log Message:
  -----------
  [PowerPC] Fix VSX clobbers of CSR registers

If an inline asm statement clobbers a VSX register that overlaps with a
callee-saved Altivec register or FPR, we will not record the clobber and will
therefore violate the ABI. This is clearly a bug so this patch fixes it.

Differential revision: https://reviews.llvm.org/D68576