[all-commits] [llvm/llvm-project] 3c94b2: [SystemZ] Bugfix in emitSelect()

[Jonas Paulsson via All-commits]

  Branch: refs/heads/release/10.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 3c94b2780126be9cf0e828bbd62729cdc5f421da
      https://github.com/llvm/llvm-project/commit/3c94b2780126be9cf0e828bbd62729cdc5f421da
  Author: Jonas Paulsson <paulsson at linux.vnet.ibm.com>
  Date:   2020-02-12 (Wed, 12 Feb 2020)

  Changed paths:
    M llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
    A llvm/test/CodeGen/SystemZ/multiselect-02.mir

  Log Message:
  -----------
  [SystemZ]  Bugfix in emitSelect()

When more than one SelectPseudo instruction is handled a new MBB is
returned. This must not be done if that would result in leaving an undhandled
isel pseudo behind in the original MBB.

Fixes https://bugs.llvm.org/show_bug.cgi?id=44849.

Review: Ulrich Weigand

Differential Revision: https://reviews.llvm.org/D74352

(cherry picked from commit 0311e28e9cc01a244faa774b8cab337b45404fa9)