[all-commits] [llvm/llvm-project] 22dab2: Revert "[SelectionDAG] Remove unused FP constant i...

[Qiu Chaofan via All-commits]

  Branch: refs/heads/release/11.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 22dab218407e159631fd0689cb4412646b51515a
      https://github.com/llvm/llvm-project/commit/22dab218407e159631fd0689cb4412646b51515a
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2020-09-15 (Tue, 15 Sep 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    R llvm/test/CodeGen/X86/pr47517.ll

  Log Message:
  -----------
  Revert "[SelectionDAG] Remove unused FP constant in getNegatedExpression"

2508ef01 doesn't totally fix the issue since we did not handle the case
when unused temporary negated result is the same with the result, which
is found by address sanitizer.

(cherry picked from commit e1669843f2aaf1e4929afdd8f125c14536d27664)