[all-commits] [llvm/llvm-project] a8eb6a: [PowerPC] Treat 'Z' inline asm constraint as a tru...

[Nemanja Ivanovic via All-commits]

  Branch: refs/heads/release/10.x
  Home:   https://github.com/llvm/llvm-project
  Commit: a8eb6a5db7f92bd13379ba51065208ce4ccace19
      https://github.com/llvm/llvm-project/commit/a8eb6a5db7f92bd13379ba51065208ce4ccace19
  Author: Nemanja Ivanovic <nemanja.i.ibm at gmail.com>
  Date:   2020-06-22 (Mon, 22 Jun 2020)

  Changed paths:
    M clang/lib/Basic/Targets/PPC.h
    M clang/test/CodeGen/ppc64-inline-asm.c

  Log Message:
  -----------
  [PowerPC] Treat 'Z' inline asm constraint as a true memory constraint

We currently emit incorrect codegen for this constraint because we set it as a
constraint that allows registers. This will cause the value to be copied to the
stack and that address to be passed as the address. This is not what we want.

Fixes: https://bugs.llvm.org/show_bug.cgi?id=42762

Differential revision: https://reviews.llvm.org/D77542

(cherry picked from commit aede24ecaa08db806fb173faf2de9cff95df8cee)