[all-commits] [llvm/llvm-project] 2d8e10: [PPCAsmPrinter] support 'L' output template for me...

[Nick Desaulniers via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 2d8e105db6bea10a6b96e4a094e73a87987ef909
      https://github.com/llvm/llvm-project/commit/2d8e105db6bea10a6b96e4a094e73a87987ef909
  Author: Nick Desaulniers <ndesaulniers at google.com>
  Date:   2020-06-15 (Mon, 15 Jun 2020)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
    M llvm/test/CodeGen/PowerPC/inlineasm-output-template.ll

  Log Message:
  -----------
  [PPCAsmPrinter] support 'L' output template for memory operands

Summary:
L is meant to support the second word used by 32b calling conventions for 64b arguments.

This is required for build 32b PowerPC Linux kernels after upstream
commit 334710b1496a ("powerpc/uaccess: Implement unsafe_put_user() using 'asm goto'")

Thanks for the report from @nathanchance, and reference to GCC's
implementation from @segher.

Fixes: pr/46186
Fixes: https://github.com/ClangBuiltLinux/linux/issues/1044

Reviewers: echristo, hfinkel, MaskRay

Reviewed By: MaskRay

Subscribers: MaskRay, wuzish, nemanjai, hiraditya, kbarton, steven.zhang, llvm-commits, segher, nathanchance, srhines

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D81767