[PATCH] D64277: [X86][PowerPC] Support -mlong-double-128

[Fangrui Song via Phabricator via cfe-commits]

MaskRay created this revision.
MaskRay added reviewers: awilfox, echristo, erichkeane, hfinkel, jsji, majnemer, rnk, rsmith.
Herald added subscribers: cfe-commits, kbarton, nemanjai.
Herald added a project: clang.

This patch makes the driver option -mlong-double-128 available for X86
and PowerPC. The CC1 option -mlong-double-128 is available on all targets
for users to test on unsupported targets.

On PowerPC, -mlong-double-128 uses the IBM extended double format
because we don't support -mabi=ieeelongdouble.


Repository:
  rC Clang

https://reviews.llvm.org/D64277

Files:
  include/clang/Driver/Options.td
  lib/Basic/TargetInfo.cpp
  lib/Basic/Targets/PPC.cpp
  lib/Basic/Targets/X86.h
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/ppc64-long-double.cpp
  test/CodeGen/x86-long-double.cpp

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