[PATCH] D64283: [PowerPC] Support -mabi=ieeelongdouble and -mabi=ibmlongdouble

[Fangrui Song via Phabricator via cfe-commits]

MaskRay created this revision.
MaskRay added reviewers: awilfox, dalias, echristo, hfinkel, nemanjai, jsji, kbarton.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
MaskRay added parent revisions: D64282: [PowerPC] Support fp128 libcalls, D64277: [X86][PowerPC] Support -mlong-double-128.

In -mlong-double-128 mode (default on Linux glibc),

- -mabi=ibmlongdouble (default): use IBM extended double format for long double
- -mabi=ieeelongdouble: use IEEE 754 quadruple-precision format for long double


Repository:
  rC Clang

https://reviews.llvm.org/D64283

Files:
  include/clang/Basic/LangOptions.def
  include/clang/Driver/Options.td
  lib/Basic/Targets/PPC.cpp
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/ppc64-long-double.cpp
  test/Driver/ppc-abi.c

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