[PATCH] D109950: [Clang] Enable IC/IF mode for __ibm128

[Qiu Chaofan via Phabricator via cfe-commits]

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As for 128-bit floating points on PPC, compiler should have three machine modes:

- IFmode, Always IBM extended double
- KFmode, Always IEEE 754R 128-bit floating point (implemented in D80374 <https://reviews.llvm.org/D80374>)
- TFmode, Matches the default for long double
  - If -mabi=ieeelongdouble, TFmode is IEEE 754R 128-bit floating point, and the L/l suffixes produces IEEE 754R constants
  - If -mabi=ibmlongdouble, TFmode is IBM extended double, and the L/l suffixes produces IBM extended double constants


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D109950

Files:
  clang/include/clang/AST/ASTContext.h
  clang/include/clang/Basic/TargetInfo.h
  clang/lib/AST/ASTContext.cpp
  clang/lib/Basic/TargetInfo.cpp
  clang/lib/Sema/SemaDeclAttr.cpp
  clang/test/Sema/attr-mode.c

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