Qiu Chaofan fae0dfa642 [Clang] Add __ibm128 type to represent ppc_fp128 ... Currently, we have no front-end type for ppc_fp128 type in IR. PowerPC target generates ppc_fp128 type from long double now, but there's option (-mabi=(ieee|ibm)longdouble) to control it and we're going to do transition from IBM extended double-double ppc_fp128 to IEEE fp128 in the future. This patch adds type __ibm128 which always represents ppc_fp128 in IR, as what GCC did for that type. Without this type in Clang, compilation will fail if compiling against future version of libstdcxx (which uses __ibm128 in headers). Although all operations in backend for __ibm128 is done by software, only PowerPC enables support for it. There's something not implemented in this commit, which can be done in future ones: - Literal suffix for __ibm128 type. w/W is suitable as GCC documented. - __attribute__((mode(IF))) should be for __ibm128. - Complex __ibm128 type. Reviewed By: rjmccall Differential Revision: https://reviews.llvm.org/D93377		2021-09-06 18:00:58 +08:00
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python	[Clang] Add __ibm128 type to represent ppc_fp128	2021-09-06 18:00:58 +08:00
xml	[Wdocumentation] Implement \anchor	2019-12-21 14:52:21 +01:00