4 Commits

Author	SHA1	Message	Date
Michael Kuperstein	f3163dc461	[X86] Better support for the MCU psABI (clang part) ... This adds support for the MCU psABI in a way different from r251223 and r251224, basically reverting most of these two patches. The problem with the approach taken in r251223/4 is that it only handled libcalls that originated from the backend. However, the mid-end also inserts quite a few libcalls and assumes these use the platform's default calling convention. The previous patch tried to insert inregs when necessary both in the FE and, somewhat hackily, in the CG. Instead, we now define a new default calling convention for the MCU, which doesn't use inreg marking at all, similarly to what x86-64 does. Differential Revision: http://reviews.llvm.org/D15055 llvm-svn: 256495	2015-12-28 14:39:54 +00:00
Andrey Bokhanko	94e1d5831b	[x86] Additional small fix for MCU psABI support ... This patch fixes one more thing in MCU psABI support: LongDoubleWidth should be set to 64. Differential Revision: http://reviews.llvm.org/D14285 llvm-svn: 252156	2015-11-05 12:43:09 +00:00
Andrey Bokhanko	158b8b898c	[x86] Front-end part of MCU psABI support ... This patch implements two things in front-end for MCU psABI support: 1) "long double type is the same as double." 2) "New predefined C/C++ pre-processor symbols: iamcu and iamcu__. Differential Revision: http://reviews.llvm.org/D14205 llvm-svn: 251786	2015-11-02 09:54:17 +00:00
Michael Kuperstein	6890188ea3	[X86] Mark inregs correctly for MCU psABI ... The MCU psABI calling convention is somewhat, but not quite, like -mregparm 3. In particular, the rules involving structs are different. Differential Revision: http://reviews.llvm.org/D13978 llvm-svn: 251224	2015-10-25 08:18:20 +00:00