Daniel Sanders 24a071b8c5 [mips] Add support for -modd-spreg/-mno-odd-spreg ... Summary: When -mno-odd-spreg is in effect, 32-bit floating point values are not permitted in odd FPU registers. The option also prohibits 32-bit and 64-bit floating point comparison results from being written to odd registers. This option has three purposes: * It allows support for certain MIPS implementations such as loongson-3a that do not allow the use of odd registers for single precision arithmetic. * When using -mfpxx, -mno-odd-spreg is the default and this allows us to statically check that code is compliant with the O32 FPXX ABI since mtc1/mfc1 instructions to/from odd registers are guaranteed not to appear for any reason. Once this has been established, the user can then re-enable -modd-spreg to regain the use of all 32 single-precision registers. * When using -mfp64 and -mno-odd-spreg together, an O32 extension named O32 FP64A is used as the ABI. This is intended to provide almost all functionality of an FR=1 processor but can also be executed on a FR=0 core with the assistance of a hardware compatibility mode which emulates FR=0 behaviour on an FR=1 processor. * Added '.module oddspreg' and '.module nooddspreg' each of which update the .MIPS.abiflags section appropriately * Moved setFpABI() call inside emitDirectiveModuleFP() so that the caller doesn't have to remember to do it. * MipsABIFlags now calculates the flags1 and flags2 member on demand rather than trying to maintain them in the same format they will be emitted in. There is one portion of the -mfp64 and -mno-odd-spreg combination that is not implemented yet. Moves to/from odd-numbered double-precision registers must not use mtc1. I will fix this in a follow-up. Differential Revision: http://reviews.llvm.org/D4383 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212717 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-10 13:38:23 +00:00
..
Analysis	Improve BasicAA CS-CS queries	2014-07-08 23:16:49 +00:00
Assembler	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
Bindings	Reduce verbiage of lit.local.cfg files	2014-06-09 22:42:55 +00:00
Bitcode	Add some test files for r211710.	2014-06-25 15:41:39 +00:00
BugPoint
CodeGen	[mips] Add support for -modd-spreg/-mno-odd-spreg	2014-07-10 13:38:23 +00:00
DebugInfo	[SystemZ] Fix FPR dwarf numbering	2014-07-10 10:45:11 +00:00
ExecutionEngine	Fix this test to not write to the source tree, and instead to write to	2014-06-28 05:18:49 +00:00
Feature	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
FileCheck
Instrumentation	[dfsan] Handle bitcast aliases.	2014-07-10 01:30:39 +00:00
Integer
JitListener
Linker	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
LTO	Change the default input for llvm-nm to be a.out instead of standard input	2014-06-23 20:27:53 +00:00
MC	[mips] Add support for -modd-spreg/-mno-odd-spreg	2014-07-10 13:38:23 +00:00
Object	Changed the lvm-nm alias "-s" for -print-armap to "-M".	2014-07-08 23:47:31 +00:00
Other	IR: Fold away compares between GV GEPs and GVs	2014-07-04 22:05:26 +00:00
TableGen	Fix error in tablegen when either operand of !if is an empty list.	2014-06-10 20:10:08 +00:00
tools	[llvm-readobj] Fix output of MIPS GOT without local and global entries.	2014-07-05 19:28:49 +00:00
Transforms	A test case for not asserting in isDereferenceablePointer upon unsized types	2014-07-10 07:04:37 +00:00
Unit	Let test/Unit/lit.cfg add config.shlibdir to $PATH on DLL platforms like cygming.	2014-07-04 05:11:55 +00:00
Verifier	IR: Add COMDATs to the IR	2014-06-27 18:19:56 +00:00
YAMLParser
.clang-format
CMakeLists.txt	OK, NAKAMURA Takumi beat me to this change. So backing out my addition of	2014-05-19 23:26:51 +00:00
lit.cfg	Delete utils/FileUpdate.	2014-06-23 17:58:39 +00:00
lit.site.cfg.in
Makefile	lld test for configure & make	2014-06-06 09:06:25 +00:00
Makefile.tests
TestRunner.sh