Daniel Sanders 059e4b158c [mips][fp64] Add an implicit def to MFHC1 claiming that it reads the lower 32-bits of 64-bit FPR ... Summary: This is a white lie to workaround a widespread bug in the -mfp64 implementation. The problem is that none of the 32-bit fpu ops mention the fact that they clobber the upper 32-bits of the 64-bit FPR. This allows MFHC1 to be scheduled on the wrong side of most 32-bit FPU ops. Fixing that requires a major overhaul of the FPU implementation which can't be done right now due to time constraints. MFHC1 is one of two affected instructions. These instructions are the only FPU instructions that don't read or write the lower 32-bits. We therefore pretend that it reads the bottom 32-bits to artificially create a dependency and prevent the scheduler changing the behaviour of the code. The other instruction is MTHC1 which will be fixed once I've have found a failing test case for it. The testcase is test-suite/SingleSource/UnitTests/Vector/simple.c when given TARGET_CFLAGS="-mips32r2 -mfp64 -mmsa". Reviewers: jacksprat, matheusalmeida Reviewed By: jacksprat Differential Revision: http://llvm-reviews.chandlerc.com/D2966 llvm-svn: 203464		2014-03-10 15:01:57 +00:00
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Analysis	[TTI] There is actually no realistic way to pop TTI implementations off	2014-03-10 02:45:14 +00:00
AsmParser	IR: Change inalloca's grammar a bit	2014-03-09 06:41:58 +00:00
Bitcode	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
CodeGen	[C++11] Remove 'virtual' keyword from methods marked with 'override' keyword.	2014-03-10 05:29:18 +00:00
DebugInfo	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
ExecutionEngine	Make createObjectImage and createObjectImageFromFile static methods on the	2014-03-08 18:45:12 +00:00
IR	[PM] While I'm here, fix a few other clang-format issues. Pulls some	2014-03-10 02:12:14 +00:00
IRReader	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
LTO	[C++11] Add 'override' keyword to virtual methods that override their base class.	2014-03-08 07:51:20 +00:00
LineEditor	[CMake] Use LINK_LIBS instead of target_link_libraries().	2014-02-26 06:41:29 +00:00
Linker	[Layering] Sink Linker.h into a Linker subdirectory to make it	2014-03-06 03:42:23 +00:00
MC	MC: Appease the buildbots	2014-03-10 01:04:18 +00:00
Object	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
Option	Avoid buffer copies when a Twine already is a StringRef.	2013-12-03 18:18:28 +00:00
Support	[C++11] Remove 'virtual' keyword from methods marked with 'override' keyword.	2014-03-10 03:53:12 +00:00
TableGen	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
Target	[mips][fp64] Add an implicit def to MFHC1 claiming that it reads the lower 32-bits of 64-bit FPR	2014-03-10 15:01:57 +00:00
Transforms	SimplifyCFG: Simplify the weight scaling algorithm.	2014-03-09 14:42:55 +00:00
CMakeLists.txt	Introduce line editor library.	2014-01-31 23:46:14 +00:00
LLVMBuild.txt	Introduce line editor library.	2014-01-31 23:46:14 +00:00
Makefile	Introduce line editor library.	2014-01-31 23:46:14 +00:00