Daniel Sanders 58b6bfeb22 [mips][fp64] Add an implicit def to MTHC1 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 MTHC1 to be scheduled on the wrong side of most 32-bit FPU ops, particularly MTC1. Fixing that requires a major overhaul of the FPU implementation which can't be done right now due to time constraints. The testcase is SingleSource/Benchmarks/Misc/oourafft.c when given TARGET_CFLAGS='-mips32r2 mfp64 -mmsa'. Also correct the comment added in r203464 to indicate that two instructions were affected. Reviewers: matheusalmeida, jacksprat Reviewed By: matheusalmeida Differential Revision: http://llvm-reviews.chandlerc.com/D3029 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203659 91177308-0d34-0410-b5e6-96231b3b80d8		2014-03-12 13:35:43 +00:00
..
Analysis	IR: add a second ordering operand to cmpxhg for failure	2014-03-11 10:48:52 +00:00
AsmParser	IR: add a second ordering operand to cmpxhg for failure	2014-03-11 10:48:52 +00:00
Bitcode	IR: add a second ordering operand to cmpxhg for failure	2014-03-11 10:48:52 +00:00
CodeGen	Replace '#include ValueTypes.h' with forward declarations.	2014-03-12 08:00:24 +00:00
DebugInfo	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
ExecutionEngine	[ppc64] Patch in TOC restore code after all external function calls	2014-03-11 15:26:27 +00:00
IR	Remove copy ctors that did the same thing as the default one.	2014-03-11 11:32:49 +00:00
IRReader	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +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
LTO	[C++11] Add 'override' keyword to virtual methods that override their base class.	2014-03-08 07:51:20 +00:00
MC	Simplify a really complicated check for Arch == X86_64.	2014-03-11 21:22:57 +00:00
Object	Object: rename ARMV7 to ARMNT	2014-03-11 03:08:37 +00:00
Option	Avoid buffer copies when a Twine already is a StringRef.	2013-12-03 18:18:28 +00:00
Support	support: add a utility function to normalise path separators	2014-03-11 22:05:42 +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 MTHC1 claiming that it reads the lower 32-bits of 64-bit FPR	2014-03-12 13:35:43 +00:00
Transforms	Fix crash in PRE.	2014-03-11 15:07:32 +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