Evan Cheng 86dd733bc8 Some enhancements for memcpy / memset inline expansion. ... 1. Teach it to use overlapping unaligned load / store to copy / set the trailing bytes. e.g. On 86, use two pairs of movups / movaps for 17 - 31 byte copies. 2. Use f64 for memcpy / memset on targets where i64 is not legal but f64 is. e.g. x86 and ARM. 3. When memcpy from a constant string, do *not* replace the load with a constant if it's not possible to materialize an integer immediate with a single instruction (required a new target hook: TLI.isIntImmLegal()). 4. Use unaligned load / stores more aggressively if target hooks indicates they are "fast". 5. Update ARM target hooks to use unaligned load / stores. e.g. vld1.8 / vst1.8. Also increase the threshold to something reasonable (8 for memset, 4 pairs for memcpy). This significantly improves Dhrystone, up to 50% on ARM iOS devices. rdar://12760078 llvm-svn: 169791		2012-12-10 23:21:26 +00:00
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Analysis	Optimistically analyse Phi cycles	2012-12-10 23:02:41 +00:00
Archive	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
AsmParser	Reorganize FastMathFlags to be a wrapper around unsigned, and streamline some interfaces.	2012-12-09 21:12:04 +00:00
Bitcode	Reorganize FastMathFlags to be a wrapper around unsigned, and streamline some interfaces.	2012-12-09 21:12:04 +00:00
CodeGen	Some enhancements for memcpy / memset inline expansion.	2012-12-10 23:21:26 +00:00
DebugInfo	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
ExecutionEngine	Adjust JIT target triple on OS X to match the current architecture.	2012-12-05 19:09:13 +00:00
Linker	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
MC	Defer call to InitSections until after MCContext has been initialized. If	2012-12-10 22:49:11 +00:00
Object	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
Option	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00
Support	Make NaCl naming consistent. The triple OSType is called NaCl and is represented	2012-12-04 18:37:26 +00:00
TableGen	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
Target	Some enhancements for memcpy / memset inline expansion.	2012-12-10 23:21:26 +00:00
Transforms	Enable the loop vectorizer only on O2 and above. (Still disabled by default)	2012-12-10 21:45:01 +00:00
VMCore	s/AttrListPtr/AttributeSet/g to better label what this class is going to be in the near future.	2012-12-07 23:16:57 +00:00
CMakeLists.txt	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00
LLVMBuild.txt	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00
Makefile	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00