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Lang Hames 7c8189c6d3 [X86] New and improved VZeroUpperInserter optimization. 
- Adds support for inserting vzerouppers before tail-calls.
  This is enabled implicitly by having MachineInstr::copyImplicitOps preserve
  regmask operands, which allows VZeroUpperInserter to see where tail-calls use
  vector registers.

- Fixes a bug that caused the previous version of this optimization to miss some
  vzeroupper insertion points in loops. (Loops-with-vector-code that followed
  loops-without-vector-code were mistakenly overlooked by the previous version).

- New algorithm never revisits instructions.

Fixes <rdar://problem/16228798>

llvm-svn: 204021
 		2014-03-17 01:22:54 +00:00
..
Analysis Remove some dead assignements found by scan-build 2014-03-15 22:13:15 +00:00
AsmParser Remove the linker_private and linker_private_weak linkages. 2014-03-13 23:18:37 +00:00
Bitcode Support: Make error_category's constructor public 2014-03-15 04:05:59 +00:00
CodeGen [X86] New and improved VZeroUpperInserter optimization. 2014-03-17 01:22:54 +00:00
DebugInfo Make some assertions on constant expressions static. 2014-03-15 18:47:07 +00:00
ExecutionEngine [C++11] Introduce SectionRef::relocations() to use range-based loops 2014-03-14 14:22:49 +00:00
IR Make some assertions on constant expressions static. 2014-03-15 18:47:07 +00:00
IRReader Replace OwningPtr<T> with std::unique_ptr<T>. 2014-03-06 05:51:42 +00:00
LTO Remove the linker_private and linker_private_weak linkages. 2014-03-13 23:18:37 +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: don't create a backtrace for diagnostics. 2014-03-14 22:41:58 +00:00
Object Support: Make error_category's constructor public 2014-03-15 04:05:59 +00:00
Option Avoid buffer copies when a Twine already is a StringRef. 2013-12-03 18:18:28 +00:00
Support Support: add support to identify WinCOFF/ARM objects 2014-03-13 07:02:35 +00:00
TableGen Replace OwningPtr<T> with std::unique_ptr<T>. 2014-03-06 05:51:42 +00:00
Target [X86] New and improved VZeroUpperInserter optimization. 2014-03-17 01:22:54 +00:00
Transforms Remove named Twine. 2014-03-16 01:36:18 +00:00
CMakeLists.txt Back out Profile library and dependent commits 2014-03-12 22:00:57 +00:00
LLVMBuild.txt Back out Profile library and dependent commits 2014-03-12 22:00:57 +00:00
Makefile Back out Profile library and dependent commits 2014-03-12 22:00:57 +00:00