Dan Gohman 43873d4f73 Use range metadata instead of introducing selects. ... When GlobalOpt has determined that a GlobalVariable only ever has two values, it would convert the GlobalVariable to a boolean, and introduce SelectInsts at every load, to choose between the two possible values. These SelectInsts introduce overhead and other unpleasantness. This patch makes GlobalOpt just add range metadata to loads from such GlobalVariables instead. This enables the same main optimization (as seen in test/Transforms/GlobalOpt/integer-bool.ll), without introducing selects. The main downside is that it doesn't get the memory savings of shrinking such GlobalVariables, but this is expected to be negligible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204076 91177308-0d34-0410-b5e6-96231b3b80d8		2014-03-17 19:57:04 +00:00
..
Analysis	Consistent use of the noduplicate attribute.	2014-03-17 16:19:07 +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	Switch a number of loops in lib/CodeGen over to range-based for-loops, now that	2014-03-17 19:36:09 +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
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	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
MC	DebugInfo: Use MC line table file entry uniquing for non-asm input as well.	2014-03-17 18:13:58 +00:00
Object	[C++11] Introduce ObjectFile::symbols() to use range-based loops.	2014-03-17 07:28:19 +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	R600: Match sign_extend_inreg to BFE instructions	2014-03-17 18:58:11 +00:00
Transforms	Use range metadata instead of introducing selects.	2014-03-17 19:57:04 +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