llvm/lib
Sanjoy Das 40edbf130e Teach ScalarEvolution to sharpen range information.
If x is known to have the range [a, b) in a loop predicated by (icmp
ne x, a), its range can be sharpened to [a + 1, b).  Get
ScalarEvolution and hence IndVars to exploit this fact.
    
This change triggers an optimization to widen-loop-comp.ll, so it had
to be edited to get it to pass.

phabricator: http://reviews.llvm.org/D5639



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219834 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-15 19:25:28 +00:00
..
Analysis Teach ScalarEvolution to sharpen range information. 2014-10-15 19:25:28 +00:00
AsmParser Make CallingConv::ID an alias of "unsigned". 2014-09-10 18:00:17 +00:00
Bitcode correct const-ness with auto and dyn_cast 2014-10-15 17:45:13 +00:00
CodeGen Simplify handling of --noexecstack by using getNonexecutableStackSection. 2014-10-15 16:12:52 +00:00
DebugInfo Add couple of missing 'override' keyword. NFC. 2014-10-10 17:34:30 +00:00
ExecutionEngine [MCJIT] Replace memcpy with readBytesUnaligned in RuntimeDyldMachOI386. 2014-10-10 23:07:09 +00:00
IR DI: Make comments "brief"-er, NFC 2014-10-15 17:01:28 +00:00
IRReader Pass a && to getLazyBitcodeModule. 2014-09-03 17:31:46 +00:00
LineEditor [CMake] Use LINK_LIBS instead of target_link_libraries(). 2014-02-26 06:41:29 +00:00
Linker Merge alignment of common GlobalValue. 2014-09-09 17:48:18 +00:00
LTO LTO: Document the Boolean argument from r218784 2014-10-02 21:11:04 +00:00
MC Correctly handle references to section symbols. 2014-10-15 18:55:30 +00:00
Object Object, COFF: Move the VirtualSize/SizeOfRawData logic to getSectionSize 2014-10-09 08:42:31 +00:00
Option Add an overload of getLastArgNoClaim taking two OptSpecifiers. 2014-09-12 19:42:53 +00:00
ProfileData Reduce double set lookups. NFC. 2014-10-10 15:32:50 +00:00
Support Revert "r216914 - Revert: [APFloat] Fixed a bug in method 'fusedMultiplyAdd'" 2014-10-14 19:23:07 +00:00
TableGen Eliminate some deep std::vector copies. NFC. 2014-10-03 18:33:16 +00:00
Target Add LLVM_ATTRIBUTE_UNUSED to function currently just used in an assert 2014-10-15 19:24:14 +00:00
Transforms InstCombine: Narrow switch instructions using known bits. 2014-10-15 19:05:50 +00:00
CMakeLists.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
LLVMBuild.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
Makefile ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00