Preston Gurd 2e2efd9600 Generic Bypass Slow Div ... - CodeGenPrepare pass for identifying div/rem ops - Backend specifies the type mapping using addBypassSlowDivType - Enabled only for Intel Atom with O2 32-bit -> 8-bit - Replace IDIV with instructions which test its value and use DIVB if the value is positive and less than 256. - In the case when the quotient and remainder of a divide are used a DIV and a REM instruction will be present in the IR. In the non-Atom case they are both lowered to IDIVs and CSE removes the redundant IDIV instruction, using the quotient and remainder from the first IDIV. However, due to this optimization CSE is not able to eliminate redundant IDIV instructions because they are located in different basic blocks. This is overcome by calculating both the quotient (DIV) and remainder (REM) in each basic block that is inserted by the optimization and reusing the result values when a subsequent DIV or REM instruction uses the same operands. - Test cases check for the presents of the optimization when calculating either the quotient, remainder, or both. Patch by Tyler Nowicki! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163150 91177308-0d34-0410-b5e6-96231b3b80d8		2012-09-04 18:22:17 +00:00
..
AddrModeMatcher.cpp	Add a little heuristic to Value::isUsedInBasicBlock to speed it up for small basic blocks.	2011-12-05 17:23:27 +00:00
BasicBlockUtils.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
BreakCriticalEdges.cpp	Second attempt at PR12573:	2012-04-30 10:44:54 +00:00
BuildLibCalls.cpp	remove tabs from my previous commit.	2012-08-01 17:13:28 +00:00
BypassSlowDivision.cpp	Generic Bypass Slow Div	2012-09-04 18:22:17 +00:00
CloneFunction.cpp	Move lib/Analysis/DebugInfo.cpp to lib/VMCore/DebugInfo.cpp and	2012-06-28 00:05:13 +00:00
CloneModule.cpp	Extend the IL for selecting TLS models (PR9788)	2012-06-23 11:37:03 +00:00
CMakeLists.txt	Generic Bypass Slow Div	2012-09-04 18:22:17 +00:00
CmpInstAnalysis.cpp	Convert assert(0) to llvm_unreachable	2012-02-07 05:05:23 +00:00
CodeExtractor.cpp	Fixed r158979.	2012-06-22 14:53:30 +00:00
DemoteRegToStack.cpp	Remove redundant comment. Use a more efficient datatype.	2012-02-17 02:12:54 +00:00
InlineFunction.cpp	Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h	2012-06-29 12:38:19 +00:00
InstructionNamer.cpp	Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which	2010-10-19 17:21:58 +00:00
LCSSA.cpp	There is no need to force DebugLoc on a PHI at this point.	2011-05-16 22:05:03 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
Local.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
LoopSimplify.cpp	LoopSimplify bug fix. Handle indirect loop back edges.	2012-03-20 21:24:52 +00:00
LoopUnroll.cpp	LoopUnroll: always check for NULL LoopPassManager	2012-06-05 17:51:05 +00:00
LoopUnrollRuntime.cpp	Fix typos found by http://github.com/lyda/misspell-check	2012-06-02 10:20:22 +00:00
LowerExpectIntrinsic.cpp	Move llvm/Support/MDBuilder.h to llvm/MDBuilder.h, to live with	2012-07-15 23:26:50 +00:00
LowerInvoke.cpp	[unwind removal] We no longer have 'unwind' instructions being generated, so	2012-02-06 21:16:41 +00:00
LowerSwitch.cpp	Reverted r156659, due to probable performance regressions, DenseMap should be used here:	2012-07-04 05:53:05 +00:00
Makefile
Mem2Reg.cpp	Remove outdated references to dominance frontiers.	2011-01-18 03:53:26 +00:00
ModuleUtils.cpp	Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h	2012-06-29 12:38:19 +00:00
PromoteMemoryToRegister.cpp	The DIBuilder class is just a wrapper around debug info creation	2012-06-29 08:32:07 +00:00
SimplifyCFG.cpp	test	2012-08-30 15:45:16 +00:00
SimplifyIndVar.cpp	Remove unused private fields found by clang's new -Wunused-private-field.	2012-06-06 18:25:08 +00:00
SimplifyInstructions.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
SSAUpdater.cpp	Fix undefined behavior (binding a reference to a dereferenced null pointer) if	2012-08-17 21:42:44 +00:00
UnifyFunctionExitNodes.cpp	[unwind removal] We no longer have 'unwind' instructions being generated, so	2012-02-06 21:16:41 +00:00
Utils.cpp	Add a new convenience pass for testing InstructionSimplify. Previously	2010-12-20 20:54:37 +00:00
ValueMapper.cpp	We need to map DebugLoc. It leads to Fuction * (through subprogram entry node) which should be appropriately mapped.	2011-08-04 20:02:18 +00:00