Justin Lebar 188600d04d Don't leave unused divs/rems sitting around in BypassSlowDivision. ... Summary: This "pass" eagerly creates div and rem instructions even when only one is needed -- it relies on a later pass (machine DCE?) to clean them up. This is problematic not just from a cleanliness perspective (this pass is running during CodeGenPrepare, so should leave the IR in a better state), but it also creates a problem for instruction selection. If we always have a div+rem, isel will always select a divrem instruction (if possible), even when a single div or rem would do. Specifically, in NVPTX, we want to compute rem from the output of div, if available. But if a div is not available, we want to leave the rem alone. This transformation is overeager if div is always available. Because this code runs as part of CodeGenPrepare, it's nontrivial to write a test for this change. But this will effectively be tested by a later patch which adds the aforementioned change to NVPTX isel. Reviewers: tra Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D26088 llvm-svn: 285460		2016-10-28 21:43:54 +00:00
..
AddDiscriminators.cpp	Introduce updateDiscriminator interface to DILocation to make it cleaner assigning discriminators.	2016-10-26 15:48:45 +00:00
ASanStackFrameLayout.cpp	[asan] Replace std::to_string with llvm::to_string	2016-10-19 00:16:56 +00:00
BasicBlockUtils.cpp	Apply clang-tidy's modernize-loop-convert to most of lib/Transforms.	2016-06-26 12:28:59 +00:00
BreakCriticalEdges.cpp	[PM] Port BreakCriticalEdges to the new PM.	2016-07-22 18:04:25 +00:00
BuildLibCalls.cpp	Recommitting r275284: add support to inline __builtin_mempcpy	2016-07-29 18:23:18 +00:00
BypassSlowDivision.cpp	Don't leave unused divs/rems sitting around in BypassSlowDivision.	2016-10-28 21:43:54 +00:00
CloneFunction.cpp	[CloneFunction] Don't remove unrelated nodes from the CGSSC	2016-08-19 16:37:40 +00:00
CloneModule.cpp	Cloning: Also clone global variable attached metadata.	2016-10-26 02:57:33 +00:00
CMakeLists.txt	Add -strip-nonlinetable-debuginfo capability	2016-10-25 18:44:13 +00:00
CmpInstAnalysis.cpp	move decomposeBitTestICmp() to Transforms/Utils; NFC	2016-07-20 17:18:45 +00:00
CodeExtractor.cpp	CodeExtractor : Add ability to preserve profile data.	2016-08-02 02:15:45 +00:00
CtorUtils.cpp	[CtorUtils] Modernize. No functional changes intended.	2016-10-22 01:21:24 +00:00
DemoteRegToStack.cpp
Evaluator.cpp	Use the range variant of find instead of unpacking begin/end	2016-08-11 22:21:41 +00:00
FlattenCFG.cpp	[FlattenCFG] Simplify + remove unused variable. NFCI.	2016-08-05 20:53:35 +00:00
FunctionImportUtils.cpp	IR: Introduce local_unnamed_addr attribute.	2016-06-14 21:01:22 +00:00
GlobalStatus.cpp	Merge two if conditions into one. NFCI.	2016-10-24 19:41:47 +00:00
ImportedFunctionsInliningStatistics.cpp	Imported statistics types changes	2016-08-02 22:18:47 +00:00
InlineFunction.cpp	Inliner: Don't mark swifterror allocas with lifetime markers	2016-09-09 22:40:27 +00:00
InstructionNamer.cpp	Apply clang-tidy's modernize-loop-convert to most of lib/Transforms.	2016-06-26 12:28:59 +00:00
IntegerDivision.cpp	TransformUtils: Avoid getNodePtrUnchecked() in integer division, NFC	2016-02-21 20:14:29 +00:00
LCSSA.cpp	[LCSSA] Perform LCSSA verification only for the current loop nest.	2016-10-28 12:57:20 +00:00
LibCallsShrinkWrap.cpp	Check the number of Args in LibCallsShrinkWrap.	2016-10-24 16:50:12 +00:00
LLVMBuild.txt
Local.cpp	[DebugInfo] Add comments to phi dbg.value tracking code, NFC	2016-09-27 18:45:31 +00:00
LoopSimplify.cpp	[LCSSA] Implement linear algorithm for the isRecursivelyLCSSAForm	2016-10-11 13:37:22 +00:00
LoopUnroll.cpp	[LoopUnroll] Keep the loop test only on the first iteration of max-or-zero loops	2016-10-21 11:08:48 +00:00
LoopUnrollRuntime.cpp	Revert "[LoopUnroll] Properly update loop-info when cloning prologues and epilogues."	2016-09-08 03:51:30 +00:00
LoopUtils.cpp	[LCSSA] Perform LCSSA verification only for the current loop nest.	2016-10-28 12:57:20 +00:00
LoopVersioning.cpp	Rename LoopAccessAnalysis to LoopAccessLegacyAnalysis /NFC	2016-07-08 20:55:26 +00:00
LowerInvoke.cpp	[PM] Port LowerInvoke to the new pass manager	2016-08-12 17:28:27 +00:00
LowerSwitch.cpp	Use the range variant of remove_if instead of unpacking begin/end	2016-08-12 04:32:37 +00:00
Mem2Reg.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
MemorySSA.cpp	[MemorySSA] Add const to getClobberingMemoryAccess.	2016-10-28 19:22:46 +00:00
MetaRenamer.cpp
ModuleUtils.cpp	Utility functions for appending to llvm.used/llvm.compiler.used.	2016-10-25 23:53:31 +00:00
NameAnonGlobals.cpp	Use StringRef in Pass/PassManager APIs (NFC)	2016-10-01 02:56:57 +00:00
PromoteMemoryToRegister.cpp	Reapplying r281895 (and follow-up r281964) after fixing pr30468.	2016-09-22 14:13:25 +00:00
SanitizerStats.cpp	Fix Clang-tidy modernize-use-nullptr and modernize-use-override warnings; other minor fixes.	2016-01-26 18:48:36 +00:00
SimplifyCFG.cpp	Ignore debug info when making optimization decisions in SimplifyCFG.	2016-10-17 19:28:44 +00:00
SimplifyIndVar.cpp	[IndVars] Remove -liv-reduce	2016-06-05 18:01:12 +00:00
SimplifyInstructions.cpp	Explicitly require DominatorTreeAnalysis pass for instsimplify pass.	2016-09-06 22:17:16 +00:00
SimplifyLibCalls.cpp	Enable simplify libcalls for ARM PCS	2016-09-13 12:10:14 +00:00
SplitModule.cpp	Move instances of std::function.	2016-06-12 16:13:55 +00:00
SSAUpdater.cpp	Use the range variant of find instead of unpacking begin/end	2016-08-11 22:21:41 +00:00
StripGCRelocates.cpp	[StripGCRelocates] New pass to remove gc.relocates added by RS4GC	2016-10-21 18:43:16 +00:00
StripNonLineTableDebugInfo.cpp	Add -strip-nonlinetable-debuginfo capability	2016-10-25 18:44:13 +00:00
SymbolRewriter.cpp	[PM] Port SymbolRewriter to the new PM	2016-07-25 20:52:00 +00:00
UnifyFunctionExitNodes.cpp	Apply clang-tidy's modernize-loop-convert to most of lib/Transforms.	2016-06-26 12:28:59 +00:00
Utils.cpp	Add -strip-nonlinetable-debuginfo capability	2016-10-25 18:44:13 +00:00
ValueMapper.cpp	Do a sweep over move ctors and remove those that are identical to the default.	2016-10-20 12:20:28 +00:00