OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity
llvm-project/llvm/lib/Transforms/Utils
History
Adrian Prantl 941fa7588b [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 
so we can stop using DW_OP_bit_piece with the wrong semantics.

The entire back story can be found here:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20161114/405934.html

The gist is that in LLVM we've been misinterpreting DW_OP_bit_piece's
offset field to mean the offset into the source variable rather than
the offset into the location at the top the DWARF expression stack. In
order to be able to fix this in a subsequent patch, this patch
introduces a dedicated DW_OP_LLVM_fragment operation with the
semantics that we used to apply to DW_OP_bit_piece, which is what we
actually need while inside of LLVM. This patch is complete with a
bitcode upgrade for expressions using the old format. It does not yet
fix the DWARF backend to use DW_OP_bit_piece correctly.

Implementation note: We discussed several options for implementing
this, including reserving a dedicated field in DIExpression for the
fragment size and offset, but using an custom operator at the end of
the expression works just fine and is more efficient because we then
only pay for it when we need it.

Differential Revision: https://reviews.llvm.org/D27361
rdar://problem/29335809

llvm-svn: 288683
 		2016-12-05 18:04:47 +00:00
..
ASanStackFrameLayout.cpp [asan] Replace std::to_string with llvm::to_string 2016-10-19 00:16:56 +00:00
AddDiscriminators.cpp Use the last 7 bits to represent the discriminator to fit it in 1 byte ULEB128 (NFC). 2016-11-08 16:32:32 +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 [BypassSlowDivision] Handle division by constant numerators better. 2016-11-16 00:44:47 +00:00
CMakeLists.txt [LoopUnroll] Implement profile-based loop peeling 2016-11-30 21:13:57 +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
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
…
EscapeEnumerator.cpp [tsan] Add support for C++ exceptions into TSan (call __tsan_func_exit during unwinding), LLVM part 2016-11-14 21:41:13 +00:00
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
FunctionComparator.cpp IR: Move NumElements field from {Array,Vector}Type to SequentialType. 2016-12-02 03:20:58 +00:00
FunctionImportUtils.cpp [ThinLTO] Stop importing constant global vars as copies in the backend 2016-12-02 01:02:30 +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 [tsan] Add support for C++ exceptions into TSan (call __tsan_func_exit during unwinding), LLVM part 2016-11-14 21:41:13 +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
LLVMBuild.txt
…
LibCallsShrinkWrap.cpp Give some helper classes/functions internal linkage. NFC. 2016-11-19 20:44:26 +00:00
Local.cpp [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 2016-12-05 18:04:47 +00:00
LoopSimplify.cpp [LoopSimplify] Preserve LCSSA when removing edges from unreachable blocks. 2016-11-18 21:01:12 +00:00
LoopUnroll.cpp [LoopUnroll] Implement profile-based loop peeling 2016-11-30 21:13:57 +00:00
LoopUnrollPeel.cpp [LoopUnroll] Implement profile-based loop peeling 2016-11-30 21:13:57 +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 Remove stale comment. NFC. 2016-12-03 01:59:13 +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 [PM] Change the static object whose address is used to uniquely identify 2016-11-23 17:53:26 +00:00
MetaRenamer.cpp
…
ModuleUtils.cpp Fix a typo. 2016-10-31 22:42:39 +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
SSAUpdater.cpp Use the range variant of find instead of unpacking begin/end 2016-08-11 22:21:41 +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 IR: Change the gep_type_iterator API to avoid always exposing the "current" type. 2016-12-02 02:24:42 +00:00
SimplifyIndVar.cpp [IndVars] Remove -liv-reduce 2016-06-05 18:01:12 +00:00
SimplifyInstructions.cpp fix formatting; NFC 2016-11-27 15:53:48 +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
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