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...vm::MCRegisterInfo::getLLVMRegNum(unsigned int, bool) const /home/linux/llvm-7/llvm/lib/MC/MCRegisterInfo.cpp:88:0 #10 0x00000000004bd03e llvm::prettyPrintRegisterOp(llvm::raw_ostream&, unsigned char, unsigned long*, llvm::MCRegisterInfo const*, bool) /home/linux/llvm-7/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp:206:0 #11 0x00000000004bd226 llvm::DWARFExpression::Operation::print(llvm::raw_ostream&, llvm::DWARFExpression const*, llvm::MCRegisterInfo const*, bool) /home/linux/llvm-7/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp:237:0 #12 0x00000000004bd466 llvm::DWARFExpression::print(llvm::raw_os...

...signed int, >> bool) const /home/linux/llvm-7/llvm/lib/MC/MCRegisterInfo.cpp:88:0 >> #10 0x00000000004bd03e llvm::prettyPrintRegisterOp(llvm::raw_ostream&, >> unsigned char, unsigned long*, llvm::MCRegisterInfo const*, bool) >> /home/linux/llvm-7/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp:206:0 >> #11 0x00000000004bd226 >> llvm::DWARFExpression::Operation::print(llvm::raw_ostream&, >> llvm::DWARFExpression const*, llvm::MCRegisterInfo const*, bool) >> /home/linux/llvm-7/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp:237:0 >> #12 0x00000000004bd...

...l) const /home/linux/llvm-7/llvm/lib/MC/MCRegisterInfo.cpp:88:0 >>>> #10 0x00000000004bd03e llvm::prettyPrintRegisterOp(llvm::raw_ostream&, >>>> unsigned char, unsigned long*, llvm::MCRegisterInfo const*, bool) >>>> /home/linux/llvm-7/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp:206:0 >>>> #11 0x00000000004bd226 >>>> llvm::DWARFExpression::Operation::print(llvm::raw_ostream&, >>>> llvm::DWARFExpression const*, llvm::MCRegisterInfo const*, bool) >>>> /home/linux/llvm-7/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp:23...

...e-time & DWARF section size numbers), as well as a size analysis of stage2 builds of {llc, clang, lldb} in [1]. Djordje has also shared a nice location statistics comparison chart in [1], showing increased variable availability with entry values enabled. For my part, I instrumented lldb's DWARFExpression::Evaluate method to log instances in which a variable location is unavailable. I then used a script [4] to single-step through a stage2 RelWithDebInfo+entryvals clang binary as it was compiling sqlite3.c, printing local variables at each stop. Without entry values, lldb reported "variable n...

Hi folks, While building openmpi.4.0.0(Optimized debug build), using trunk clang we encountered a crash(assertion failure). Initially assertion seems trivial: [...] void llvm::DwarfExpression::addFragmentOffset(const llvm::DIExpression*): Assertion `FragmentOffset >= OffsetInBits && "overlapping or duplicate fragments"' failed. [...] But, narrowing to RC. We discovered "-O3 -enable-partial-inlining" pass which is doing some DebugInfo manipulation,...

...ection size numbers), as well as a size analysis of stage2 builds of {llc, clang, lldb} in [1]. > > Djordje has also shared a nice location statistics comparison chart in [1], showing increased variable availability with entry values enabled. > > For my part, I instrumented lldb's DWARFExpression::Evaluate method to log instances in which a variable location is unavailable. I then used a script [4] to single-step through a stage2 RelWithDebInfo+entryvals clang binary as it was compiling sqlite3.c, printing local variables at each stop. Without entry values, lldb reported "variable n...

...02 -88.2% tools/llvm-readobj/ObjDumper.cpp 0.43 0.10 -76.5% lib/MC/MCWinEH.cpp 0.51 0.13 -74.3% lib/Transforms/Vectorize/Vectorize.cpp 0.72 0.29 -59.7% tools/llvm-diff/DiffLog.cpp 0.58 0.26 -54.6% lib/Target/ARM/MCTargetDesc/ARMMachORelocationInfo.cpp 0.46 0.26 -44.1% lib/DebugInfo/DWARF/DWARFExpression.cpp 0.68 0.38 -43.3% lib/LTO/LTOModule.cpp 2.25 1.33 -41.1% lib/Target/TargetMachine.cpp 1.76 1.10 -37.8% Full list: Clang top 10 Filename Old New Delta tools/libclang/CXString.cpp 1.70 0.25 -85.2% lib/Tooling/CommonOptionsParser.cpp 1.69 0.55 -67.3% lib/AST/StmtViz.cpp...

...s/llvm-readobj/ObjDumper.cpp 0.43 0.10 -76.5% > lib/MC/MCWinEH.cpp 0.51 0.13 -74.3% > lib/Transforms/Vectorize/Vectorize.cpp 0.72 0.29 -59.7% > tools/llvm-diff/DiffLog.cpp 0.58 0.26 -54.6% > lib/Target/ARM/MCTargetDesc/ARMMachORelocationInfo.cpp 0.46 0.26 -44.1% > lib/DebugInfo/DWARF/DWARFExpression.cpp 0.68 0.38 -43.3% > lib/LTO/LTOModule.cpp 2.25 1.33 -41.1% > lib/Target/TargetMachine.cpp 1.76 1.10 -37.8% > > Full list: > <llvm.txt> > > > *Clang top 10* > *Filename Old New Delta* > tools/libclang/CXString.cpp 1.70 0.25 -85.2% > lib/Tooling/CommonOpti...

..._stack_value` instead of the current output `DW_OP_reg0 RSP`. The former is larger and gives less information, as both expressions evaluate to the same value but only the latter gives a location for the variable that can be modified by a debugger. This can be fixed with some pattern matching in the DwarfExpression class to cover this specific (albeit common) case. The current approach for the IR is not to add a new instruction, but to add a new metadata node that contains a list of IR value references (wrapped as ValueAsMetadata) and use it as the first argument to dbg.value. There is no syntactic incomp...

...tion size numbers), as well as a size analysis of stage2 builds of {llc, clang, lldb} in [1]. > > Djordje has also shared a nice location statistics comparison chart in [1], showing increased variable availability with entry values enabled. > > For my part, I instrumented lldb's DWARFExpression::Evaluate method to log instances in which a variable location is unavailable. I then used a script [4] to single-step through a stage2 RelWithDebInfo+entryvals clang binary as it was compiling sqlite3.c, printing local variables at each stop. Without entry values, lldb reported "variable n...

..._stack_value` instead of the current output `DW_OP_reg0 RSP`. The former is larger and gives less information, as both expressions evaluate to the same value but only the latter gives a location for the variable that can be modified by a debugger. This can be fixed with some pattern matching in the DwarfExpression class to cover this specific (albeit common) case. > > The current approach for the IR is not to add a new instruction, but to add a new metadata node that contains a list of IR value references (wrapped as ValueAsMetadata) and use it as the first argument to dbg.value. There is no syntact...

...s/llvm-readobj/ObjDumper.cpp 0.43 0.10 -76.5% > lib/MC/MCWinEH.cpp 0.51 0.13 -74.3% > lib/Transforms/Vectorize/Vectorize.cpp 0.72 0.29 -59.7% > tools/llvm-diff/DiffLog.cpp 0.58 0.26 -54.6% > lib/Target/ARM/MCTargetDesc/ARMMachORelocationInfo.cpp 0.46 0.26 -44.1% > lib/DebugInfo/DWARF/DWARFExpression.cpp 0.68 0.38 -43.3% > lib/LTO/LTOModule.cpp 2.25 1.33 -41.1% > lib/Target/TargetMachine.cpp 1.76 1.10 -37.8% > > Full list: > > <llvm.txt> > > > > *Clang top 10* > *Filename Old New Delta* > tools/libclang/CXString.cpp 1.70 0.25 -85.2% > lib/Tooling/...

...clang, lldb} in [1]. > >   > > Djordje has also shared a nice location statistics comparison chart in [1], showing increased variable availability with entry values enabled. > >   > > For my part, I instrumented lldb's DWARFExpression::Evaluate method to log instances in which a variable location is unavailable. I then used a script [4] to single-step through a stage2 RelWithDebInfo+entryvals clang binary as it was compiling sqlite3.c, printing local variables at each stop. Without entry values, lldb reported "variable n...

...0, at 9:02 AM, Tomar, Sourabh Singh <SourabhSingh.Tomar at amd.com> wrote: > > Hi folks, > > While building openmpi.4.0.0(Optimized debug build), using trunk clang we encountered a crash(assertion failure). > > Initially assertion seems trivial: > […] > void llvm::DwarfExpression::addFragmentOffset(const llvm::DIExpression*): Assertion `FragmentOffset >= OffsetInBits && "overlapping or duplicate fragments"' failed. > […] > > But, narrowing to RC. We discovered “-O3 -enable-partial-inlining” pass which is doing some DebugInfo manipulati...

> Yeah, because that decision can only be made much later in LLVM in AsmPrinter/DwarfExpression.cpp. > In DWARF, DW_OP_reg(x) is a register l-value, all others can either be l-values or r-values depending on whether there is a DW_OP_stack_value/DW_OP_implicit* at the end. Yes, it might not be clear but that's what I'm trying to say. Out of the non-empty DWARF locations, registe...

.../MCWinEH.cpp 0.49 0.15 -70.4% 43.9 21.4 -51.2% lib/Transforms/Vectorize/Vectorize.cpp 0.73 0.29 -60.7% 52.7 35.5 -32.6% tools/llvm-diff/DiffLog.cpp 0.59 0.27 -53.8% 50.7 33.7 -33.7% lib/Target/ARM/MCTargetDesc/ARMMachORelocationInfo.cpp 0.47 0.25 -46.7% 46.7 37.9 -18.9% lib/DebugInfo/DWARF/DWARFExpression.cpp 0.67 0.38 -43.5% 47.4 34.8 -26.7% lib/Transforms/Utils/ASanStackFrameLayout.cpp 0.52 0.32 -38.8% 41.7 33.7 -19.2% tools/llvm-dwp/llvm-dwp.cpp 2.48 1.53 -38.3% 92.5 55.2 -40.3% Full list: Clang top 10 Filename TimeOld TimeNew Delta SizeOld SizeNew SizeDelta tools/libclang/CXStri...

...9 0.15 -70.4% 43.9 21.4 -51.2% > lib/Transforms/Vectorize/Vectorize.cpp 0.73 0.29 -60.7% 52.7 35.5 -32.6% > tools/llvm-diff/DiffLog.cpp 0.59 0.27 -53.8% 50.7 33.7 -33.7% > lib/Target/ARM/MCTargetDesc/ARMMachORelocationInfo.cpp 0.47 0.25 -46.7% > 46.7 37.9 -18.9% > lib/DebugInfo/DWARF/DWARFExpression.cpp 0.67 0.38 -43.5% 47.4 34.8 -26.7% > lib/Transforms/Utils/ASanStackFrameLayout.cpp 0.52 0.32 -38.8% 41.7 33.7 > -19.2% > tools/llvm-dwp/llvm-dwp.cpp 2.48 1.53 -38.3% 92.5 55.2 -40.3% > > Full list: > <llvm.txt> > > *Clang top 10* > *Filename TimeOld TimeNew De...

...at 9:02 AM, Tomar, Sourabh Singh <SourabhSingh.Tomar at amd.com<mailto:SourabhSingh.Tomar at amd.com>> wrote: Hi folks, While building openmpi.4.0.0(Optimized debug build), using trunk clang we encountered a crash(assertion failure). Initially assertion seems trivial: […] void llvm::DwarfExpression::addFragmentOffset(const llvm::DIExpression*): Assertion `FragmentOffset >= OffsetInBits && "overlapping or duplicate fragments"' failed. […] But, narrowing to RC. We discovered “-O3 -enable-partial-inlining” pass which is doing some DebugInfo manipulation, later trigge...

...mper.cpp 0.43 0.10 -76.5% >> lib/MC/MCWinEH.cpp 0.51 0.13 -74.3% >> lib/Transforms/Vectorize/Vectorize.cpp 0.72 0.29 -59.7% >> tools/llvm-diff/DiffLog.cpp 0.58 0.26 -54.6% >> lib/Target/ARM/MCTargetDesc/ARMMachORelocationInfo.cpp 0.46 0.26 -44.1% >> lib/DebugInfo/DWARF/DWARFExpression.cpp 0.68 0.38 -43.3% >> lib/LTO/LTOModule.cpp 2.25 1.33 -41.1% >> lib/Target/TargetMachine.cpp 1.76 1.10 -37.8% >> >> Full list: >> >> <llvm.txt> >> >> >> >> *Clang top 10* >> *Filename Old New Delta* >> tools/libclang...

On Thu Jan 29 2015 at 10:22:17 AM Zachary Turner <zturner at google.com> wrote: > I've been working on adding pdb reading support to llvm. This started as > a tool for dumping info from a pdb (similar to llvm-dwarfdump), which has > been checked in and currently has limited support for dumping pdb. > > There's still more to be done on the pdb dumping tool, but at