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* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
* [DebugInfo] Move several private headers to include directoryYonghong Song2018-12-181-1/+1
| | | | | | | | | | | | | | | | | This patch moved the following files in lib/CodeGen/AsmPrinter/ AsmPrinterHandler.h DbgEntityHistoryCalculator.h DebugHandlerBase.h to include/llvm/CodeGen directory. Such a change will enable Target to extend DebugHandlerBase and emit Target specific debug info sections. Signed-off-by: Yonghong Song <yhs@fb.com> Differential Revision: https://reviews.llvm.org/D55755 llvm-svn: 349564
* Reland "[WebAssembly] LSDA info generation"Heejin Ahn2018-10-251-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This adds support for LSDA (exception table) generation for wasm EH. Wasm EH mostly follows the structure of Itanium-style exception tables, with one exception: a call site table entry in wasm EH corresponds to not a call site but a landing pad. In wasm EH, the VM is responsible for stack unwinding. After an exception occurs and the stack is unwound, the control flow is transferred to wasm 'catch' instruction by the VM, after which the personality function is called from the compiler-generated code. (Refer to WasmEHPrepare pass for more information on this part.) This patch: - Changes wasm.landingpad.index intrinsic to take a token argument, to make this 1:1 match with a catchpad instruction - Stores landingpad index info and catch type info MachineFunction in before instruction selection - Lowers wasm.lsda intrinsic to an MCSymbol pointing to the start of an exception table - Adds WasmException class with overridden methods for table generation - Adds support for LSDA section in Wasm object writer Reviewers: dschuff, sbc100, rnk Subscribers: mgorny, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D52748 llvm-svn: 345345
* Revert "[WebAssembly] LSDA info generation"Krasimir Georgiev2018-10-161-7/+4
| | | | | | | | This reverts commit r344575. Newly introduced test eh-lsda.ll.test fails with use-after-free under ASAN build. llvm-svn: 344639
* [WebAssembly] LSDA info generationHeejin Ahn2018-10-161-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This adds support for LSDA (exception table) generation for wasm EH. Wasm EH mostly follows the structure of Itanium-style exception tables, with one exception: a call site table entry in wasm EH corresponds to not a call site but a landing pad. In wasm EH, the VM is responsible for stack unwinding. After an exception occurs and the stack is unwound, the control flow is transferred to wasm 'catch' instruction by the VM, after which the personality function is called from the compiler-generated code. (Refer to WasmEHPrepare pass for more information on this part.) This patch: - Changes wasm.landingpad.index intrinsic to take a token argument, to make this 1:1 match with a catchpad instruction - Stores landingpad index info and catch type info MachineFunction in before instruction selection - Lowers wasm.lsda intrinsic to an MCSymbol pointing to the start of an exception table - Adds WasmException class with overridden methods for table generation - Adds support for LSDA section in Wasm object writer Reviewers: dschuff, sbc100, rnk Subscribers: mgorny, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D52748 llvm-svn: 344575
* [CodeGen] Fix inconsistent declaration parameter nameFangrui Song2018-07-161-2/+2
| | | | llvm-svn: 337200
* Use assembler expressions to lay out the EH LSDA.Rafael Espindola2018-02-091-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rely on the assembler to finalize the layout of the DWARF/Itanium exception-handling LSDA. Rather than calculate the exact size of each thing in the LSDA, use assembler directives: To emit the offset to the TTBase label: .uleb128 .Lttbase0-.Lttbaseref0 .Lttbaseref0: To emit the size of the call site table: .uleb128 .Lcst_end0-.Lcst_begin0 .Lcst_begin0: ... call site table entries ... .Lcst_end0: To align the type info table: ... action table ... .balign 4 .long _ZTIi .long _ZTIl .Lttbase0: Using assembler directives simplifies the compiler and allows switching the encoding of offsets in the call site table from udata4 to uleb128 for a large code size savings. (This commit does not change the encoding.) The combination of the uleb128 followed by a balign creates an unfortunate dependency cycle that the assembler must sometimes resolve either by padding an LEB or by inserting zero padding before the type table. See PR35809 or GNU as bug 4029. Patch by Ryan Prichard! llvm-svn: 324749
* [NFC] fix trivial typos in comments and documentsHiroshi Inoue2018-01-261-1/+1
| | | | | | "in in" -> "in", "on on" -> "on" etc. llvm-svn: 323508
* [CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; ↵Eugene Zelenko2017-10-101-10/+11
| | | | | | other minor fixes (NFC). llvm-svn: 315380
* Extract the method to begin and end a fragment in AsmPrinterHandler in their ↵Amaury Sechet2016-02-261-1/+0
| | | | | | | | | | | | | | own method. NFC Summary: This is extracted from D17555 Reviewers: davidxl, reames, sanjoy, MatzeB, pete Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D17580 llvm-svn: 262058
* [WinEH] Emit __C_specific_handler tables for the new IRReid Kleckner2015-10-011-4/+4
| | | | | | | | | | | | We emit denormalized tables, where every range of invokes in the same state gets a complete list of EH action entries. This is significantly simpler than trying to infer the correct nested scoping structure from the MI. Fortunately, for SEH, the nesting structure is really just a size optimization. With this, some basic __try / __except examples work. llvm-svn: 249078
* [AsmPrinter] Hide implementation detailsBenjamin Kramer2015-07-011-1/+1
| | | | | | NFC. llvm-svn: 241169
* Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)Alexander Kornienko2015-06-231-1/+1
| | | | | | Apparently, the style needs to be agreed upon first. llvm-svn: 240390
* Fixed/added namespace ending comments using clang-tidy. NFCAlexander Kornienko2015-06-191-1/+1
| | | | | | | | | | | | | The patch is generated using this command: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \ -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \ llvm/lib/ Thanks to Eugene Kosov for the original patch! llvm-svn: 240137
* Use 'override/final' instead of 'virtual' for overridden methodsAlexander Kornienko2015-04-111-1/+1
| | | | | | | | | | | | | | The patch is generated using clang-tidy misc-use-override check. This command was used: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py \ -checks='-*,misc-use-override' -header-filter='llvm|clang' \ -j=32 -fix -format http://reviews.llvm.org/D8925 llvm-svn: 234679
* [WinEH] Run cleanup handlers when an exception is thrownDavid Majnemer2015-03-301-1/+3
| | | | | | | | Generate tables in the .xdata section representing what actions to take when an exception is thrown. This currently fills in state for cleanups, catch handlers are still unfinished. llvm-svn: 233636
* Move the EH symbol to the asm printer and use it for the SJLJ case too.Rafael Espindola2015-03-171-5/+0
| | | | llvm-svn: 232475
* Replace a use of GetTempSymbol with createTempSymbol.Rafael Espindola2015-03-171-0/+5
| | | | | | This is cleaner and avoids a crash in a corner case. llvm-svn: 232471
* Remove dummy method implementations.Rafael Espindola2015-03-091-10/+0
| | | | | | | These are pure virtual in the base class, so the compiler checks that they are implemented. llvm-svn: 231673
* CodeGen support for x86_64 SEH catch handlers in LLVMReid Kleckner2015-01-141-4/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds handling for ExceptionHandling::MSVC, used by the x86_64-pc-windows-msvc triple. It assumes that filter functions have already been outlined in either the frontend or the backend. Filter functions are used in place of the landingpad catch clause type info operands. In catch clause order, the first filter to return true will catch the exception. The C specific handler table expects the landing pad to be split into one block per handler, but LLVM IR uses a single landing pad for all possible unwind actions. This patch papers over the mismatch by synthesizing single instruction BBs for every catch clause to fill in the EH selector that the landing pad block expects. Missing functionality: - Accessing data in the parent frame from outlined filters - Cleanups (from __finally) are unsupported, as they will require outlining and parent frame access - Filter clauses are unsupported, as there's no clear analogue in SEH In other words, this is the minimal set of changes needed to write IR to catch arbitrary exceptions and resume normal execution. Reviewers: majnemer Differential Revision: http://reviews.llvm.org/D6300 llvm-svn: 225904
* EH: Sink computation of local PadMap variable into function that uses itReid Kleckner2014-12-191-1/+0
| | | | | | No functionality change. llvm-svn: 224635
* Canonicalize header guards into a common format.Benjamin Kramer2014-08-131-2/+2
| | | | | | | | | | Add header guards to files that were missing guards. Remove #endif comments as they don't seem common in LLVM (we can easily add them back if we decide they're useful) Changes made by clang-tidy with minor tweaks. llvm-svn: 215558
* CodeGen: refactor DwarfExceptionSaleem Abdulrasool2014-06-111-0/+138
DwarfException served as a base class for exception handling directive emission. However, this is also used by other exception models (e.g. Win64EH). Rename this class to EHStreamer and split it out of DwarfException.h. NFC. Use the opportunity to fix up some of the documentation comments to match current LLVM style. Also rename some functions to conform better with current LLVM coding style. llvm-svn: 210622
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