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path: root/include/llvm/MC/MCStreamer.h
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* DebugInfo: Avoid creating unnecessary/empty line tables and remove the ↵David Blaikie2014-04-01
| | | | | | | | | | | | special case of '0' in DwarfCompileUnit::initStmtList by just always using a label difference This moves one case of raw text checking down into the MCStreamer interfaces in the form of a virtual function, even if we ultimately end up consolidating on the one-or-many line tables issue one day, this is nicer in the interim. This just generally streamlines a bunch of use cases into a common code path. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205287 91177308-0d34-0410-b5e6-96231b3b80d8
* MachO: Add linker-optimisation hint framework to MC.Tim Northover2014-03-29
| | | | | | | | Another part of the ARM64 backend (so tests will be following soon). This is currently used by the linker to relax adrp/ldr pairs into nops where possible, though could well be more broadly applicable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205084 91177308-0d34-0410-b5e6-96231b3b80d8
* MachO: allow each section to have a linker-private symbolTim Northover2014-03-29
| | | | | | | | | The upcoming ARM64 backend doesn't have section-relative relocations, so we give each section its own symbol to provide this functionality. Of course, it doesn't need to appear in the final executable, so linker-private is the best kind for this purpose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205081 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark alias symbols as microMIPS if necessary. Differential Revision: ↵Zoran Jovanovic2014-03-20
| | | | | | http://llvm-reviews.chandlerc.com/D3080 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204323 91177308-0d34-0410-b5e6-96231b3b80d8
* Darwin: Add assembler directives to create version-min load commands.Jim Grosbach2014-03-18
| | | | | | | | | | | | Allow object files to be tagged with a version-min load command for iOS or MacOSX. Teach macho-dump to understand the version-min load commands for testcases. rdar://11337778 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204190 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: Improve reuse of file table entries in asm debug infoDavid Blaikie2014-03-17
| | | | | | | | | | | | | | | | | The previous deduping strategy was woefully inadequate - it only considered the most recent file used and avoided emitting a duplicate in that case - never considering the a/b/a scenario. It was also lacking when it came to directory paths as the previous filename would never match the current if the filename had been split into file and directory components. This change builds caching functionality into the line table at the lowest level in an optional form (a file number of 0 indicates that one should be chosen and returned) and will eventually be reused by the normal source level debugging DWARF emission. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204027 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Add 'override' keyword to virtual methods that override their base ↵Craig Topper2014-03-07
| | | | | | class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203220 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace OwningPtr<T> with std::unique_ptr<T>.Ahmed Charles2014-03-06
| | | | | | | | | | This compiles with no changes to clang/lld/lldb with MSVC and includes overloads to various functions which are used by those projects and llvm which have OwningPtr's as parameters. This should allow out of tree projects some time to move. There are also no changes to libs/Target, which should help out of tree targets have time to move, if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
* Always print the implicit .text at the start of an asm file.Rafael Espindola2014-03-05
| | | | | | | | | | | | | | | | | Before llvm-mc would print it, but llc was assuming that it would produce another section changing directive before one was needed. That assumption is false with inline asm. Fixes PR19049. Another option would be to always create the section, but in the asm printer avoid printing sections changes during initialization. That would work, but * We do use the fact that llvm-mc prints it in testing. The tests can be changed if needed. * A quick poll on IRC suggest that most developers prefer the implicit .text to be printed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203001 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove MCPureStreamer.Rafael Espindola2014-02-27
| | | | | | | We moved MCJIT to use native object formats a long time ago and R600 now uses ELF, so it was dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202408 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove ↵Daniel Sanders2014-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | hasRawTextSupport() call Summary: AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for targets with mature MC support. Such targets will always parse the inline assembly (even when emitting assembly). Targets without mature MC support continue to use EmitRawText() for assembly output. The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler to parse inline assembly (even when emitting assembly output). UseIntegratedAs is set to true for targets that consider any failure to parse valid assembly to be a bug. Target specific subclasses generally enable the integrated assembler in their constructor. The default value can be overridden with -no-integrated-as. All tests that rely on inline assembly supporting invalid assembly (for example, those that use mnemonics such as 'foo' or 'hello world') have been updated to disable the integrated assembler. Changes since review (and last commit attempt): - Fixed test failures that were missed due to configuration of local build. (fixes crash.ll and a couple others). - Fixed tests that happened to pass because the local build was on X86 (should fix 2007-12-17-InvokeAsm.ll) - mature-mc-support.ll's should no longer require all targets to be compiled. (should fix ARM and PPC buildbots) - Object output (-filetype=obj and similar) now forces the integrated assembler to be enabled regardless of default setting or -no-integrated-as. (should fix SystemZ buildbots) Reviewers: rafael Reviewed By: rafael CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2686 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201333 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove support for not using .loc directives.Rafael Espindola2014-02-05
| | | | | | Clang itself was not using this. The only way to access it was via llc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200862 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR18345: ldr= pseudo instruction produces incorrect code when using in ↵David Peixotto2014-02-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | inline assembly This patch fixes the ldr-pseudo implementation to work when used in inline assembly. The fix is to move arm assembler constant pools from the ARMAsmParser class to the ARMTargetStreamer class. Previously we kept the assembler generated constant pools in the ARMAsmParser object. This does not work for inline assembly because a new parser object is created for each blob of inline assembly. This patch moves the constant pools to the ARMTargetStreamer class so that the constant pool will remain alive for the entire code generation process. An ARMTargetStreamer class is now required for the arm backend. There was no existing implementation for MachO, only Asm and ELF. Instead of creating an empty MachO subclass, we decided to make the ARMTargetStreamer a non-abstract class and provide default (llvm_unreachable) implementations for the non constant-pool related methods. Differential Revision: http://llvm-reviews.chandlerc.com/D2638 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200777 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove another hasRawTextSupport.Rafael Espindola2014-01-31
| | | | | | | | | To remove this one simply move the end of file logic from the asm printer to the target mc streamer. This removes the last call to hasRawTextSupport from lib/Target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200590 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: support .object_archSaleem Abdulrasool2014-01-30
| | | | | | | | | | The .object_arch directive indicates an alternative architecture to be specified in the object file. The directive does *not* effect the enabled feature bits for the object file generation. This is particularly useful when the code performs runtime detection and would like to indicate a lower architecture as the requirements than the actual instructions used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200451 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: support .movspSaleem Abdulrasool2014-01-30
| | | | | | | | .movsp is an ARM unwinding directive that indicates to the unwinder that a register contains an offset from the current stack pointer. If the offset is unspecified, it defaults to zero. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200449 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: suuport .tlsdescseq directiveSaleem Abdulrasool2014-01-30
| | | | | | | | | | | This enhances the ARMAsmParser to handle .tlsdescseq directives. This is a slightly special relocation. We must be able to generate them, but not consume them in assembly. The relocation is meant to assist the linker in generating a TLS descriptor sequence. The ELF target streamer is enhanced to append additional fixups into the current segment and that is used to emit the new R_ARM_TLS_DESCSEQ relocations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200448 91177308-0d34-0410-b5e6-96231b3b80d8
* Change MCStreamer EmitInstruction interface to take subtarget infoDavid Woodhouse2014-01-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200345 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: Add support for .cfi_startproc simpleDavid Majnemer2014-01-27
| | | | | | | | | | | | | | This commit allows LLVM MC to process .cfi_startproc directives when they are followed by an additional `simple' identifier. This signals to elide the emission of target specific CFI instructions that would normally occur initially. This fixes PR16587. Differential Revision: http://llvm-reviews.chandlerc.com/D2624 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200227 91177308-0d34-0410-b5e6-96231b3b80d8
* Construct the MCStreamer before constructing the MCTargetStreamer.Rafael Espindola2014-01-26
| | | | | | | | | | This has a few advantages: * Only targets that use a MCTargetStreamer have to worry about it. * There is never a MCTargetStreamer without a MCStreamer, so we can use a reference. * A MCTargetStreamer can talk to the MCStreamer in its constructor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200129 91177308-0d34-0410-b5e6-96231b3b80d8
* Move emitInlineAsmEnd to the AsmPrinter interface.Rafael Espindola2014-01-24
| | | | | | | | There is no inline asm in a .s file. Therefore, there should be no logic to handle it in the streamer. Inline asm only exists in bitcode files, so the logic can live in the (long misnamed) AsmPrinter class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200011 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify the logic for deciding when to initialize the sections.Rafael Espindola2014-01-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199971 91177308-0d34-0410-b5e6-96231b3b80d8
* Most streamers' InitSections just create a text section. Make that the defaultRafael Espindola2014-01-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199969 91177308-0d34-0410-b5e6-96231b3b80d8
* InitToTextSection is redundant with InitSections. Remove it.Rafael Espindola2014-01-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199955 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix inline assembly that switches between ARM and Thumb modesGreg Fitzgerald2014-01-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch restores the ARM mode if the user's inline assembly does not. In the object streamer, it ensures that instructions following the inline assembly are encoded correctly and that correct mapping symbols are emitted. For the asm streamer, it emits a .arm or .thumb directive. This patch does not ensure that the inline assembly contains the ADR instruction to switch modes at runtime. The problem we need to solve is code like this: int foo(int a, int b) { int r = a + b; asm volatile( ".align 2 \n" ".arm \n" "add r0,r0,r0 \n" : : "r"(r)); return r+1; } If we compile this function in thumb mode then the inline assembly will switch to arm mode. We need to make sure that we switch back to thumb mode after emitting the inline assembly or we will incorrectly encode the instructions that follow (i.e. the assembly instructions for return r+1). Based on patch by David Peixotto Change-Id: Ib57f6d2d78a22afad5de8693fba6230ff56ba48b git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199818 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: add support for .unwind_raw directiveSaleem Abdulrasool2014-01-21
| | | | | | | | | | | | This implements the unwind_raw directive for the ARM IAS. The unwind_raw directive takes the form of a stack offset value followed by one or more bytes representing the opcodes to be emitted. The opcode emitted will interpreted as if it were assembled by the opcode assembler via the standard unwinding directives. Thanks to Logan Chien for an extra test! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199707 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: support .personalityindexSaleem Abdulrasool2014-01-21
| | | | | | | | | | | | | The .personalityindex directive is equivalent to the .personality directive with the ARM EABI personality with the specific index (0, 1, 2). Both of these directives indicate personality routines, so enhance the personality directive handling to take into account personalityindex. Bonus fix: flush the UnwindContext at the beginning of a new function. Thanks to Logan Chien for additional tests! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199706 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: whitespaceSaleem Abdulrasool2014-01-20
| | | | | | Remove hard tabs in favour of spaces. NFC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199624 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an emitRawComment function and use it to simplify some uses of EmitRawText.Rafael Espindola2014-01-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199397 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace .mips_hack_stocg with ".set micromips" and ".set nomicromips".Rafael Espindola2014-01-14
| | | | | | | This matches what gnu as does and implementing this is easier than arguing about it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199181 91177308-0d34-0410-b5e6-96231b3b80d8
* Make getTargetStreamer return a possibly null pointer.Rafael Espindola2014-01-14
| | | | | | | | | This will allow it to be called from target independent parts of the main streamer that don't know if there is a registered target streamer or not. This in turn will allow targets to perform extra actions at specified points in the interface: add extra flags for some labels, extra work during finalization, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199174 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: improve .eabi_attribute handlingSaleem Abdulrasool2014-01-07
| | | | | | | | Parse tag names as well as expressions. The former is part of the specification, the latter is for improved compatibility with the GNU assembler. Fix attribute value handling to be comformant to the specification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198662 91177308-0d34-0410-b5e6-96231b3b80d8
* [COFF] Add support for the .secidx directiveTimur Iskhodzhanov2013-12-20
| | | | | | Reviewed at http://llvm-reviews.chandlerc.com/D2445 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197826 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix yet another typoTimur Iskhodzhanov2013-12-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197821 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: support .inst directiveSaleem Abdulrasool2013-12-19
| | | | | | | | | This adds support for the .inst directive. This is an ARM specific directive to indicate an instruction encoded as a constant expression. The major difference between .word, .short, or .byte and .inst is that the latter will be disassembled as an instruction since it does not get flagged as data. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197657 91177308-0d34-0410-b5e6-96231b3b80d8
* [arm] Implement ARM .arch directive.Logan Chien2013-12-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197052 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a FIXME for making the symbol emission functions const.Eric Christopher2013-12-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196418 91177308-0d34-0410-b5e6-96231b3b80d8
* [weak vtables] Remove a bunch of weak vtablesJuergen Ributzka2013-11-19
| | | | | | | | | | | | This patch removes most of the trivial cases of weak vtables by pinning them to a single object file. The memory leaks in this version have been fixed. Thanks Alexey for pointing them out. Differential Revision: http://llvm-reviews.chandlerc.com/D2068 Reviewed by Andy git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195064 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r194865 and r194874.Alexey Samsonov2013-11-18
| | | | | | | | | | | | | This change is incorrect. If you delete virtual destructor of both a base class and a subclass, then the following code: Base *foo = new Child(); delete foo; will not cause the destructor for members of Child class. As a result, I observe plently of memory leaks. Notable examples I investigated are: ObjectBuffer and ObjectBufferStream, AttributeImpl and StringSAttributeImpl. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194997 91177308-0d34-0410-b5e6-96231b3b80d8
* [weak vtables] Remove a bunch of weak vtablesJuergen Ributzka2013-11-15
| | | | | | | | | | | This patch removes most of the trivial cases of weak vtables by pinning them to a single object file. Differential Revision: http://llvm-reviews.chandlerc.com/D2068 Reviewed by Andy git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194865 91177308-0d34-0410-b5e6-96231b3b80d8
* [arm] Implement eabi_attribute, cpu, and fpu directives.Logan Chien2013-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit allows the ARM integrated assembler to parse and assemble the code with .eabi_attribute, .cpu, and .fpu directives. To implement the feature, this commit moves the code from AttrEmitter to ARMTargetStreamers, and several new test cases related to cortex-m4, cortex-r5, and cortex-a15 are added. Besides, this commit also change the Subtarget->isFPOnlySP() to Subtarget->hasD16() to match the usage of .fpu directive. This commit changes the test cases: * Several .eabi_attribute directives in 2010-09-29-mc-asm-header-test.ll are removed because the .fpu directive already cover the functionality. * In the Cortex-A15 test case, the value for Tag_Advanced_SIMD_arch has be changed from 1 to 2, which is more precise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193524 91177308-0d34-0410-b5e6-96231b3b80d8
* MCStreamer: Reimplement the virtual EmitRawText as a protected member, ↵David Blaikie2013-10-24
| | | | | | | | | | EmitRawTextImpl, to avoid string literal ambiguities Also improve the implementation of EmitRawText(Twine) so it doesn't bother using the SmallString buffer if the Twine is a simple StringRef anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193378 91177308-0d34-0410-b5e6-96231b3b80d8
* Move .ident handling to MCStreamer.Rafael Espindola2013-10-16
| | | | | | | | No functionality change, but exposes the API so that codegen can use it too. Patch by Katya Romanova. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192757 91177308-0d34-0410-b5e6-96231b3b80d8
* Flip the ownership of MCStreamer and MCTargetStreamer.Benjamin Kramer2013-10-09
| | | | | | | MCStreamer now owns the target streamer. This prevents leaking the target streamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192303 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a MCTargetStreamer interface.Rafael Espindola2013-10-08
| | | | | | | | | | | | | This patch fixes an old FIXME by creating a MCTargetStreamer interface and moving the target specific functions for ARM, Mips and PPC to it. The ARM streamer is still declared in a common place because it is used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are completely hidden in the corresponding Target directories. I will send an email to llvmdev with instructions on how to use this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192181 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove some really nasty uses of hasRawTextSupport.Rafael Espindola2013-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When MC was first added, targets could use hasRawTextSupport to keep features working before they were added to the MC interface. The design goal of MC is to provide an uniform api for printing assembly and object files. Short of relaxations and other corner cases, a object file is just another representation of the assembly. It was never the intention that targets would keep doing things like if (hasRawTextSupport()) Set flags in one way. else Set flags in another way. When they do that they create two code paths and the object file is no longer just another representation of the assembly. This also then requires testing with llc -filetype=obj, which is extremelly brittle. This patch removes some of these hacks by replacing them with smaller ones. The ARM flag setting is trivial, so I just moved it to the constructor. For Mips, the patch adds two temporary hack directives that allow the assembly to represent the same things as the object file was already able to. The hope is that the mips developers will replace the hack directives with the same ones that gas uses and drop the -print-hack-directives flag. I will also try to implement a target streamer interface, so that we can move this out of the common code. In summary, for any new work, two rules of the thumb are * Don't use "llc -filetype=obj" in tests. * Don't add calls to hasRawTextSupport. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192035 91177308-0d34-0410-b5e6-96231b3b80d8
* Implements parsing and emitting of .cfi_window_save in MC.Venkatraman Govindaraju2013-09-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191431 91177308-0d34-0410-b5e6-96231b3b80d8
* Added support for generate DWARF .debug_aranges sections automatically.Richard Mitton2013-09-19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191052 91177308-0d34-0410-b5e6-96231b3b80d8
* Call generateCompactUnwindEncodings() right before we need to output the ↵Bill Wendling2013-09-09
| | | | | | | | | | | | | | frame information. There are more than one paths to where the frame information is emitted. Place the call to generateCompactUnwindEncodings() into the method which outputs the frame information, thus ensuring that the encoding is there for every path. This involved threading the MCAsmBackend object through to this method. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190335 91177308-0d34-0410-b5e6-96231b3b80d8
* Generate compact unwind encoding from CFI directives.Bill Wendling2013-09-09
| | | | | | | | | | | | | | | | We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190290 91177308-0d34-0410-b5e6-96231b3b80d8
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