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path: root/lib/Target/Mips/MipsAsmPrinter.cpp
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* [mips] Optimize long branch for MIPS64 by removing %higher and %highest.Sasa Stankovic2014-05-27
| | | | | | | | | | | %higher and %highest can have non-zero values only for offsets greater than 2GB, which is highly unlikely, if not impossible when compiling a single function. This makes long branch for MIPS64 3 instructions smaller. Differential Revision: http://llvm-reviews.chandlerc.com/D3281.diff git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209678 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix MipsLongBranch pass to work when the offset from the branch to theSasa Stankovic2014-04-30
| | | | | | | | | | | | | | | target cannot be determined accurately. This is the case for NaCl where the sandboxing instructions are added in MC layer, after the MipsLongBranch pass. It is also the case when the code has inline assembly. Instead of calculating offset in the MipsLongBranch pass, use %hi(sym1 - sym2) and %lo(sym1 - sym2) expressions that are resolved during the fixup. This patch also deletes microMIPS test file test/CodeGen/Mips/micromips-long-branch.ll and implements microMIPS CHECKs in a much simpler way in a file test/CodeGen/Mips/longbranch.ll, together with MIPS32 and MIPS64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207656 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++] Use 'nullptr'. Target edition.Craig Topper2014-04-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207197 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Fix potential ODR violations by sinking the DEBUG_TYPEChandler Carruth2014-04-22
| | | | | | | definition below all of the header #include lines, lib/Target/... edition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206842 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Add initial support for NaN2008 in the back-end.Matheus Almeida2014-04-16
| | | | | | | | | | | | | This is so that EF_MIPS_NAN2008 is set if we are using IEEE 754-2008 NaN encoding (-mnan=2008). This patch also adds support for parsing '.nan legacy' and '.nan 2008' assembly directives. The handling of these directives should match GAS' behaviour i.e., the last directive in use sets the ELF header bit (EF_MIPS_NAN2008). Differential Revision: http://reviews.llvm.org/D3346 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206396 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Fix emission of '.option pic0' for MIPS-IV.Daniel Sanders2014-04-16
| | | | | | | | | | | | Summary: This was a case of incorrect usage of hasMips64() vs isABI_N64() Reviewers: matheusalmeida, dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206388 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Emit '.set nomicromips' before a function's entry labelMatheus Almeida2014-04-16
| | | | | | | | | | | | | if not in micromips mode. The test (elf_st_other.ll) was renamed as the name and description didn't make sense as the test wasn't checking any symbol table entry. Differential Revision: http://reviews.llvm.org/D3346 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206377 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Implement NaCl sandboxing of indirect jumps:Sasa Stankovic2014-02-28
| | | | | | | | | | * Align targets of indirect jumps to instruction bundle boundaries (in MI layer). * Add masking instructions before indirect jumps (in MC layer). Differential Revision: http://llvm-reviews.chandlerc.com/D2847 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202479 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch has two main functions:Reed Kotler2014-02-14
| | | | | | | | | | | | | | | | | | | 1) Fix a specific bug when certain conversion functions are called in a program compiled as mips16 with hard float and the program is linked as c++. There are two libraries that are reversed in the link order with gcc/g++ and clang/clang++ for mips16 in this case and the proper stubs will then not be called. These stubs are normally handled in the Mips16HardFloat pass but in this case we don't know at that time that we need to generate the stubs. This must all be handled later in code generation and we have moved this functionality to MipsAsmPrinter. When linked as C (gcc or clang) the proper stubs are linked in from libc. 2) Set up the infrastructure to handle 90% of what is in the Mips16HardFloat pass in this new area of MipsAsmPrinter. This is a more logical place to handle this and we have known for some time that we needed to move the code later and not implement it using inline asm as we do now but it was not clear exactly where to do this and what mechanism should be used. Now it's clear to us how to do this and this patch contains the infrastructure to move most of this to MipsAsmPrinter but the actual moving will be done in a follow on patch. The same infrastructure is used to fix this current bug as described in #1. This change was requested by the list during the original putback of the Mips16HardFloat pass but was not practical for us do at that time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201426 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
* 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
* Print .mask and .fmask with the target streamer.Rafael Espindola2014-01-27
| | | | | | | Testing this also found the missing '\n' after .frame that this patch also fixes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200192 91177308-0d34-0410-b5e6-96231b3b80d8
* Print .frame via the target streamer.Rafael Espindola2014-01-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200186 91177308-0d34-0410-b5e6-96231b3b80d8
* Use SwitchSection in MipsAsmPrinter::EmitStartOfAsmFile.Rafael Espindola2014-01-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200178 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement the missing bits corresponding to .mips_hack_elf_flags.Rafael Espindola2014-01-26
| | | | | | | | | | | | These were: * noreorder handling on the target object streamer and asm parser. * setting the initial flag bits based on the enabled features. * setting the elf header flag for micromips It is *really* depressing I am the one doing this instead of someone at mips actually taking the time to understand the infrastructure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200138 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert some easy uses of EmitRawText to TargetStreamer methods.Rafael Espindola2014-01-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200122 91177308-0d34-0410-b5e6-96231b3b80d8
* This reverts commit r200064 and r200051.Rafael Espindola2014-01-25
| | | | | | | | | | | | | | | | | | | r200064 depends on r200051. r200051 is broken: I tries to replace .mips_hack_elf_flags, which is a good thing, but what it replaces it with is even worse. The new emitMipsELFFlags it adds corresponds to no assembly directive, is not marked as a hack and is not even printed to the .s file. The patch also introduces more uses of hasRawTextSupport. The correct way to remove .mips_hack_elf_flags is to have the mips target streamer handle the default flags (and command line options). That way the same code path is used for asm and obj. The streamer interface should *really* correspond to what is printed in the .s file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200078 91177308-0d34-0410-b5e6-96231b3b80d8
* [Mips] TargetStreamer ELF flag Support for default and commandline options.Jack Carter2014-01-25
| | | | | | | | | | | | | | | | This patch uses a common MipsTargetSteamer interface for both MipsAsmPrinter and MipsAsmParser for recording default and commandline driven directives that affect ELF header flags. It has been noted that the .ll tests affected by this patch belong in test/Codegen/Mips. I will move them in a separate patch. Also, a number of directives do not get expressed by AsmPrinter in the resultant .s assembly such as setting the correct ASI. I have noted this in the tests and they will be addressed in later patches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200051 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a low hanging use of hasRawTextSupport.Rafael Espindola2014-01-14
| | | | | | | This also fixes the placement of the function label comment. It was being placed next to the mips16 directive instead of next to the label. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199245 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
* Move the llvm mangler to lib/IR.Rafael Espindola2014-01-07
| | | | | | This makes it available to tools that don't link with target (like llvm-ar). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198708 91177308-0d34-0410-b5e6-96231b3b80d8
* [Mips] TargetStreamer Support for .abicalls and .set pic0.Jack Carter2014-01-06
| | | | | | | | | | | This patch adds .abicalls and .set pic0 support which affects the ELF ABI and its flags. In addition the patch uses a common interface for both the MipsTargetSteamer and MipsObjectStreamer that both the integrated and standalone assemblers will use for the output for these directives. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198646 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the llvm mangler depend only on DataLayout.Rafael Espindola2014-01-03
| | | | | | | | | | | | | | Before this patch any program that wanted to know the final symbol name of a GlobalValue had to link with Target. This patch implements a compromise solution where the mangler uses DataLayout. This way, any tool that already links with Target (llc, clang) gets the exact behavior as before and new IR files can be mangled without linking with Target. With this patch the mangler is constructed with just a DataLayout and DataLayout is extended to include the information the Mangler needs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198438 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead code.Rafael Espindola2013-12-02
| | | | | | | | | MO_JumpTableIndex and MO_ExternalSymbol don't show up on inline asm. Keeping parts of the old asm printer just to print inline asm to a string that we then parse back looks like a hack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196111 91177308-0d34-0410-b5e6-96231b3b80d8
* reverts 195057 per requestJack Carter2013-11-19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195152 91177308-0d34-0410-b5e6-96231b3b80d8
* [Mips] Support for MicroMips STO refactoring.Jack Carter2013-11-19
| | | | | | | | | | | | | | | | | No true functional changes. Change the "hack" name of emitMipsHackSTOCG to emitSymSTO. Remove demonstration code in AsmParser for emitMipsHackSTOCG and emitMipsHackELFFlags. The STO field is in an ELF symbol and is not an explicit directive. That said, we are missing the compliment call in AsmParser and that will need to be addressed soon. XFAIL dummy tests for emitMipsHackELFFlags and emitMipsHackELFFlags. These will built out with following patches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195067 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips][msa] Enable inlinse assembly for MSA.Daniel Sanders2013-11-12
| | | | | | | | | | | | | | | | Like GCC, this re-uses the 'f' constraint and a new 'w' print-modifier: asm ("ldi.w %w0, 1", "=f"(result)); Unlike GCC, the 'w' print-modifer is not _required_ to produce the intended output. This is a consequence of differences in the internal handling of the registers in each compiler. To be source-compatible between the compilers, users must use the 'w' print-modifier. MSA registers (including control registers) are supported in clobber lists. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194476 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips][msa] Added support for matching bclr, and bclri from normal IR (i.e. ↵Daniel Sanders2013-11-12
| | | | | | not intrinsics) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194471 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a helper getSymbol to AsmPrinter.Rafael Espindola2013-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193627 91177308-0d34-0410-b5e6-96231b3b80d8
* The asm printer has a mangler. Use it.Rafael Espindola2013-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193618 91177308-0d34-0410-b5e6-96231b3b80d8
* Make first substantial checkin of my port of ARM constant islands code to Mips.Reed Kotler2013-10-27
| | | | | | | | | | | | | | Before I just ported the shell of the pass. I've tried to keep everything nearly identical to the ARM version. I think it will be very easy to eventually merge these two and create a new more general pass that other targets can use. I have some improvements I would like to make to allow pools to be shared across functions and some other things. When I'm all done we can think about making a more general pass. More to be ported but the basic mechanism works now almost as good as gcc mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193509 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
* reverting per requestJack Carter2013-10-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191992 91177308-0d34-0410-b5e6-96231b3b80d8
* [MC][AsmParser] Hook for post assembly file processingJack Carter2013-10-04
| | | | | | | | | | | | | | | | | | | | | | This patch handles LLVM standalone assembler (llvm-mc) ELF flag setting based on input file directive processing. Mips assembly requires processing inline directives that directly and indirectly affect the output ELF header flags. This patch handles one ".abicalls". To process these directives we are following the model the code generator uses by storing state in a container as we go through processing and when we detect the end of input file processing, AsmParser is notified and we update the ELF header flags through a MipsELFStreamer method with a call from MCTargetAsmParser::emitEndOfAsmFile(MCStreamer &OutStreamer). This patch will allow other targets the same functionality. Jack git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191982 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Rename register classes CPURegs and CPU64Regs.Akira Hatanaka2013-08-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187832 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Do not emit ".option pic0" if target is mips64.Akira Hatanaka2013-06-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185012 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips ELF: Mark object file as ABI compliant Jack Carter2013-06-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When producing objects that are abi compliant we are marking neither the object file nor the assembly file correctly and thus generate warnings. We need to set the EF_CPIC flag in the ELF header when generating direct object. Note that the warning is only generated when compiling without PIC. When compiling with clang the warning will be suppressed by supplying: -Wa,-mno-shared -Wa,-call_nonpic Also the following directive should also be added: .option pic0 when compiling without PIC, This eliminates the need for supplying: -mno-shared -call_nonpic on the assembler command line. Patch by Douglas Gilmore git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184220 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: remove target-specific Frame Index handling for DBG_VALUE ↵David Blaikie2013-06-16
| | | | | | | | | | MachineInstrs Frame index handling is now target-agnostic, so delete the target hooks for creation & asm printing of target-specific addressing in DBG_VALUEs and any related functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184067 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove some uneeded pseudos in the presence of the naked function attribute.Reed Kotler2013-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181072 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips specific inline asm operand modifier 'D' Jack Carter2013-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modifier 'D' is to use the second word of a double integer. We had previously implemented the pure register varient of the modifier and this patch implements the memory reference. #include "stdio.h" int b[8] = {0,1,2,3,4,5,6,7}; void main() { int i; // The first word. Notice, no 'D' {asm ( "lw %0,%1;" : "=r" (i) : "m" (*(b+4)) );} printf("%d\n",i); // The second word {asm ( "lw %0,%D1;" : "=r" (i) : "m" (*(b+4)) );} printf("%d\n",i); } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179135 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch enables llvm to switch between compiling for mips32/mips64 Reed Kotler2013-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | and mips16 on a per function basis. Because this patch is somewhat involved I have provide an overview of the key pieces of it. The patch is written so as to not change the behavior of the non mixed mode. We have tested this a lot but it is something new to switch subtargets so we don't want any chance of regression in the mainline compiler until we have more confidence in this. Mips32/64 are very different from Mip16 as is the case of ARM vs Thumb1. For that reason there are derived versions of the register info, frame info, instruction info and instruction selection classes. Now we register three separate passes for instruction selection. One which is used to switch subtargets (MipsModuleISelDAGToDAG.cpp) and then one for each of the current subtargets (Mips16ISelDAGToDAG.cpp and MipsSEISelDAGToDAG.cpp). When the ModuleISel pass runs, it determines if there is a need to switch subtargets and if so, the owning pointers in MipsTargetMachine are appropriately changed. When 16Isel or SEIsel is run, they will return immediately without doing any work if the current subtarget mode does not apply to them. In addition, MipsAsmPrinter needs to be reset on a function basis. The pass BasicTargetTransformInfo is substituted with a null pass since the pass is immutable and really needs to be a function pass for it to be used with changing subtargets. This will be fixed in a follow on patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179118 91177308-0d34-0410-b5e6-96231b3b80d8
* ELF symbol table field st_other support, Jack Carter2013-02-19
| | | | | | | | | | | | | | | excluding visibility bits. Mips (MicroMips) specific STO handling . The st_other field settig for STO_MIPS_MICROMIPS Contributer: Zoran Jovanovic git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175564 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove a final dependency on the form field in tablegen; which is a remnantReed Kotler2013-02-15
| | | | | | | | | of the old jit and which we don't intend to support in mips16 or micromips. This dependency is for the testing of whether an instruction is a pseudo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175297 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix minor mips16 issues in directives for function prologue. Probably this doesReed Kotler2013-02-15
| | | | | | | | | not matter but makes it more gcc compatible which avoids possible subtle problems. Also, turned back on a disabled check in helloworld.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175237 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Make NOP a pseudo instruction and expand it to "sll $zero, $zero, 0".Akira Hatanaka2013-02-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174546 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch changes a static_cast to dyn_castJack Carter2013-02-05
| | | | | | | | | | for MipsELFStreamer objects. Contributer: Jack Carter git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174354 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch implements runtime Mips specificJack Carter2013-01-30
| | | | | | | | | | setting of ELF header e_flags. Contributer: Jack Carter git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173884 91177308-0d34-0410-b5e6-96231b3b80d8
* This is a resubmittal. For some reason it broke the bots yesterdayJack Carter2013-01-18
| | | | | | | | | | | | | | | | | | | | | | | | but I cannot reproduce the problem and have scrubed my sources and even tested with llvm-lit -v --vg. Support for Mips register information sections. Mips ELF object files have a section that is dedicated to register use info. Some of this information such as the assumed Global Pointer value is used by the linker in relocation resolution. The register info file is .reginfo in o32 and .MIPS.options in 64 and n32 abi files. This patch contains the changes needed to create the sections, but leaves the actual register accounting for a future patch. Contributer: Jack Carter git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172847 91177308-0d34-0410-b5e6-96231b3b80d8