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* [mips] Add assembler support for '.set mipsX'.Daniel Sanders2014-08-041-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This patch also fixes an issue with the way the Mips assembler enables/disables architecture features. Before this patch, the assembler never disabled feature bits. For example, .set mips64 .set mips32r2 would result in the 'OR' of mips64 with mips32r2 feature bits which isn't right. Unfortunately this isn't trivial to fix because there's not an easy way to clear feature bits as the algorithm in MCSubtargetInfo (ToggleFeature) only clears the bits that imply the feature being cleared and not the implied bits by the feature (there's a better explanation to the code I added). Patch by Matheus Almeida and updated by Toma Tabacu Reviewers: vmedic, matheusalmeida, dsanders Reviewed By: dsanders Subscribers: tomatabacu, llvm-commits Differential Revision: http://reviews.llvm.org/D4123 llvm-svn: 214709
* [mips] Add support for -modd-spreg/-mno-odd-spregDaniel Sanders2014-07-101-8/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: When -mno-odd-spreg is in effect, 32-bit floating point values are not permitted in odd FPU registers. The option also prohibits 32-bit and 64-bit floating point comparison results from being written to odd registers. This option has three purposes: * It allows support for certain MIPS implementations such as loongson-3a that do not allow the use of odd registers for single precision arithmetic. * When using -mfpxx, -mno-odd-spreg is the default and this allows us to statically check that code is compliant with the O32 FPXX ABI since mtc1/mfc1 instructions to/from odd registers are guaranteed not to appear for any reason. Once this has been established, the user can then re-enable -modd-spreg to regain the use of all 32 single-precision registers. * When using -mfp64 and -mno-odd-spreg together, an O32 extension named O32 FP64A is used as the ABI. This is intended to provide almost all functionality of an FR=1 processor but can also be executed on a FR=0 core with the assistance of a hardware compatibility mode which emulates FR=0 behaviour on an FR=1 processor. * Added '.module oddspreg' and '.module nooddspreg' each of which update the .MIPS.abiflags section appropriately * Moved setFpABI() call inside emitDirectiveModuleFP() so that the caller doesn't have to remember to do it. * MipsABIFlags now calculates the flags1 and flags2 member on demand rather than trying to maintain them in the same format they will be emitted in. There is one portion of the -mfp64 and -mno-odd-spreg combination that is not implemented yet. Moves to/from odd-numbered double-precision registers must not use mtc1. I will fix this in a follow-up. Differential Revision: http://reviews.llvm.org/D4383 llvm-svn: 212717
* MipsTargetStreamer.h: Avoid "using" to appease msc17.NAKAMURA Takumi2014-07-081-1/+1
| | | | llvm-svn: 212577
* [mips] Fixed struct/class mismatch introduced in r212522.Daniel Sanders2014-07-081-1/+1
| | | | | | Clang emits a warning about this. llvm-svn: 212528
* [mips] Improve encapsulation of the .MIPS.abiflags implementation and limit ↵Daniel Sanders2014-07-081-169/+13
| | | | | | | | | | | | | | | scope of related enums Summary: Follow on to r212519 to improve the encapsulation and limit the scope of the enums. Also merged two very similar parser functions, fixed a bug where ASE's were not being reported, and marked CPR1's as being 128-bit when MSA is enabled. Differential Revision: http://reviews.llvm.org/D4384 llvm-svn: 212522
* Mips.abiflags is a new implicitly generated section that will be present on ↵Vladimir Medic2014-07-081-0/+193
| | | | | | all new modules. The section contains a versioned data structure which represents essentially information to allow a program loader to determine the requirements of the application. This patch implements mips.abiflags section and provides test cases for it. llvm-svn: 212519
* [Mips] Add a target streamer when creating a null streamer.Rafael Espindola2014-06-231-30/+28
| | | | | | Should fix DebugInfo/global.ll on the mips bot. llvm-svn: 211527
* [mips] Move expansion of .cpsetup to target streamer.Matheus Almeida2014-05-011-0/+6
| | | | | | | | | | | | | | | Summary: There are two functional changes: 1) The directive is not expanded for the ASM->ASM code path. 2) If PIC is not set, there's no expansion for the ASM->OBJ code path (same behaviour as GAS). Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3482 llvm-svn: 207741
* [mips] Add support for .cpload.Matheus Almeida2014-04-301-0/+14
| | | | | | | | | | | | | | | | | | | | Summary: This directive is used for setting up $gp in the beginning of a function. It expands to three instructions if PIC is enabled: lui $gp, %hi(_gp_disp) addui $gp, $gp, %lo(_gp_disp) addu $gp, $gp, $reg _gp_disp is a special symbol that the linker sets to the distance between the lui instruction and the context pointer (_gp). Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3480 llvm-svn: 207637
* [C++11] Add 'override' keywords and remove 'virtual'. Additionally add ↵Craig Topper2014-04-291-58/+58
| | | | | | 'final' and leave 'virtual' on some methods that are marked virtual without overriding anything and have no obvious overrides themselves. Mips edition llvm-svn: 207506
* [mips] Add initial support for NaN2008 in the back-end.Matheus Almeida2014-04-161-0/+6
| | | | | | | | | | | | 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 llvm-svn: 206396
* [mips] Add support to '.set mips64'.Matheus Almeida2014-03-261-0/+3
| | | | | | | | | | The '.set mips64' directive enables the feature Mips:FeatureMips64 from assembly. Note that it doesn't modify the ELF header as opposed to the use of -mips64 from the command-line. The reason for this is that we want to be as compatible as possible with existing assemblers like GAS. llvm-svn: 204817
* [mips] Add support to '.set mips64r2'.Matheus Almeida2014-03-261-0/+3
| | | | | | | | | | The '.set mips64r2' directive enables the feature Mips:FeatureMips64r2 from assembly. Note that it doesn't modify the ELF header as opposed to the use of -mips64r2 from the command-line. The reason for this is that we want to be as compatible as possible with existing assemblers like GAS. llvm-svn: 204815
* [mips] Add support for '.option pic2'.Matheus Almeida2014-03-261-0/+4
| | | | | | | | | The directive '.option pic2' enables PIC from assembly source. At the moment none of the macros/directives check the PIC bit but that's going to be fixed relatively soon. For example, the expansion of macros like 'la' depend on the relocation model. llvm-svn: 204803
* Mark alias symbols as microMIPS if necessary. Differential Revision: ↵Zoran Jovanovic2014-03-201-0/+1
| | | | | | http://llvm-reviews.chandlerc.com/D3080 llvm-svn: 204323
* This patch implements .set dsp directive and sets appropriate feature ↵Vladimir Medic2014-03-051-0/+3
| | | | | | bits.This directive is a counterpart of -mattr=dsp command line option with the exception that it does not influence elf header flags. The usage example is gives in test file. llvm-svn: 202966
* This patch implements .set mips32r2 directive and sets appropriate feature ↵Vladimir Medic2014-03-041-0/+6
| | | | | | bits. It also introduces helper functions that are used to set and clear feature bits as necessary. This directive is a counterpart of -mips32r2 command line options with the exception that it does not influence elf header flags. The usage example is gives in test file. llvm-svn: 202807
* Switch all uses of LLVM_OVERRIDE to just use 'override' directly.Craig Topper2014-03-021-2/+2
| | | | llvm-svn: 202621
* Remove another hasRawTextSupport.Rafael Espindola2014-01-311-0/+2
| | | | | | | | | 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. llvm-svn: 200590
* Print .mask and .fmask with the target streamer.Rafael Espindola2014-01-271-0/+6
| | | | | | | Testing this also found the missing '\n' after .frame that this patch also fixes. llvm-svn: 200192
* Print .frame via the target streamer.Rafael Espindola2014-01-271-0/+6
| | | | llvm-svn: 200186
* Implement the missing bits corresponding to .mips_hack_elf_flags.Rafael Espindola2014-01-261-5/+1
| | | | | | | | | | | | 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. llvm-svn: 200138
* Construct the MCStreamer before constructing the MCTargetStreamer.Rafael Espindola2014-01-261-2/+3
| | | | | | | | | | 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. llvm-svn: 200129
* Convert some easy uses of EmitRawText to TargetStreamer methods.Rafael Espindola2014-01-261-0/+27
| | | | llvm-svn: 200122
* This reverts commit r200064 and r200051.Rafael Espindola2014-01-251-3/+3
| | | | | | | | | | | | | | | | | | | 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. llvm-svn: 200078
* [Mips] TargetStreamer ELF flag Support for default and commandline options.Jack Carter2014-01-251-3/+3
| | | | | | | | | | | | | | | 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. llvm-svn: 200051
* Unify duplicated functions.Rafael Espindola2014-01-241-3/+0
| | | | llvm-svn: 200014
* [Mips] TargetStreamer Support for .set mips16.Jack Carter2014-01-221-0/+4
| | | | | | | | | | This patch updates .set mips16 support which affects the ELF ABI and its flags. In addition the patch uses a common interface for both the MipsTargetSteamer and MipsObjectStreamer that the assembler uses for both ELF and ASCII output for these directives. llvm-svn: 199851
* Fix a low hanging use of hasRawTextSupport.Rafael Espindola2014-01-141-0/+9
| | | | | | | 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. llvm-svn: 199245
* Replace .mips_hack_stocg with ".set micromips" and ".set nomicromips".Rafael Espindola2014-01-141-3/+11
| | | | | | | This matches what gnu as does and implementing this is easier than arguing about it. llvm-svn: 199181
* [Mips] TargetStreamer Support for .abicalls and .set pic0.Jack Carter2014-01-061-1/+8
| | | | | | | | | | 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. llvm-svn: 198646
* reverts 195057 per requestJack Carter2013-11-191-3/+6
| | | | llvm-svn: 195152
* Remove unused special member functions and reformat.Eric Christopher2013-11-191-2/+1
| | | | llvm-svn: 195077
* Fix previous commit and fully remove variable.Eric Christopher2013-11-191-2/+1
| | | | llvm-svn: 195076
* Remove unused variable.Eric Christopher2013-11-191-1/+0
| | | | llvm-svn: 195075
* [Mips] Support for MicroMips STO refactoring.Jack Carter2013-11-191-3/+3
| | | | | | | | | | | | | | | | 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. llvm-svn: 195067
* [weak vtables] Remove a bunch of weak vtablesJuergen Ributzka2013-11-191-1/+0
| | | | | | | | | | | | 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 llvm-svn: 195064
* [Mips] MipsTargetStreamer refactoring.Jack Carter2013-11-181-0/+22
| | | | | | No functionality changes. llvm-svn: 195057
* Revert r194865 and r194874.Alexey Samsonov2013-11-181-1/+0
| | | | | | | | | | | | 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. llvm-svn: 194997
* [weak vtables] Remove a bunch of weak vtablesJuergen Ributzka2013-11-151-0/+1
| | | | | | | | | | | 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 llvm-svn: 194865
* Add a MCTargetStreamer interface.Rafael Espindola2013-10-081-0/+23
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. llvm-svn: 192181
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