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path: root/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
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* The current X86 NOP padding uses one long NOP followed by the remainder inDavid Sehr2013-03-051-12/+12
| | | | | | | | | | | | one-byte NOPs. If the processor actually executes those NOPs, as it sometimes does with aligned bundling, this can have a performance impact. From my micro-benchmarks run on my one machine, a 15-byte NOP followed by twelve one-byte NOPs is about 20% worse than a 15 followed by a 12. This patch changes NOP emission to emit as many 15-byte (the maximum) as possible followed by at most one shorter NOP. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176464 91177308-0d34-0410-b5e6-96231b3b80d8
* Renamed MCInstFragment to MCRelaxableFragment and added some comments.Eli Bendersky2013-01-081-2/+2
| | | | | | | | No change in functionality. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171822 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a bogus commentEli Bendersky2012-12-131-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170052 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable ELF machine type to be specified explicitly in X86 backendMichael Liao2012-10-301-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167027 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Disable long nops for all cpus prior to pentiumpro/i686.Benjamin Kramer2012-10-131-1/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165878 91177308-0d34-0410-b5e6-96231b3b80d8
* Support for generating ELF objects on Windows.Andrew Kaylor2012-10-021-2/+2
| | | | | | This adds 'elf' as a recognized target triple environment value and overrides the default generated object format on Windows platforms if that value is present. This patch also enables MCJIT tests on Windows using the new environment value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165030 91177308-0d34-0410-b5e6-96231b3b80d8
* When creating MCAsmBackend pass the CPU string as well. In X86AsmBackendRoman Divacky2012-09-181-24/+32
| | | | | | | | | | store this and use it to not emit long nops when the CPU is geode which doesnt support them. Fixes PR11212. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164132 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix Doxygen issues:Dmitri Gribenko2012-09-141-2/+2
| | | | | | | | | | | * wrap code blocks in \code ... \endcode; * refer to parameter names in paragraphs correctly (\arg is not what most people want -- it starts a new paragraph); * use \param instead of \arg to document parameters in order to be consistent with the rest of the codebase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163902 91177308-0d34-0410-b5e6-96231b3b80d8
* Prune some includesCraig Topper2012-03-271-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153502 91177308-0d34-0410-b5e6-96231b3b80d8
* Reorder includes in Target backends to following coding standards. Remove ↵Craig Topper2012-03-171-1/+1
| | | | | | some superfluous forward declarations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152997 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert assert(0) to llvm_unreachable in X86 Target directory.Craig Topper2012-02-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149809 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. MCAsmBackend naming conventions.Jim Grosbach2012-01-181-8/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148400 91177308-0d34-0410-b5e6-96231b3b80d8
* Section relative fixups are a coff concept, not a x86 one. Replace theRafael Espindola2011-12-241-3/+5
| | | | | | x86 specific reloc_coff_secrel32 with a generic FK_SecRel_4. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147252 91177308-0d34-0410-b5e6-96231b3b80d8
* Move x86 specific bits of the COFF writer to lib/Target/X86.Rafael Espindola2011-12-241-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147231 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the X86 specific bits of the ELF writer to the Target/X86 directory.Rafael Espindola2011-12-211-12/+2
| | | | | | Other targets will follow shortly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147060 91177308-0d34-0410-b5e6-96231b3b80d8
* Reduce the exposure of Triple::OSType in the ELF object writer. This willRafael Espindola2011-12-211-14/+16
| | | | | | | avoid including ADT/Triple.h in many places when the target specific bits are moved. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147059 91177308-0d34-0410-b5e6-96231b3b80d8
* Add back the MC bits of 126425. Original patch by Nathan Jeffords. I added theRafael Espindola2011-12-171-1/+3
| | | | | | asm parsing and testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146801 91177308-0d34-0410-b5e6-96231b3b80d8
* Move target-specific logic out of generic MCAssembler.Jim Grosbach2011-12-061-0/+13
| | | | | | | | Whether a fixup needs relaxation for the associated instruction is a target-specific function, as the FIXME indicated. Create a hook for that and use it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145881 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify assertion, and avoid undefined shift. Based on patch by Ahmed Charles.Eli Friedman2011-10-131-8/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141912 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetRegistry and TargetSelect from Target to Support where they belong.Evan Cheng2011-08-241-1/+1
| | | | | | | These are strictly utilities for registering targets and components. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138450 91177308-0d34-0410-b5e6-96231b3b80d8
* Silence unused variable warnings in release builds.Chandler Carruth2011-08-051-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136956 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix http://llvm.org/bugs/show_bug.cgi?id=10583\n - test for 1 and 2 byte ↵Jason W Kim2011-08-051-15/+11
| | | | | | fixups to be added git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136954 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix http://llvm.org/bugs/show_bug.cgi?id=10568Jason W Kim2011-08-041-0/+17
| | | | | | Move the reloc size assert into AsmBackend - where it is more apropos. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136855 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to ↵Evan Cheng2011-07-251-8/+6
| | | | | | createMCAsmBackend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136010 91177308-0d34-0410-b5e6-96231b3b80d8
* More refactoring.Evan Cheng2011-07-251-0/+452
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135939 91177308-0d34-0410-b5e6-96231b3b80d8
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