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* Change the default input for llvm-nm to be a.out instead of standard inputKevin Enderby2014-06-23
| | | | | | | | | | to match llvm-size and other UNIX systems for their nm(1). Tweak test cases that used llvm-nm with standard input to add a "-" to indicate that and add a test case to check the default of a.out for llvm-nm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211529 91177308-0d34-0410-b5e6-96231b3b80d8
* Set missing options in LTOCodeGenerator::setTargetOptions.Rafael Espindola2014-06-19
| | | | | | Patch by Tom Roeder, I just added the test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211317 91177308-0d34-0410-b5e6-96231b3b80d8
* Reduce verbiage of lit.local.cfg filesAlp Toker2014-06-09
| | | | | | We can just split targets_to_build in one place and make it immutable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210496 91177308-0d34-0410-b5e6-96231b3b80d8
* IR: Don't allow non-default visibility on local linkageDuncan P. N. Exon Smith2014-05-07
| | | | | | | | | | | | | | | | | Visibilities of `hidden` and `protected` are meaningless for symbols with local linkage. - Change the assembler to reject non-default visibility on symbols with local linkage. - Change the bitcode reader to auto-upgrade `hidden` and `protected` to `default` when the linkage is local. - Update LangRef. <rdar://problem/16141113> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208263 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an -mattr option to the gold plugin to support subtarget features in LTOTom Roeder2014-04-25
| | | | | | | | | | | | This adds support for an -mattr option to the gold plugin and to llvm-lto. This allows the caller to specify details of the subtarget architecture, like +aes, or +ssse3 on x86. Note that this requires a change to the include/llvm-c/lto.h interface: it adds a function lto_codegen_set_attr and it increments the version of the interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207279 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch fixes LTO's RecordStreamer so that it records symbols in the MCExprTom Roeder2014-03-31
| | | | | | | | | | | | | part of an asm .symver directive as being used. This prevents referenced functions from being internalized and deleted. Without the patch to LTOModule.cpp, the test case will produce the error: LLVM ERROR: A @@ version cannot be undefined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205221 91177308-0d34-0410-b5e6-96231b3b80d8
* Module: Don't rename in getOrInsertFunction()Duncan P. N. Exon Smith2014-03-10
| | | | | | | | | | | | | | | | | | | | | | | During LTO, user-supplied definitions of C library functions often exist. -instcombine uses Module::getOrInsertFunction() to get a handle on library functions (e.g., @puts, when optimizing @printf). Previously, Module::getOrInsertFunction() would rename any matching functions with local linkage, and create a new declaration. In LTO, this is the opposite of desired behaviour, as it skips by the user-supplied version of the library function and creates a new undefined reference which the linker often cannot resolve. After some discussing with Rafael on the list, it looks like it's undesired behaviour. If a consumer actually *needs* this behaviour, we should add new API with a more explicit name. I added two testcases: one specifically for the -instcombine behaviour and one for the LTO flow. <rdar://problem/16165191> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203513 91177308-0d34-0410-b5e6-96231b3b80d8
* Add back r201608, r201622, r201624 and r201625Rafael Espindola2014-02-19
| | | | | | | | | | | | | | r201608 made llvm corretly handle private globals with MachO. r201622 fixed a bug in it and r201624 and r201625 were changes for using private linkage, assuming that llvm would do the right thing. They all got reverted because r201608 introduced a crash in LTO. This patch includes a fix for that. The issue was that TargetLoweringObjectFile now has to be initialized before we can mangle names of private globals. This is trivially true during the normal codegen pipeline (the asm printer does it), but LTO has to do it manually. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201700 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't internalize linkonce_odr non constant variables.Rafael Espindola2014-02-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200983 91177308-0d34-0410-b5e6-96231b3b80d8
* Provide a dummy section to fix a crash with inline assembly in LTO.Rafael Espindola2014-01-22
| | | | | | Fixes pr18508. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199843 91177308-0d34-0410-b5e6-96231b3b80d8
* Resubmit r196544: Apply transformation on OS X 10.9+ and iOS 7.0+: pow(10, ↵Yi Jiang2013-12-12
| | | | | | x) ―> __exp10(x) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197109 91177308-0d34-0410-b5e6-96231b3b80d8
* Add TargetLibraryInfo in LTO passes builderYi Jiang2013-12-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197105 91177308-0d34-0410-b5e6-96231b3b80d8
* Protect user-supplied runtime library functions in LTOJustin Bogner2013-11-12
| | | | | | | | | | | | | | Add user-supplied C runtime and compiler-rt library functions to llvm.compiler.used to protect them from premature optimization by passes like -globalopt and -ipsccp. Calls to (seemingly unused) runtime library functions can be added by -instcombine and instruction lowering. Patch by Duncan Exon Smith, thanks! Fixes <rdar://problem/14740087> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194514 91177308-0d34-0410-b5e6-96231b3b80d8
* A better fix that also works on ppc: add a target tripple.Rafael Espindola2013-11-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193915 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix this test to pass on darwin now that llvm-nm is working.Rafael Espindola2013-11-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193914 91177308-0d34-0410-b5e6-96231b3b80d8
* Use \01 to disable the mangler. Should fix the 32 bit windows bots.Rafael Espindola2013-11-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193846 91177308-0d34-0410-b5e6-96231b3b80d8
* Relax check line to match what llvm-nm prints for COFF.Rafael Espindola2013-10-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193810 91177308-0d34-0410-b5e6-96231b3b80d8
* XFAIL on ppc64 too.Rafael Espindola2013-10-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193804 91177308-0d34-0410-b5e6-96231b3b80d8
* XFAIL this for now.Rafael Espindola2013-10-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193802 91177308-0d34-0410-b5e6-96231b3b80d8
* Use LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN instead of the "dso list".Rafael Espindola2013-10-31
| | | | | | | | | | | | | | | | | | | | | | There are two ways one could implement hiding of linkonce_odr symbols in LTO: * LLVM tells the linker which symbols can be hidden if not used from native files. * The linker tells LLVM which symbols are not used from other object files, but will be put in the dso symbol table if present. GOLD's API is the second option. It was implemented almost 1:1 in llvm by passing the list down to internalize. LLVM already had partial support for the first option. It is also very similar to how ld64 handles hiding these symbols when *not* doing LTO. This patch then * removes the APIs for the DSO list. * marks LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN all linkonce_odr unnamed_addr global values and other linkonce_odr whose address is not used. * makes the gold plugin responsible for handling the API mismatch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193800 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize more linkonce_odr values during LTO.Rafael Espindola2013-10-21
| | | | | | | | | | | When a linkonce_odr value that is on the dso list is not unnamed_addr we can still look to see if anything is actually using its address. If not, it is safe to hide it. This patch implements that by moving GlobalStatus to Transforms/Utils and using it in Internalize. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193090 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm/test/LTO should run also on cygwin.NAKAMURA Takumi2013-10-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192262 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix object file writing in llvm-lto on Windows.Rafael Espindola2013-10-04
| | | | | | | | We were writing in text mode. Patch by Greg Bedwell. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191985 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize linkonce_odr unnamed_addr functions during LTO.Rafael Espindola2013-10-03
| | | | | | | | | | | Generalize the API so we can distinguish symbols that are needed just for a DSO symbol table from those that are used from some native .o. The symbols that are only wanted for the dso symbol table can be dropped if llvm can prove every other dso has a copy (linkonce_odr) and the address is not important (unnamed_addr). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191922 91177308-0d34-0410-b5e6-96231b3b80d8
* Try harder to disable the LTO tests on windows.Rafael Espindola2013-10-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191836 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable this test on Win32 for now.Rafael Espindola2013-10-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191830 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a -exported-symbol option to llvm-lto.Rafael Espindola2013-10-02
| | | | | | Patch by Tom Roeder. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191825 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable building LTO on WIN32.Rafael Espindola2013-10-02
| | | | | | | | | Enable building the LTO library (.lib and.dll) and llvm-lto.exe on Windows with MSVC and Mingw as well as re-enabling the associated test. Patch by Greg Bedwell! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191823 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Enable building LTO on WIN32."Rafael Espindola2013-09-30
| | | | | | | | | | This reverts commit r191670. It was causing build failures on the msvc bots: http://bb.pgr.jp/builders/ninja-clang-i686-msc17-R/builds/5166/steps/compile/logs/stdio git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191679 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable building LTO on WIN32.Rafael Espindola2013-09-30
| | | | | | | | | Enable building the LTO library (.lib and.dll) and llvm-lto.exe on Windows with MSVC and Mingw as well as re-enabling the associated test. Patch by Greg Bedwell! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191670 91177308-0d34-0410-b5e6-96231b3b80d8
* Move LTO support library to a component, allowing it to be testedPeter Collingbourne2013-09-24
more reliably across platforms. Patch by Tom Roeder! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191343 91177308-0d34-0410-b5e6-96231b3b80d8
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