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* Add some details to the llvm-cov documentation. <rdar://problem/15819496>Bob Wilson2014-05-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208098 91177308-0d34-0410-b5e6-96231b3b80d8
* Update programmers manual to cover llvm::function_ref, and add a note to theRichard Smith2014-05-06
| | | | | | | coding standard suggesting using it instead of the (unavailable) std::function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208067 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert accidentally-committed files.Richard Smith2014-05-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208034 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit r208025, reverted in r208030, with a fix for a conformance issueRichard Smith2014-05-06
| | | | | | | which GCC detects and Clang does not! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208033 91177308-0d34-0410-b5e6-96231b3b80d8
* Be a bit more specific in the release notes.Rafael Espindola2014-05-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207981 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the -disable-cfi option.Rafael Espindola2014-05-05
| | | | | | | This also add a release note about it. If this stays I will cleanup MC next week. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207977 91177308-0d34-0410-b5e6-96231b3b80d8
* Update docs still mentioning LLVM_ENABLE_CXX11Alp Toker2014-05-03
| | | | | | C++11 is now required. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207914 91177308-0d34-0410-b5e6-96231b3b80d8
* Updated Doxygen link for InstIterator.h.Yaron Keren2014-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207906 91177308-0d34-0410-b5e6-96231b3b80d8
* InstIterator.h lives in llvm/IR.Yaron Keren2014-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207903 91177308-0d34-0410-b5e6-96231b3b80d8
* [tablegen] !strconcat accepts more than two arguments but this wasn't ↵Daniel Sanders2014-05-02
| | | | | | | | | | | | | | | | | | | | documented or tested. Summary: * Updated the documentation * Added a test for >2 arguments * Added a check for the lexical concatenation * Made the existing test a bit stricter. Reviewers: t.p.northover Reviewed By: t.p.northover Subscribers: t.p.northover, llvm-commits Differential Revision: http://reviews.llvm.org/D3485 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207865 91177308-0d34-0410-b5e6-96231b3b80d8
* Code style fix from Duncan P. N. Exon Smith.Yaron Keren2014-05-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207831 91177308-0d34-0410-b5e6-96231b3b80d8
* [IR] Make {extract,insert}element accept an index of any integer type.Michael J. Spencer2014-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Given the following C code llvm currently generates suboptimal code for x86-64: __m128 bss4( const __m128 *ptr, size_t i, size_t j ) { float f = ptr[i][j]; return (__m128) { f, f, f, f }; } ================================================= define <4 x float> @_Z4bss4PKDv4_fmm(<4 x float>* nocapture readonly %ptr, i64 %i, i64 %j) #0 { %a1 = getelementptr inbounds <4 x float>* %ptr, i64 %i %a2 = load <4 x float>* %a1, align 16, !tbaa !1 %a3 = trunc i64 %j to i32 %a4 = extractelement <4 x float> %a2, i32 %a3 %a5 = insertelement <4 x float> undef, float %a4, i32 0 %a6 = insertelement <4 x float> %a5, float %a4, i32 1 %a7 = insertelement <4 x float> %a6, float %a4, i32 2 %a8 = insertelement <4 x float> %a7, float %a4, i32 3 ret <4 x float> %a8 } ================================================= shlq $4, %rsi addq %rdi, %rsi movslq %edx, %rax vbroadcastss (%rsi,%rax,4), %xmm0 retq ================================================= The movslq is uneeded, but is present because of the trunc to i32 and then sext back to i64 that the backend adds for vbroadcastss. We can't remove it because it changes the meaning. The IR that clang generates is already suboptimal. What clang really should emit is: %a4 = extractelement <4 x float> %a2, i64 %j This patch makes that legal. A separate patch will teach clang to do it. Differential Revision: http://reviews.llvm.org/D3519 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207801 91177308-0d34-0410-b5e6-96231b3b80d8
* Update post-r203364 ↵Yaron Keren2014-05-01
| | | | | | | | | | | | http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140303/207915.html and ranged for loops. http://reviews.llvm.org/D3582 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207755 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: support stack probe emission for Windows on ARMSaleem Abdulrasool2014-04-30
| | | | | | | | | | | | | | | | | This introduces the stack lowering emission of the stack probe function for Windows on ARM. The stack on Windows on ARM is a dynamically paged stack where any page allocation which crosses a page boundary of the following guard page will cause a page fault. This page fault must be handled by the kernel to ensure that the page is faulted in. If this does not occur and a write access any memory beyond that, the page fault will go unserviced, resulting in an abnormal program termination. The watermark for the stack probe appears to be at 4080 bytes (for accommodating the stack guard canaries and stack alignment) when SSP is enabled. Otherwise, the stack probe is emitted on the page size boundary of 4096 bytes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207615 91177308-0d34-0410-b5e6-96231b3b80d8
* Document recently added sphinx documentation options inDan Liew2014-04-29
| | | | | | CMake. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207543 91177308-0d34-0410-b5e6-96231b3b80d8
* Add 'musttail' marker to call instructionsReid Kleckner2014-04-24
| | | | | | | | | | | | This is similar to the 'tail' marker, except that it guarantees that tail call optimization will occur. It also comes with convervative IR verification rules that ensure that tail call optimization is possible. Reviewers: nicholas Differential Revision: http://llvm-reviews.chandlerc.com/D3240 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207143 91177308-0d34-0410-b5e6-96231b3b80d8
* [docs] Add a note to docs/README.txtSean Silva2014-04-22
| | | | | | | | | Added note to docs/README.txt on how to check the reachibility of external links in the documentation. Patch by Dan Liew! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206924 91177308-0d34-0410-b5e6-96231b3b80d8
* Added Sphinx documentation generation to CMake build system.Reid Kleckner2014-04-18
| | | | | | | | | | | | | | | | | | | | | The option LLVM_ENABLE_SPHINX option enables the "docs-llvm-html", "docs-llvm-man" targets but does not build them by default. The following CMake options have been added that control what targets are made available SPHINX_OUTPUT_HTML SPHINX_OUTPUT_MAN If LLVM_BUILD_DOCS is enabled then the enabled docs-llvm-* targets will be built by default and if ``make install`` is run then docs-llvm-html and docs-llvm-man will be installed (tested on Linux only). The add_sphinx_target function is in its own file so it can be included by other projects that use Sphinx for their documentation. Patch by Daniel Liew <daniel.liew@imperial.ac.uk>! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206655 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove -simplify-libcalls pass form Passes documentationReid Kleckner2014-04-18
| | | | | | | | | | | | This pass was removed in r184459. Also added note that the InstCombine pass does library call simplification. Patch slightly modified from one by Daniel Liew <daniel.liew@imperial.ac.uk>! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206650 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix example for VS2012.Paul Robinson2014-04-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206544 91177308-0d34-0410-b5e6-96231b3b80d8
* C++11: Compatibility with (C++03 => MSVC)Duncan P. N. Exon Smith2014-04-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206481 91177308-0d34-0410-b5e6-96231b3b80d8
* C++11: Document some limitations imposed by MSVCDuncan P. N. Exon Smith2014-04-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206480 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove documentation for a deleted pass.Eric Christopher2014-04-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206097 91177308-0d34-0410-b5e6-96231b3b80d8
* blockfreq: Document BlockFrequencyInfo terminologyDuncan P. N. Exon Smith2014-04-11
| | | | | | | | | Documents terminology used in the forthcoming rewrite of BlockFrequencyInfo. <rdar://problem/14292693> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206086 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the segmented stack switch to a function attributeReid Kleckner2014-04-10
| | | | | | | | | This removes the -segmented-stacks command line flag in favor of a per-function "split-stack" attribute. Patch by Luqman Aden and Alex Crichton! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205997 91177308-0d34-0410-b5e6-96231b3b80d8
* YAMLIO: Allow scalars to dictate quotation rulesDavid Majnemer2014-04-10
| | | | | | | Introduce ScalarTraits::mustQuote which determines whether or not a StringRef needs quoting before it is acceptable to output. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205955 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some doc and comment typosAlp Toker2014-04-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205899 91177308-0d34-0410-b5e6-96231b3b80d8
* [docs] VCS contains a record of authorshipSean Silva2014-04-08
| | | | | | No need to explicitly mention the author in the document. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205793 91177308-0d34-0410-b5e6-96231b3b80d8
* [docs] Fix up some links to the preferred style.Sean Silva2014-04-08
| | | | | | | | | | | | | :doc:`...` and :ref:`...` links help Sphinx keep track the dependencies between documents and ensure that they are not pointing to nowhere. Raw HTML links work just fine and are easier for people less familiar with reST/Sphinx. They are easy to change over to the :doc:/:ref: style after the fact so this is not a problem. This commit doesn't fix all of them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205792 91177308-0d34-0410-b5e6-96231b3b80d8
* [docs] Fix some linksSean Silva2014-04-07
| | | | | | | | The TableGen docs have changed structure Patch by Tay Ray Chuan! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205744 91177308-0d34-0410-b5e6-96231b3b80d8
* [docs] Update link titleSean Silva2014-04-07
| | | | | | | docs/TableGen/ is not really just "fundamentals" anymore, but rather more of a portal for all things TableGen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205743 91177308-0d34-0410-b5e6-96231b3b80d8
* [docs] Fix some Sphinx warnings that have crept in.Sean Silva2014-04-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205742 91177308-0d34-0410-b5e6-96231b3b80d8
* Make docs point to new domain.Manuel Klimek2014-04-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205701 91177308-0d34-0410-b5e6-96231b3b80d8
* Stack map docs. Remove some stray markup.Andrew Trick2014-04-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205515 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor update to the stack map documentation.Andrew Trick2014-04-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205513 91177308-0d34-0410-b5e6-96231b3b80d8
* Recover TableGen/LangRef, make it officialRenato Golin2014-04-01
| | | | | | | | | | | | | Making the new TableGen documentation official and marking the old file as "Moved". Also, reverting the original LangRef as the normative formal description of the language, while keeping the "new" LangRef as LangIntro for the less inlcined to reading language grammars. We should remove TableGenFundamentals.rst one day, but for now, just a warning that it moved will have to do, while we make sure there are no more links to it from elsewhere. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205289 91177308-0d34-0410-b5e6-96231b3b80d8
* [Stackmaps] Update the stackmap format to use 64-bit relocations for the ↵Juergen Ributzka2014-03-31
| | | | | | | | | | | | function address and properly align all entries. This commit updates the stackmap format to version 1 to indicate the reorganizaion of several fields. This was done in order to align stackmap entries to their natural alignment and to minimize padding. Fixes <rdar://problem/16005902> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205254 91177308-0d34-0410-b5e6-96231b3b80d8
* Exception handling docs: Clarify how the llvm.eh.* intrinsics are usedMark Seaborn2014-03-28
| | | | | | | | | The non-SJLJ and SJLJ intrinsics are generated by the frontend and backend respectively. Differential Revision: http://llvm-reviews.chandlerc.com/D3010 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205017 91177308-0d34-0410-b5e6-96231b3b80d8
* Prevent alias from pointing to weak aliases.Rafael Espindola2014-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds back r204781. Original message: Aliases are just another name for a position in a file. As such, the regular symbol resolutions are not applied. For example, given define void @my_func() { ret void } @my_alias = alias weak void ()* @my_func @my_alias2 = alias void ()* @my_alias We produce without this patch: .weak my_alias my_alias = my_func .globl my_alias2 my_alias2 = my_alias That is, in the resulting ELF file my_alias, my_func and my_alias are just 3 names pointing to offset 0 of .text. That is *not* the semantics of IR linking. For example, linking in a @my_alias = alias void ()* @other_func would require the strong my_alias to override the weak one and my_alias2 would end up pointing to other_func. There is no way to represent that with aliases being just another name, so the best solution seems to be to just disallow it, converting a miscompile into an error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204934 91177308-0d34-0410-b5e6-96231b3b80d8
* inalloca: *Really* fix the docsReid Kleckner2014-03-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204890 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unneeded stale type.Reid Kleckner2014-03-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204889 91177308-0d34-0410-b5e6-96231b3b80d8
* inalloca: Fix incorrect example IR and remove LangRef warningReid Kleckner2014-03-27
| | | | | | | | | | The LangRef warning wasn't formatting the way I intended it to anyway. Surprisingly inalloca appears to work, even when optimizations are enabled. We generate very bad code for it, but we can self-host and run lots of big tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204888 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarify that select is only non-branching on the IR-level, it often endsJoerg Sonnenberger2014-03-26
| | | | | | | up as jump table or other forms of branches on the machine level. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204819 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarify llvm.clear_cache description.Joerg Sonnenberger2014-03-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204812 91177308-0d34-0410-b5e6-96231b3b80d8
* Change @llvm.clear_cache default to call rt-libRenato Golin2014-03-26
| | | | | | | | | | | After some discussion on IRC, emitting a call to the library function seems like a better default, since it will move from a compiler internal error to a linker error, that the user can work around until LLVM is fixed. I'm also adding a note on the responsibility of the user to confirm that the cache was cleared on platforms where nothing is done. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204806 91177308-0d34-0410-b5e6-96231b3b80d8
* Add @llvm.clear_cache builtinRenato Golin2014-03-26
| | | | | | | | | | | | | | | | | Implementing the LLVM part of the call to __builtin___clear_cache which translates into an intrinsic @llvm.clear_cache and is lowered by each target, either to a call to __clear_cache or nothing at all incase the caches are unified. Updating LangRef and adding some tests for the implemented architectures. Other archs will have to implement the method in case this builtin has to be compiled for it, since the default behaviour is to bail unimplemented. A Clang patch is required for the builtin to be lowered into the llvm intrinsic. This will be done next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204802 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Prevent alias from pointing to weak aliases."Rafael Espindola2014-03-26
| | | | | | | | | This reverts commit r204781. I will follow up to with msan folks to see what is what they were trying to do with aliases to weak aliases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204784 91177308-0d34-0410-b5e6-96231b3b80d8
* Prevent alias from pointing to weak aliases.Rafael Espindola2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Aliases are just another name for a position in a file. As such, the regular symbol resolutions are not applied. For example, given define void @my_func() { ret void } @my_alias = alias weak void ()* @my_func @my_alias2 = alias void ()* @my_alias We produce without this patch: .weak my_alias my_alias = my_func .globl my_alias2 my_alias2 = my_alias That is, in the resulting ELF file my_alias, my_func and my_alias are just 3 names pointing to offset 0 of .text. That is *not* the semantics of IR linking. For example, linking in a @my_alias = alias void ()* @other_func would require the strong my_alias to override the weak one and my_alias2 would end up pointing to other_func. There is no way to represent that with aliases being just another name, so the best solution seems to be to just disallow it, converting a miscompile into an error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204781 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding some very nascent information about the clang tablegen backends, with ↵Aaron Ballman2014-03-24
| | | | | | a promise to add more information later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204635 91177308-0d34-0410-b5e6-96231b3b80d8
* Update release notes with EHABI current behaviourRenato Golin2014-03-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204598 91177308-0d34-0410-b5e6-96231b3b80d8
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