aboutsummaryrefslogtreecommitdiff
path: root/docs/LangRef.html
AgeCommit message (Collapse)Author
2010-05-07Revert r103213. It broke several sections of live website.mike-m
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103219 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Overhauled llvm/clang docs builds. Closes PR6613.mike-m
NOTE: 2nd part changeset for cfe trunk to follow. *** PRE-PATCH ISSUES ADDRESSED - clang api docs fail build from objdir - clang/llvm api docs collide in install PREFIX/ - clang/llvm main docs collide in install - clang/llvm main docs have full of hard coded destination assumptions and make use of absolute root in static html files; namely CommandGuide tools hard codes a website destination for cross references and some html cross references assume website root paths *** IMPROVEMENTS - bumped Doxygen from 1.4.x -> 1.6.3 - splits llvm/clang docs into 'main' and 'api' (doxygen) build trees - provide consistent, reliable doc builds for both main+api docs - support buid vs. install vs. website intentions - support objdir builds - document targets with 'make help' - correct clean and uninstall operations - use recursive dir delete only where absolutely necessary - added call function fn.RMRF which safeguards against botched 'rm -rf'; if any target (or any variable is evaluated) which attempts to remove any dirs which match a hard-coded 'safelist', a verbose error will be printed and make will error-stop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103213 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05Fix some ..'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Update this comment to note its relationship with the "happens-before"Dan Gohman
concept in the proposed memory model changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102911 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Delete this comment. The behavior of struct loads and stores withDan Gohman
respect to padding bytes isn't something that the dependence text needs to spell out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102910 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Describe invoke instruction dependencies. Generalize the text forDan Gohman
terminator instructions so that it applies to all terminators with multiple successors, including invoke. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102909 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Say "operations" instead of "instructions", as nsw can be applied toDan Gohman
constant expressions as well as instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102908 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30Fixed @ctor / @dtor the wrong way around in last commit. David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102741 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30Added a brief explanation of @llvm.global_{c,d}tors.David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102740 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28Rewrite the section on trap values to contain a generic descriptionDan Gohman
of dependence and define trap values in terms of dependence, instead of trying to cover the concept with a flurry of ad-hoc rules. The dependence model isn't complete yet, but it's already much more rigorous than the description it replaces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102479 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28Fix spelling errors.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102478 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28further clarify alignment of globals, fix instcombineChris Lattner
to not increase the alignment of globals with an assigned alignment and section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102476 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28improve the global variable alignment description.Chris Lattner
it is not generally valid for targets to overalign them when an alignment is specified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102474 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26Integrate Jeffery Yasskin's suggestions with respect toDan Gohman
traps flowing through memory references, add some text to better cover phi nodes and externally-visible side effects, add an example of instructions being control-dependent on a trap value, and reword some of the existing trap rules. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102399 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26Consolidate the description of volatile operations, now that some of theJeffrey Yasskin
intrinsics have volatile semantics in addition to the load and store instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102384 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26Branching or switching on trap transfers imminent undefined behaviorDan Gohman
onto control-dependent instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102381 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26Fix HTML errors that Jeffery Yasskin noticed.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102376 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24PHI nodes also do not necessarily return trap with a trap operand.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102278 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Switch getelementptr inbounds and sdiv exact from undef to trap.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102175 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22Add an initial description of a new concept: trap values, and changeDan Gohman
the definition of the nsw and nuw flags to make use of it. nsw was introduced to help optimizers answer yes to the following: // Can we change i from i32 to i64 to eliminate the cast inside the loop? for (int i = 0; i < n; ++i) A[i] *= 0.1; // Can we assume that this loop will eventually terminate? for (int i = 0; i <= n; ++i) A[i] *= 0.1; In its current form, it isn't truly sufficient for either. In the first case, if the increment overflows, it'll still have some valid i32 value; sign-extending it will produce a value which is 33 homogeneous sign bits trailed by 31 independent undef bits. If i is promoted to i64, it won't have those same values when it reaches that point. (The compiler could recover here by reasoning about how i is used by the load, but that's a lot more complicated and isn't always possible.) In the second case, there is no value for i which will be greater than n, so having the increment return undef on overflow doesn't help. Trap values are a formalization of some existing concepts that we have about LLVM IR, and give the optimizers a better basis for answering yes to both questions above. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102140 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15Pointed out by housel on #llvm.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101395 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08typoChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100738 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08document isvolatile etc.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100737 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Update langref for memcpy, memmove, and memsetMon P Wang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100611 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Have the inst emitter add the !srcloc mdnode to the machine instr.Chris Lattner
Have the asmprinter use the mdnode to scavenge a source location if present. Document this nonsense in langref. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15various cleanups from danielChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98528 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14tidy up and expound more on how half-float works.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98524 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14Document fp16 intrinsicsAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98505 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11add support, testcases, and dox for the new GHC callingChris Lattner
convention. Patch by David Terei! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98212 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08Add documentation on sibling call optimization. Rename tailcall2.ll test to ↵Evan Cheng
sibcall.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Add metadata example.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97764 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02attributes are not part of types anymore, patch by James Woodyatt!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97557 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02PerformTailCallOpt was renamed to GuaranteedTailCallOpt toDan Gohman
better reflect its meaning, now that tail call optimizations are done by default in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97530 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Fix spelling.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97447 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Fix HTML.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97170 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Fix a typo.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Clarify the description of pointer types, and move theDan Gohman
address space content to its own paragraph. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97143 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Update LangRef to match the code; pointers default to being 64-bit.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96873 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16Add support for emitting non-temporal stores for DAGs markedDavid Greene
non-temporal. Fix from r96241 for botched encoding of MOVNTDQ. Add documentation for !nontemporal metadata. Add a simpler movnt testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96386 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12Add support for a union type in LLVM IR. Patch by Talin!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12Add a new function attribute, 'alignstack'. It will indicate (when the backendsCharles Davis
implement support for it) that the stack should be forcibly realigned in the prologue (and the process reversed in the epilogue). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06Reintroduce the InlineHint function attribute.Jakob Stoklund Olesen
This time it's for real! I am going to hook this up in the frontends as well. The inliner has some experimental heuristics for dealing with the inline hint. When given a -respect-inlinehint option, functions marked with the inline keyword are given a threshold just above the default for -O3. We need some experiments to determine if that is the right thing to do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95466 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15move "Metadata Nodes and Metadata Strings" section to the right place in theChris Lattner
document and edit it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15Remove the InlineHint attribute. There are no current or plannedEric Christopher
users. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93558 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15mention that unwind isn't to be trusted, patch by Dustin LaurenceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93518 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-11Add top level section for named metadata.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93172 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-11Improve unclear bits and inaccuracies in structure and insertvalueJeffrey Yasskin
documentation. Patch by Dustin Laurence! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93170 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-09Clarify the requirements for a "tail call" to actually be optimized into aJeffrey Yasskin
jump. People clearly weren't finding the extra requirements in CodeGenerator.html. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93070 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-09improve documentation for linkonce to be less confusing.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93066 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-08Grammar thinko.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93027 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-09-24 08:26:45 +0000