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path: root/lib/CodeGen/CGDecl.cpp
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2010-12-02Enhance the init generation logic to emit a memset followed by a few stores whenChris Lattner
a global is larger than 32 bytes and has fewer than 6 non-zero values in the initializer. Previously we'd turn something like this: char test8(int X) { char str[10000] = "abc"; into a 10K global variable which we then memcpy'd from. Now we generate: %str = alloca [10000 x i8], align 16 %tmp = getelementptr inbounds [10000 x i8]* %str, i64 0, i64 0 call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 10000, i32 16, i1 false) store i8 97, i8* %tmp, align 16 %0 = getelementptr [10000 x i8]* %str, i64 0, i64 1 store i8 98, i8* %0, align 1 %1 = getelementptr [10000 x i8]* %str, i64 0, i64 2 store i8 99, i8* %1, align 2 Which is much smaller in space and also likely faster. This is part of PR279 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120645 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-01add some infrastructure that will let us codegenChris Lattner
http://llvm.org/bugs/show_bug.cgi?id=279#c3 better. No functionality change yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120530 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-01get some i32/i8/i1 constants from Builder, which is much less painful thanChris Lattner
using ConstantInt::get. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120527 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-30Declaring local static in global blockFariborz Jahanian
literal declaration caused crash in CodeGen. This patch fixes it. pr8707 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120486 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-21Fix warning: enumeration value 'IndirectField' not handled in switch.Francois Pichet
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119924 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Fixes synthesis of type for the object which holds info.Fariborz Jahanian
about a __block cxx object. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119411 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-15Some cleanup of block API code.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119174 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-06Simplify the logic for emitting guard variables for template staticJohn McCall
data members by delaying the emission of the initializer until after linkage and visibility have been set on the global. Also, don't emit a guard unless the variable actually ends up with vague linkage, and don't use thread-safe statics in any case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118336 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-02Ensure that static local variables in function templates inherit theJohn McCall
visibility of their function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-15Death to blocks, or at least the word "block" in one particular obnoxiouslyJohn McCall
ambiguous context. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06Re-enable EH cleanups to destroy __block variables, now that we have a moment toJohn McCall
deal with the consequences. Fixes rdar://problem/8224178. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115816 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15one piece of code is responsible for the lifetime of every aggregateJohn McCall
slot. The easiest way to do that was to bundle up the information we care about for aggregate slots into a new structure which demands that its creators at least consider the question. I could probably be convinced that the ObjC 'needs GC' bit should be rolled into this structure. Implement generalized copy elision. The main obstacle here is that IR-generation must be much more careful about making sure that exactly git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-08Implement ARM static local initialization guards, which are more compact thanJohn McCall
Itanium guards and use a slightly different compiled-in API. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113330 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-07Local static block variable referecned in itsFariborz Jahanian
block-literal initializer expression causes IRgen to crash. This patch fixes by saving it in StaticLocalDecl map already used for such purposes. (radar 8390455). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113307 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Truncate block variable of bool type to i1 when itsFariborz Jahanian
value is used. This matches with non-block variable use of bool type. (Fixes radar 8390062). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113027 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03A constant initializer never matches the type of the variable it'sJohn McCall
initializing; it at best matches the element type of the variable it's initializing. Fixes PR8073. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112992 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Revert "Another i1 vs. i8 type mismatch issue. This time", it breaks some ↵Daniel Dunbar
projects. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Another i1 vs. i8 type mismatch issue. This timeFariborz Jahanian
a 'bool' byref variable in memory. Fixes radar 8382559. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-26De-memberify the VarDecl and FunctionDecl StorageClass enums.John McCall
This lets us remove Sema.h's dependency on Expr.h and Decl.h. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112156 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Change Emit{Load,Store}OfScalar to take a required Alignment argument andDaniel Dunbar
update callers as best I can. - This is a work in progress, our alignment handling is very horrible / sketchy -- I am just aiming for monotonic improvement. - Serious review appreciated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Use Ty consistently in this function.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111705 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Further adjustments to -Wglobal-constructors; works for references and directJohn McCall
initializations now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110063 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22Turn off EH cleanups for __block variables; they caused some internal buildbotJohn McCall
failures. There's a radar tracking this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109170 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Rename LazyCleanup -> Cleanup. No functionality change for these last threeJohn McCall
commits. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109000 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Switch some random local-decl cleanups over to using lazy cleanups. Turn onJohn McCall
the block-release unwind cleanup: we're never going to test it if we don't turn it on. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108992 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15When deferring the emission of declarations with initializers in C++, rememberJohn McCall
the order they appeared in the translation unit. If they get emitted, put them in their proper order. Fixes rdar://problem/7458115 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108477 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-13Teach IR generation how to lazily emit cleanups. This has a lot of advantages,John McCall
mostly in avoiding unnecessary work at compile time but also in producing more sensible block orderings. Move the destructor cleanups for local variables over to use lazy cleanups. Eventually all cleanups will do this; for now we have some awkward code duplication. Tell IR generation just to never produce landing pads in -fno-exceptions. This is a much more comprehensive solution to a problem which previously was half-solved by checks in most cleanup-generation spots. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06Validated by nightly-test runs on x86 and x86-64 darwin, including afterJohn McCall
self-host. Hopefully these results hold up on different platforms. I tried to keep the GNU ObjC runtime happy, but it's hard for me to test. Reimplement how clang generates IR for exceptions. Instead of creating new invoke destinations which sequentially chain to the previous destination, push a more semantic representation of *why* we need the cleanup/catch/filter behavior, then collect that information into a single landing pad upon request. Also reorganizes how normal cleanups (i.e. cleanups triggered by non-exceptional control flow) are generated, since it's actually fairly closely tied in with the former. Remove the need to track which cleanup scope a block is associated with. Document a lot of previously poorly-understood (by me, at least) behavior. The new framework implements the Horrible Hack (tm), which requires every landing pad to have a catch-all so that inlining will work. Clang no longer requires the Horrible Hack just to make exceptions flow correctly within a function, however. The HH is an unfortunate requirement of LLVM's EH IR. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01Remove unnecessary ASTContext parameter fromDouglas Gregor
CXXRecordDecl::getDestructor(); no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107394 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-27finally get around to doing a significant cleanup to irgen:Chris Lattner
have CGF create and make accessible standard int32,int64 and intptr types. This fixes a ton of 80 column violations introduced by LLVMContextification and cleans up stuff a lot. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106977 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26Change EmitReferenceBindingToExpr to take a decl instead of a boolean.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-22Switch over to the new caching version of getMangledName.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106549 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-15Move CodeGenOptions.h *back* into Frontend. This should have been done when theChandler Carruth
dependency edge was reversed such that CodeGen depends on Frontend. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-05Added AccessSpecDecl node.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105525 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-30Convert DeclNodes to use TableGen.Sean Hunt
The macros required for DeclNodes use have changed to match the use of StmtNodes. The FooFirst enumerator constants have been named firstFoo to match usage elsewhere. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28This cast is no longer required.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104916 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-26Patch to fix a irgen crash accessing an initialized local staticFariborz Jahanian
variable in a local function. Fixes pr7101. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25If a function definition has any sort of weak linkage, its static localJohn McCall
variables should have that linkage. Otherwise, its static local variables should have internal linkage. To avoid computing this excessively, set a function's linkage before we emit code for it. Previously we were assigning weak linkage to the static variables of static inline functions in C++, with predictably terrible results. This fixes that and also gives better linkage than 'weak' when merging is required. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Ensure that destructors are called for NRVO'd objects when theDouglas Gregor
function does not return. Thanks to Eli for pointing out this corner case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103941 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15When applying the named return value optimization, we still need toDouglas Gregor
destroy the variable along the exceptional edge; it's only during normal execution that we avoid destroying this variable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103872 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Implement a simple form of the C++ named return value optimization forDouglas Gregor
return statements. We perform NRVO only when all of the return statements in the function return the same variable. Fixes some link failures in Boost.Interprocess (which is relying on NRVO), and probably improves performance for some C++ applications. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103867 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-04Emit the globals, metadata, etc. associated with static variables even whenJohn McCall
they're unreachable. This matters because (if they're POD, or if this is C) the scope containing the variable might be reachable even if the variable isn't. Fixes PR7044. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103052 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-04Fixes a Code Gen. Crash when calling destructor on a __blockFariborz Jahanian
variabe. Blocks and their construction/destruction is wip though. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102985 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Just bail out immediately when emitting an unreachable function-local staticJohn McCall
variable. Surprisingly, this does seem to be the right way to solve this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102961 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-02Add the same 'ForVirtualBase' parameter to EmitCXXDestructorCall.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102882 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23I hate default statements. Fixes PR6874.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102160 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19Some renaming of methods, fixes typoFariborz Jahanian
(related to PR6769). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101794 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-18Local static variables must be available module-wiseFariborz Jahanian
as they are accessible in static methods in a class local to the same function. Fixes PR6769. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101756 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-04Reapply patch for adding support for address spaces and added a isVolatile ↵Mon P Wang
field to memcpy, memmove, and memset. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100305 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02Revert r100193 since it causes failures in objc in clangMon P Wang
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100200 91177308-0d34-0410-b5e6-96231b3b80d8
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