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2011-05-02Skip extra copy from aggregate where it isn't necessary; ↵Eli Friedman
rdar://problem/8139919 . This shouldn't make much of a difference at -O3, but should substantially reduce the number of generated memcpy's at -O0. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130717 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02Switch CallArgList from an std::pair to a new CallArg struct (which will ↵Eli Friedman
eventually gain more members). Working towards modifying call emission to avoid unnecessary copies. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130700 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Implement ARM pcs attribute. Basically it's another way of calling ↵Anton Korobeynikov
convention selection (AAPCS or AAPCS+VFP), similar to fastcall / stdcall / whatevercall seen on x86. In particular, all library functions should always be AAPCS regardless of floating point ABI used. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129534 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09PR8369: make __attribute((regparm(0))) work correctly. Original patch byEli Friedman
pageexec@freemail.hu, tweaks by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18Add support for language-specific address spaces. On top of that,Peter Collingbourne
add support for the OpenCL __private, __local, __constant and __global address spaces, as well as the __read_only, _read_write and __write_only image access specifiers. Patch originally by ARM; language-specific address space support by myself. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127915 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-13Instead of storing an ASTContext* in FunctionProtoTypes with computed ↵Sebastian Redl
noexcept specifiers, unique FunctionProtoTypes with a ContextualFoldingSet, as suggested by John McCall. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127568 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-12Propagate the new exception information to FunctionProtoType.Sebastian Redl
Change the interface to expose the new information and deal with the enormous fallout. Introduce the new ExceptionSpecificationType value EST_DynamicNone to more easily deal with empty throw specifications. Update the tests for noexcept and fix the various bugs uncovered, such as lack of tentative parsing support. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127537 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-11Use a slightly more semantic interface for emitting call arguments.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127494 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10lib/CodeGen/CGCall.cpp: Don't invoke multiple Builder.CreateBitCast() on ↵NAKAMURA Takumi
Builder.CreateMemCpy. Or we would see sideeffect incompatibility among gcc and clang. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127405 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-09Use the "undergoes default argument promotion" bit on parameters toJohn McCall
simplify the logic of initializing function parameters so that we don't need both a variable declaration and a type in FunctionArgList. This also means that we need to propagate the CGFunctionInfo down in a lot of places rather than recalculating it from the FAL. There's more we can do to eliminate redundancy here, and I've left FIXMEs behind to do it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127314 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-03Encode argument numbering in debug info so that code generator can emit them ↵Devang Patel
in order. This fixes few blocks.exp regressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126960 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Revert "Add CC_Win64ThisCall and set it in the necessary places."Tilmann Scheller
This reverts commit 126863. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126886 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02revert r126858.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126874 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Add CC_Win64ThisCall and set it in the necessary places.Tilmann Scheller
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126863 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Encode argument numbering in debug info so that code generator can emit them ↵Devang Patel
in order. This fixes few blocks.exp regressions. Reapply r126795 with a fix (one character change) for gdb testsuite regressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126858 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Revert r126794.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126848 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01Encode argument numbering in debug info so that code generator can emit them ↵Devang Patel
in order. This fixes few blocks.exp regressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126795 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01objc IRGen for Next runtime message API.Fariborz Jahanian
The prototype for objc_msgSend() is technically variadic - `id objc_msgSend(id, SEL, ...)`. But all method calls should use a prototype that matches the method, not the prototype for objc_msgSend itself(). // rdar://9048030 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126754 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16Simplify test to check an aggregate argument that has non trivial ↵Devang Patel
constructor or destructor. This patch rewrites r125142. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125632 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-10Fix family-friendly-o, tsk tsk.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125293 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Driver/Frontend: Wire up -mregparm=.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125201 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09If an aggregate argument is passed indirectly because it has non trivialDevang Patel
destructor or copy constructor than let debug info know about it. Radar 8945514. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125142 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-08Reorganize CodeGen{Function,Module} to eliminate the unfortunateJohn McCall
Block{Function,Module} base class. Minor other refactorings. Fixed a few address-space bugs while I was there. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125085 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-19Replace calls to getTypeSize() and getTypeAlign() with their 'InChars' Ken Dyck
counterparts where char units are needed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123805 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30Simplify mem{cpy, move, set} creation with IRBuilder.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Fix Whitespace.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116798 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-16IRgen/ABI: Add support for realigning structures which are passed by indirectDaniel Dunbar
reference. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114114 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Add symantic support for the Pascal calling convention viaDawn Perchik
"__attribute((pascal))" or "__pascal" (and "_pascal" under -fborland-extensions). Support still needs to be added to llvm. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112939 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Re-commit r112916 with an additional fix for the self-host failures.John McCall
I've audited the remaining getFunctionInfo call sites. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112936 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Revert r112916, it's breaking selfhost pretty badly.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03It's not safe to use the generic CXXMethodDecl overload of CGT::getFunctionInfoJohn McCall
to set up a destructor call, because ABIs can tweak these conventions. Fixes rdar://problem/8386802. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112916 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Teach IR generation to return 'this' from constructors and destructorsJohn McCall
under the ARM ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112588 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Switch more MakeAddr() users to MakeAddrLValue; this time for calls ↵Daniel Dunbar
which were previously not computing the qualifier list. In most cases, I don't think it matters, but I believe this is conservatively more correct / consistent. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111717 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
2010-07-30fix PR5179 and correctly fix PR5831 to not miscompile.Chris Lattner
The X86-64 ABI code didn't handle the case when a struct would get classified and turn up as "NoClass INTEGER" for example. This is perfectly possible when the first slot is all padding (e.g. due to empty base classes). In this situation, the first 8-byte doesn't take a register at all, only the second 8-byte does. This fixes this by enhancing the x86-64 abi stuff to allow and handle this case, reverts the broken fix for PR5831, and enhances the target independent stuff to be able to handle an argument value in registers being accessed at an offset from the memory value. This is the last x86-64 calling convention related miscompile that I'm aware of. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109848 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29fix a builder, why didn't clang++ catch this?Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109735 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29Kill off the 'coerce' ABI passing form. Now 'direct' and 'extend' alwaysChris Lattner
have a "coerce to" type which often matches the default lowering of Clang type to LLVM IR type, but the coerce case can be handled by making them not be the same. This simplifies things and fixes issues where X86-64 abi lowering would return coerce after making preferred types exactly match up. This caused us to compile: typedef float v4f32 __attribute__((__vector_size__(16))); v4f32 foo(v4f32 X) { return X+X; } into this code at -O0: define <4 x float> @foo(<4 x float> %X.coerce) nounwind { entry: %retval = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=2] %coerce = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=2] %X.addr = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=3] store <4 x float> %X.coerce, <4 x float>* %coerce %X = load <4 x float>* %coerce ; <<4 x float>> [#uses=1] store <4 x float> %X, <4 x float>* %X.addr %tmp = load <4 x float>* %X.addr ; <<4 x float>> [#uses=1] %tmp1 = load <4 x float>* %X.addr ; <<4 x float>> [#uses=1] %add = fadd <4 x float> %tmp, %tmp1 ; <<4 x float>> [#uses=1] store <4 x float> %add, <4 x float>* %retval %0 = load <4 x float>* %retval ; <<4 x float>> [#uses=1] ret <4 x float> %0 } Now we get: define <4 x float> @foo(<4 x float> %X) nounwind { entry: %X.addr = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=3] store <4 x float> %X, <4 x float>* %X.addr %tmp = load <4 x float>* %X.addr ; <<4 x float>> [#uses=1] %tmp1 = load <4 x float>* %X.addr ; <<4 x float>> [#uses=1] %add = fadd <4 x float> %tmp, %tmp1 ; <<4 x float>> [#uses=1] ret <4 x float> %add } This implements rdar://8248065 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109733 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29dissolve some more complexity: make the x86-64 abi lowering codeChris Lattner
compute its own preferred types instead of having CGT compute them then pass them (circuituously) down into ABIInfo. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29now that ABIInfo depends on CGT, it has trivial access to suchChris Lattner
things as TargetData, ASTContext, LLVMContext etc. Stop passing them through so many APIs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109723 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28tidy upChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109699 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28some cleanups and get alignments correct for various coerce cases.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Vectors are not integer types, so the type system should not classifyDouglas Gregor
them as such. Type::is(Signed|Unsigned|)IntegerType() now return false for vector types, and new functions has(Signed|Unsigned|)IntegerRepresentation() cover integer types and vector-of-integer types. This fixes a bunch of latent bugs. Patch from Anton Yartsev! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109229 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Fix regression caused by r108911.Devang Patel
Do not override known debug loc with unknown debug loc. This is tested by sections.exp in gdb testsuite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109022 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Use getDebugLoc and setDebugLoc instead of getDbgMetadata and setDbgMetadata,Dan Gohman
avoiding MDNode overhead. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108911 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14CodeGen/ObjC/NeXT: Fix Obj-C message send to match llvm-gcc when choosingDaniel Dunbar
whether to use objc_msgSend_fpret; the choice is target dependent, not Obj-C ABI dependent. - <rdar://problem/8139758> arm objc _objc_msgSend_fpret bug git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108379 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Mark calls to 'throw()' functions as nounwind, and mark the functions nounwindJohn McCall
as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107858 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
2010-07-05Generate fewer first class aggregate values for otherChris Lattner
coerce cases (e.g. {double,int}) which avoids fastisel bailing out at -O0. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107628 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-05in the "coerce" case, the ABI handling code ends up making theChris Lattner
alloca for an argument. Make sure the argument gets the proper decl alignment, which may be different than the type alignment. This fixes PR7567 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107627 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01fix rdar://8147692 - yet another crash due to my abi work.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107387 91177308-0d34-0410-b5e6-96231b3b80d8
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