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path: root/lib/CodeGen/TargetInfo.cpp
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2014-03-03Fix handling of byval arguments to set the alignment properly.Dan Gohman
Also, fix the way we override DefaultABIInfo methods, since classifyArgumentType and classifyReturnType are not actually virtual. Also, DefaultABIInfo does the right thing for floating-point types, so we don't need to special-case them.
2014-02-28Drop addAsmMemoryAroundSyncSynchronize() and asmMemoryIsFence().Dan Gohman
For us, staying in sync with upstream on issues related to the memory model is more important. None of clang, gcc, nor icc appear to offer these features. If such features are desirable, they should ideally be implemented in upstream clang, in a target-independent way, since this issue would affect users of all platforms which support threads, not just PNaCl or Emscripten.
2014-02-24Introduce the asmjs-unknown-emscripten target triple.Dan Gohman
Notable changes from le32-unknown-nacl so far include: - Set i32 as the legal integer set, to help the optimizer avoid creating needlessly inefficient code for asm.js. - We can use llvm.pow. - Don't predefine __ELF__ or __pnacl__ so that we don't need to undefine them later. - Do predefine asm.js and Emscripten macros, so that we don't need to define them later. - Don't provide __has_feature(pnacl).
2013-08-07Treat __sync_synchronize and asm("":::"memory") as stronger fences.JF Bastien
This is a companion patch to: https://codereview.chromium.org/22240002/ https://codereview.chromium.org/22474008/ and deals with the Clang-side of things. The above patch will handle the fallouts of this Clang patch, including some changes to un-duplicate work that RewriteAsmDirectives.cpp does. The goal of this patch is to force some extra ordering on non-atomics for le32 which LLVM doesn't necessarily provide. R=eliben@chromium.org TEST= ninja check-all BUG= https://code.google.com/p/nativeclient/issues/detail?id=3475 BUG= https://code.google.com/p/nativeclient/issues/detail?id=3611 Review URL: https://codereview.chromium.org/22294002
2013-07-15Merge commit '20c7d45a4da9f58ad805ad1d37f92fe7dc232ec8'Eli Bendersky
Conflicts: lib/CodeGen/ItaniumCXXABI.cpp
2013-07-12Merge branch 'master' of http://git.chromium.org/native_client/pnacl-clangEli Bendersky
2013-07-10Cherry-picking the pow-for-le32 fix from upstream clang.Eli Bendersky
SVN log from upstream clang: r185568 | eliben | 2013-07-03 12:19:12 -0700 (Wed, 03 Jul 2013) Add target hook CodeGen queries when generating builtin pow*. Without fmath-errno, Clang currently generates calls to @llvm.pow.* intrinsics when it sees pow*(). This may not be suitable for all targets (for example le32/PNaCl), so the attached patch adds a target hook that CodeGen queries. The target can state its preference for having or not having the intrinsic generated. Non-PNaCl behavior remains unchanged; PNaCl-specific test added. BUG= https://code.google.com/p/nativeclient/issues/detail?id=3513 R=dschuff@chromium.org Review URL: https://codereview.chromium.org/18953003
2013-05-06Add SystemZ supportUlrich Weigand
This patch then adds all the usual platform-specific pieces for SystemZ: driver support, basic target info, register names and constraints, ABI info and vararg support. It also adds new tests to verify pre-defined macros and inline asm, and updates a test for the minimum alignment change. This version of the patch incorporates feedback from reviews by Eric Christopher and John McCall. Thanks to all reviewers! Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181211 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-17Set SRet flags properly in '-cxx-abi microsoft'.Timur Iskhodzhanov
Also, - abstract out the indirect/in memory/in registers decisions into the CGCXXABI - fix handling of empty struct arguments for '-cxx-abi microsoft' - add/fix tests git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179681 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-16Standardize accesses to the TargetInfo in IR-gen.John McCall
Patch by Stephen Lin! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179638 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-08The PNaCl target no longer permits __attribute__((regparm)).Eli Bendersky
Remove the custom lowering code dealing with it, disallow it in PNaclTargetInfo and adjust tests accordingly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179059 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-05Proper prefix for doxygen commentsEli Bendersky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178878 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-04Add some documentation for PNaClABIInfo.Eli Bendersky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178802 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-30Use kernel metadata to differentiate between kernel and deviceJustin Holewinski
functions for the NVPTX target. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178418 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25IR-gen should not generate an MMX types unless the code is explicitly using MMXChad Rosier
intrinsics. rdar://13213542 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177911 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-19Revert r177329.Rafael Espindola
If this should not happen, we should have an assert. If it should happen, we should have a test and remove the comment. In no case should we have this self inconsistent code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177399 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-18This code works around what appears to be a bug in another part of clang.Reed Kotler
I have filed http://llvm.org/bugs/show_bug.cgi?id=15538 against clang. This code is safer anyway because "cast" assumes you really know that it's okay to make the cast. In this case isa should not be false and dyn_cast should not return null as far as I understand. But everything else is valid so I did not want to revert my previous patch for attributes mips16/nomips16 or use an llvm_unreachable here which would make a number of our tests fail for mips. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177329 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Cause the mips16/nomips16 attribute to be passed to LLVM from ClangReed Kotler
in the LLVM assembly language output. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176971 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Change hasAggregateLLVMType, which conflates complex andJohn McCall
aggregate types in a profoundly wrong way that has to be worked around in every call site, to getEvaluationKind, which classifies and distinguishes between all of these cases. Also, normalize the API for loading and storing complexes. I'm working on a larger patch and wanted to pull these changes out, but it would have be annoying to detangle them from each other. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176656 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-28Use the actual ABI-determined C calling convention for runtimeJohn McCall
calls and declarations. LLVM has a default CC determined by the target triple. This is not always the actual default CC for the ABI we've been asked to target, and so we sometimes find ourselves annotating all user functions with an explicit calling convention. Since these calling conventions usually agree for the simple set of argument types passed to most runtime functions, using the LLVM-default CC in principle has no effect. However, the LLVM optimizer goes into histrionics if it sees this kind of formal CC mismatch, since it has no concept of CC compatibility. Therefore, if this module happens to define the "runtime" function, or got LTO'ed with such a definition, we can miscompile; so it's quite important to get this right. Defining runtime functions locally is quite common in embedded applications. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176286 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31Add support for AArch64 target.Tim Northover
In cooperation with the LLVM patch, this should implement all scalar front-end parts of the C and C++ ABIs for AArch64. This patch excludes the NEON support also reviewed due to an outbreak of batshit insanity in our legal department. That will be committed soon bringing the changes to precisely what has been approved. Further reviews would be gratefully received. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174055 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-24[mips] Do not emit i32 padding if target ABI is O32. This was causing backendAkira Hatanaka
to pass floating point arguments to be passed in integer registers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173375 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-23Use the AttributeSet when adding multiple attributes and an Attribute::AttrKindBill Wendling
when adding a single attribute to the function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173211 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16First step in implementation of mips16 and nomips16 attributes.Reed Kotler
Waiting for new llvm attribute code for the next step. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172626 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14This patch addresses varargs processing for small complex types underBill Schmidt
the 64-bit PowerPC ELF ABI. The ABI requires that the real and imaginary parts of a complex argument each occupy their own doubleword. Arguments smaller than 8 bytes are right-adjusted within the doubleword. Clang expects EmitVAARG() to return a pointer to a structure in which the real and imaginary parts are packed adjacently in memory. To accomplish this, we generate code to load the code appropriately from the varargs location and pack the values into a temporary variable in the form Clang expects, returning a pointer to that structure. The test case demonstrates correct code generation for all "small" complex types on PPC64: int, short, char, and float. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172438 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02Rewrite #includes for llvm/Foo.h to llvm/IR/Foo.h as appropriate toChandler Carruth
reflect the migration in r171366. Re-sort the #include lines to reflect the new paths. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171369 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-20Rename llvm::Attributes to llvm::Attribute.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170722 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-20Revert r170500. It over-zealously converted *ALL* things named Attributes, ↵Bill Wendling
which is wrong here. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170721 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-19Rename the 'Attributes' class to 'Attribute'. It's going to represent a ↵Bill Wendling
single attribute in the future. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170500 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17This patch fixes PR13624, which notes a 64-bit PowerPC ELF ABIBill Schmidt
incompatibility with how complex values are returned. It is sufficient to flag all complex types as direct rather than indirect. A new test case is provided that checks correct IR generation for the various supported flavors of _Complex. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170302 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07s/AttrListPtr/AttributeSet/g to better label what this class is going to be ↵Bill Wendling
in the near future. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169652 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04Adapt to LLVM commit 169291 which streamlines the usage of NaCl/NativeClientEli Bendersky
in the triple. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169292 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04Sort all of Clang's files under 'lib', and fix up the broken headersChandler Carruth
uncovered. This required manually correcting all of the incorrect main-module headers I could find, and running the new llvm/utils/sort_includes.py script over the files. I also manually added quite a few missing headers that were uncovered by shuffling the order or moving headers up to be main-module-headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169237 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29Fix a small calling-convention bug for x86-32. PR14453.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168959 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-27This patch addresses an incompatibility relative to the 64-bit PowerPCBill Schmidt
ELF ABI. Complex values are to be passed in registers as though the real and imaginary parts were passed as separate parameters. Prior to this patch, complex values were passed as byval aggregates. It turns out that specifying getDirect() for all complex types when classifying the argument type results in the desired behavior. The new Clang test case verifies that the correct LLVM IR is generated for caller and callee for each of the underlying types for _Complex. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168673 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-26MSPGCC renamed ISR vectors from vector_<address> to __isr_<number>. This ↵Anton Korobeynikov
patch makes Clang reflect this scheme. Patch by Job Noorman! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168598 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-16A step towards sorting out handling of triviality of special members in C++11.Richard Smith
Separate out the notions of 'has a trivial special member' and 'has a non-trivial special member', and use them appropriately. These are not opposites of one another (there might be no special member, or in C++11 there might be a trivial one and a non-trivial one). The CXXRecordDecl predicates continue to produce incorrect results, but do so in fewer cases now, and they document the cases where they might be wrong. No functionality changes are intended here (they will come when the predicates start producing the right answers...). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168119 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-06Cleanup: 80-column violationManman Ren
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167476 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-06ARM byval: when type alignment is bigger than ABI alignment, instead ofManman Ren
disabling byval, we set realign to true. It will perform an aligned alloca, and call memcpy to copy the byval argument to the local variable. Change the size threshold back to 64 bytes. rdar://12596507 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167440 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-05ARM byval: when type alignment is bigger than ABI alignment, we can't guaranteeManman Ren
the type alignment of the byval argument. This patch will disable byval in this case, it also increases the size threshold for turning on byval. A backend fix will be attempted. rdar://12596507 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167416 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-05On PowerPC64, integer arguments and return values need to be sign- orUlrich Weigand
zero-extended to 64 bits. This information is currently provided to the back end by setting "signext" or "zeroext" attributes. However, this is done only for integer types *smaller* than i32, not for i32 itself. This causes clang to generate code violating the ABI, which results in a failure of the tramp3d-v4 test case (due to calling a system library routine without ABI-required extension). This patch implements custom versions of classifyArgumentType and classifyReturnType for PPC64_SVR4_ABIInfo, which are the same as the default versions except that they also classify "int" and "unsigned int" as types needing extending. This fixed tramp3d-v4 on PowerPC64. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167393 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31ARM AAPCS-VFP: fix tracking of allocated VFP registers.Manman Ren
According to the spec, we can backfill VFP registers that were skipped due to alignment constraints. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167159 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30ARM AAPCS-VFP: fix handling of homogeneous aggreate.Manman Ren
If HA can only partially fit into VFP registers, we add padding to make sure HA will be on stack and later VFP CPRCs will be on stack as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167058 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-26This patch addresses a 64-bit PowerPC ELF ABI compatibility issue withBill Schmidt
varargs parameter passing. A strict reading of the ABI indicates that any argument with alignment greater than 8 may require skipping doublewords in the parameter save area to align the argument, and hence require skipping GPRs. In practice, this is not done by GCC. The alignment restriction is used for internal alignment of a structure, but a structure with 16-byte alignment, for example, is not itself 16-byte aligned in the parameter save area. Although this is messy, it has become the de facto standard used in building existing libraries. My initial varargs support followed the ABI language, but not the de facto standard. Running the GCC compatibility test suite exposed this issue, and indeed showed that LLVM didn't pass parameters self-consistently with my original logic. Removing the additional alignment logic allows the affected tests to now pass. I modified the ppc64-varargs-struct.c test case to remove the existing test for generation of alignment code, which is no longer appropriate. Built and tested on powerpc64-unknown-linux-gnu with no new regressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166805 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-25Modify the targets to set appropriate calling convention defaults and C ↵David Tweed
variables when using a gnueabihf or aapcs-vfp target. Tested by me and Wei-Ren Chen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166679 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24Add padding inreg registers to cause llvm to skip ecx when needed withRafael Espindola
the x86_fastcallcc calling convention. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166538 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24Add inreg markers with the x86_fastcallcc calling convention.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166537 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23Don't try to use inreg with 0 sized structs. Thanks to Eli for reporting theRafael Espindola
regression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166461 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-20Move private classes into anonymous namespaces.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166377 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19Fix handling of the regparm attribute in the presence of classes with copyRafael Espindola
constructors. When I first moved regparm support to TargetInfo.cpp I tried to isolate it in classifyArgumentTypeWithReg, but it is actually a lot easier to flip the code around and check for regparm at the end of the decision tree. Without this refactoring classifyArgumentTypeWithReg would have to duplicate the logic about when to use non-byval indirect arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166266 91177308-0d34-0410-b5e6-96231b3b80d8
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