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* Introduce new linkage types linkonce_odr, weak_odr, common_odrDuncan Sands2009-03-071-2/+4
| | | | | | | | | | | | | | | | | | | | | | and extern_weak_odr. These are the same as the non-odr versions, except that they indicate that the global will only be overridden by an *equivalent* global. In C, a function with weak linkage can be overridden by a function which behaves completely differently. This means that IP passes have to skip weak functions, since any deductions made from the function definition might be wrong, since the definition could be replaced by something completely different at link time. This is not allowed in C++, thanks to the ODR (One-Definition-Rule): if a function is replaced by another at link-time, then the new function must be the same as the original function. If a language knows that a function or other global can only be overridden by an equivalent global, it can give it the weak_odr linkage type, and the optimizers will understand that it is alright to make deductions based on the function body. The code generators on the other hand map weak and weak_odr linkage to the same thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66339 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support to the JIT for true non-lazy operation. When a call to a functionNate Begeman2009-02-181-0/+4
| | | | | | | | | | | | | | | | | | | | | that has not been JIT'd yet, the callee is put on a list of pending functions to JIT. The call is directed through a stub, which is updated with the address of the function after it has been JIT'd. A new interface for allocating and updating empty stubs is provided. Add support for removing the ModuleProvider the JIT was created with, which would otherwise invalidate the JIT's PassManager, which is initialized with the ModuleProvider's Module. Add support under a new ExecutionEngine flag for emitting the infomration necessary to update Function and GlobalVariable stubs after JITing them, by recording the address of the stub and the name of the GlobalValue. This allows code to be copied from one address space to another, where libraries may live at different virtual addresses, and have the stubs updated with their new correct target addresses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64906 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the private linkage.Rafael Espindola2009-01-151-1/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62279 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename getABITypeSize to getTypePaddedSize, asDuncan Sands2009-01-121-1/+1
| | | | | | | suggested by Chris. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62099 91177308-0d34-0410-b5e6-96231b3b80d8
* elf writer really wants the size of the global, not the size Chris Lattner2009-01-041-3/+3
| | | | | | | of the pointer to the global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61630 91177308-0d34-0410-b5e6-96231b3b80d8
* The llvm::ELFWriter::EmitGlobal() method is calling theBill Wendling2009-01-041-0/+1
| | | | | | | | | | | llvm::PATypeHolder::get() method when LLVM is self-hosted in Release mode. Before the parser changed, there was a definition of llvm::PAHolder::get() in llvmAsmParser.y. This was probably a bug that no-one noticed. Explicitly #include the Type.h file as a temporary fix for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61620 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix MachineCodeEmitter to use uintptr_t instead of intptr_t. This avoids ↵Evan Cheng2008-12-101-4/+4
| | | | | | some overflow issues. Patch by Thomas Jablin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60828 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename startFunctionStub to startGVStub since it's also used for GV non-lazy ↵Evan Cheng2008-11-081-3/+3
| | | | | | ptr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58897 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up several unbeseeming casts from pointer to intptr_t.Dan Gohman2008-09-041-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
* Use raw_ostream throughout the AsmPrinter.Owen Anderson2008-08-211-4/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55092 91177308-0d34-0410-b5e6-96231b3b80d8
* Add CommonLinkage; currently tentative definitionsDale Johannesen2008-05-141-2/+3
| | | | | | | | | | | | are represented as "weak", but there are subtle differences in some cases on Darwin, so we need both. The intent is that "common" will behave identically to "weak" unless somebody changes their target to do something else. No functional change as yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51118 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a bug in the ELF writer that caused it to produce malformedDan Gohman2008-05-051-1/+1
| | | | | | | ELF headers. The ELF writer still isn't generally usable though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50652 91177308-0d34-0410-b5e6-96231b3b80d8
* Correlate stubs with functions in JIT: when emitting a stub, the JIT tells ↵Nicolas Geoffray2008-04-161-2/+3
| | | | | | | | | | the memory manager which function the stub will resolve. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49814 91177308-0d34-0410-b5e6-96231b3b80d8
* Use PassManagerBase instead of FunctionPassManager for functionsDan Gohman2008-03-111-2/+2
| | | | | | | | | that merely add passes. This allows them to be used with either FunctionPassManager or PassManager, or even with a custom new kind of pass manager. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48256 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable exception handling int JITNicolas Geoffray2008-02-131-0/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47079 91177308-0d34-0410-b5e6-96231b3b80d8
* Use getPreferredAlignmentLog or getPreferredAlignmentDuncan Sands2008-01-291-1/+1
| | | | | | | | to get the alignment of global variables, rather than using hand-made versions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46495 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove attribution from file headers, per discussion on llvmdev.Chris Lattner2007-12-291-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
* Add explicit keywords, and fix a minor typo that they uncovered.Dan Gohman2007-12-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45034 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate the remaining uses of getTypeSize. ThisDuncan Sands2007-11-051-1/+1
| | | | | | | | | | | | | | | should only effect x86 when using long double. Now 12/16 bytes are output for long double globals (the exact amount depends on the alignment). This brings globals in line with the rest of LLVM: the space reserved for an object is now always the ABI size. One tricky point is that only 10 bytes should be output for long double if it is a field in a packed struct, which is the reason for the additional argument to EmitGlobalConstant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43688 91177308-0d34-0410-b5e6-96231b3b80d8
* It's not necessary to do rounding for alloca operations when the requestedDan Gohman2007-07-181-0/+547
alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
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