2009-06-30 00:48:55 +00:00
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//===-- llvm/LLVMContext.h - Class for managing "global" state --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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2009-06-30 17:06:46 +00:00
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//
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// This file declares LLVMContext, a container of "global" state in LLVM, such
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// as the global type and constant uniquing tables.
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//
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//===----------------------------------------------------------------------===//
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2009-06-30 00:48:55 +00:00
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2013-01-10 00:45:19 +00:00
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#ifndef LLVM_IR_LLVMCONTEXT_H
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#define LLVM_IR_LLVMCONTEXT_H
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2009-06-30 00:48:55 +00:00
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2012-09-17 07:16:40 +00:00
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#include "llvm/Support/Compiler.h"
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2009-06-30 00:48:55 +00:00
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namespace llvm {
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2009-08-11 17:45:13 +00:00
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class LLVMContextImpl;
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2009-12-29 09:01:33 +00:00
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class StringRef;
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2012-01-03 23:47:05 +00:00
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class Twine;
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introduce a new recoverable error handling API to LLVMContext
and use it in one place in inline asm handling stuff. Before
we'd generate this for an invalid modifier letter:
$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl ${0:Z}'
INLINEASM <es:abc incl ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>
Now we generate this:
$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl ${0:Z}'
asm.c:3:12: note: generated from here
__asm__ ("incl %Z0" : "+r" (X));
^
1 error generated.
This is much better but still admittedly not great ("why" is the operand
invalid??), codegen should try harder with its diagnostics :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100723 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 23:40:44 +00:00
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class Instruction;
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2010-09-08 18:03:32 +00:00
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class Module;
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2010-11-17 08:13:01 +00:00
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class SMDiagnostic;
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2009-12-29 09:01:33 +00:00
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template <typename T> class SmallVectorImpl;
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2009-10-06 17:43:57 +00:00
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2009-06-30 17:06:46 +00:00
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/// This is an important class for using LLVM in a threaded context. It
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/// (opaquely) owns and manages the core "global" data of LLVM's core
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/// infrastructure, including the type and constant uniquing tables.
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/// LLVMContext itself provides no locking guarantees, so you should be careful
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/// to have one context per thread.
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2009-08-11 17:45:13 +00:00
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class LLVMContext {
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2010-09-08 18:22:11 +00:00
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public:
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LLVMContextImpl *const pImpl;
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LLVMContext();
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~LLVMContext();
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2010-03-30 23:03:27 +00:00
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// Pinned metadata names, which always have the same value. This is a
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// compile-time performance optimization, not a correctness optimization.
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enum {
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2010-09-14 21:25:10 +00:00
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MD_dbg = 0, // "dbg"
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2011-07-06 18:22:43 +00:00
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MD_tbaa = 1, // "tbaa"
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2011-10-27 19:19:14 +00:00
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MD_prof = 2, // "prof"
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2012-04-14 12:36:06 +00:00
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MD_fpmath = 3, // "fpmath"
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2012-09-13 17:56:17 +00:00
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MD_range = 4, // "range"
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MD_tbaa_struct = 5 // "tbaa.struct"
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2010-03-30 23:03:27 +00:00
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};
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2009-12-29 09:01:33 +00:00
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/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
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/// This ID is uniqued across modules in the current LLVMContext.
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unsigned getMDKindID(StringRef Name) const;
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/// getMDKindNames - Populate client supplied SmallVector with the name for
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2010-07-20 21:45:17 +00:00
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/// custom metadata IDs registered in this LLVMContext.
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2009-12-29 09:01:33 +00:00
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void getMDKindNames(SmallVectorImpl<StringRef> &Result) const;
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2010-04-06 00:44:45 +00:00
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2010-11-17 08:13:01 +00:00
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2013-02-11 05:37:07 +00:00
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typedef void (*InlineAsmDiagHandlerTy)(const SMDiagnostic&, void *Context,
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unsigned LocCookie);
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2010-11-17 08:13:01 +00:00
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2013-02-11 05:37:07 +00:00
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/// setInlineAsmDiagnosticHandler - This method sets a handler that is invoked
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/// when problems with inline asm are detected by the backend. The first
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/// argument is a function pointer and the second is a context pointer that
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/// gets passed into the DiagHandler.
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2010-04-06 00:44:45 +00:00
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///
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2010-11-17 08:13:01 +00:00
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/// LLVMContext doesn't take ownership or interpret either of these
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2010-04-06 00:44:45 +00:00
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/// pointers.
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2013-02-11 05:37:07 +00:00
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void setInlineAsmDiagnosticHandler(InlineAsmDiagHandlerTy DiagHandler,
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void *DiagContext = 0);
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2010-04-06 00:44:45 +00:00
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2013-02-11 05:37:07 +00:00
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/// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
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/// setInlineAsmDiagnosticHandler.
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InlineAsmDiagHandlerTy getInlineAsmDiagnosticHandler() const;
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2010-04-06 00:44:45 +00:00
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2013-02-11 05:37:07 +00:00
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/// getInlineAsmDiagnosticContext - Return the diagnostic context set by
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/// setInlineAsmDiagnosticHandler.
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void *getInlineAsmDiagnosticContext() const;
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2010-04-06 00:44:45 +00:00
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introduce a new recoverable error handling API to LLVMContext
and use it in one place in inline asm handling stuff. Before
we'd generate this for an invalid modifier letter:
$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl ${0:Z}'
INLINEASM <es:abc incl ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>
Now we generate this:
$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl ${0:Z}'
asm.c:3:12: note: generated from here
__asm__ ("incl %Z0" : "+r" (X));
^
1 error generated.
This is much better but still admittedly not great ("why" is the operand
invalid??), codegen should try harder with its diagnostics :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100723 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 23:40:44 +00:00
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/// emitError - Emit an error message to the currently installed error handler
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/// with optional location information. This function returns, so code should
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/// be prepared to drop the erroneous construct on the floor and "not crash".
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/// The generated code need not be correct. The error message will be
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/// implicitly prefixed with "error: " and should not end with a ".".
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2012-01-03 23:47:05 +00:00
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void emitError(unsigned LocCookie, const Twine &ErrorStr);
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void emitError(const Instruction *I, const Twine &ErrorStr);
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void emitError(const Twine &ErrorStr);
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2010-09-08 18:41:07 +00:00
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private:
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2012-09-17 07:16:40 +00:00
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LLVMContext(LLVMContext&) LLVM_DELETED_FUNCTION;
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void operator=(LLVMContext&) LLVM_DELETED_FUNCTION;
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2010-09-08 18:41:07 +00:00
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/// addModule - Register a module as being instantiated in this context. If
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/// the context is deleted, the module will be deleted as well.
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void addModule(Module*);
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/// removeModule - Unregister a module from this context.
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void removeModule(Module*);
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// Module needs access to the add/removeModule methods.
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friend class Module;
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2009-06-30 00:48:55 +00:00
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};
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2009-12-29 09:01:33 +00:00
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/// getGlobalContext - Returns a global context. This is for LLVM clients that
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/// only care about operating on a single thread.
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extern LLVMContext &getGlobalContext();
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2009-06-30 23:39:59 +00:00
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2009-06-30 00:48:55 +00:00
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}
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#endif
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