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ParseIR: don't take ownership of the MemoryBuffer

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clang was needlessly duplicating whole memory buffer contents in an attempt to
satisfy unclear ownership semantics. Let's just hide internal LLVM quirks and
present a simple non-owning interface.

The public C API preserves previous behaviour for stability.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211861 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alp Toker
2014-06-27 04:33:58 +00:00
parent 493512898f
commit d0996e5b33
3 changed files with 14 additions and 12 deletions
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6
include/llvm/IRReader/IRReader.h
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@@ -40,9 +40,9 @@ Module *getLazyIRFileModule(const std::string &Filename, SMDiagnostic &Err,
/// If the given MemoryBuffer holds a bitcode image, return a Module
/// for it. Otherwise, attempt to parse it as LLVM Assembly and return
/// a Module for it. This function *always* takes ownership of the given
/// MemoryBuffer.
Module *ParseIR(MemoryBuffer *Buffer, SMDiagnostic &Err, LLVMContext &Context);
/// a Module for it. This function *never* takes ownership of Buffer.
Module *ParseIR(const MemoryBuffer *Buffer, SMDiagnostic &Err,
LLVMContext &Context);
/// If the given file holds a bitcode image, return a Module for it.
/// Otherwise, attempt to parse it as LLVM Assembly and return a Module