forked from OSchip/llvm-project
Mark BumpPtrAllocator::Allocate as returning a noalias pointer.
The GCC attribute is curiously named 'malloc', but I think it's better to use LLVM terminology for the wrapper macro. llvm-svn: 234121
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@ -203,7 +203,8 @@ public:
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}
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/// \brief Allocate space at the specified alignment.
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LLVM_ATTRIBUTE_RETURNS_NONNULL void *Allocate(size_t Size, size_t Alignment) {
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LLVM_ATTRIBUTE_RETURNS_NONNULL LLVM_ATTRIBUTE_RETURNS_NOALIAS void *
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Allocate(size_t Size, size_t Alignment) {
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assert(Alignment > 0 && "0-byte alignnment is not allowed. Use 1 instead.");
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// Keep track of how many bytes we've allocated.
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@ -223,6 +223,16 @@
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#define LLVM_ATTRIBUTE_RETURNS_NONNULL
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#endif
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/// \macro LLVM_ATTRIBUTE_RETURNS_NOALIAS Used to mark a function as returning a
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/// pointer that does not alias any other valid pointer.
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#ifdef __GNUC__
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#define LLVM_ATTRIBUTE_RETURNS_NOALIAS __attribute__((__malloc__))
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#elif defined(_MSC_VER)
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#define LLVM_ATTRIBUTE_RETURNS_NOALIAS __declspec(restrict)
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#else
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#define LLVM_ATTRIBUTE_RETURNS_NOALIAS
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#endif
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/// LLVM_EXTENSION - Support compilers where we have a keyword to suppress
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/// pedantic diagnostics.
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#ifdef __GNUC__
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