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| author | James Molloy <james.molloy@arm.com> | 2012-12-20 16:04:27 +0000 |
|---|---|---|
| committer | James Molloy <james.molloy@arm.com> | 2012-12-20 16:04:27 +0000 |
| commit | 67ae13575900e8efd056672987249fd0adbf5e73 (patch) | |
| tree | c297968f698f92b4b2d7b06c6d892a2299061887 /include/llvm/Attributes.h | |
| parent | 6af228a92a7b8414fa3c1b3c37ee659d32e66e1b (diff) | |
| download | llvm-67ae13575900e8efd056672987249fd0adbf5e73.tar.gz llvm-67ae13575900e8efd056672987249fd0adbf5e73.tar.bz2 llvm-67ae13575900e8efd056672987249fd0adbf5e73.tar.xz | |
Add a new attribute, 'noduplicate'. If a function contains a noduplicate call, the call cannot be duplicated - Jump threading, loop unrolling, loop unswitching, and loop rotation are inhibited if they would duplicate the call.
Similarly inlining of the function is inhibited, if that would duplicate the call (in particular inlining is still allowed when there is only one callsite and the function has internal linkage).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170704 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Attributes.h')
| -rw-r--r-- | include/llvm/Attributes.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/llvm/Attributes.h b/include/llvm/Attributes.h index e158d7e8f2..ab4735fe36 100644 --- a/include/llvm/Attributes.h +++ b/include/llvm/Attributes.h @@ -67,6 +67,7 @@ public: Nest, ///< Nested function static chain NoAlias, ///< Considered to not alias after call NoCapture, ///< Function creates no aliases of pointer + NoDuplicate, ///< Call cannot be duplicated NoImplicitFloat, ///< Disable implicit floating point insts NoInline, ///< inline=never NonLazyBind, ///< Function is called early and/or @@ -223,7 +224,8 @@ public: .removeAttribute(Attribute::NonLazyBind) .removeAttribute(Attribute::ReturnsTwice) .removeAttribute(Attribute::AddressSafety) - .removeAttribute(Attribute::MinSize); + .removeAttribute(Attribute::MinSize) + .removeAttribute(Attribute::NoDuplicate); } uint64_t Raw() const { return Bits; } |