jroelofs created this revision. jroelofs added reviewers: jyknight, echristo. Herald added a project: clang. Herald added a subscriber: cfe-commits.
See also discussion following: http://lists.llvm.org/pipermail/llvm-dev/2012-May/050098.html Repository: rG LLVM Github Monorepo https://reviews.llvm.org/D80436 Files: clang/docs/CommandGuide/clang.rst Index: clang/docs/CommandGuide/clang.rst =================================================================== --- clang/docs/CommandGuide/clang.rst +++ clang/docs/CommandGuide/clang.rst @@ -246,7 +246,9 @@ .. option:: -ffreestanding Indicate that the file should be compiled for a freestanding, not a hosted, - environment. + environment. Note that it is assumed that a freestanding environment will + additionally provide `memcpy`, `memmove`, `memset` and `memcmp` + implementations, as these are needed for efficient codegen for many programs. .. option:: -fno-builtin
Index: clang/docs/CommandGuide/clang.rst =================================================================== --- clang/docs/CommandGuide/clang.rst +++ clang/docs/CommandGuide/clang.rst @@ -246,7 +246,9 @@ .. option:: -ffreestanding Indicate that the file should be compiled for a freestanding, not a hosted, - environment. + environment. Note that it is assumed that a freestanding environment will + additionally provide `memcpy`, `memmove`, `memset` and `memcmp` + implementations, as these are needed for efficient codegen for many programs. .. option:: -fno-builtin
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