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| author | Albert Gutowski <agutowski@google.com> | 2016-10-14 17:33:05 +0000 |
|---|---|---|
| committer | Albert Gutowski <agutowski@google.com> | 2016-10-14 17:33:05 +0000 |
| commit | 1deab387170a0877485e9aca7461acac79b33be3 (patch) | |
| tree | fd89d89caffae48b6add6cfd403cc7ea4b4dfb42 /clang/include | |
| parent | c39f8b0a3a1dd8bab1ddcfd865eaf092b2a8507f (diff) | |
| download | bcm5719-llvm-1deab387170a0877485e9aca7461acac79b33be3.tar.gz bcm5719-llvm-1deab387170a0877485e9aca7461acac79b33be3.zip | |
Implement __stosb intrinsic as a volatile memset
Summary: We need `__stosb` to be an intrinsic, because SecureZeroMemory function uses it without including intrin.h. Implementing it as a volatile memset is not consistent with MSDN specification, but it gives us target-independent IR while keeping the most important properties of `__stosb`.
Reviewers: rnk, hans, thakis, majnemer
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D25334
llvm-svn: 284253
Diffstat (limited to 'clang/include')
| -rw-r--r-- | clang/include/clang/Basic/BuiltinsX86.def | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/clang/include/clang/Basic/BuiltinsX86.def b/clang/include/clang/Basic/BuiltinsX86.def index 06c590a1718..8e3fa3d74bb 100644 --- a/clang/include/clang/Basic/BuiltinsX86.def +++ b/clang/include/clang/Basic/BuiltinsX86.def @@ -2041,6 +2041,8 @@ TARGET_HEADER_BUILTIN(__emulu, "ULLiUiUi", "nh", "intrin.h", ALL_MS_LANGUAGES, " TARGET_HEADER_BUILTIN(_AddressOfReturnAddress, "v*", "nh", "intrin.h", ALL_MS_LANGUAGES, "") +TARGET_HEADER_BUILTIN(__stosb, "vUc*Ucz", "nh", "intrin.h", ALL_MS_LANGUAGES, "") + #undef BUILTIN #undef TARGET_BUILTIN #undef TARGET_HEADER_BUILTIN |
