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| author |   patrick <patrick@openbsd.org> | 2017-03-14 08:07:52 +0000 |
|---|---|---|
| committer | patrick <patrick@openbsd.org> | 2017-03-14 08:07:52 +0000 |
| commit | 1cb66ada17adf0954eaadba4d02ec2470365a3ac (patch) | |
| tree | 521159d8f39562a43fffd680147eb5a71709b9b1 /gnu/llvm/lib/Transforms/Scalar/SCCP.cpp | |
| parent | Mark the sshd_config UsePrivilegeSeparation option as deprecated, (diff) | |
| download | wireguard-openbsd-1cb66ada17adf0954eaadba4d02ec2470365a3ac.tar.xz wireguard-openbsd-1cb66ada17adf0954eaadba4d02ec2470365a3ac.zip | |
Import LLVM 4.0.0 release including clang and lld.
Diffstat (limited to 'gnu/llvm/lib/Transforms/Scalar/SCCP.cpp')
| -rw-r--r-- | gnu/llvm/lib/Transforms/Scalar/SCCP.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gnu/llvm/lib/Transforms/Scalar/SCCP.cpp b/gnu/llvm/lib/Transforms/Scalar/SCCP.cpp index 34be9069248..ede381c4c24 100644 --- a/gnu/llvm/lib/Transforms/Scalar/SCCP.cpp +++ b/gnu/llvm/lib/Transforms/Scalar/SCCP.cpp @@ -1705,7 +1705,10 @@ static bool runIPSCCP(Module &M, const DataLayout &DL, // If this is an exact definition of this function, then we can propagate // information about its result into callsites of it. - if (F.hasExactDefinition()) + // Don't touch naked functions. They may contain asm returning a + // value we don't see, so we may end up interprocedurally propagating + // the return value incorrectly. + if (F.hasExactDefinition() && !F.hasFnAttribute(Attribute::Naked)) Solver.AddTrackedFunction(&F); // If this function only has direct calls that we can see, we can track its |