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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/Utils/SimplifyCFG.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/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | gnu/llvm/lib/Transforms/Utils/SimplifyCFG.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gnu/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/gnu/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index 6e30919246c..7b0bddbbb83 100644 --- a/gnu/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/gnu/llvm/lib/Transforms/Utils/SimplifyCFG.cpp @@ -1436,6 +1436,14 @@ static bool canSinkInstructions( if (isa<PHINode>(I) || I->isEHPad() || isa<AllocaInst>(I) || I->getType()->isTokenTy()) return false; + + // Conservatively return false if I is an inline-asm instruction. Sinking + // and merging inline-asm instructions can potentially create arguments + // that cannot satisfy the inline-asm constraints. + if (const auto *C = dyn_cast<CallInst>(I)) + if (C->isInlineAsm()) + return false; + // Everything must have only one use too, apart from stores which // have no uses. if (!isa<StoreInst>(I) && !I->hasOneUse()) |