diff options
Diffstat (limited to 'contrib/llvm/lib/Transforms/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | contrib/llvm/lib/Transforms/Utils/SimplifyCFG.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/contrib/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index 6e30919246c7..7b0bddbbb831 100644 --- a/contrib/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/contrib/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()) |