diff options
Diffstat (limited to 'lib/Transforms/Utils/GlobalStatus.cpp')
| -rw-r--r-- | lib/Transforms/Utils/GlobalStatus.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/Transforms/Utils/GlobalStatus.cpp b/lib/Transforms/Utils/GlobalStatus.cpp index 12057e4..52e2d59 100644 --- a/lib/Transforms/Utils/GlobalStatus.cpp +++ b/lib/Transforms/Utils/GlobalStatus.cpp @@ -35,6 +35,9 @@ bool llvm::isSafeToDestroyConstant(const Constant *C) { if (isa<GlobalValue>(C)) return false; + if (isa<ConstantInt>(C) || isa<ConstantFP>(C)) + return false; + for (const User *U : C->users()) if (const Constant *CU = dyn_cast<Constant>(U)) { if (!isSafeToDestroyConstant(CU)) @@ -45,7 +48,7 @@ bool llvm::isSafeToDestroyConstant(const Constant *C) { } static bool analyzeGlobalAux(const Value *V, GlobalStatus &GS, - SmallPtrSet<const PHINode *, 16> &PhiUsers) { + SmallPtrSetImpl<const PHINode *> &PhiUsers) { for (const Use &U : V->uses()) { const User *UR = U.getUser(); if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(UR)) { @@ -130,7 +133,7 @@ static bool analyzeGlobalAux(const Value *V, GlobalStatus &GS, } else if (const PHINode *PN = dyn_cast<PHINode>(I)) { // PHI nodes we can check just like select or GEP instructions, but we // have to be careful about infinite recursion. - if (PhiUsers.insert(PN)) // Not already visited. + if (PhiUsers.insert(PN).second) // Not already visited. if (analyzeGlobalAux(I, GS, PhiUsers)) return true; } else if (isa<CmpInst>(I)) { |