diff options
| -rw-r--r-- | lib/Transforms/IPO/GlobalDCE.cpp | 4 | ||||
| -rw-r--r-- | test/Transforms/GlobalDCE/indirectbr.ll | 18 |
2 files changed, 20 insertions, 2 deletions
diff --git a/lib/Transforms/IPO/GlobalDCE.cpp b/lib/Transforms/IPO/GlobalDCE.cpp index 76d1287fb7..201f320c43 100644 --- a/lib/Transforms/IPO/GlobalDCE.cpp +++ b/lib/Transforms/IPO/GlobalDCE.cpp @@ -197,8 +197,8 @@ void GlobalDCE::MarkUsedGlobalsAsNeeded(Constant *C) { // use to the list of needed globals. for (User::op_iterator I = C->op_begin(), E = C->op_end(); I != E; ++I) { // If we've already processed this constant there's no need to do it again. - Constant *Op = cast<Constant>(*I); - if (SeenConstants.insert(Op)) + Constant *Op = dyn_cast<Constant>(*I); + if (Op && SeenConstants.insert(Op)) MarkUsedGlobalsAsNeeded(Op); } } diff --git a/test/Transforms/GlobalDCE/indirectbr.ll b/test/Transforms/GlobalDCE/indirectbr.ll new file mode 100644 index 0000000000..90f1ae44b1 --- /dev/null +++ b/test/Transforms/GlobalDCE/indirectbr.ll @@ -0,0 +1,18 @@ +; RUN: opt -S -globaldce < %s | FileCheck %s + +@L = internal unnamed_addr constant [3 x i8*] [i8* blockaddress(@test1, %L1), i8* blockaddress(@test1, %L2), i8* null], align 16 + +; CHECK: @L = internal unnamed_addr constant + +define void @test1(i32 %idx) { +entry: + br label %L1 + +L1: + %arrayidx = getelementptr inbounds [3 x i8*]* @L, i32 0, i32 %idx + %l = load i8** %arrayidx + indirectbr i8* %l, [label %L1, label %L2] + +L2: + ret void +} |