diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp index 39641b414cb..b64aa3023bb 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp @@ -411,7 +411,9 @@ void WebAssemblyCFGStackify::placeLoopMarker(MachineBasicBlock &MBB) { // Mark the end of the loop (using arbitrary debug location that branched to // the loop end as its location). InsertPos = getEarliestInsertPos(AfterLoop, BeforeSet, AfterSet); - DebugLoc EndDL = (*AfterLoop->pred_rbegin())->findBranchDebugLoc(); + DebugLoc EndDL = AfterLoop->pred_empty() + ? DebugLoc() + : (*AfterLoop->pred_rbegin())->findBranchDebugLoc(); MachineInstr *End = BuildMI(*AfterLoop, InsertPos, EndDL, TII.get(WebAssembly::END_LOOP)); registerScope(Begin, End); |
