; RUN: llc -O3 < %s ; This test fails with: ; Assertion failed: (!B && "UpdateTerminators requires analyzable predecessors!"), function updateTerminator, MachineBasicBlock.cpp, line 255. target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" target triple = "x86_64-apple-darwin10.2" %"struct.llvm::InlineAsm::ConstraintInfo" = type { i32, i8, i8, i8, i8, %"struct.std::vector, std::allocator >,std::allocator, std::allocator > > >" } %"struct.std::_Vector_base >" = type { %"struct.std::_Vector_base >::_Vector_impl" } %"struct.std::_Vector_base >::_Vector_impl" = type { %"struct.llvm::InlineAsm::ConstraintInfo"*, %"struct.llvm::InlineAsm::ConstraintInfo"*, %"struct.llvm::InlineAsm::ConstraintInfo"* } %"struct.std::_Vector_base, std::allocator >,std::allocator, std::allocator > > >" = type { %"struct.std::_Vector_base, std::allocator >,std::allocator, std::allocator > > >::_Vector_impl" } %"struct.std::_Vector_base, std::allocator >,std::allocator, std::allocator > > >::_Vector_impl" = type { %"struct.std::string"*, %"struct.std::string"*, %"struct.std::string"* } %"struct.std::basic_string,std::allocator >::_Alloc_hider" = type { i8* } %"struct.std::string" = type { %"struct.std::basic_string,std::allocator >::_Alloc_hider" } %"struct.std::vector >" = type { %"struct.std::_Vector_base >" } %"struct.std::vector, std::allocator >,std::allocator, std::allocator > > >" = type { %"struct.std::_Vector_base, std::allocator >,std::allocator, std::allocator > > >" } define zeroext i8 @_ZN4llvm9InlineAsm14ConstraintInfo5ParseENS_9StringRefERSt6vectorIS1_SaIS1_EE(%"struct.llvm::InlineAsm::ConstraintInfo"* nocapture %this, i64 %Str.0, i64 %Str.1, %"struct.std::vector >"* nocapture %ConstraintsSoFar) nounwind ssp align 2 { entry: br i1 undef, label %bb56, label %bb27.outer bb8: ; preds = %bb27.outer108, %bb13 switch i8 undef, label %bb27.outer [ i8 35, label %bb56 i8 37, label %bb14 i8 38, label %bb10 i8 42, label %bb56 ] bb27.outer: ; preds = %bb8, %entry %I.2.ph = phi i8* [ undef, %entry ], [ %I.2.ph109, %bb8 ] ; [#uses=2] br label %bb27.outer108 bb10: ; preds = %bb8 %toBool = icmp eq i8 0, 0 ; [#uses=1] %or.cond = and i1 undef, %toBool ; [#uses=1] br i1 %or.cond, label %bb13, label %bb56 bb13: ; preds = %bb10 br i1 undef, label %bb27.outer108, label %bb8 bb14: ; preds = %bb8 ret i8 1 bb27.outer108: ; preds = %bb13, %bb27.outer %I.2.ph109 = getelementptr i8, i8* %I.2.ph, i64 undef ; [#uses=1] %scevgep = getelementptr i8, i8* %I.2.ph, i64 undef ; [#uses=0] br label %bb8 bb56: ; preds = %bb10, %bb8, %bb8, %entry ret i8 1 }