1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -simplifycfg < %s -S | FileCheck %s 3 4; The dead code would cause a select that had itself 5; as an operand to be analyzed. This would then cause 6; infinite recursion and eventual crash. 7 8define void @PR36045(i1 %t, i32* %b) { 9; CHECK-LABEL: @PR36045( 10; CHECK-NEXT: entry: 11; CHECK-NEXT: [[TMP0:%.*]] = xor i1 [[T:%.*]], true 12; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]]) 13; CHECK-NEXT: ret void 14; 15entry: 16 br i1 %t, label %if, label %end 17 18if: 19 br i1 %t, label %unreach, label %pre 20 21unreach: 22 unreachable 23 24pre: 25 %p = phi i32 [ 70, %if ], [ %sel, %for ] 26 br label %for 27 28for: 29 %cmp = icmp sgt i32 %p, 8 30 %add = add i32 %p, 2 31 %sel = select i1 %cmp, i32 %p, i32 %add 32 %cmp21 = icmp ult i32 %sel, 21 33 br i1 %cmp21, label %pre, label %for.end 34 35for.end: 36 br i1 %t, label %unreach2, label %then12 37 38then12: 39 store i32 0, i32* %b 40 br label %unreach2 41 42unreach2: 43 %spec = phi i32 [ %sel, %for.end ], [ 42, %then12 ] 44 unreachable 45 46end: 47 ret void 48} 49 50