1 ; RUN: opt < %s -analyze -block-freq | FileCheck %s 2 3 ; PR21622: Check for a crasher when the sum of exits to the same successor of a 4 ; loop overflows. 5 6 ; CHECK-LABEL: Printing analysis {{.*}} for function 'extremely_likely_loop_successor': 7 ; CHECK-NEXT: block-frequency-info: extremely_likely_loop_successor 8 define void @extremely_likely_loop_successor() { 9 ; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] 10 entry: 11 br label %loop 12 13 ; CHECK-NEXT: loop: float = 1.0, 14 loop: 15 %exit.1.cond = call i1 @foo() 16 br i1 %exit.1.cond, label %exit, label %loop.2, !prof !0 17 18 ; CHECK-NEXT: loop.2: float = 0.0000000 19 loop.2: 20 %exit.2.cond = call i1 @foo() 21 br i1 %exit.2.cond, label %exit, label %loop.3, !prof !0 22 23 ; CHECK-NEXT: loop.3: float = 0.0000000 24 loop.3: 25 %exit.3.cond = call i1 @foo() 26 br i1 %exit.3.cond, label %exit, label %loop.4, !prof !0 27 28 ; CHECK-NEXT: loop.4: float = 0.0, 29 loop.4: 30 %exit.4.cond = call i1 @foo() 31 br i1 %exit.4.cond, label %exit, label %loop, !prof !0 32 33 ; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] 34 exit: 35 ret void 36 } 37 38 declare i1 @foo() 39 40 !0 = !{!"branch_weights", i32 4294967295, i32 1} 41
