1; RUN: opt < %s -analyze -block-freq | FileCheck %s 2; RUN: opt < %s -passes='print<block-freq>' -disable-output 2>&1 | FileCheck %s 3 4; PR21622: Check for a crasher when the sum of exits to the same successor of a 5; loop overflows. 6 7; CHECK-LABEL: Printing analysis {{.*}} for function 'extremely_likely_loop_successor': 8; CHECK-NEXT: block-frequency-info: extremely_likely_loop_successor 9define void @extremely_likely_loop_successor() { 10; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] 11entry: 12 br label %loop 13 14; CHECK-NEXT: loop: float = 1.0, 15loop: 16 %exit.1.cond = call i1 @foo() 17 br i1 %exit.1.cond, label %exit, label %loop.2, !prof !0 18 19; CHECK-NEXT: loop.2: float = 0.0000000 20loop.2: 21 %exit.2.cond = call i1 @foo() 22 br i1 %exit.2.cond, label %exit, label %loop.3, !prof !0 23 24; CHECK-NEXT: loop.3: float = 0.0000000 25loop.3: 26 %exit.3.cond = call i1 @foo() 27 br i1 %exit.3.cond, label %exit, label %loop.4, !prof !0 28 29; CHECK-NEXT: loop.4: float = 0.0, 30loop.4: 31 %exit.4.cond = call i1 @foo() 32 br i1 %exit.4.cond, label %exit, label %loop, !prof !0 33 34; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] 35exit: 36 ret void 37} 38 39declare i1 @foo() 40 41!0 = !{!"branch_weights", i32 4294967295, i32 1} 42