| ; RUN: opt < %s -analyze -block-freq -enable-new-pm=0 | FileCheck %s |
| ; RUN: opt < %s -passes='print<block-freq>' -disable-output 2>&1 | FileCheck %s |
| |
| ; PR21622: Check for a crasher when the sum of exits to the same successor of a |
| ; loop overflows. |
| |
| ; CHECK-LABEL: Printing analysis {{.*}} for function 'extremely_likely_loop_successor': |
| ; CHECK-NEXT: block-frequency-info: extremely_likely_loop_successor |
| define void @extremely_likely_loop_successor() { |
| ; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] |
| entry: |
| br label %loop |
| |
| ; CHECK-NEXT: loop: float = 1.0, |
| loop: |
| %exit.1.cond = call i1 @foo() |
| br i1 %exit.1.cond, label %exit, label %loop.2, !prof !0 |
| |
| ; CHECK-NEXT: loop.2: float = 0.0000000 |
| loop.2: |
| %exit.2.cond = call i1 @foo() |
| br i1 %exit.2.cond, label %exit, label %loop.3, !prof !0 |
| |
| ; CHECK-NEXT: loop.3: float = 0.0000000 |
| loop.3: |
| %exit.3.cond = call i1 @foo() |
| br i1 %exit.3.cond, label %exit, label %loop.4, !prof !0 |
| |
| ; CHECK-NEXT: loop.4: float = 0.0, |
| loop.4: |
| %exit.4.cond = call i1 @foo() |
| br i1 %exit.4.cond, label %exit, label %loop, !prof !0 |
| |
| ; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] |
| exit: |
| ret void |
| } |
| |
| declare i1 @foo() |
| |
| !0 = !{!"branch_weights", i32 4294967295, i32 1} |