| ; RUN: opt -debug-only=branch-prob -passes="require<branch-prob>,jump-threading" -S %s 2>&1 | FileCheck %s | |
| ; RUN: opt -debug-only=branch-prob -passes=jump-threading -S %s 2>&1 | FileCheck %s --check-prefix=CHECK-NOBPI | |
| ; REQUIRES: asserts | |
| ; Make sure that we set edge probabilities for bb2 as we | |
| ; call DuplicateCondBranchOnPHIIntoPred(bb3, {bb2}). | |
| ; | |
| ; CHECK-LABEL: ---- Branch Probability Info : foo | |
| ; CHECK: set edge bb2 -> 0 successor probability to 0x80000000 / 0x80000000 = 100.00% | |
| ; CHECK-NEXT: set edge bb2 -> 1 successor probability to 0x00000000 / 0x80000000 = 0.00% | |
| ; CHECK-NOBPI-NOT: ---- Branch Probability Info : foo | |
| define void @foo(i1 %f0, i1 %f1, i1 %f2) !prof !{!"function_entry_count", i64 0} { | |
| ; CHECK-LABEL: @foo( | |
| bb1: | |
| br i1 %f0, label %bb3, label %bb2 | |
| bb2: | |
| ; CHECK: bb2: | |
| ; CHECK-NEXT: br i1 %f2, label %exit1, label %unreach | |
| br label %bb3 | |
| bb3: | |
| %ph = phi i1 [ %f1, %bb1 ], [ %f2, %bb2 ] | |
| br i1 %ph, label %exit1, label %unreach | |
| exit1: | |
| ret void | |
| unreach: | |
| unreachable | |
| } |