| ; RUN: opt -debug-only=branch-prob -jump-threading -S %s 2>&1 | FileCheck %s |
| ; REQUIRES: asserts |
| |
| ; Make sure that we set the branch probability for the newly created |
| ; basic block. |
| |
| define void @foo(i1 %cond1, i1 %cond2) !prof !0 !PGOFuncName !1 { |
| entry: |
| br i1 %cond1, label %bb.f1, label %bb.f2, !prof !2 |
| |
| bb.f1: |
| call void @f1() |
| br label %bb.cond2 |
| |
| bb.f2: |
| call void @f2() |
| br label %bb.cond2 |
| |
| bb.cond2: |
| br i1 %cond2, label %exit, label %bb.cond1again, !prof !3 |
| ; CHECK: set edge bb.cond2.thread -> 0 successor probability to 0x79b9d244 / 0x80000000 |
| ; CHECK: set edge bb.cond2.thread -> 1 successor probability to 0x06462dbc / 0x80000000 = 4.90 |
| |
| bb.cond1again: |
| br i1 %cond1, label %bb.f3, label %bb.f4, !prof !4 |
| |
| bb.f3: |
| call void @f3() |
| br label %exit |
| |
| bb.f4: |
| call void @f4() |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| declare void @f1() |
| |
| declare void @f2() |
| |
| declare void @f3() |
| |
| declare void @f4() |
| |
| !0 = !{!"function_entry_count", i64 15985} |
| !1 = !{!"foo.cpp:foo"} |
| !2 = !{!"branch_weights", i32 0, i32 36865} |
| !3 = !{!"branch_weights", i32 35058, i32 1807} |
| !4 = !{!"branch_weights", i32 1807, i32 35058} |
