xref: /llvm-project/llvm/test/Transforms/JumpThreading/thread-prob-2.ll (revision a1b78fb929fccf96acaa0212cf68fee82298e747)
1; RUN: opt -debug-only=branch-prob -passes="require<branch-prob>,jump-threading" -S %s 2>&1 | FileCheck %s
2; RUN: opt -debug-only=branch-prob -passes=jump-threading -S %s 2>&1 | FileCheck %s --check-prefix=CHECK-NOBPI
3; REQUIRES: asserts
4
5; Make sure that we clear edge probabilities for bb.cond as we fold
6; the conditional branch in it.
7
8; CHECK: eraseBlock bb.cond
9; CHECK-NOBPI-NOT: eraseBlock bb.cond
10
11define i32 @foo(i1 %cond) !prof !0 {
12; CHECK-LABEL: @foo
13; CHECK: bb.entry:
14; CHECK-NEXT: br i1 %cond, label %bb.31, label %bb.12
15; CHECK-NOT: bb.cond:
16bb.entry:
17  br i1 %cond, label %bb.31, label %bb.cond
18
19bb.cond:
20  br i1 %cond, label %bb.31, label %bb.12
21
22bb.31:
23  ret i32 31
24
25bb.12:
26  ret i32 12
27}
28
29!0 = !{!"function_entry_count", i64 0}
30