xref: /llvm-project/llvm/test/CodeGen/X86/basic-block-sections-cloning-indirect.ll (revision f70e39ec173192058976805a2c51ac438bb2ff2f)
1;; Test for cloning a path ending with indirect branch with -basic-block-sections.
2
3declare void @effect(i32 zeroext)
4
5;; Test valid application of cloning for a path with indirect branch.
6; RUN: echo 'v1' > %t
7; RUN: echo 'f bar' >> %t
8; RUN: echo 'p 0 1' >> %t
9; RUN: echo 'c 0 1.1 2 1' >> %t
10; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t | FileCheck %s
11
12define void @bar(i1 %a, i1 %b) {
13b0:
14  call void @effect(i32 0)
15  br i1 %a, label %b1, label %b2
16b1:                                              ; preds = %b0
17  call void @effect(i32 1)
18  %0 = select i1 %b,                           ; <ptr> [#uses=1]
19              ptr blockaddress(@bar, %b2),
20              ptr blockaddress(@bar, %b3)
21  indirectbr ptr %0, [label %b2, label %b3]
22b2:                                              ; preds = %b0, %b1
23  call void @effect(i32 2)
24  ret void
25b3:
26  call void @effect(i32 3)                       ; preds = %b1
27  ret void
28}
29
30; CHECK:        .section    .text.bar,"ax",@progbits
31; CHECK:      bar:
32; CHECK:      # %bb.0:        # %b0
33; CHECK:        je .LBB0_2
34; CHECK-NEXT: # %bb.4:        # %b1
35; CHECK:        jmpq *%rax
36; CHECK-NEXT: .Ltmp0:         # Block address taken
37; CHECK-NEXT: .LBB0_2:        # %b2
38; CHECK:        retq
39; CHECK-NEXT: # %bb.1:        # %b1
40; CHECK:        jmpq *%rax
41; CHECK:        .section    .text.split.bar,"ax",@progbits
42; CHECK:      bar.cold:       # %b3
43
44