xref: /llvm-project/llvm/test/CodeGen/X86/selectiondag-order.ll (revision 5ee088134fb87f7d716c58fa65beb11fb6afcb22) 
1; Check that debug intrinsics do not affect code generation.
2
3; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck --check-prefix=X86-CHECK %s
4; RUN: llc --try-experimental-debuginfo-iterators < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck --check-prefix=X86-CHECK %s
5
6define i64 @simulate(<2 x i32> %a) {
7entry:
8  %rand = tail call i64 @lrand48()
9  br label %body
10
11body:                                        ; preds = %body, %entry
12  %0 = phi <2 x i32> [ %add, %body ], [ zeroinitializer, %entry ]
13  %add = add <2 x i32> %0, %a
14  %rand1 = tail call i64 @lrand48() #3
15  %cmp = icmp eq i64 %rand1, 0
16  br i1 %cmp, label %end, label %body
17
18end:                                        ; preds = %body
19  %c = bitcast <2 x i32> %add to i64
20  %res = add i64 %rand, %c
21  ret i64 %res
22}
23
24; X86-CHECK: simulate:
25; X86-CHECK: movdqa  %xmm0, 16(%rsp)
26; X86-CHECK: pxor  %xmm0, %xmm0
27; X86-CHECK: movdqa  %xmm0, (%rsp)
28; X86-CHECK: callq  lrand48
29; X86-CHECK: movq  %rax, %rbx
30
31define i64 @simulateWithDebugIntrinsic(<2 x i32> %a) local_unnamed_addr  {
32entry:
33  %rand = tail call i64 @lrand48() #3
34  tail call void @llvm.dbg.value(metadata i64 %rand, i64 0, metadata !6, metadata !7), !dbg !8
35  br label %body
36
37body:                                        ; preds = %body, %entry
38  %0 = phi <2 x i32> [ %add, %body ], [ zeroinitializer, %entry ]
39  %add = add <2 x i32> %0, %a
40  %rand1 = tail call i64 @lrand48() #3
41  %cmp = icmp eq i64 %rand1, 0
42  br i1 %cmp, label %end, label %body
43
44end:                                        ; preds = %body
45  %c = bitcast <2 x i32> %add to i64
46  %res = add i64 %rand, %c
47  ret i64 %res
48}
49
50; X86-CHECK: simulateWithDebugIntrinsic:
51; X86-CHECK: movdqa  %xmm0, 16(%rsp)
52; X86-CHECK: pxor  %xmm0, %xmm0
53; X86-CHECK: movdqa  %xmm0, (%rsp)
54; X86-CHECK: callq  lrand48
55; X86-CHECK: movq  %rax, %rbx
56
57define i64 @simulateWithDbgDeclare(<2 x i32> %a) local_unnamed_addr  {
58entry:
59  %rand = tail call i64 @lrand48() #3
60  tail call void @llvm.dbg.declare(metadata i64 %rand, metadata !6, metadata !7), !dbg !8
61  br label %body
62
63body:                                        ; preds = %body, %entry
64  %0 = phi <2 x i32> [ %add, %body ], [ zeroinitializer, %entry ]
65  %add = add <2 x i32> %0, %a
66  %rand1 = tail call i64 @lrand48() #3
67  %cmp = icmp eq i64 %rand1, 0
68  br i1 %cmp, label %end, label %body
69
70end:                                        ; preds = %body
71  %c = bitcast <2 x i32> %add to i64
72  %res = add i64 %rand, %c
73  ret i64 %res
74}
75
76; X86-CHECK: simulateWithDbgDeclare:
77; X86-CHECK: movdqa  %xmm0, 16(%rsp)
78; X86-CHECK: pxor  %xmm0, %xmm0
79; X86-CHECK: movdqa  %xmm0, (%rsp)
80; X86-CHECK: callq  lrand48
81; X86-CHECK: movq  %rax, %rbx
82
83declare i64 @lrand48()
84
85declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
86declare void @llvm.dbg.declare(metadata, metadata, metadata)
87
88!llvm.dbg.cu = !{!1}
89!llvm.module.flags = !{!3, !4}
90
91!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, runtimeVersion: 0, emissionKind: FullDebug)
92!2 = !DIFile(filename: "test.ll", directory: ".")
93!3 = !{i32 2, !"Dwarf Version", i32 4}
94!4 = !{i32 2, !"Debug Info Version", i32 3}
95!5 = distinct !DISubprogram(name: "simulateWithDebugIntrinsic", scope: !2, file: !2, line: 64, isLocal: false, isDefinition: true, scopeLine: 65, unit: !1)
96!6 = !DILocalVariable(name: "randv", scope: !5, file: !2, line: 69)
97!7 = !DIExpression()
98!8 = !DILocation(line: 132, column: 2, scope: !5)
99