xref: /llvm-project/llvm/test/CodeGen/AMDGPU/llvm.dbg.value.ll (revision 6548b6354d1d990e1c98736f5e7c3de876bedc8e) 
1; RUN: llc -O0 -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,NOOPT %s
2; RUN: llc -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,OPT %s
3
4; RUN: llc -O0 -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s --try-experimental-debuginfo-iterators | FileCheck -check-prefixes=GCN,NOOPT %s
5; RUN: llc -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s --try-experimental-debuginfo-iterators | FileCheck -check-prefixes=GCN,OPT %s
6
7; GCN-LABEL: {{^}}test_debug_value:
8; NOOPT: .loc	1 1 42 prologue_end     ; /tmp/test_debug_value.cl:1:42
9; NOOPT-NEXT: s_load_dwordx2 s[4:5], s[8:9], 0x0
10; NOOPT-NEXT: .Ltmp
11; NOOPT-NEXT: ;DEBUG_VALUE: test_debug_value:globalptr_arg <- $sgpr4_sgpr5
12
13; GCN: flat_store_dword
14; GCN: s_endpgm
15define amdgpu_kernel void @test_debug_value(ptr addrspace(1) nocapture %globalptr_arg) #0 !dbg !4 {
16entry:
17  tail call void @llvm.dbg.value(metadata ptr addrspace(1) %globalptr_arg, metadata !10, metadata !13), !dbg !14
18  store i32 123, ptr addrspace(1) %globalptr_arg, align 4, !dbg !14
19  ret void, !dbg !14
20}
21
22; Check for infinite loop in some cases with dbg_value in
23; SIOptimizeExecMaskingPreRA (somehow related to undef argument).
24
25; GCN-LABEL: {{^}}only_undef_dbg_value:
26; NOOPT: ;DEBUG_VALUE: test_debug_value:globalptr_arg <- undef
27; NOOPT-NEXT: s_endpgm
28
29; OPT: s_endpgm
30define amdgpu_kernel void @only_undef_dbg_value() #1 {
31bb:
32  call void @llvm.dbg.value(metadata <4 x float> undef, metadata !10, metadata !DIExpression(DW_OP_constu, 1, DW_OP_swap, DW_OP_xderef)) #2, !dbg !14
33  ret void, !dbg !14
34}
35
36declare void @llvm.dbg.value(metadata, metadata, metadata) #1
37
38attributes #0 = { nounwind  }
39attributes #1 = { nounwind readnone }
40
41!llvm.dbg.cu = !{!0}
42!llvm.module.flags = !{!11, !12, !15}
43
44!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 244715) (llvm/trunk 244718)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
45!1 = !DIFile(filename: "/tmp/test_debug_value.cl", directory: "/Users/matt/src/llvm/build_debug")
46!2 = !{}
47!4 = distinct !DISubprogram(name: "test_debug_value", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !9)
48!5 = !DISubroutineType(types: !6)
49!6 = !{null, !7}
50!7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64, align: 32)
51!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
52!9 = !{!10}
53!10 = !DILocalVariable(name: "globalptr_arg", arg: 1, scope: !4, file: !1, line: 1, type: !7)
54!11 = !{i32 2, !"Dwarf Version", i32 4}
55!12 = !{i32 2, !"Debug Info Version", i32 3}
56!13 = !DIExpression()
57!14 = !DILocation(line: 1, column: 42, scope: !4)
58!15 = !{i32 1, !"amdhsa_code_object_version", i32 500}
59