1 ; RUN: llc -O0 -march=amdgcn -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,NOOPT %s 2 ; RUN: llc -march=amdgcn -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,OPT %s 3 4 ; GCN-LABEL: {{^}}test_debug_value: 5 ; NOOPT: .loc 1 1 42 prologue_end ; /tmp/test_debug_value.cl:1:42 6 ; NOOPT-NEXT: s_load_dwordx2 s[4:5], s[4:5], 0x0 7 ; NOOPT-NEXT: ;DEBUG_VALUE: test_debug_value:globalptr_arg <- $sgpr4_sgpr5 8 9 ; GCN: flat_store_dword 10 ; GCN: s_endpgm 11 define amdgpu_kernel void @test_debug_value(i32 addrspace(1)* nocapture %globalptr_arg) #0 !dbg !4 { 12 entry: 13 tail call void @llvm.dbg.value(metadata i32 addrspace(1)* %globalptr_arg, metadata !10, metadata !13), !dbg !14 14 store i32 123, i32 addrspace(1)* %globalptr_arg, align 4 15 ret void 16 } 17 18 ; Check for infinite loop in some cases with dbg_value in 19 ; SIOptimizeExecMaskingPreRA (somehow related to undef argument). 20 21 ; GCN-LABEL: {{^}}only_undef_dbg_value: 22 ; NOOPT: ;DEBUG_VALUE: test_debug_value:globalptr_arg <- [DW_OP_constu 1, DW_OP_swap, DW_OP_xderef] undef 23 ; NOOPT-NEXT: s_endpgm 24 25 ; OPT: s_endpgm 26 define amdgpu_kernel void @only_undef_dbg_value() #1 { 27 bb: 28 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 29 ret void 30 } 31 32 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 33 34 attributes #0 = { nounwind } 35 attributes #1 = { nounwind readnone } 36 37 !llvm.dbg.cu = !{!0} 38 !llvm.module.flags = !{!11, !12} 39 40 !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) 41 !1 = !DIFile(filename: "/tmp/test_debug_value.cl", directory: "/Users/matt/src/llvm/build_debug") 42 !2 = !{} 43 !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) 44 !5 = !DISubroutineType(types: !6) 45 !6 = !{null, !7} 46 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64, align: 32) 47 !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 48 !9 = !{!10} 49 !10 = !DILocalVariable(name: "globalptr_arg", arg: 1, scope: !4, file: !1, line: 1, type: !7) 50 !11 = !{i32 2, !"Dwarf Version", i32 4} 51 !12 = !{i32 2, !"Debug Info Version", i32 3} 52 !13 = !DIExpression() 53 !14 = !DILocation(line: 1, column: 42, scope: !4) 54
