| ; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s |
| |
| ; Test that byval args get correct DWARF debug locations. |
| ; These end up in the callee as Wasm locals, which is atypical. |
| |
| ; From C code: |
| |
| ; typedef union { int x; float y; } u; |
| ; typedef struct { int x; float y; } s; |
| ; int some_func(int x, u some_union, s some_struct, int a[3]) { |
| ; return x + some_union.x + some_struct.x + a[0]; |
| ; } |
| |
| |
| ; ModuleID = 't.c' |
| source_filename = "t.c" |
| target triple = "wasm32-unknown-unknown" |
| |
| %union.u = type { i32 } |
| %struct.s = type { i32, float } |
| |
| ; Function Attrs: noinline nounwind optnone |
| define hidden i32 @some_func(i32 %x, ptr byval(%union.u) align 4 %some_union, ptr byval(%struct.s) align 4 %some_struct, ptr %a) #0 !dbg !7 { |
| entry: |
| %x.addr = alloca i32, align 4 |
| %a.addr = alloca ptr, align 4 |
| store i32 %x, ptr %x.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %x.addr, metadata !23, metadata !DIExpression()), !dbg !24 |
| call void @llvm.dbg.declare(metadata ptr %some_union, metadata !25, metadata !DIExpression()), !dbg !26 |
| call void @llvm.dbg.declare(metadata ptr %some_struct, metadata !27, metadata !DIExpression()), !dbg !28 |
| store ptr %a, ptr %a.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !29, metadata !DIExpression()), !dbg !30 |
| %0 = load i32, ptr %x.addr, align 4, !dbg !31 |
| %1 = load i32, ptr %some_union, align 4, !dbg !32 |
| %add = add nsw i32 %0, %1, !dbg !33 |
| %2 = load i32, ptr %some_struct, align 4, !dbg !34 |
| %add3 = add nsw i32 %add, %2, !dbg !35 |
| %3 = load ptr, ptr %a.addr, align 4, !dbg !36 |
| %4 = load i32, ptr %3, align 4, !dbg !36 |
| %add4 = add nsw i32 %add3, %4, !dbg !37 |
| ret i32 %add4, !dbg !38 |
| } |
| |
| ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { noinline nounwind optnone "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nofree nosync nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (https://github.com/llvm/llvm-project.git eccc734a69c0c012ae3160887b65a535b35ead3e)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "t.c", directory: "C:\\src\\llvm") |
| !2 = !{} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 12.0.0 (https://github.com/llvm/llvm-project.git eccc734a69c0c012ae3160887b65a535b35ead3e)"} |
| !7 = distinct !DISubprogram(name: "some_func", scope: !1, file: !1, line: 11, type: !8, scopeLine: 11, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10, !11, !17, !22} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !DIDerivedType(tag: DW_TAG_typedef, name: "u", file: !1, line: 4, baseType: !12) |
| !12 = distinct !DICompositeType(tag: DW_TAG_union_type, file: !1, line: 1, size: 32, elements: !13) |
| !13 = !{!14, !15} |
| !14 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !12, file: !1, line: 2, baseType: !10, size: 32) |
| !15 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !12, file: !1, line: 3, baseType: !16, size: 32) |
| !16 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) |
| !17 = !DIDerivedType(tag: DW_TAG_typedef, name: "s", file: !1, line: 9, baseType: !18) |
| !18 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !1, line: 6, size: 64, elements: !19) |
| !19 = !{!20, !21} |
| !20 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !18, file: !1, line: 7, baseType: !10, size: 32) |
| !21 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !18, file: !1, line: 8, baseType: !16, size: 32, offset: 32) |
| !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32) |
| !23 = !DILocalVariable(name: "x", arg: 1, scope: !7, file: !1, line: 11, type: !10) |
| !24 = !DILocation(line: 11, column: 19, scope: !7) |
| !25 = !DILocalVariable(name: "some_union", arg: 2, scope: !7, file: !1, line: 11, type: !11) |
| !26 = !DILocation(line: 11, column: 24, scope: !7) |
| !27 = !DILocalVariable(name: "some_struct", arg: 3, scope: !7, file: !1, line: 11, type: !17) |
| !28 = !DILocation(line: 11, column: 38, scope: !7) |
| !29 = !DILocalVariable(name: "a", arg: 4, scope: !7, file: !1, line: 11, type: !22) |
| !30 = !DILocation(line: 11, column: 55, scope: !7) |
| !31 = !DILocation(line: 12, column: 12, scope: !7) |
| !32 = !DILocation(line: 12, column: 27, scope: !7) |
| !33 = !DILocation(line: 12, column: 14, scope: !7) |
| !34 = !DILocation(line: 12, column: 43, scope: !7) |
| !35 = !DILocation(line: 12, column: 29, scope: !7) |
| !36 = !DILocation(line: 12, column: 47, scope: !7) |
| !37 = !DILocation(line: 12, column: 45, scope: !7) |
| !38 = !DILocation(line: 12, column: 5, scope: !7) |
| |
| |
| |
| |
| ; CHECK-LABEL: DW_TAG_formal_parameter |
| ; CHECK-NEXT: DW_AT_location (DW_OP_fbreg +12) |
| ; CHECK-NEXT: DW_AT_name ("x") |
| |
| ; CHECK-LABEL: DW_TAG_formal_parameter |
| ; CHECK-NEXT: DW_AT_location (DW_OP_WASM_location 0x0 0x1) |
| ; CHECK-NEXT: DW_AT_name ("some_union") |
| |
| ; CHECK-LABEL: DW_TAG_formal_parameter |
| ; CHECK-NEXT: DW_AT_location (DW_OP_WASM_location 0x0 0x2) |
| ; CHECK-NEXT: DW_AT_name ("some_struct") |
| |
| ; CHECK-LABEL: DW_TAG_formal_parameter |
| ; CHECK-NEXT: DW_AT_location (DW_OP_fbreg +8) |
| ; CHECK-NEXT: DW_AT_name ("a") |