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[IRTranslator] Implement translation of entry_value dbg.value intrinsics
For dbg.value intrinsics targeting an llvm::Argument address whose expression starts with an entry value, we lower this to a DEBUG_VALUE targeting the livein physical register corresponding to that Argument. Depends on D151328 Differential Revision: https://reviews.llvm.org/D151329
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Original file line number | Diff line number | Diff line change |
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; RUN: llc -O0 -global-isel -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s | ||
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; CHECK-NOT: DBG_VALUE | ||
; CHECK: DBG_VALUE $x22, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1) | ||
; CHECK-NEXT: DBG_VALUE $x22, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1) | ||
; CHECK-NOT: DBG_VALUE | ||
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target triple="aarch64--" | ||
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define void @foo(ptr %unused_arg, ptr swiftasync %async_arg) !dbg !6 { | ||
call void @llvm.dbg.value(metadata ptr %async_arg, metadata !12, metadata !DIExpression(DW_OP_LLVM_entry_value, 1)), !dbg !14 | ||
call void @llvm.dbg.value(metadata ptr %async_arg, metadata !12, metadata !DIExpression(DW_OP_LLVM_entry_value, 1)), !dbg !14 | ||
call void @consume(ptr %async_arg) | ||
ret void, !dbg !15 | ||
} | ||
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declare void @llvm.dbg.value(metadata, metadata, metadata) | ||
declare void @consume(ptr %ptr) | ||
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!llvm.dbg.cu = !{!0} | ||
!llvm.module.flags = !{!3, !4} | ||
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug) | ||
!1 = !DIFile(filename: "x.c", directory: "/") | ||
!3 = !{i32 2, !"Dwarf Version", i32 4} | ||
!4 = !{i32 2, !"Debug Info Version", i32 3} | ||
!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, unit: !0) | ||
!7 = !DISubroutineType(types: !8) | ||
!8 = !{null, !9, !9, !9} | ||
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64) | ||
!10 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !11) | ||
!11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) | ||
!12 = !DILocalVariable(name: "a", scope: !6, file: !1, line: 1, type: !9) | ||
!14 = !DILocation(line: 1, column: 29, scope: !6) | ||
!15 = !DILocation(line: 1, column: 37, scope: !6) |