09b832e74f
This patch enables AsmPrinter support for complex expression with entry values. It shouldn't AsmPrinter's call whether these are safe or not but the pass who introduces the DW_OP_LLVM_entry_value. This patch on its own has no effect on clang. Differential Revision: https://reviews.llvm.org/D96559
54 lines
2.4 KiB
YAML
54 lines
2.4 KiB
YAML
# RUN: llc -filetype=obj -start-after=livedebugvalues -verify-machineinstrs -march=x86-64 -o - %s | llvm-dwarfdump - | FileCheck %s
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# CHECK: DW_AT_location (DW_OP_entry_value(DW_OP_reg5 RDI), DW_OP_constu 0xffffffff, DW_OP_and, DW_OP_lit0, DW_OP_plus)
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--- |
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; ModuleID = '/tmp/e.c'
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source_filename = "/tmp/e.c"
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx11.0.0"
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; Function Attrs: norecurse nounwind readnone ssp uwtable willreturn
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define dso_local void @f(i32 %i) local_unnamed_addr #0 !dbg !8 {
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entry:
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call void @llvm.dbg.value(metadata i32 %i, metadata !14, metadata !DIExpression()), !dbg !15
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ret void, !dbg !16
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}
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; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { norecurse nounwind readnone ssp uwtable willreturn }
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attributes #1 = { nofree nosync nounwind readnone speculatable willreturn }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
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!1 = !DIFile(filename: "/tmp/e.c", directory: "/")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!8 = distinct !DISubprogram(name: "f", scope: !9, file: !9, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
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!9 = !DIFile(filename: "/tmp/e.c", directory: "")
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!10 = !DISubroutineType(types: !11)
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!11 = !{null, !12}
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !{!14}
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!14 = !DILocalVariable(name: "i", arg: 1, scope: !8, file: !9, line: 1, type: !12)
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!15 = !DILocation(line: 0, scope: !8)
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!16 = !DILocation(line: 1, column: 16, scope: !8)
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...
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---
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name: f
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body: |
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bb.0.entry:
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DBG_VALUE $edi, $noreg, !14, !DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_lit0, DW_OP_plus), debug-location !15
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frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
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$rbp = frame-setup MOV64rr $rsp
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$rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16
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RETQ debug-location !16
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...
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