diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp index 3e664b375c393..ef61e2e55e18c 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp @@ -400,6 +400,7 @@ void DwarfExpression::finalizeEntryValue() { // Emit the entry value's DWARF block operand. commitTemporaryBuffer(); + LocationFlags &= ~EntryValue; LocationKind = SavedLocationKind; IsEmittingEntryValue = false; } diff --git a/llvm/test/DebugInfo/MIR/X86/piece-entryval.mir b/llvm/test/DebugInfo/MIR/X86/piece-entryval.mir new file mode 100644 index 0000000000000..0f63faa37e9f9 --- /dev/null +++ b/llvm/test/DebugInfo/MIR/X86/piece-entryval.mir @@ -0,0 +1,54 @@ +# RUN: llc -filetype=obj -start-after=livedebugvalues -verify-machineinstrs -march=x86-64 -o - %s | llvm-dwarfdump - | FileCheck %s +# CHECK: DW_OP_entry_value(DW_OP_reg5 RDI), DW_OP_stack_value, DW_OP_piece 0x2, DW_OP_breg5 RDI+0, DW_OP_constu 0xffffffff, DW_OP_and, DW_OP_lit16, DW_OP_shr, DW_OP_piece 0x2 +--- | + ; ModuleID = '/tmp/e.c' + source_filename = "/tmp/e.c" + target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" + target triple = "x86_64-apple-macosx11.0.0" + + ; Function Attrs: norecurse nounwind readnone ssp uwtable willreturn + define dso_local void @f(i32 %i) local_unnamed_addr #0 !dbg !8 { + entry: + call void @llvm.dbg.value(metadata i32 %i, metadata !14, metadata !DIExpression(DW_OP_plus_uconst, 0)), !dbg !15 + ret void, !dbg !16 + } + + ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn + declare void @llvm.dbg.value(metadata, metadata, metadata) #1 + + attributes #0 = { norecurse nounwind readnone ssp uwtable willreturn } + attributes #1 = { nofree nosync nounwind readnone speculatable willreturn } + + !llvm.dbg.cu = !{!0} + !llvm.module.flags = !{!3, !4, !5, !6} + + !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug) + !1 = !DIFile(filename: "/tmp/e.c", directory: "/") + !2 = !{} + !3 = !{i32 7, !"Dwarf Version", i32 4} + !4 = !{i32 2, !"Debug Info Version", i32 3} + !5 = !{i32 1, !"wchar_size", i32 4} + !6 = !{i32 7, !"PIC Level", i32 2} + !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) + !9 = !DIFile(filename: "/tmp/e.c", directory: "") + !10 = !DISubroutineType(types: !11) + !11 = !{null, !12} + !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) + !13 = !{!14} + !14 = !DILocalVariable(name: "i", arg: 1, scope: !8, file: !9, line: 1, type: !12) + !15 = !DILocation(line: 0, scope: !8) + !16 = !DILocation(line: 1, column: 16, scope: !8) + +... +--- +name: f +body: | + bb.0.entry: + DBG_VALUE $edi, $noreg, !14, !DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_LLVM_fragment, 0, 16), debug-location !15 + DBG_VALUE $edi, $noreg, !14, !DIExpression(DW_OP_constu, 16, DW_OP_shr, DW_OP_LLVM_fragment, 16, 16), debug-location !15 + frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp + $rbp = frame-setup MOV64rr $rsp + $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16 + RETQ debug-location !16 + +...