1# RUN: llc -mtriple=x86_64-- -run-pass livedebugvalues -o - %s -experimental-debug-variable-locations=false | FileCheck %s --implicit-check-not=DBG_VALUE_LIST 2# 3# A DBG_VALUE_LIST that has a component spilt and restored should had its 4# expression and operands updated to refer to the stack for that period, and 5# then return to normal once the value is restored. 6# 7# CHECK: ![[VAR:[0-9]+]] = !DILocalVariable(name: "c" 8# 9# CHECK-LABEL: bb.0.entry: 10# CHECK: DBG_VALUE_LIST ![[VAR]], 11# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), 12# CHECK-SAME: $rdi, $rsi, 13# CHECK: MOV64mr $rsp, 1, $noreg, -16, $noreg, $rdi 14# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], 15# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_LLVM_arg, 1, DW_OP_plus), 16# CHECK-SAME: $rsp, $rsi, 17# CHECK: $rdi = MOV64rm $rsp, 1, $noreg, -16, 18# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], 19# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), 20# CHECK-SAME: $rdi, $rsi, 21 22--- | 23 ; ModuleID = 'test.cpp' 24 source_filename = "test.cpp" 25 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 26 target triple = "x86_64-unknown-linux-gnu" 27 28 ; Function Attrs: norecurse nounwind readnone uwtable 29 define dso_local i32 @_Z3fooii(i32 %a, i32 %b) local_unnamed_addr !dbg !7 { 30 entry: 31 ret i32 0, !dbg !17 32 } 33 34 ; Function Attrs: nounwind readnone speculatable willreturn 35 declare void @llvm.dbg.value(metadata, metadata, metadata) 36 37 !llvm.dbg.cu = !{!0} 38 !llvm.module.flags = !{!3, !4, !5} 39 !llvm.ident = !{!6} 40 41 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 42 !1 = !DIFile(filename: "test.cpp", directory: "/") 43 !2 = !{} 44 !3 = !{i32 7, !"Dwarf Version", i32 4} 45 !4 = !{i32 2, !"Debug Info Version", i32 3} 46 !5 = !{i32 1, !"wchar_size", i32 4} 47 !6 = !{!"clang version 11.0.0"} 48 !7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) 49 !8 = !DISubroutineType(types: !9) 50 !9 = !{!10, !10, !10} 51 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 52 !11 = !{!12, !13, !14} 53 !12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10) 54 !13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10) 55 !14 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 3, type: !10) 56 !15 = !DILocation(line: 0, scope: !7) 57 !16 = !DILocation(line: 4, column: 12, scope: !7) 58 !17 = !DILocation(line: 4, column: 3, scope: !7) 59 60... 61--- 62name: _Z3fooii 63stack: 64 - { id: 0, offset: -16, size: 8, alignment: 8, type: spill-slot } 65body: | 66 bb.0.entry: 67 liveins: $rdi, $rsi 68 69 $rsp = frame-setup SUB64ri8 $rsp, 24, implicit-def dead $eflags 70 DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15 71 MOV64mr $rsp, 1, _, -16, _, $rdi, debug-location !15 :: (store (s64) into %stack.0) 72 $rax = COPY killed $rdi 73 $rdi = MOV64ri 0 74 $rdi = MOV64rm $rsp, 1, $noreg, -16, $noreg, debug-location !15 :: (load (s64) from %stack.0) 75 RET64 76... 77 78