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1# RUN: llc %s -mtriple=x86_64 -run-pass=livedebugvalues -experimental-debug-variable-locations -o - 2>&1 | FileCheck %s2#3# Test that we can spill and restore through subregisters too. In this test,4# eax is def'd and then spilt, but as part of a larger register.5--- |6 define i8 @test(i32 %bar) local_unnamed_addr !dbg !7 {7 entry:8 ret i8 0, !dbg !129 }10 11 declare dso_local void @ext(i64)12 13 !llvm.dbg.cu = !{!0}14 !llvm.module.flags = !{!3, !4, !5, !6}15 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)16 !1 = !DIFile(filename: "foo.cpp", directory: ".")17 !2 = !DIBasicType(name: "int", size: 8, encoding: DW_ATE_signed)18 !3 = !{i32 2, !"Dwarf Version", i32 4}19 !4 = !{i32 2, !"Debug Info Version", i32 3}20 !5 = !{i32 1, !"wchar_size", i32 2}21 !6 = !{i32 7, !"PIC Level", i32 2}22 !7 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !1, file: !1, line: 6, type: !8, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)23 !8 = !DISubroutineType(types: !9)24 !9 = !{!2, !2}25 !10 = !{!11}26 !11 = !DILocalVariable(name: "baz", scope: !7, file: !1, line: 7, type: !2)27 !12 = !DILocation(line: 10, scope: !7)28...29---30name: test31tracksRegLiveness: true32debugInstrRef: true33liveins:34 - { reg: '$rdi', virtual-reg: '' }35stack:36 - { id: 0, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,37 stack-id: default, callee-saved-register: '', callee-saved-restored: true,38 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }39body: |40 bb.0:41 liveins: $rdi, $rax, $rbx42 $eax = MOV32ri 0, debug-instr-number 143 $edi = COPY $eax44 MOV64mr $rsp, 1, $noreg, 16, $noreg, $rdi :: (store 8 into %stack.0)45 $rsi = MOV64rm $rsp, 1, $noreg, 8, $noreg :: (load 8 from %stack.0)46 47 ; Store a random value onto stack, forces value to be in one place only.48 ; Clobber other registers that contain the value we're to track.49 MOV64mr $rsp, 1, $noreg, 16, $noreg, $rbx :: (store 8 into %stack.0)50 $rax = MOV64ri 051 $rdi = MOV64ri 052 53 DBG_INSTR_REF !11, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !1254 ; CHECK: DBG_INSTR_REF55 ; CHECK-NEXT: DBG_VALUE_LIST {{.+}}, $esi56 RET64 $rsi, debug-location !1257...58