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1# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \2# RUN: -experimental-debug-variable-locations -run-pass=livedebugvalues3#4# Regression test for a rare crash with InstrRefBasedLDV. It would be quite5# wild for a transfer (copy/spill/restore) instruction to write to $rsp, but if6# it did, we hit a stale assertion that made assumptions about the numbering7# order of location numbers. Test that this input (transferring to $rsp via8# a stack restore) doesn't crash.9# 10--- |11 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"12 target triple = "x86_64-unknown-linux-gnu"13 14 define dso_local i32 @foo(i64 %bar, i64 %baz) !dbg !7 {15 entry:16 ret i32 017 }18 19 declare void @llvm.dbg.value(metadata, metadata, metadata)20 21 !llvm.dbg.cu = !{!0}22 !llvm.module.flags = !{!3, !4, !5}23 !llvm.ident = !{!6}24 25 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)26 !1 = !DIFile(filename: "test.c", directory: "/tmp/out.c")27 !2 = !{}28 !3 = !{i32 7, !"Dwarf Version", i32 4}29 !4 = !{i32 2, !"Debug Info Version", i32 3}30 !5 = !{i32 1, !"wchar_size", i32 4}31 !6 = !{!""}32 !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)33 !8 = !DISubroutineType(types: !9)34 !9 = !{!10, !11, !11}35 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)36 !11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)37 !12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)38 !13 = !DILocation(line: 0, scope: !7)39 !14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)40 41...42---43name: foo44alignment: 1645tracksRegLiveness: true46debugInstrRef: true47frameInfo:48 stackSize: 2449 offsetAdjustment: -2450 maxAlignment: 151 adjustsStack: true52 hasCalls: true53 maxCallFrameSize: 054 cvBytesOfCalleeSavedRegisters: 1655stack:56 - { id: 0, type: spill-slot, offset: -64, size: 8, alignment: 8 }57machineFunctionInfo: {}58body: |59 bb.0.entry:60 liveins: $rax, $rbx61 62 DBG_VALUE $rax, $noreg, !12, !DIExpression(), debug-location !1363 MOV64mr $rsp, 1, $noreg, -8, $noreg, renamable $rax :: (store 8 into %stack.0)64 $rsp = MOV64rm $rsp, 1, $noreg, 0, $noreg, debug-location !13 :: (load 8 from %stack.0)65 RET64 implicit $rbx, debug-location !1366 67...68