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1# RUN: llc --run-pass=livedebugvalues -o - %s | FileCheck %s --implicit-check-not=DBG_VALUE 2# REQUIRES: x86-registered-target3 4# This test covers the scenario where a DBG_VALUE created prior to LiveDebugValues has an entry-value expression.5# It ensures that a clobbered stack copy doesn't crash if used as an entry-value because entry-values can't be clobbered.6 7--- |8 target triple = "x86_64-"9 10 define i32 @baz(i32 swiftasync %arg1, i32 noundef %arg2, i1 %cond) !dbg !9 {11 tail call void @llvm.dbg.value(metadata i32 %arg1, metadata !17, metadata !DIExpression(DW_OP_LLVM_entry_value, 1)), !dbg !1912 br i1 %cond, label %if.then, label %if.else, !dbg !2213 if.then:14 %call = call i32 @foo(i32 noundef %arg1), !dbg !2315 br label %if.end, !dbg !2516 if.else:17 %call1 = call i32 @foo(i32 noundef %arg2), !dbg !2618 br label %if.end19 if.end:20 %temp.0 = phi i32 [ %call, %if.then ], [ %call1, %if.else ], !dbg !2821 ret i32 %temp.0, !dbg !2922 }23 24 declare i32 @foo(i32)25 declare void @llvm.dbg.value(metadata, metadata, metadata)26 27 !llvm.dbg.cu = !{!0}28 !llvm.module.flags = !{!2, !3}29 30 !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "ha", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)31 !1 = !DIFile(filename: "test.c", directory: "hah")32 !2 = !{i32 7, !"Dwarf Version", i32 4}33 !3 = !{i32 2, !"Debug Info Version", i32 3}34 !9 = distinct !DISubprogram(name: "baz", scope: !1, file: !1, line: 3, type: !10, scopeLine: 3, unit: !0, retainedNodes: !13)35 !10 = !DISubroutineType(types: !11)36 !11 = !{!12, !12, !12, !12}37 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)38 !13 = !{!14, !15, !16, !17}39 !14 = !DILocalVariable(name: "arg1", arg: 1, scope: !9, file: !1, line: 3, type: !12)40 !15 = !DILocalVariable(name: "arg2", arg: 2, scope: !9, file: !1, line: 3, type: !12)41 !16 = !DILocalVariable(name: "cond", arg: 3, scope: !9, file: !1, line: 3, type: !12)42 !17 = !DILocalVariable(name: "local", scope: !9, file: !1, line: 4, type: !12)43 !19 = !DILocation(line: 0, scope: !9)44 !20 = !DILocation(line: 7, column: 7, scope: !21)45 !21 = distinct !DILexicalBlock(scope: !9, file: !1, line: 7, column: 7)46 !22 = !DILocation(line: 7, column: 7, scope: !9)47 !23 = !DILocation(line: 8, column: 12, scope: !24)48 !24 = distinct !DILexicalBlock(scope: !21, file: !1, line: 7, column: 13)49 !25 = !DILocation(line: 9, column: 3, scope: !24)50 !26 = !DILocation(line: 10, column: 12, scope: !27)51 !27 = distinct !DILexicalBlock(scope: !21, file: !1, line: 9, column: 10)52 !28 = !DILocation(line: 0, scope: !21)53 !29 = !DILocation(line: 13, column: 3, scope: !9)54 55...56---57name: baz58alignment: 1659debugInstrRef: true60tracksDebugUserValues: true61liveins:62 - { reg: '$r14', virtual-reg: '' }63 - { reg: '$edi', virtual-reg: '' }64 - { reg: '$esi', virtual-reg: '' }65 - { reg: '$edx', virtual-reg: '' }66body: |67 bb.0:68 successors: %bb.2(0x40000000), %bb.1(0x40000000)69 liveins: $r14, $edi, $edx, $esi70 DBG_VALUE $r14, $noreg, !14, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !1971 CMP32ri killed renamable $edx, 0, implicit-def $eflags, debug-location !2072 JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !2273 bb.1.if.then:74 successors: %bb.3(0x80000000)75 liveins: $edi, $r1376 CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $eax, debug-location !2377 $r14 = MOV64ri 0, debug-location !2078 JMP_1 %bb.3, debug-location !2579 bb.2.if.else:80 successors: %bb.3(0x80000000)81 liveins: $esi, $r1382 $edi = MOV32rr killed $esi, debug-location !2683 CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $eax, debug-location !2684 bb.3.if.end:85 liveins: $eax86 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !2987 RET64 implicit $eax, debug-location !2988# CHECK-LABEL: bb.0:89# CHECK: DBG_VALUE $r14, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1)90# CHECK-LABEL: bb.1.if.then:91# CHECK: DBG_VALUE $r14, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1)92# CHECK-NEXT: CALL64pcrel32 @foo93# CHECK-NEXT: $r14 = MOV64ri 094# CHECK-NOT: DBG_VALUE $r14, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1)95# CHECK-LABEL: bb.2.if.else:96# CHECK: DBG_VALUE $r14, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1)97# CHECK-LABEL: bb.3.if.end:98# CHECK: DBG_VALUE $r14, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1)99