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1# RUN: llc %s -o - -run-pass=early-tailduplication | FileCheck %s --check-prefixes=CHECK,DEBUG2# RUN: llc %s -o - -run-pass=mir-strip-debug,early-tailduplication -mir-strip-debugify-only=0 | FileCheck %s --check-prefix=CHECK3 4# We should get the same result with and without debug information.5# Specifically, the register class of [[COPY]] should not be changed to6# gpr32common with debug info while staying as gpr32sp without.7 8--- |9 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"10 target triple = "aarch64-none-linux-gnu"11 12 define void @test() !dbg !8 {13 entry:14 ret void15 }16 17 !llvm.dbg.cu = !{!0}18 !llvm.module.flags = !{!2, !3, !4, !5}19 !llvm.ident = !{!6}20 21 !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "My compiler", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)22 !1 = !DIFile(filename: "foo.c", directory: "/bar")23 !2 = !{i32 7, !"Dwarf Version", i32 4}24 !3 = !{i32 2, !"Debug Info Version", i32 3}25 !4 = !{i32 1, !"wchar_size", i32 1}26 !5 = !{i32 7, !"frame-pointer", i32 2}27 !6 = !{!"My compiler"}28 !7 = !DILocalVariable(name: "i", scope: !8, file: !1, line: 6, type: !12)29 !8 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 5, type: !9, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)30 !9 = !DISubroutineType(types: !10)31 !10 = !{null}32 !11 = !{!7}33 !12 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)34 !13 = !DILocation(line: 0, scope: !8)35...36---37name: test38tracksRegLiveness: true39liveins: []40body: |41 ; CHECK-LABEL: name: test42 ; CHECK: bb.0:43 ; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)44 ; CHECK-NEXT: liveins: $w0, $wzr45 ; CHECK-NEXT: {{ $}}46 ; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr32sp = COPY $w047 ; CHECK-NEXT: CBNZW $wzr, %bb.248 ; CHECK-NEXT: {{ $}}49 ; CHECK-NEXT: bb.1:50 ; CHECK-NEXT: successors: %bb.4(0x80000000)51 ; CHECK-NEXT: {{ $}}52 ; CHECK-NEXT: $x0 = COPY undef $x053 ; DEBUG-NEXT: DBG_VALUE [[COPY]], $noreg, !11, !DIExpression(), debug-location !DILocation(line: 0, scope: !7)54 ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]]55 ; CHECK-NEXT: B %bb.456 ; CHECK-NEXT: {{ $}}57 ; CHECK-NEXT: bb.2:58 ; CHECK-NEXT: successors: %bb.4(0x80000000)59 ; CHECK-NEXT: {{ $}}60 ; DEBUG-NEXT: DBG_VALUE [[COPY]], $noreg, !11, !DIExpression(), debug-location !DILocation(line: 0, scope: !7)61 ; CHECK-NEXT: [[COPY2:%[0-9]+]]:gpr32 = COPY [[COPY]]62 ; CHECK-NEXT: {{ $}}63 ; CHECK-NEXT: bb.4:64 ; CHECK-NEXT: RET undef $lr, implicit undef $w065 bb.0:66 successors: %bb.2, %bb.167 liveins: $w0, $wzr68 69 %1:gpr32sp = COPY $w070 CBNZW $wzr, %bb.271 72 bb.1:73 successors: %bb.374 75 $x0 = COPY undef $x076 B %bb.377 78 bb.2:79 successors: %bb.380 81 bb.3:82 successors: %bb.583 84 %2:gpr32 = PHI %1, %bb.1, %1, %bb.285 DBG_VALUE %2, $noreg, !7, !DIExpression(), debug-location !1386 B %bb.587 88 bb.4:89 RET undef $lr, implicit undef $w090 91 bb.5:92 successors: %bb.493 94 B %bb.495...96