1# RUN: llc %s -o - -run-pass=early-tailduplication | FileCheck %s --check-prefixes=CHECK,DEBUG 2# RUN: llc %s -o - -run-pass=mir-strip-debug,early-tailduplication -mir-strip-debugify-only=0 | FileCheck %s --check-prefix=CHECK 3 4# We should get the same result with and without debug information. 5# Specifically, the register class of [[COPY]] should not be changed to 6# 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 void 15 } 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: test 38tracksRegLiveness: true 39liveins: [] 40body: | 41 ; CHECK-LABEL: name: test 42 ; CHECK: bb.0: 43 ; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000) 44 ; CHECK-NEXT: liveins: $w0, $wzr 45 ; CHECK-NEXT: {{ $}} 46 ; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr32sp = COPY $w0 47 ; CHECK-NEXT: CBNZW $wzr, %bb.2 48 ; CHECK-NEXT: {{ $}} 49 ; CHECK-NEXT: bb.1: 50 ; CHECK-NEXT: successors: %bb.4(0x80000000) 51 ; CHECK-NEXT: {{ $}} 52 ; CHECK-NEXT: $x0 = COPY undef $x0 53 ; 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.4 56 ; 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 $w0 65 bb.0: 66 successors: %bb.2, %bb.1 67 liveins: $w0, $wzr 68 69 %1:gpr32sp = COPY $w0 70 CBNZW $wzr, %bb.2 71 72 bb.1: 73 successors: %bb.3 74 75 $x0 = COPY undef $x0 76 B %bb.3 77 78 bb.2: 79 successors: %bb.3 80 81 bb.3: 82 successors: %bb.5 83 84 %2:gpr32 = PHI %1, %bb.1, %1, %bb.2 85 DBG_VALUE %2, $noreg, !7, !DIExpression(), debug-location !13 86 B %bb.5 87 88 bb.4: 89 RET undef $lr, implicit undef $w0 90 91 bb.5: 92 successors: %bb.4 93 94 B %bb.4 95... 96