# RUN: llc %s -o - -run-pass=early-tailduplication | FileCheck %s --check-prefixes=CHECK,DEBUG
# RUN: llc %s -o - -run-pass=mir-strip-debug,early-tailduplication -mir-strip-debugify-only=0 | FileCheck %s --check-prefix=CHECK
# We should get the same result with and without debug information.
# Specifically, the register class of [[COPY]] should not be changed to
# gpr32common with debug info while staying as gpr32sp without.
--- |
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-none-linux-gnu"
define void @test() !dbg !8 {
entry:
ret void
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3, !4, !5}
!llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "My compiler", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "foo.c", directory: "/bar")
!2 = !{i32 7, !"Dwarf Version", i32 4}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = !{i32 1, !"wchar_size", i32 1}
!5 = !{i32 7, !"frame-pointer", i32 2}
!6 = !{!"My compiler"}
!7 = !DILocalVariable(name: "i", scope: !8, file: !1, line: 6, type: !12)
!8 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 5, type: !9, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
!9 = !DISubroutineType(types: !10)
!10 = !{null}
!11 = !{!7}
!12 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
!13 = !DILocation(line: 0, scope: !8)
...
---
name: test
tracksRegLiveness: true
liveins: []
body: |
; CHECK-LABEL: name: test
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $w0, $wzr
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr32sp = COPY $w0
; CHECK-NEXT: CBNZW $wzr, %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x0 = COPY undef $x0
; DEBUG-NEXT: DBG_VALUE [[COPY]], $noreg, !11, !DIExpression(), debug-location !DILocation(line: 0, scope: !7)
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]]
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; DEBUG-NEXT: DBG_VALUE [[COPY]], $noreg, !11, !DIExpression(), debug-location !DILocation(line: 0, scope: !7)
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gpr32 = COPY [[COPY]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: RET undef $lr, implicit undef $w0
bb.0:
successors: %bb.2, %bb.1
liveins: $w0, $wzr
%1:gpr32sp = COPY $w0
CBNZW $wzr, %bb.2
bb.1:
successors: %bb.3
$x0 = COPY undef $x0
B %bb.3
bb.2:
successors: %bb.3
bb.3:
successors: %bb.5
%2:gpr32 = PHI %1, %bb.1, %1, %bb.2
DBG_VALUE %2, $noreg, !7, !DIExpression(), debug-location !13
B %bb.5
bb.4:
RET undef $lr, implicit undef $w0
bb.5:
successors: %bb.4
B %bb.4
...
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