1 files changed, 75 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/phi-dbg.ll b/test/CodeGen/AArch64/phi-dbg.ll
new file mode 100644
index 000000000000..a1adf0f50d9b
--- /dev/null
+++ b/test/CodeGen/AArch64/phi-dbg.ll
@@ -0,0 +1,75 @@
+; RUN: llc -O0 %s -mtriple=aarch64 -o - | FileCheck %s
+
+; Test that a DEBUG_VALUE node is create for variable c after the phi has been
+; converted to a ldr.    The DEBUG_VALUE must be *after* the ldr and not before it.
+
+; Created from the C code, compiled with -O0 -g and then passed through opt -mem2reg:
+;
+; int func(int a)
+; {
+;         int c = 1;
+;         if (a < 0 ) {
+;                 c = 12;
+;         }
+;         return c;
+; }
+;
+; Function Attrs: nounwind
+define i32 @func(i32) #0 !dbg !8 {
+  call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !12, metadata !13), !dbg !14
+  call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !15, metadata !13), !dbg !16
+  %2 = icmp slt i32 %0, 0, !dbg !17
+  br i1 %2, label %3, label %4, !dbg !19
+
+; <label>:3:                                      ; preds = %1
+  call void @llvm.dbg.value(metadata i32 12, i64 0, metadata !15, metadata !13), !dbg !16
+  br label %4, !dbg !20
+
+; <label>:4:                                      ; preds = %3, %1
+  %.0 = phi i32 [ 12, %3 ], [ 1, %1 ]
+; CHECK: ldr     w[[REG:[0-9]+]], [sp, #8]
+; CHECK-NEXT: .Ltmp
+  call void @llvm.dbg.value(metadata i32 %.0, i64 0, metadata !15, metadata !13), !dbg !16
+; CHECK-NEXT:  //DEBUG_VALUE: func:c <- %W[[REG]]
+  %5 = add nsw i32 %.0, %0, !dbg !22
+  call void @llvm.dbg.value(metadata i32 %5, i64 0, metadata !15, metadata !13), !dbg !16
+  ret i32 %5, !dbg !23
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #0 = { nounwind }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5, !6}
+!llvm.ident = !{!7}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
+!1 = !DIFile(filename: "a.c", directory: "/tmp")
+!2 = !{}
+!3 = !{i32 2, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{i32 1, !"min_enum_size", i32 4}
+!7 = !{!"clang"}
+!8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!9 = !DISubroutineType(types: !10)
+!10 = !{!11, !11}
+!11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!12 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11)
+!13 = !DIExpression()
+!14 = !DILocation(line: 1, column: 14, scope: !8)
+!15 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 3, type: !11)
+!16 = !DILocation(line: 3, column: 13, scope: !8)
+!17 = !DILocation(line: 4, column: 15, scope: !18)
+!18 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 13)
+!19 = !DILocation(line: 4, column: 13, scope: !8)
+!20 = !DILocation(line: 6, column: 9, scope: !21)
+!21 = distinct !DILexicalBlock(scope: !18, file: !1, line: 4, column: 21)
+!22 = !DILocation(line: 7, column: 4, scope: !8)
+!23 = !DILocation(line: 8, column: 9, scope: !8)