1 files changed, 68 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/remove-debug-2.ll b/test/Transforms/SimplifyCFG/remove-debug-2.ll
new file mode 100644
index 000000000000..6362f53e14c1
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/remove-debug-2.ll
@@ -0,0 +1,68 @@
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+
+; Check if the debug info for hoisted store for "ret = 0" is removed
+;
+; int foo(int x) {
+;   int ret = 1;
+;   if (x)
+;     ret = 0;
+;   return ret;
+; }
+;
+; CHECK: store i32 1,{{.+}}!dbg ![[DLOC1:[0-9]+]]
+; CHECK: icmp ne {{.+}}!dbg ![[DLOC2:[0-9]+]]
+; CHECK: [[VREG:%[^ ]+]] = select
+; CHECK: store i32 [[VREG]]
+; CHECK-NOT: !dbg
+; CHECK-SAME: {{$}}
+; CHECK: ret {{.+}}!dbg ![[DLOC3:[0-9]+]]
+; CHECK: ![[DLOC1]] = !DILocation(line: 2
+; CHECK: ![[DLOC2]] = !DILocation(line: 3
+; CHECK: ![[DLOC3]] = !DILocation(line: 5
+
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: noinline nounwind uwtable
+define i32 @foo(i32) !dbg !6 {
+  %2 = alloca i32, align 4
+  %3 = alloca i32, align 4
+  store i32 %0, i32* %2, align 4
+  store i32 1, i32* %3, align 4, !dbg !14
+  %4 = load i32, i32* %2, align 4, !dbg !15
+  %5 = icmp ne i32 %4, 0, !dbg !15
+  br i1 %5, label %6, label %7, !dbg !17
+
+; <label>:6:                                      ; preds = %1
+  store i32 0, i32* %3, align 4, !dbg !18
+  br label %7, !dbg !19
+
+; <label>:7:                                      ; preds = %6, %1
+  %8 = load i32, i32* %3, align 4, !dbg !20
+  ret i32 %8, !dbg !21
+}
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
+!1 = !DIFile(filename: "foo.c", directory: "b/")
+!2 = !{}
+!3 = !{i32 2, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{}
+!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!7 = !DISubroutineType(types: !8)
+!8 = !{!9, !9}
+!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!10 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 1, type: !9)
+!11 = !DIExpression()
+!12 = !DILocation(line: 1, column: 13, scope: !6)
+!13 = !DILocalVariable(name: "ret", scope: !6, file: !1, line: 2, type: !9)
+!14 = !DILocation(line: 2, column: 7, scope: !6)
+!15 = !DILocation(line: 3, column: 7, scope: !16)
+!16 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 7)
+!17 = !DILocation(line: 3, column: 7, scope: !6)
+!18 = !DILocation(line: 4, column: 9, scope: !16)
+!19 = !DILocation(line: 4, column: 5, scope: !16)
+!20 = !DILocation(line: 5, column: 10, scope: !6)
+!21 = !DILocation(line: 5, column: 3, scope: !6)