1 files changed, 72 insertions, 0 deletions
diff --git a/llvm/test/Transforms/AddDiscriminators/multiple.ll b/llvm/test/Transforms/AddDiscriminators/multiple.ll
new file mode 100644
index 00000000000..ea75ee1890a
--- /dev/null
+++ b/llvm/test/Transforms/AddDiscriminators/multiple.ll
@@ -0,0 +1,72 @@
+; RUN: opt < %s -add-discriminators -S | FileCheck %s
+; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s
+
+; Discriminator support for multiple CFG paths on the same line.
+;
+;       void foo(int i) {
+;         int x;
+;         if (i < 10) x = i; else x = -i;
+;       }
+;
+; The two stores inside the if-then-else line must have different discriminator
+; values.
+
+define void @foo(i32 %i) #0 !dbg !4 {
+entry:
+  %i.addr = alloca i32, align 4
+  %x = alloca i32, align 4
+  store i32 %i, i32* %i.addr, align 4
+  %0 = load i32, i32* %i.addr, align 4, !dbg !10
+  %cmp = icmp slt i32 %0, 10, !dbg !10
+  br i1 %cmp, label %if.then, label %if.else, !dbg !10
+
+if.then:                                          ; preds = %entry
+  %1 = load i32, i32* %i.addr, align 4, !dbg !10
+; CHECK:  %1 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]]
+
+  store i32 %1, i32* %x, align 4, !dbg !10
+; CHECK:  store i32 %1, i32* %x, align 4, !dbg ![[THEN]]
+
+  br label %if.end, !dbg !10
+; CHECK:  br label %if.end, !dbg ![[THEN]]
+
+if.else:                                          ; preds = %entry
+  %2 = load i32, i32* %i.addr, align 4, !dbg !10
+; CHECK:  %2 = load i32, i32* %i.addr, align 4, !dbg ![[ELSE:[0-9]+]]
+
+  %sub = sub nsw i32 0, %2, !dbg !10
+; CHECK:  %sub = sub nsw i32 0, %2, !dbg ![[ELSE]]
+
+  store i32 %sub, i32* %x, align 4, !dbg !10
+; CHECK:  store i32 %sub, i32* %x, align 4, !dbg ![[ELSE]]
+
+  br label %if.end
+
+if.end:                                           ; preds = %if.else, %if.then
+  ret void, !dbg !12
+}
+
+attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 (trunk 199750) (llvm/trunk 199751)", isOptimized: false, emissionKind: NoDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
+!1 = !DIFile(filename: "multiple.c", directory: ".")
+!2 = !{}
+!4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
+!5 = !DIFile(filename: "multiple.c", directory: ".")
+!6 = !DISubroutineType(types: !{null, !13})
+!13 = !DIBasicType(encoding: DW_ATE_signed, name: "int", size: 32, align: 32)
+!7 = !{i32 2, !"Dwarf Version", i32 4}
+!8 = !{i32 1, !"Debug Info Version", i32 3}
+!9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
+!10 = !DILocation(line: 3, scope: !11)
+!11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4)
+!12 = !DILocation(line: 4, scope: !4)
+
+; CHECK: ![[THEN]] = !DILocation(line: 3, scope: ![[THENBLOCK:[0-9]+]])
+; CHECK: ![[THENBLOCK]] = !DILexicalBlockFile(scope: ![[SCOPE:[0-9]+]],{{.*}} discriminator: 2)
+; CHECK: ![[ELSE]] = !DILocation(line: 3, scope: ![[ELSEBLOCK:[0-9]+]])
+; CHECK: ![[ELSEBLOCK]] = !DILexicalBlockFile(scope: ![[SCOPE]],{{.*}} discriminator: 4)