New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6882 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/SCCP/2003-06-24-OverdefinedPHIValue.ll b/test/Transforms/SCCP/2003-06-24-OverdefinedPHIValue.ll
new file mode 100644 (file)
index 0000000..e91c643
--- /dev/null
+++ b/test/Transforms/SCCP/2003-06-24-OverdefinedPHIValue.ll
@@ -0,0 +1,36 @@
+; RUN: if as < %s | opt -sccp -simplifycfg | dis | grep then:
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+void %cprop_test11(int* %data.1) {
+entry:         ; No predecessors!
+       %tmp.1 = load int* %data.1              ; <int> [#uses=3]
+       %tmp.41 = setgt int %tmp.1, 1           ; <bool> [#uses=1]
+       br bool %tmp.41, label %no_exit, label %loopexit
+
+no_exit:               ; preds = %entry, %then, %endif
+       %j.0 = phi int [ %j.0, %endif ], [ %i.0, %then ], [ 1, %entry ]         ; <int> [#uses=3]
+       %i.0 = phi int [ %inc, %endif ], [ %inc1, %then ], [ 1, %entry ]                ; <int> [#uses=4]
+       %tmp.8.not = cast int %j.0 to bool              ; <bool> [#uses=1]
+       br bool %tmp.8.not, label %endif, label %then
+
+then:          ; preds = %no_exit
+       %inc1 = add int %i.0, 1         ; <int> [#uses=3]
+       %tmp.42 = setlt int %inc1, %tmp.1               ; <bool> [#uses=1]
+       br bool %tmp.42, label %no_exit, label %loopexit
+
+endif:         ; preds = %no_exit
+       %inc = add int %i.0, 1          ; <int> [#uses=3]
+       %tmp.4 = setlt int %inc, %tmp.1         ; <bool> [#uses=1]
+       br bool %tmp.4, label %no_exit, label %loopexit
+
+loopexit:              ; preds = %entry, %endif, %then
+       %j.1 = phi int [ 1, %entry ], [ %j.0, %endif ], [ %i.0, %then ]         ; <int> [#uses=1]
+       %i.1 = phi int [ 1, %entry ], [ %inc, %endif ], [ %inc1, %then ]                ; <int> [#uses=1]
+       %tmp.17 = getelementptr int* %data.1, long 1            ; <int*> [#uses=1]
+       store int %j.1, int* %tmp.17
+       %tmp.23 = getelementptr int* %data.1, long 2            ; <int*> [#uses=1]
+       store int %i.1, int* %tmp.23
+       ret void
+}