New testcase, distilled from 176.gcc codegen failure

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9248 91177308-0d34-0410-b5e6-96231b3b80d8

test/ExecutionEngine/2003-10-18-PHINode-ConstantExpr-CondCode-Failure.ll

@@ -0,0 +1,29 @@
+; RUN: llvm-as < %s | lli -force-interpreter=false
+
+%A = global int 0
+
+int %main() {
+	%Ret = call int %test(bool true, int 0)	
+	ret int %Ret
+}
+
+int %test(bool %c, int %A) {
+	br bool %c, label %Taken1, label %NotTaken
+
+Cont:
+	%V = phi int [0, %NotTaken], 
+	              [ sub (int cast (int* %A to int), int 1234), %Taken1]
+	ret int 0
+
+NotTaken:
+	br label %Cont	
+
+Taken1:
+	%B = seteq int %A, 0
+	; Code got inserted here, breaking the condition code.
+	br bool %B, label %Cont, label %ExitError
+
+ExitError:
+	ret int 12
+
+}