re PR rtl-optimization/18084 (setfill coupled with inline function: incorrect results on Linux x86)

	PR rtl-optimization/18084
	* g++.dg/opt/pr18084-1.C: New testcase.

From-SVN: r89900

gcc/testsuite/ChangeLog

+2004-10-30  Roger Sayle  <roger@eyesopen.com>
+
+	PR rtl-optimization/18084
+	* g++.dg/opt/pr18084-1.C: New testcase.
+
 2004-10-30  Matt Austern  <austern@apple.com>
 
 	PR c++/17542

gcc/testsuite/g++.dg/opt/pr18084-1.C

+// { dg-do run }
+// { dg-options "-O3" }
+
+extern "C" void abort (void);
+
+struct X {
+    bool init;
+    void foo() { if (!init) init = true; }
+    void bar() { foo();                  }
+
+};
+
+typedef unsigned long long int uint64_t;
+uint64_t mask1, mask2;
+
+uint64_t calc() {
+  return mask1 & mask2;
+}
+
+int main()
+{
+  mask1 = 0x00000000FFFFFFFFull;
+  mask2 = 0x000000000000FFFFull;
+  uint64_t value = calc();
+
+  X().bar();
+
+  if(value != calc())
+    abort ();
+  return 0;
+}
+