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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [g++.dg/] [opt/] [cfg1.C] - Rev 853
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// PR optimization/11083
// Origin: <nick@ilm.com>
// Reduced testcase by Wolfgang Bangerth <bangerth@ticam.utexas.edu>
// The compiler used to keep unreachable basic blocks after dead edges
// had been purged, which fooled the LCM code of the GCSE pass.
// { dg-do compile }
// { dg-options "-O2 -fnon-call-exceptions" }
extern void *memmove (void *, const void *, unsigned int) throw ();
struct S {
int *q;
S(int *i) : q(i) {}
};
struct X {
int *p;
void foo(S first, S last) {
try { memmove(0, 0, last.q - first.q); }
catch(...) { throw; }
}
void bar (const X& x);
};
void X::bar (const X& x)
{
const unsigned int xlen = S(x.p).q - S(x.p).q;
if (xlen > 0)
foo(S(x.p), S(x.p));
}
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