view gcc/testsuite/g++.dg/opt/reg-stack2.C @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
line wrap: on
line source

// PR target/9786
// Origin: <nick@ilm.com>

// This used to fail on x86 because the reg-stack pass deleted
// an insn that could seemingly trap (but actually doesn't)
// without updating the CFG.

// { dg-do compile }
// { dg-options "-O2 -fnon-call-exceptions" }

struct D1 {
    float l;
    D1 GS() const {D1 d;float f=.299*l;d.l=f;return d;}
    static D1 G() {return D1();}
};

struct D2 {
    D1 g;
    D2(const D1& gi) : g(gi) {}
    D2 GS() const {return D2(g.GS());}
};

class A {
  public:
    virtual ~A() {}
};

class B : public A {
  public:
    B(const D2& mi);
    D2 fm;
};

B::B(const D2 &mi) : fm(mi.GS()) {}