[Bug optimization/13893] [3.5 regression] ICE emit_pop_insn, at reg-stack.c:922 (regression)

["bangerth at dealii dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From bangerth at dealii dot org  2004-01-28 14:11 -------
Confirmed. This wasn't too hard: 
------------------ 
double atan2 (double, double) throw (); 
 
struct V { double x, y, z; }; 
 
void bar (V &); 
 
inline double xatan2 (double y, double x) { 
  return 1 ? atan2(y,x) : 0.0; 
} 
 
double orientation (const V &dir) { 
  if (dir.x>0)  
    return xatan2(dir.y,-dir.x); 
  else  
    return xatan2(dir.y,dir.x); 
} 
 
void foo (V *vdetpt, double* heading) { 
  bar (vdetpt[0]); 
  heading[0] = orientation (vdetpt[0]); 
} 
----------------------------------- 
 
g/x> /home/bangerth/bin/gcc-3.5-pre/bin/c++ -c -O2 -mtune=pentiumpro 
-ffast-math x.cc 
x.cc: In function `double orientation(const V&)': 
x.cc:16: internal compiler error: in emit_pop_insn, at reg-stack.c:922 
 
This is a mainline regression against the 3.4 branch. 3.3.x doesn't have 
-mtune=pentiumpro. 
 
W. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
      Known to work|                            |3.4.0
   Last reconfirmed|0000-00-00 00:00:00         |2004-01-28 14:11:19
               date|                            |
            Summary|ICE on legal code in        |[3.5 regression] ICE
                   |emit_pop_insn, at reg-      |emit_pop_insn, at reg-
                   |stack.c:922 (regression)    |stack.c:922 (regression)
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13893