[Bug target/16624] New: [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[Bug target/16624] New: [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[loki at inf dot u-szeged dot hu]

There is something wrong with the float access when the ?: operators are
used on arm. If the body of the ?: operators contain float variables the
compiler'll drop some errors.

I made several crosscompiler, and I only found that arm-*-linux 
doesn't handle the following c code:

float a;
void foo(float b) {
  a = (b > 0 ? 1  : (b < 0 ? -1 : 0));
}

Command line (arm-linux-gcc (GCC) 3.5.0 20040718):
arm-linux-gcc -c -O1 foo.i

Output:
foo.i: In function `foo':
foo.i:6: internal compiler error: in elim_reg_cond, at flow.c:3244

-- 
           Summary: [3.5.0 regression] [arm] segmentation fault on float
                    accesses in the ?: operators' body
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: loki at inf dot u-szeged dot hu
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: arm-unknown-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624

[Bug target/16624] [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-07-19 18:50 -------
Actually it looks like more optimization before getting to RTL causes this to changed into what the ICE 
is for PR 15068.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |15068
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624

[Bug target/16624] [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[pinskia at gcc dot gnu dot org]

-- 
Bug 16624 depends on bug 15068, which changed state.

Bug 15068 Summary: ICE in elim_reg_cond
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15068

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624

[Bug target/16624] [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-02 16:54 -------
Can you try this again as PR 15068 is fixed?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624

[Bug target/16624] [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[loki at inf dot u-szeged dot hu]

------- Additional Comments From loki at inf dot u-szeged dot hu  2004-08-03 13:35 -------
(In reply to comment #2)
> Can you try this again as PR 15068 is fixed?
Yep. The test case which I sent is fixed, BUT there is another regression. See
the following:

Second test case:
double
foo(double x, double y)
{
  return (x >= 1 ? 0 : 1 - x)/y;
}

Cmd line (2004-08-03 08:00:00 UTC):
arm-linux-gcc -c -O1 -o foo2.o foo2.i

Output:
foo2.i: In function `foo':
foo2.i:5: internal compiler error: in elim_reg_cond, at flow.c:3247


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624

[Bug target/16624] [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-18 15:59:19
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624

[Bug target/16624] [3.5.0 regression] [arm] segmentation fault on float accesses in the ?: operators' body

[rearnsha at gcc dot gnu dot org]

------- Additional Comments From rearnsha at gcc dot gnu dot org  2004-09-01 10:49 -------
I think I've now fixed all the remaining cases.  Please re-open or refile if you
find any further problems.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16624