[Bug inline-asm/19226] New: ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[Bug inline-asm/19226] New: ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[ghazi at gcc dot gnu dot org]

When running the GCC testsuite on i686-pc-linux-gnu using -fpic or -fPIC, I get 
additional failures with 3.3, 3.4 and mainline:

FAIL: g++.old-deja/g++.pt/asm1.C (test for excess errors)
FAIL: g++.old-deja/g++.pt/asm2.C (test for excess errors)

as shown here:
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00029.html
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00085.html
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00084.html

Both of these tests fail like this:

g++.old-deja/g++.pt/asm1.C:6: error: can't find a register in class `BREG' 
while reloading `asm'

Is there something to fix in the compiler, the testcase, or should the test be 
bypassed when using -fpic/-fPIC ?

-- 
           Summary: ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -
                    fpic/-fPIC
           Product: gcc
           Version: 3.3.6
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: inline-asm
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-02 17:04 -------
Lets look at the testcases:
        __asm__ __volatile__("addl %1, %0" : "=a" (v) : "b" (i));

Hmm, IIRC ebx is the PIC register so this should not be tested at all -fPIC/-fpic.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|inline-asm                  |target


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[kghazi at verizon dot net]

------- Additional Comments From kghazi at verizon dot net  2005-01-02 17:18 -------
Subject: Re:  ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

I'm not familiar with inline asm, what exactly in the testcase reveals that
ebx will be used?
Thanks.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-03 15:11 -------
(In reply to comment #2)
> Subject: Re:  ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC
> 
> I'm not familiar with inline asm, what exactly in the testcase reveals that
> ebx will be used?

The b constraint in ("b") says that this is going to use the ebx register.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-01-03 15:11:34
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[ghazi at gcc dot gnu dot org]

------- Additional Comments From ghazi at gcc dot gnu dot org  2005-01-05 16:38 -------
Patch submitted here.
http://gcc.gnu.org/ml/gcc-patches/2005-01/msg00284.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[ghazi at gcc dot gnu dot org]

------- Additional Comments From ghazi at gcc dot gnu dot org  2005-01-06 02:37 -------
Installed on mainline, waiting for dg-skip-if before propagating to branches.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] [3.4 only] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.0.0
            Summary|ICE in g++.old-             |[3.4 only] ICE in g++.old-
                   |deja/g++.pt/asm1.C and      |deja/g++.pt/asm1.C and
                   |asm2.C with -fpic/-fPIC     |asm2.C with -fpic/-fPIC
   Target Milestone|---                         |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226

[Bug target/19226] [3.4 only] ICE in g++.old-deja/g++.pt/asm1.C and asm2.C with -fpic/-fPIC

[mmitchel at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.4                       |3.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19226