Date: Wed, 26 May 1999 19:48:31 +0200
From: Ronald de Man <deman AT win DOT tue DOT nl>
To: pgcc AT delorie DOT com
Subject: internal compiler error
Message-ID: <19990526194830.A2551@win.tue.nl>
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Reply-To: pgcc AT delorie DOT com

Hello,

Compiling the following piece of code with optimization -O or higher,
leads to an internal compiler error with pgcc-1.1.3:

-----bla.c-----

long long abc;
long long G(int);
void bla(int);

struct {
  int h;
} k;
 
void R(int t)
{
  int a,b;

  for(a=1;a<=2;a++) {
    if(a)
      k.h^=1;
    bla(4 * (int)(abc >> 60));
    if (G(100) != (abc  & 1) )
      b+=G(b)*t;
  }
}

---------------

$ gcc -c -O bla.c
bla.c: In function `R':
bla.c:20: internal error--insn does not satisfy its constraints:
(insn:HI 38 111 39 (set (reg:SI 1 %edx)
        (subreg:SI (ashiftrt:DI (reg:DI 0 %eax)
                (const_int 60)) 0)) 253 {ashrdi3_const_int_subreg} (insn_list 34 (nil))
    (expr_list:REG_DEAD (mem:DI (symbol_ref:SI ("abc")))
        (nil)))
../../pgcc-1.1.3/gcc/toplev.c:1438: Internal compiler error in function fatal_insn

pgcc-1.1.1 gives a similar error:

$ gcc -Vpgcc-2.91.60 -bi586-pc-linux-gnu -c -O bla.c
bla.c: In function `R':
bla.c:20: internal error--insn does not satisfy its constraints:
(insn:HI 38 106 39 (set (reg:SI 1 %edx)
        (subreg:SI (ashiftrt:DI (reg:DI 0 %eax)
                (const_int 60)) 0)) 242 {ashrdi3_const_int_subreg} (insn_list 34 (nil))
    (expr_list:REG_DEAD (mem:DI (symbol_ref:SI ("abc")))
        (nil)))
../../egcs-1.1.1/gcc/toplev.c:1431: Internal compiler error in function fatal_insn


Ronald