When attempting to compile Xine for Solaris I got the following error:
gcc -O3 -mcpu=ultrasparc -mtune=ultrasparc -fno-inline-functions -c
test.c -o test.o
/var/tmp//cco3qSnO.s: Assembler messages:
/var/tmp//cco3qSnO.s:464: Error: Illegal operands: There are only 32
single precision f registers; [0-31]
Note: This only fails if I have both -O3 and -fno-inline-functions set.
gcc -v
Reading specs
from /opt/gcc3.3/lib/gcc-lib/sparc-sun-solaris2.8/3.3.6/specs
Configured with: ../configure --host=sparc-sun-solaris2.8
--prefix=/opt/gcc3.3 --enable-shared --with-gnu-ld
--with-ld=/opt/gcc3.3/bin/ld --with-gnu-as --with-as=/opt/gcc3.3/bin/as
--with-cpu=ultrasparc
Thread model: posix
gcc version 3.3.6
I have attached a test case but will include it inlined as well. This
is based off of Xine 1.1.0 src/libffmpeg/libavcodec/eval.c
===== begin testt.c =====
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#ifndef NAN
#define NAN 0
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
typedef struct Parser{
int stack_index;
char *s;
double *const_value;
const char **const_name; // NULL terminated
double (**func1)(void *, double a); // NULL terminated
const char **func1_name; // NULL terminated
double (**func2)(void *, double a, double b); // NULL terminated
char **func2_name; // NULL terminated
void *opaque;
} Parser;
static int strmatch(const char *s, const char *prefix){
int i;
for(i=0; prefix[i]; i++){
if(prefix[i] != s[i]) return 0;
}
return 1;
}
static double evalPrimary(Parser *p){
double d, d2=NAN;
char *next= p->s;
int i;
/* number */
d= strtod(p->s, &next);
if(next != p->s){
p->s= next;
return d;
}
/* named constants */
for(i=0; p->const_name && p->const_name[i]; i++){
if(strmatch(p->s, p->const_name[i])){
p->s+= strlen(p->const_name[i]);
return p->const_value[i];
}
}
p->s= strchr(p->s, '(');
if(p->s==NULL){
printf("Parser: missing ( in \"%s\"\n", next);
return NAN;
}
p->s++; // "("
d= evalExpression(p);
if(p->s[0]== ','){
p->s++; // ","
d2= evalExpression(p);
}
if(p->s[0] != ')'){
printf("Parser: missing ) in \"%s\"\n", next);
return NAN;
}
p->s++; // ")"
if( strmatch(next, "sinh" ) ) d= sinh(d);
else if( strmatch(next, "cosh" ) ) d= cosh(d);
else if( strmatch(next, "tanh" ) ) d= tanh(d);
else if( strmatch(next, "sin" ) ) d= sin(d);
else if( strmatch(next, "cos" ) ) d= cos(d);
else if( strmatch(next, "tan" ) ) d= tan(d);
else if( strmatch(next, "exp" ) ) d= exp(d);
else if( strmatch(next, "log" ) ) d= log(d);
else if( strmatch(next, "squish") ) d= 1/(1+exp(4*d));
else if( strmatch(next, "gauss" ) ) d= exp(-d*d/2)/sqrt(2*M_PI);
else if( strmatch(next, "abs" ) ) d= fabs(d);
else if( strmatch(next, "max" ) ) d= d > d2 ? d : d2;
else if( strmatch(next, "min" ) ) d= d < d2 ? d : d2;
else if( strmatch(next, "gt" ) ) d= d > d2 ? 1.0 : 0.0;
else if( strmatch(next, "gte" ) ) d= d >= d2 ? 1.0 : 0.0;
else if( strmatch(next, "lt" ) ) d= d > d2 ? 0.0 : 1.0;
else if( strmatch(next, "lte" ) ) d= d >= d2 ? 0.0 : 1.0;
else if( strmatch(next, "eq" ) ) d= d == d2 ? 1.0 : 0.0;
else if( strmatch(next, "(" ) ) d= d;
// else if( strmatch(next, "l1" ) ) d= 1 + d2*(d - 1);
// else if( strmatch(next, "sq01" ) ) d= (d >= 0.0 && d <=1.0) ?
1.0 : 0.0;
else{
for(i=0; p->func1_name && p->func1_name[i]; i++){
if(strmatch(next, p->func1_name[i])){
return p->func1[i](p->opaque, d);
}
}
for(i=0; p->func2_name && p->func2_name[i]; i++){
if(strmatch(next, p->func2_name[i])){
return p->func2[i](p->opaque, d, d2);
}
}
printf("Parser: unknown function in \"%s\"\n", next);
return NAN;
}
return d;
}
--
Summary: gcc optimization error for sparc with xine/ffmpeg, bad
assembly generated
Product: gcc
Version: 3.3.6
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: aaronw at net dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: sparc-sun-solaris2.8
GCC host triplet: sparc-sun-solaris2.8
GCC target triplet: sparc-sun-solaris2.8
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23222
