[Bug middle-end/20187] New: wrong code for ((unsigned char)(unsigned long long)((a?a:1)(a*b)))?0:1)
Function test has value 0. Should have value 1;
#include stdio.h
int a=0x101;
int b=0x100;
int test(){
return (
((unsigned char)(unsigned long long) ( (a?a:1) (a*b) ))
? 0 : 1 );
}
int main(void){
if((unsigned char)(unsigned long long) (a(a*b)))return 2;
if( test() ){
printf(successful\n); return 0;
} else {
printf(failed\n); return 1;
}
}
Related to Bug 19606?
GNU CPP version 2.95.2 19991024 (release) (sparc) successful
GNU C version 3.3.3 (sparc-sun-solaris2.8) failed
GNU CPP version 3.2 (cpplib) (i386 Linux/ELF) failed
GNU C version 3.3.2 (i686-pc-linux-gnu) failed
GNU C version 3.3.5 (i686-pc-linux-gnu) failed
GNU C version 3.4.3 (i686-pc-linux-gnu) failed
--
Summary: wrong code for ((unsigned char)(unsigned long
long)((a?a:1)(a*b)))?0:1)
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: heinrich dot brand at fujitsu-siemens dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux
GCC host triplet: i686-pc-linux
GCC target triplet: i686-pc-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20187
[Bug middle-end/19606] New: wrong code for arith.expr: (((unsigned int)(signed int) a ) / 2LL) with signed char a=-4
The value of test should be 0x7ffe and is 0xfffe;
Flags: none
(Also in 3.3.5)
#include stdio.h
signed char a=-4;
int test(){
return (((unsigned int)(signed int) a ) / 2LL) ;
}
int main(void){
int r;
r=test();
printf(test output: %#x == %d %x %x\n,r,r
,(r==0x7ffe),(r==0xfffe));
if(r == ( ((unsigned int)(signed int) (signed char) -4 ) / 2LL ))
printf(test successful\n);
else
printf(test failed\n);
return 0;
}
--
Summary: wrong code for arith.expr: (((unsigned int)(signed int)
a ) / 2LL) with signed char a=-4
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: heinrich dot brand at fujitsu-siemens dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: Intel-Linux
GCC host triplet: Intel-Linux
GCC target triplet: Intel-Linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19606
[Bug middle-end/19100] New: Wrong code for ?-operator with casted ?-operator predicat
The function test returns 17 not 18 as required.
#include stdio.h
signed char test(long v[]){
return ( ( ((signed char) (v[1] ? 0x100 : 0 ))) ? 17 : 18);
}
int main(void){
static long v[3];
v[1]=2;
printf(test : %d\n,test(v));
return 0;
}
--
Summary: Wrong code for ?-operator with casted ?-operator
predicat
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: heinrich dot brand at fujitsu-siemens dot com
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=19100
[Bug middle-end/18927] O(n^2) compile time with -O0 (n= number of basic blocks) in local alloc
--- Additional Comments From heinrich dot brand at fujitsu-siemens dot com 2004-12-13 11:37 --- My compiler outputs really this line: global alloc :1083.72 (99%) usr 0.39 (51%) sys1085.19 (99%) wall Line with context: [EMAIL PROTECTED]:~/CCS/GLOBALALLOC/04 /home/hei/GCCBIN/3.4.3/bin/gcc -S -O0 -v - ftime-report z.c Lese Spezifikationen von /home/hei/GCCBIN/3.4.3/lib/gcc/i686-pc-linux- gnu/3.4.3/specs Konfiguriert mit: ../gcc-3.4.3/configure -prefix /home/hei/GCCBIN/3.4.3 -- enable-checking Thread-Modell: posix gcc-Version 3.4.3 /home/hei/GCCBIN/3.4.3/libexec/gcc/i686-pc-linux-gnu/3.4.3/cc1 -quiet -v z.c - quiet -dumpbase z.c -mtune=pentiumpro -auxbase z -O0 -version -ftime-report -o z.s nicht vorhandenes Verzeichnis »/home/hei/GCCBIN/3.4.3/lib/gcc/i686-pc-linux- gnu/3.4.3/../../../../i686-pc-linux-gnu/include« wird ignoriert #include ... - Suche beginnt hier: #include ... - Suche beginnt hier: /usr/local/include /home/hei/GCCBIN/3.4.3/include /home/hei/GCCBIN/3.4.3/lib/gcc/i686-pc-linux-gnu/3.4.3/include /usr/include Ende der Suchliste. GNU C version 3.4.3 (i686-pc-linux-gnu) compiled by GNU C version 3.2. GGC-Heuristik: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Ausführungszeiten (Sekunden) garbage collection: 1.27 ( 0%) usr 0.00 ( 0%) sys 1.27 ( 0%) wall cfg construction : 0.56 ( 0%) usr 0.00 ( 0%) sys 0.56 ( 0%) wall cfg cleanup : 0.17 ( 0%) usr 0.00 ( 0%) sys 0.17 ( 0%) wall trivially dead code : 0.26 ( 0%) usr 0.00 ( 0%) sys 0.26 ( 0%) wall life analysis : 0.98 ( 0%) usr 0.00 ( 0%) sys 0.98 ( 0%) wall life info update : 0.43 ( 0%) usr 0.00 ( 0%) sys 0.43 ( 0%) wall register scan : 0.49 ( 0%) usr 0.03 ( 4%) sys 0.52 ( 0%) wall rebuild jump labels : 0.31 ( 0%) usr 0.00 ( 0%) sys 0.31 ( 0%) wall preprocessing : 0.20 ( 0%) usr 0.05 ( 6%) sys 0.24 ( 0%) wall lexical analysis : 0.26 ( 0%) usr 0.09 (12%) sys 0.36 ( 0%) wall parser: 0.89 ( 0%) usr 0.05 ( 6%) sys 0.95 ( 0%) wall expand: 1.22 ( 0%) usr 0.05 ( 6%) sys 1.27 ( 0%) wall jump : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall flow analysis : 0.35 ( 0%) usr 0.01 ( 1%) sys 0.36 ( 0%) wall local alloc : 2.50 ( 0%) usr 0.06 ( 8%) sys 2.56 ( 0%) wall global alloc :1083.72 (99%) usr 0.39 (51%) sys1085.19 (99%) wall flow 2: 0.96 ( 0%) usr 0.00 ( 0%) sys 0.96 ( 0%) wall shorten branches : 0.94 ( 0%) usr 0.01 ( 1%) sys 0.95 ( 0%) wall final : 1.25 ( 0%) usr 0.03 ( 4%) sys 1.37 ( 0%) wall rest of compilation : 2.50 ( 0%) usr 0.00 ( 0%) sys 2.50 ( 0%) wall GESAMT:1099.35 0.77 1101.32 [EMAIL PROTECTED]:~/CCS/GLOBALALLOC/04 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18927
[Bug target/18927] New: O(n^2) compile time with -O0 (n= number of basic blocks) in global alloc
{gsub(:, );ga=$3; proz=$4 }
$1==user { u=$2; }
$1==### $2==BB {bb=$3;}
$4==z.s {printf(%s\t %s\t %s\t %s\t %s\n,bb,u,ga,proz ,$1)};
' nohup.out
--
Summary: O(n^2) compile time with -O0 (n= number of basic blocks)
in global alloc
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: heinrich dot brand at fujitsu-siemens dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: Intel SUSE 8.1
GCC host triplet: Intel SUSE 8.1
GCC target triplet: Intel SUSE 8.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18927
