https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109566
Bug ID: 109566
Summary: powerpc: unrecognizable insn for -mcpu=e6500
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: sebastian.hu...@embedded-brains.de
Target Milestone: ---
Consider the following test case:
typedef int __int32_t;
typedef unsigned int __uint32_t;
typedef union
{
double value;
struct
{
__uint32_t msw;
__uint32_t lsw;
} parts;
} ieee_double_shape_type;
double __ieee754_fmod(double x, double y)
{
__int32_t n,hx,hy,hz,ix,iy,sx,i;
__uint32_t lx,ly,lz;
do { ieee_double_shape_type ew_u; ew_u.value = (x); (hx) = ew_u.parts.msw;
(lx) = ew_u.parts.lsw; } while (0);
sx = hx&0x80000000;
hx ^=sx;
if(hx<=hy) {
}
if(hx<0x00100000) {
if(hx==0) {
for (ix = -1043, i=lx; i>0; i<<=1) ix -=1;
}
} else ix = (hx>>20)-1023;
if(ix >= -1022)
hx = 0x00100000|(0x000fffff&hx);
while(hx<0x00100000) {
if(n<=20) {
}
}
}
This yields:
powerpc-rtems6-gcc -O2 -mcpu=e6500 -c test.c
test.c: In function '__ieee754_fmod':
test.c:32:1: error: unrecognizable insn:
32 | }
| ^
(insn 52 8 53 2 (parallel [
(set (reg:CC 100 0)
(compare:CC (and:DI (ashift:DI (reg:DI 9 9 [123])
(const_int 33 [0x21]))
(const_int -9007199254740992 [0xffe0000000000000]))
(const_int 0 [0])))
(clobber (reg:DI 9 9 [129]))
]) "test.c":21:4 -1
(nil))
during RTL pass: split2
test.c:32:1: internal compiler error: in extract_insn, at recog.cc:2791
0x40730a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/EB/sebastian_h/src/gcc/gcc/rtl-error.cc:108
0x407329 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/EB/sebastian_h/src/gcc/gcc/rtl-error.cc:116
0x957477 extract_insn(rtx_insn*)
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:2791
0x9574d1 extract_insn_cached(rtx_insn*)
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:2680
0x6a9a0b cleanup_subreg_operands(rtx_insn*)
/home/EB/sebastian_h/src/gcc/gcc/final.cc:3054
0x95583c split_insn
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:3420
0x95a5b2 split_all_insns()
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:3488
0x95a6c8 execute
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:4412
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
