https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72771
Bug ID: 72771
Summary: powerpc64le ICE with -mcpu=power9
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: anton at samba dot org
CC: amodra at gcc dot gnu.org, meissner at gcc dot gnu.org,
segher at gcc dot gnu.org, wschmidt at gcc dot gnu.org
Target Milestone: ---
Target: powerpc64le-linux
The following test case:
void fn2(void);
void fn3(unsigned long);
signed char a;
int b, c, e, f;
float *d;
void fn1(void) {
short g = 0;
lbl_986:
for (;;) {
c = 0;
for (; c <= 2;) {
*d = g;
fn2();
if (e)
goto lbl_986;
}
g = 2;
for (; g >= 0; g--) {
for (; b;) {
fn3(45360);
f = 0;
for (; a >= 0; a--)
;
}
}
}
}
Built with:
gcc -O3 -mcpu=power9
Hits an ICE:
crash1.i:29:1: error: insn does not satisfy its constraints:
}
^
(insn 316 362 349 38 (parallel [
(set (reg:SF 63 31 [orig:334 _48 ] [334])
(float:SF (mem/u/c:HI (lo_sum:DI (reg:DI 6 6)
(unspec:DI [
(symbol_ref/u:DI ("*.LC14") [flags 0x2])
(reg:DI 2 2)
] UNSPEC_TOCREL)) [6 S2 A16])))
(clobber (reg:DI 77 0))
(clobber (scratch:DI))
]) 350 {*floathisf2_internal}
(expr_list:REG_EQUAL (const_double:SF -1.0e+0 [-0x0.8p+1])
(nil)))
crash1.i:29:1: internal compiler error: in extract_constrain_insn, at
recog.c:2211
0x10839993 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/gcc/rtl-error.c:108
0x108399eb _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc/gcc/rtl-error.c:119
0x107ff5f7 extract_constrain_insn(rtx_insn*)
../../gcc/gcc/recog.c:2211
0x107ce263 reload_cse_simplify_operands
../../gcc/gcc/postreload.c:390
0x107cfe43 reload_cse_simplify
../../gcc/gcc/postreload.c:176
0x107cfe43 reload_cse_regs_1
../../gcc/gcc/postreload.c:215
0x107d1737 reload_cse_regs
../../gcc/gcc/postreload.c:67
0x107d1737 execute
../../gcc/gcc/postreload.c:2342
