https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79044
Bug ID: 79044
Summary: ICE in insn_is_swappable_p, at
config/rs6000/rs6000.c:41191
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
Created attachment 40492
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40492&action=edit
preprocessed source
seen with the trunk 243972, and the gcc-branch, with -O1 and up. error message
in gcc-6 is slightly different.
$ cat THVectorDispatch.i
float a;
void b() {
__attribute__((altivec(vector__))) float c = __builtin_vec_xl(0, &a);
__builtin_vec_xst(c, 0, &a);
}
$ gcc -c -O THVectorDispatch.i
THVectorDispatch.i: In function 'b':
THVectorDispatch.i:5:1: internal compiler error: in insn_is_swappable_p, at
config/rs6000/rs6000.c:41191
}
^
0x10ab6627 insn_is_swappable_p
../../src/gcc/config/rs6000/rs6000.c:41191
0x10ab6627 rs6000_analyze_swaps(function*)
../../src/gcc/config/rs6000/rs6000.c:42267
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
gcc configured with --enable-secureplt --with-cpu=power8
$ gcc-6 -c -O THVectorDispatch.i
THVectorDispatch.i: In function 'b':
THVectorDispatch.i:5:1: error: unrecognizable insn:
}
^
(insn 6 5 7 2 (set (reg:V4SF 156)
(vec_select:V4SF (vec_select:V4SF (mem:V4SF (reg/f:DI 157) [0 S16 A8])
(parallel [
(const_int 3 [0x3])
(const_int 2 [0x2])
(const_int 1 [0x1])
(const_int 0 [0])
]))
(parallel:V4SF [
(const_int 2 [0x2])
(const_int 3 [0x3])
(const_int 0 [0])
(const_int 1 [0x1])
]))) THVectorDispatch.i:3 -1
(nil))
THVectorDispatch.i:5:1: internal compiler error: in extract_insn, at
recog.c:2287
Please submit a full bug report,
with preprocessed source if appropriate.
