https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85624
Bug ID: 85624
Summary: ICE when initializing array that is 128-byte aligned
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: saaadhu at gcc dot gnu.org
Target Milestone: ---
avr-gcc 9.0.0 20180502 (and older versions) crashes with an ICE for the
following piece of code
void foo() {
volatile int arr[3] __attribute__((aligned(128))) = {0};
return arr[2];
}
Compiled with -O3 -mmcu=avr5, the compiler outputs
In function 'foo':
5 : warning: 'return' with a value, in function returning void
return arr[2];
~~~^~~
3 : note: declared here
void foo() {
^~~
6 : error: unrecognizable insn:
}
^
(insn 13 12 14 2 (parallel [
(set (mem:BLK (reg:HI 49) [0 A8])
(const_int 0 [0]))
(use (reg:QI 48))
(use (const_int 128 [0x80]))
(clobber (scratch:HI))
(clobber (scratch:QI))
]) "/tmp/gcc-explorer-compiler11843-10755-1jj9whv.s66yh3q5mi/example.c":4 -1
(nil))
during RTL pass: vregs
6 : internal compiler error: in extract_insn, at recog.c:2304
0x5a8f99 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc-src/gcc/rtl-error.c:108
0x5a8fb8 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc-src/gcc/rtl-error.c:116
0xb1394b extract_insn(rtx_insn*)
../../gcc-src/gcc/recog.c:2304
0x8b7873 instantiate_virtual_regs_in_insn
../../gcc-src/gcc/function.c:1599
0x8b7873 instantiate_virtual_regs
../../gcc-src/gcc/function.c:1969
0x8b7873 execute
../../gcc-src/gcc/function.c:2018
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Please include the complete backtrace with any bug report.
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Compiler exited with result code 1
