https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84679
Bug ID: 84679
Summary: internal compiler error: in
lra_eliminate_reg_if_possible, at
lra-eliminations.c:1382
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: inline-asm
Assignee: unassigned at gcc dot gnu.org
Reporter: vegard.nossum at gmail dot com
Target Milestone: ---
Input:
void f() {
int b;
asm("" : "=mp" (b));
(void) &b;
}
Output:
$ xgcc -x c++ -S -Wall -
during RTL pass: reload
<stdin>: In function 'void f()':
<stdin>:5:1: internal compiler error: in lra_eliminate_reg_if_possible, at
lra-eliminations.c:1382
0x28cfae3 lra_eliminate_reg_if_possible(rtx_def**)
/home/vegard/git/gcc/gcc/lra-eliminations.c:1382
0x289671b address_eliminator
/home/vegard/git/gcc/gcc/lra-constraints.c:362
0x289671b satisfies_address_constraint_p
/home/vegard/git/gcc/gcc/lra-constraints.c:411
0x289671b satisfies_address_constraint_p
/home/vegard/git/gcc/gcc/lra-constraints.c:423
0x289671b process_alt_operands
/home/vegard/git/gcc/gcc/lra-constraints.c:2281
0x28a8be3 curr_insn_transform
/home/vegard/git/gcc/gcc/lra-constraints.c:3860
0x28bbf56 lra_constraints(bool)
/home/vegard/git/gcc/gcc/lra-constraints.c:4877
0x282c524 lra(_IO_FILE*)
/home/vegard/git/gcc/gcc/lra.c:2419
0x260b334 do_reload
/home/vegard/git/gcc/gcc/ira.c:5465
0x260b334 execute
/home/vegard/git/gcc/gcc/ira.c:5649
$ xgcc --version
xgcc (GCC) 8.0.1 20180301 (experimental)
Built from git c435a9e730c6e8f10da09d58b4fc9aaeb401b0d5 (r258097).
Seems to have been introduced between 6.3.0 and 7.1.0.
Test case was minimised by C-Reduce.
