https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69244
Bug ID: 69244
Summary: [6 Regression] ICE in plus_constant, at explow.c:87 on
i686-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
r232188, i686-linux-gnu, works with -O0
reduced test case:
typedef union {
float f;
int i;
} ls_pcast32;
float a, b;
void fn1();
void fn2() {
int c;
float d, e = a;
fn1();
d = e;
ls_pcast32 p;
p.f = d += 2;
c = p.i - 4;
b = c;
}
$ gcc -c -g -O1 plugin.i
plugin.i: In function 'fn2':
plugin.i:16:1: internal compiler error: in plus_constant, at explow.c:87
}
^
0x835faff plus_constant(machine_mode, rtx_def*, long long, bool)
../../src/gcc/explow.c:87
0x835fb39 plus_constant(machine_mode, rtx_def*, long long, bool)
../../src/gcc/explow.c:143
0x84a4c51 form_sum
../../src/gcc/lra-eliminations.c:213
0x84a5a42 lra_eliminate_regs_1(rtx_insn*, rtx_def*, machine_mode, bool, bool,
long long, bool)
../../src/gcc/lra-eliminations.c:436
0x84a611e eliminate_regs_in_insn(rtx_insn*, bool, bool, long long)
../../src/gcc/lra-eliminations.c:1116
0x84a687e process_insn_for_elimination
../../src/gcc/lra-eliminations.c:1408
0x84a687e lra_eliminate(bool, bool)
../../src/gcc/lra-eliminations.c:1472
0x8492724 lra(_IO_FILE*)
../../src/gcc/lra.c:2370
0x8453477 do_reload
../../src/gcc/ira.c:5385
0x8453477 execute
../../src/gcc/ira.c:5556
Please submit a full bug report,
with preprocessed source if appropriate.
