https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89474
Bug ID: 89474
Summary: ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C code:
a;
b(double);
c() {
while (d())
b(a);
}
compiled with recent gcc trunk and compiler flags -O3 -march=native,
does this:
during RTL pass: ira
bug507.c:6:1: internal compiler error: in df_reg_chain_verify_unmarked, at
df-scan.c:3995
6 | }
| ^
0x61ca63 df_reg_chain_verify_unmarked
../../trunk/gcc/df-scan.c:3995
The bug seems to start between revisions 269100 and 269150.
/proc/cpuinfo says
vendor_id : AuthenticAMD
cpu family : 21
model : 2
model name : AMD FX(tm)-8350 Eight-Core Processor
