https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82927
Bug ID: 82927
Summary: [8 Regression] ICE in verify_flow_info building SH
glibc
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jsm28 at gcc dot gnu.org
CC: hubicka at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Target: sh4-linux-gnu
Created attachment 42570
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42570&action=edit
preprocessed source
Given the fix for bug 82863 (checked in although that bug isn't yet closed),
GCC completes the libgcc build but then ICEs building glibc for sh4-linux-gnu.
My expectation is that this ICE was also introduced by r254379, though I
haven't tested to verify this. Compile the attached test (not reduced) with
-O2.
gconv_builtin.c: In function '__gconv_get_builtin_trans':
gconv_builtin.c:86:1: error: verify_flow_info: Wrong probability of edge 10->12
gconv_builtin.c:86:1: error: verify_flow_info: Wrong probability of edge 10->11
gconv_builtin.c:86:1: error: verify_flow_info: Wrong probability of edge 6->9
gconv_builtin.c:86:1: error: verify_flow_info: Wrong probability of edge 6->7
during RTL pass: expand
gconv_builtin.c:86:1: internal compiler error: verify_flow_info failed
0x71ba23 verify_flow_info()
/scratch/jmyers/glibc/many8/src/gcc/gcc/cfghooks.c:265
0x10a9ef2 checking_verify_flow_info
/scratch/jmyers/glibc/many8/src/gcc/gcc/cfghooks.h:198
0x10a9ef2 try_optimize_cfg
/scratch/jmyers/glibc/many8/src/gcc/gcc/cfgcleanup.c:3015
0x10aa1fd cleanup_cfg(int)
/scratch/jmyers/glibc/many8/src/gcc/gcc/cfgcleanup.c:3179
0x718815 execute
/scratch/jmyers/glibc/many8/src/gcc/gcc/cfgexpand.c:6511
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
