https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126468
Bug ID: 126468
Summary: [14/15/16/17 Regression] ICE at -O2 on aarch64 during
RTL pass: expand
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: xxs_chy at outlook dot com
Target Milestone: ---
Created attachment 65158
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65158&action=edit
case.c
Reproducer: https://godbolt.org/z/z3rT387TM
The reduced case is attached.
Dump at -O2:
during RTL pass: expand
reduced.c: In function ‘f1’:
reduced.c:51:11: internal compiler error: in expand_bitquery, at
internal-fn.cc:5807
51 | g31 = __builtin_clrsbll(g8);
| ^~~~~~~~~~~~~~~~~~~~~
0x272678d internal_error(char const*, ...)
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/diagnostic-global-context.cc:787
0xb121eb fancy_abort(char const*, int, char const*)
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/diagnostics/context.cc:1813
0x945f1e expand_bitquery
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/internal-fn.cc:5807
0xfd780f expand_CLRSB(internal_fn, gcall*)
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/internal-fn.cc:5817
0xd08e08 expand_call_stmt
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/cfgexpand.cc:3155
0xd08e08 expand_gimple_stmt_1
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/cfgexpand.cc:4273
0xd08e08 expand_gimple_stmt
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/cfgexpand.cc:4420
0xd0ae47 expand_gimple_basic_block
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/cfgexpand.cc:6537
0xd0d037 execute
/data/Projects/compiler-test-env/cte-work/src/gcc/gcc/cfgexpand.cc:7288
/data/Projects/compiler-test-env/cte-work/toolchains/gcc/aarch64-linux-musl/libexec/gcc/aarch64-linux-musl/17.0.0/cc1
-quiet reduced.c -quiet -dumpdir a- -dumpbase reduced.c -dumpbase-ext .c
-mlittle-endian -mabi=lp64 -O2 -o /tmp/ccE3ecSV.s
