https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121028
Bug ID: 121028
Summary: Some tests added in r15-5785-gdfa78681851 fail with
-fstack-protector-strong
Product: gcc
Version: 15.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: siddhesh at gcc dot gnu.org
Target Milestone: ---
The following tests fail when they're built with -fstack-protector-strong:
gcc.target/aarch64/sve/acle/asm/ld2_mf8.c
gcc.target/aarch64/sve/acle/asm/ld3_mf8.c
gcc.target/aarch64/sve/acle/asm/ld4_mf8.c
gcc.target/aarch64/sve/acle/asm/reinterpret_mf8.c
because they generate `smstop sm`, which the assembler does not expect:
/tmp/ccAM1BXW.s: Assembler messages:
/tmp/ccAM1BXW.s:116: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:287: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:453: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:620: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:791: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:958: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:1125: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:1293: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:1461: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:1632: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:1796: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:1962: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:2128: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:2294: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:2460: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:2626: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:2792: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:2958: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:3124: Error: selected processor does not support `smstop sm'
/tmp/ccAM1BXW.s:3297: Error: selected processor does not support `smstop sm'
They're built with -march=armv8.2-a+sve and they work just fine when built
without stack-protector. However when built with -fstack-protector-strong, the
functions end up with a `smstop sm` just before the __stack_chk_fail call.
This seems wrong since the assembler only expects `smstop` with
-march=armv8.2-a+sve2+sme.
To reproduce:
gcc/xgcc -Bgcc -fstack-protector-strong -std=c90 -O0 -DSTREAMING_COMPATIBLE
-DTEST_FULL -march=armv8.2-a+sve -c -o ld2_mf8.s
../gcc/testsuite/gcc.target/aarch64/sve/acle/asm/ld2_mf8.c
