https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120782
Bug ID: 120782
Summary: RISC-V: vector-strict-align not working for spec17 521
ref size
Product: gcc
Version: 15.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pan2.li at intel dot com
Target Milestone: ---
Created attachment 61689
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61689&action=edit
GDB snapshot
When running the spec2017 521 with ref size on K1(vl=256b) board, we meet a
mis-alignment issue similar as below with `-O3 -march=rv64gcvb`
vsetivli zero,2,e64,m1,ta,ma
vlse64.v v2,(t4),zero
The gdb shows the t4 is 0x5553f94, which is a misalign access and result in
SIGBUS from K1 board. Thus, we have a try to add option
`-mvector-strict-align` but unfortunately it looks like not working, we still
meet this SIGBUS with almos the same asm code from dump.
error: a total of 1 children finished with errors
# specinvoke exit: rc=0
****************************************
****************************************
Contents of wrf.err
****************************************
Program received signal SIGBUS: Access to an undefined portion of a memory
object.
Backtrace for this error:
#0 0x3f9cf52857 in ???
#1 0x3f9cf51daf in ???
#2 0x3f9d0677ff in ???
#3 0xd20cac in __module_ra_rrtm_MOD_taugb6
at
/xx/benchspec/CPU/521.wrf_r/build/build_base_gcc-master-250305-rv64.0000/module_ra_rrtm.fppized.f90:5172
#4 0xd22da9 in __module_ra_rrtm_MOD_gasabs
at
/xx/benchspec/CPU/521.wrf_r/build/build_base_gcc-master-250305-rv64.0000/module_ra_rrtm.fppized.f90:6664
#5 0xd2bb9d in __module_ra_rrtm_MOD_rrtm
at
/xxbenchspec/CPU/521.wrf_r/build/build_base_gcc-master-250305-rv64.0000/module_ra_rrtm.fppized.f90:2236
#6 0xd2c767 in __module_ra_rrtm_MOD_rrtmlwrad
at
/xx/benchspec/CPU/521.wrf_r/build/build_base_gcc-master-250305-rv64.0000/module_ra_rrtm.fppized.f90:1994
GDB snapshot, please see the attachment. Feel free to ping me if you cannot
reproduce this.
GNU Fortran (GCC) 15.1.0
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