https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113206
Bug ID: 113206
Summary: [14] RISC-V rv64gcv vector: Runtime mismatch with
rv64gc
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at rivosinc dot com
Target Milestone: ---
Testcase:
signed char e;
short f = 8;
signed d;
int(g)(int o, int r) { return o & (o ^ -1) < 0 ? o : o - r; }
#pragma pack(1)
struct {
short h;
unsigned : 18;
short i;
long j;
int k;
char l;
long m;
int n;
} a, b, s, c, *p = &b, *u = &s, q = {1};
void t() {
*p = a;
for (; e > -7; e = g(e, 8))
;
q = *u = c;
for (; d - 3; d = 3)
;
}
int main() {
t();
if (f == 8)
return 0;
else
return 1;
}
Commands:
rv64gcv:
> /scratch/tc-testing/tc-jan-1-trunk/build-rv64gcv/bin/riscv64-unknown-linux-gnu-gcc
> -march=rv64gcv -O3 red.c -o user-config.out
> QEMU_CPU=rv64,vlen=128,v=true,vext_spec=v1.0,Zve32f=true,Zve64f=true timeout
> --verbose -k 0.1 1
> /scratch/tc-testing/tc-dec-22-trunk/build-rv64gcv/bin/qemu-riscv64
> user-config.out
> echo $?
1
rv64gc:
> /scratch/tc-testing/tc-jan-1-trunk/build-rv64gcv/bin/riscv64-unknown-linux-gnu-gcc
> -march=rv64gc -O3 red.c -o user-config.out
> QEMU_CPU=rv64,vlen=128,v=true,vext_spec=v1.0,Zve32f=true,Zve64f=true timeout
> --verbose -k 0.1 1
> /scratch/tc-testing/tc-dec-22-trunk/build-rv64gcv/bin/qemu-riscv64
> user-config.out
> echo $?
0
Nothing touches f, so it should still be 8 after the function.
