Execution of gcc.c-torture/execute/20050713-1.c fails on r7000 with -O2 and
-Os,
but passes with -O0, -O1, -O3 or when --fno-optimize-sibling-calls is added
to -O2 or -Os.
A simpler version of the test that reproduces the error is:
extern void abort (void);
struct S
{
int a, b, c;
};
int
foo2 (struct S x, struct S y)
{
if (y.a != 6) abort ();
return 0;
}
int
foo3 (struct S x, struct S y, struct S z)
{
foo2 (x, y);
return 0;
}
int
baz3 (struct S x, struct S y, struct S z)
{
return foo3 (y, z, x);
}
int
main (void)
{
struct S a = { 3, 4, 5 }, b = { 6, 7, 8 }, c = { 9, 10, 11 };
baz3 (c, a, b);
return 0;
}
--
Summary: mips64: wrong code for gcc.c-torture/execute/20050713-
1.c with -O2 or -Os
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: niva at niisi dot msk dot ru
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: mips64-none-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27238
