This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
RFA: C++ testcase (was Re: MIPS patch to fix EH info ...)
"Eric Christopher" <echristo@redhat.com> writes:
> [snip]
> Someone else will need to approve the testcase, but I imagine that it's
> fine too.
>
> > [testsuite/]
> > * g++.dg/eh/registers1.C: New test case.
I've not heard more about the testcase. Is it OK to install? I know
it's grisly, but still.
I've reproduced that part of the patch below.
Richard
*** /dev/null Tue Nov 14 21:44:43 2000
--- testsuite/g++.dg/eh/registers1.C Tue Sep 4 16:28:50 2001
***************
*** 0 ****
--- 1,138 ----
+ // Try to check that registers are preserved when the stack is unwound.
+ // { dg-do run }
+ // { dg-options -O2 }
+
+ extern "C" void exit(int);
+ extern "C" void abort();
+
+ // This test case triggers up to DEPTH recursive calls to function
+ // foo(), These calls are numbered so that 0 is the innermost, 1 the
+ // second innermost, and so on. Each call caches NUM_VARS elements of
+ // both DOUBLE_SRC and INT_SRC and applies a trivial operation to each
+ // cached value. The innermost foo() call will throw an integer call
+ // number. The specified call should store its cached values in
+ // DOUBLE_DEST and INT_DEST, which main() will check.
+ const int num_vars = 16;
+ const int depth = 3;
+
+ float float_src[num_vars * depth];
+ float float_dest[num_vars];
+
+ int int_src[num_vars * depth];
+ int int_dest[num_vars];
+
+ void foo (int level, int throw_to)
+ {
+ float *fsrc = &float_src[level * num_vars];
+ float f00 = *fsrc++ + 1.0f;
+ float f01 = *fsrc++ + 1.0f;
+ float f02 = *fsrc++ + 1.0f;
+ float f03 = *fsrc++ + 1.0f;
+ float f04 = *fsrc++ + 1.0f;
+ float f05 = *fsrc++ + 1.0f;
+ float f06 = *fsrc++ + 1.0f;
+ float f07 = *fsrc++ + 1.0f;
+ float f08 = *fsrc++ + 1.0f;
+ float f09 = *fsrc++ + 1.0f;
+ float f10 = *fsrc++ + 1.0f;
+ float f11 = *fsrc++ + 1.0f;
+ float f12 = *fsrc++ + 1.0f;
+ float f13 = *fsrc++ + 1.0f;
+ float f14 = *fsrc++ + 1.0f;
+ float f15 = *fsrc++ + 1.0f;
+
+ int *isrc = &int_src[level * num_vars];
+ int i00 = *isrc++ + 1;
+ int i01 = *isrc++ + 1;
+ int i02 = *isrc++ + 1;
+ int i03 = *isrc++ + 1;
+ int i04 = *isrc++ + 1;
+ int i05 = *isrc++ + 1;
+ int i06 = *isrc++ + 1;
+ int i07 = *isrc++ + 1;
+ int i08 = *isrc++ + 1;
+ int i09 = *isrc++ + 1;
+ int i10 = *isrc++ + 1;
+ int i11 = *isrc++ + 1;
+ int i12 = *isrc++ + 1;
+ int i13 = *isrc++ + 1;
+ int i14 = *isrc++ + 1;
+ int i15 = *isrc++ + 1;
+
+ try
+ {
+ if (level == 0)
+ throw throw_to;
+ else
+ foo (level - 1, throw_to);
+ }
+ catch (int i)
+ {
+ if (i == level)
+ {
+ float *fdest = float_dest;
+ *fdest++ = f00;
+ *fdest++ = f01;
+ *fdest++ = f02;
+ *fdest++ = f03;
+ *fdest++ = f04;
+ *fdest++ = f05;
+ *fdest++ = f06;
+ *fdest++ = f07;
+ *fdest++ = f08;
+ *fdest++ = f09;
+ *fdest++ = f10;
+ *fdest++ = f11;
+ *fdest++ = f12;
+ *fdest++ = f13;
+ *fdest++ = f14;
+ *fdest++ = f15;
+
+ int *idest = int_dest;
+ *idest++ = i00;
+ *idest++ = i01;
+ *idest++ = i02;
+ *idest++ = i03;
+ *idest++ = i04;
+ *idest++ = i05;
+ *idest++ = i06;
+ *idest++ = i07;
+ *idest++ = i08;
+ *idest++ = i09;
+ *idest++ = i10;
+ *idest++ = i11;
+ *idest++ = i12;
+ *idest++ = i13;
+ *idest++ = i14;
+ *idest++ = i15;
+ }
+ else
+ {
+ throw;
+ }
+ }
+ }
+
+ int main ()
+ {
+ for (int i = 0; i < depth * num_vars; i++)
+ {
+ int_src[i] = i * i;
+ float_src[i] = i * 2.0f;
+ }
+ for (int level = 0; level < depth; level++)
+ for (int throw_to = 0; throw_to <= level; throw_to++)
+ {
+ foo (level, throw_to);
+ float *fsrc = &float_src[throw_to * num_vars];
+ int *isrc = &int_src[throw_to * num_vars];
+ for (int i = 0; i < num_vars; i++)
+ {
+ if (int_dest[i] != isrc[i] + 1)
+ abort ();
+ if (float_dest[i] != fsrc[i] + 1.0f)
+ abort ();
+ }
+ }
+ exit (0);
+ }