This is a new test for the stack protection code that was added in V6 patch #4.
Along with the other patches, I have done bootstraps on a little endian power8
system, and there were no regressions in the test suite. I have built both
Spec 2006 and Spec 2017 with all of these patches installed using -mcpu=future,
and there were no failures. Can I check this into the trunk?
Note, I may have limited email access on October 17th and 18th, 2019.
2019-10-15 Michael Meissner <meiss...@linux.ibm.com>
* gcc/testsuite/gcc.target/powerpc/prefix-stack-protect.c: New
test to make sure -fstack-protect-strong works with prefixed
addressing.
Index: gcc/testsuite/gcc.target/powerpc/prefix-stack-protect.c
===================================================================
--- gcc/testsuite/gcc.target/powerpc/prefix-stack-protect.c (revision
277050)
+++ gcc/testsuite/gcc.target/powerpc/prefix-stack-protect.c (working copy)
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_prefixed_addr_ok } */
+/* { dg-options "-O2 -mdejagnu-cpu=future -fstack-protector-strong" } */
+
+/* Test that we can handle large stack frames with -fstack-protector-strong and
+ prefixed addressing. */
+
+extern long foo (char *);
+
+long
+bar (void)
+{
+ char buffer[0x20000];
+ return foo (buffer) + 1;
+}
+
+/* { dg-final { scan-assembler {\mpld\M} } } */
+/* { dg-final { scan-assembler {\mpstd\M} } } */
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
