[testsuite] [sparc] skip sparc-ret-1 with -mfix-ut699

Option -mfix-ut699 changes the set of instructions that can be placed
in the delay slot, preventing the expected insn placement.  Skip the
test if the option is present.


for  gcc/testsuite/ChangeLog

	* gcc.target/sparc/sparc-ret-1.c: Skip on -mfix-ut699.

gcc/testsuite/gcc.target/sparc/sparc-ret-1.c

@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-skip-if "no register windows" { *-*-* } { "-mflat" } { "" } } */
+/* { dg-skip-if "prevents expected asm" { *-*-* } { "-mfix-ut699" } { "" } } */
 /* { dg-require-effective-target ilp32 } */
 /* { dg-options "-mcpu=ultrasparc -O" } */