re PR rtl-optimization/46226 (asm goto may leave stack pointer invalid)

PR rtl-opt/46226
Move test case to x86 test directory.

From-SVN: r166069

gcc/testsuite/gcc.dg/pr46226.c → gcc/testsuite/gcc.target/i386/pr46226.c

 /* { dg-do run } */
-/* { dg-options "-Os -fomit-frame-pointer" } */
-/* { dg-options "-Os -fomit-frame-pointer -mno-accumulate-outgoing-args -fno-asynchronous-unwind-tables" { target { i?86-*-* x86_64-*-* } } } */
+/* { dg-options "-Os -fomit-frame-pointer -mno-accumulate-outgoing-args -fno-asynchronous-unwind-tables" } */
 
 extern void abort(void);