[MIPS] Fix mips-ps-[57].c tests after cost model changes

[Richard Sandiford]

I could just have added an extra command-line option, but I went for
this instead.

Tested on mips64-linux-gnu and applied.

Richard


gcc/testsuite/
        * gcc.target/mips/mips-ps-5.c: Add alignment attributes.
        * gcc.target/mips/mips-ps-7.c: Likewise.

Index: gcc/testsuite/gcc.target/mips/mips-ps-5.c
===================================================================
--- gcc/testsuite/gcc.target/mips/mips-ps-5.c   2012-08-27 17:31:22.000000000 
+0100
+++ gcc/testsuite/gcc.target/mips/mips-ps-5.c   2013-10-19 18:12:17.462075229 
+0100
@@ -2,7 +2,9 @@
 /* { dg-options "-mpaired-single -mgp64 -ftree-vectorize" } */
 /* { dg-skip-if "requires vectorization" { *-*-* } { "-O0" "-Os" } { "" } } */
 
-extern float a[], b[], c[];
+extern float a[] __attribute__ ((aligned (8)));
+extern float b[] __attribute__ ((aligned (8)));
+extern float c[] __attribute__ ((aligned (8)));
 
 NOMIPS16 void
 foo (void)
Index: gcc/testsuite/gcc.target/mips/mips-ps-7.c
===================================================================
--- gcc/testsuite/gcc.target/mips/mips-ps-7.c   2012-08-27 17:31:22.000000000 
+0100
+++ gcc/testsuite/gcc.target/mips/mips-ps-7.c   2013-10-19 18:12:31.762186608 
+0100
@@ -3,7 +3,9 @@
 /* { dg-options "-mgp32 -mpaired-single -ftree-vectorize" } */
 /* { dg-skip-if "requires vectorization" { *-*-* } { "-O0" "-Os" } { "" } } */
 
-extern float a[], b[], c[];
+extern float a[] __attribute__ ((aligned (8)));
+extern float b[] __attribute__ ((aligned (8)));
+extern float c[] __attribute__ ((aligned (8)));
 
 NOMIPS16 void
 foo (void)