[PATCH,MIPS] Handle paired single test changes

[Matthew Fortune]

Hi Catherine,

I missed a couple of testsuite changes that are needed to deal with the
fallout of fixing the ABI issues for floating point vectors.  I had them
in my tree but forgot to post.  The ABI change for V2SF i.e. paired
single is a bug fix as the behaviour was unintended and violates the goal
of having FP64 a compatible ABI extension for o32.  The probability of
having code dependent on this corner case of the calling convention in
the wild is exceptionally low so I see no significant risk still.

The tests for paired single just need a little encouragement to still
produce the necessary instructions now that paired single is not returned
in registers.

Does it look OK to you?

Thanks,
Matthew

gcc/testsuite/

        * gcc.target/mips/mips-ps-type-2.c (move): Force generation
        of mov.ps.
        * gcc.target/mips/mips-ps-type.c (move): Likewise.
        (cond_move1): Simplify condition to force generation of
        mov[nz].ps.
        (cond_move2): Likewise.
---

diff --git a/gcc/testsuite/gcc.target/mips/mips-ps-type-2.c 
b/gcc/testsuite/gcc.target/mips/mips-ps-type-2.c
index fecc35b..ed5d6ee 100644
--- a/gcc/testsuite/gcc.target/mips/mips-ps-type-2.c
+++ b/gcc/testsuite/gcc.target/mips/mips-ps-type-2.c
@@ -32,6 +32,11 @@ NOMIPS16 v2sf init (float a, float b)
 /* Move between registers */
 NOMIPS16 v2sf move (v2sf a)
 {
+  register v2sf b __asm__("$f0") = a;
+  register v2sf c __asm__("$f2");
+  __asm__ __volatile__ ("" : "+f" (b));
+  c = b;
+  __asm__ __volatile__ ("" : : "f" (c));
   return a;
 }
 
diff --git a/gcc/testsuite/gcc.target/mips/mips-ps-type.c 
b/gcc/testsuite/gcc.target/mips/mips-ps-type.c
index d74d4b5..731649c 100644
--- a/gcc/testsuite/gcc.target/mips/mips-ps-type.c
+++ b/gcc/testsuite/gcc.target/mips/mips-ps-type.c
@@ -30,6 +30,11 @@ NOMIPS16 v2sf init (float a, float b)
 /* Move between registers */
 NOMIPS16 v2sf move (v2sf a)
 {
+  register v2sf b __asm__("$f0") = a;
+  register v2sf c __asm__("$f2");
+  __asm__ __volatile__ ("" : "+f" (b));
+  c = b;
+  __asm__ __volatile__ ("" : : "f" (c));
   return a;
 }
 
@@ -96,7 +101,7 @@ NOMIPS16 v2sf nmsub (v2sf a, v2sf b, v2sf c)
 /* Conditional Move */ 
 NOMIPS16 v2sf cond_move1 (v2sf a, v2sf b, long i)
 {
-  if (i > 0)
+  if (i != 0)
     return a;
   else
     return b;
@@ -105,7 +110,7 @@ NOMIPS16 v2sf cond_move1 (v2sf a, v2sf b, long i)
 /* Conditional Move */ 
 NOMIPS16 v2sf cond_move2 (v2sf a, v2sf b, int i)
 {
-  if (i > 0)
+  if (i != 0)
     return a;
   else
     return b;
-- 
2.2.1