[PATCH][GCC][AARCH64] Use stdint integers in vect_su_add_sub.c

[Matthew Malcomson]

Fixing the ilp32 issue that Christophe found.

The existing testcase uses `long` to represent a 64 bit integer.
This breaks when compiled using the `-mabi=ilp32` flag.
We switch the use of int/long for int32_t/int64_t to avoid this problem
and show the requirement of a widening operation more clearly.

Ok for trunk?

gcc/testsuite/Changelog
2018-07-31  Matthew Malcomson  <matthew.malcomson@arm.com>

	* gcc.target/aarch64/simd/vect_su_add_sub.c: Use stdint types

-------------- next part --------------
diff --git a/gcc/testsuite/gcc.target/aarch64/simd/vect_su_add_sub.c b/gcc/testsuite/gcc.target/aarch64/simd/vect_su_add_sub.c
index 338da54f6281c90e1c6b1c59fa50d9b719005c77..e3a2d0175e75b20e309c9b734b747512e466fbb1 100644
--- a/gcc/testsuite/gcc.target/aarch64/simd/vect_su_add_sub.c
+++ b/gcc/testsuite/gcc.target/aarch64/simd/vect_su_add_sub.c
@@ -1,21 +1,24 @@
 /* { dg-do compile } */
 /* { dg-options "-O3" } */
 
+#include <stdint.h>
+#include <stdlib.h>
+
 /* Ensure we use the signed/unsigned extend vectorized add and sub
    instructions.  */
 #define N 1024
 
-int a[N];
-long c[N];
-long d[N];
-unsigned int ua[N];
-unsigned long uc[N];
-unsigned long ud[N];
+int32_t a[N];
+int64_t c[N];
+int64_t d[N];
+uint32_t ua[N];
+uint64_t uc[N];
+uint64_t ud[N];
 
 void
 add ()
 {
-  for (int i = 0; i < N; i++)
+  for (size_t i = 0; i < N; i++)
     d[i] = a[i] + c[i];
 }
 /* { dg-final { scan-assembler-times "\[ \t\]saddw2\[ \t\]+" 1 } } */
@@ -24,7 +27,7 @@ add ()
 void
 subtract ()
 {
-  for (int i = 0; i < N; i++)
+  for (size_t i = 0; i < N; i++)
     d[i] = c[i] - a[i];
 }
 /* { dg-final { scan-assembler-times "\[ \t\]ssubw2\[ \t\]+" 1 } } */
@@ -33,7 +36,7 @@ subtract ()
 void
 uadd ()
 {
-  for (int i = 0; i < N; i++)
+  for (size_t i = 0; i < N; i++)
     ud[i] = ua[i] + uc[i];
 }
 /* { dg-final { scan-assembler-times "\[ \t\]uaddw2\[ \t\]+" 1 } } */
@@ -42,7 +45,7 @@ uadd ()
 void
 usubtract ()
 {
-  for (int i = 0; i < N; i++)
+  for (size_t i = 0; i < N; i++)
     ud[i] = uc[i] - ua[i];
 }
 /* { dg-final { scan-assembler-times "\[ \t\]usubw2\[ \t\]+" 1 } } */