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Add target selectors to slp-37.c (PR87078)


This test was failing for Power 7 due to the lack of hw support
for unaligned accesses.

Tested on aarch64-linux-gnu, x86_64-linux-gnu and powerpc64le-linux-gnu.
OK to install?

Richard


2018-08-28  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
	PR testsuite/87078
	* gcc.dg/vect/slp-37.c: Restrict scan tests to vect_hw_misalign.

Index: gcc/testsuite/gcc.dg/vect/slp-37.c
===================================================================
--- gcc/testsuite/gcc.dg/vect/slp-37.c	2018-08-22 13:58:57.492110344 +0100
+++ gcc/testsuite/gcc.dg/vect/slp-37.c	2018-08-28 11:26:10.178673982 +0100
@@ -58,5 +58,5 @@ int main (void)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect"  } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_hw_misalign } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target vect_hw_misalign } } } */


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