Clear hardware capabilities for gcc.dg/vect/vect-simd-clone-*.c

	* gcc.dg/vect/vect.exp: Add clearcap_ldflags to DEFAULT_VECTCFLAGS
	if supported.

From-SVN: r206360

gcc/testsuite/ChangeLog

 2014-01-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
+	* gcc.dg/vect/vect.exp: Add clearcap_ldflags to DEFAULT_VECTCFLAGS
+	if supported.
+
+2014-01-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
 	* gcc.target/i386/avx512f-vcmppd-2.c: Add -std=c99.
 	Require c99_runtime.
 	* gcc.target/i386/avx512f-vcmpps-2.c: Likewise.

gcc/testsuite/gcc.dg/vect/vect.exp

@@ -41,6 +41,28 @@ if ![check_vect_support_and_set_flags] {
 # These flags are used for all targets.
 lappend DEFAULT_VECTCFLAGS "-ftree-vectorize" "-fno-vect-cost-model" "-fno-common"
 
+# If the linker used understands -M <mapfile>, pass it to clear hardware
+# capabilities set by the Sun assembler.
+# Try mapfile syntax v2 first which is the only way to clear hwcap_2 flags.
+set clearcap_ldflags "-Wl,-M,$srcdir/gcc.target/i386/clearcapv2.map"
+
+if ![check_no_compiler_messages mapfilev2 executable {
+    int main (void) { return 0; }
+} $clearcap_ldflags ] {
+    # If this doesn't work, fall back to the less capable v1 syntax.
+    set clearcap_ldflags "-Wl,-M,$srcdir/gcc.target/i386/clearcap.map"
+
+    if ![check_no_compiler_messages mapfile executable {
+	int main (void) { return 0; }
+    } $clearcap_ldflags ] {
+	unset clearcap_ldflags
+    }
+}
+
+if [info exists clearcap_ldflags] {
+    lappend DEFAULT_VECTCFLAGS $clearcap_ldflags
+}
+
 # Initialize `dg'.
 dg-init