relax aarch64 stack-clash tests depedence on alloca.h

2020-01-06  Olivier Hainque  <hainque@adacore.com>
	Alexandre Oliva  <oliva@adacore.com>

	* gcc.target/aarch64/stack-check-alloca.h: Remove
	#include alloca.h. #define alloca __builtin_alloca
	instead.
	* gcc.target/aarch64/stack-check-alloca-1.c: Add
	{ dg-require-effective-target alloca }.
	* gcc.target/aarch64/stack-check-alloca-2.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-3.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-4.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-5.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-6.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-7.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-8.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-9.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-10.c: Likewise.

Co-Authored-By: Alexandre Oliva <oliva@adacore.com>

From-SVN: r280010

gcc/testsuite/ChangeLog

+2020-01-08  Olivier Hainque  <hainque@adacore.com>
+            Alexandre Oliva  <oliva@adacore.com>
+
+	* gcc.target/aarch64/stack-check-alloca.h: Remove
+	#include alloca.h. #define alloca __builtin_alloca
+	instead.
+	* gcc.target/aarch64/stack-check-alloca-1.c: Add
+	{ dg-require-effective-target alloca }.
+	* gcc.target/aarch64/stack-check-alloca-2.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-3.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-4.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-5.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-6.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-7.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-8.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-9.c: Likewise.
+	* gcc.target/aarch64/stack-check-alloca-10.c: Likewise.
+
 2020-01-08  Martin Liska  <mliska@suse.cz>
 
 	* gcc.dg/ipa/ipa-icf-1.c: Update expected scanned output.

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-1.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE y
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-10.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 127.5 * 64 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-2.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 0
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-3.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 100
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-4.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 2 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-5.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 63 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-6.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 63.5 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-7.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 64 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-8.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 65 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca-9.c

 /* { dg-do compile } */
 /* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
+/* { dg-require-effective-target alloca } */
 
 #define SIZE 127 * 64 * 1024
 #include "stack-check-alloca.h"

gcc/testsuite/gcc.target/aarch64/stack-check-alloca.h

-#include <alloca.h>
+
+/* Avoid inclusion of alloca.h, unavailable on some systems.  */
+#define alloca __builtin_alloca
 
 __attribute__((noinline, noipa))
 void g (char* ptr, int y)
@@ -10,4 +12,4 @@ void f_caller (int y)
 {
   char* pStr = alloca(SIZE);
   g (pStr, y);
-}
\ No newline at end of file
+}