Add x86 tests for Intel CET implementation.

gcc/testsuite/

	* c-c++-common/attr-nocf-check-1.c: Shorten a cheking message.
	* c-c++-common/attr-nocf-check-3.c: Likewise.
	* c-c++-common/fcf-protection-1.c: Add x86 specific message.
	* c-c++-common/fcf-protection-2.c: Likewise.
	* c-c++-common/fcf-protection-3.c: Likewise.
	* c-c++-common/fcf-protection-5.c: Likewise.
	* c-c++-common/attr-nocf-check-1a.c: New test.
	* c-c++-common/attr-nocf-check-3a.c: Likewise.
	* g++.dg/cet-notrack-1.C: Likewise.
	* gcc.target/i386/cet-intrin-1.c: Likewise.
	* gcc.target/i386/cet-intrin-10.c: Likewise.
	* gcc.target/i386/cet-intrin-2.c: Likewise.
	* gcc.target/i386/cet-intrin-3.c: Likewise.
	* gcc.target/i386/cet-intrin-4.c: Likewise.
	* gcc.target/i386/cet-intrin-5.c: Likewise.
	* gcc.target/i386/cet-intrin-6.c: Likewise.
	* gcc.target/i386/cet-intrin-7.c: Likewise.
	* gcc.target/i386/cet-intrin-8.c: Likewise.
	* gcc.target/i386/cet-intrin-9.c: Likewise.
	* gcc.target/i386/cet-label.c: Likewise.
	* gcc.target/i386/cet-notrack-1a.c: Likewise.
	* gcc.target/i386/cet-notrack-1b.c: Likewise.
	* gcc.target/i386/cet-notrack-2a.c: Likewise.
	* gcc.target/i386/cet-notrack-2b.c: Likewise.
	* gcc.target/i386/cet-notrack-3.c: Likewise.
	* gcc.target/i386/cet-notrack-4a.c: Likewise.
	* gcc.target/i386/cet-notrack-4b.c: Likewise.
	* gcc.target/i386/cet-notrack-5a.c: Likewise.
	* gcc.target/i386/cet-notrack-5b.c: Likewise.
	* gcc.target/i386/cet-notrack-6a.c: Likewise.
	* gcc.target/i386/cet-notrack-6b.c: Likewise.
	* gcc.target/i386/cet-notrack-7.c: Likewise.
	* gcc.target/i386/cet-property-1.c: Likewise.
	* gcc.target/i386/cet-property-2.c: Likewise.
	* gcc.target/i386/cet-rdssp-1.c: Likewise.
	* gcc.target/i386/cet-sjlj-1.c: Likewise.
	* gcc.target/i386/cet-sjlj-2.c: Likewise.
	* gcc.target/i386/cet-sjlj-3.c: Likewise.
	* gcc.target/i386/cet-switch-1.c: Likewise.
	* gcc.target/i386/cet-switch-2.c: Likewise.
	* lib/target-supports.exp (check_effective_target_cet): New
	proc.

From-SVN: r253979

gcc/testsuite/ChangeLog

+2017-10-21  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>
+
+	* c-c++-common/attr-nocf-check-1.c: Shorten a cheking message.
+	* c-c++-common/attr-nocf-check-3.c: Likewise.
+	* c-c++-common/fcf-protection-1.c: Add x86 specific message.
+	* c-c++-common/fcf-protection-2.c: Likewise.
+	* c-c++-common/fcf-protection-3.c: Likewise.
+	* c-c++-common/fcf-protection-5.c: Likewise.
+	* c-c++-common/attr-nocf-check-1a.c: New test.
+	* c-c++-common/attr-nocf-check-3a.c: Likewise.
+	* g++.dg/cet-notrack-1.C: Likewise.
+	* gcc.target/i386/cet-intrin-1.c: Likewise.
+	* gcc.target/i386/cet-intrin-10.c: Likewise.
+	* gcc.target/i386/cet-intrin-2.c: Likewise.
+	* gcc.target/i386/cet-intrin-3.c: Likewise.
+	* gcc.target/i386/cet-intrin-4.c: Likewise.
+	* gcc.target/i386/cet-intrin-5.c: Likewise.
+	* gcc.target/i386/cet-intrin-6.c: Likewise.
+	* gcc.target/i386/cet-intrin-7.c: Likewise.
+	* gcc.target/i386/cet-intrin-8.c: Likewise.
+	* gcc.target/i386/cet-intrin-9.c: Likewise.
+	* gcc.target/i386/cet-label.c: Likewise.
+	* gcc.target/i386/cet-notrack-1a.c: Likewise.
+	* gcc.target/i386/cet-notrack-1b.c: Likewise.
+	* gcc.target/i386/cet-notrack-2a.c: Likewise.
+	* gcc.target/i386/cet-notrack-2b.c: Likewise.
+	* gcc.target/i386/cet-notrack-3.c: Likewise.
+	* gcc.target/i386/cet-notrack-4a.c: Likewise.
+	* gcc.target/i386/cet-notrack-4b.c: Likewise.
+	* gcc.target/i386/cet-notrack-5a.c: Likewise.
+	* gcc.target/i386/cet-notrack-5b.c: Likewise.
+	* gcc.target/i386/cet-notrack-6a.c: Likewise.
+	* gcc.target/i386/cet-notrack-6b.c: Likewise.
+	* gcc.target/i386/cet-notrack-7.c: Likewise.
+	* gcc.target/i386/cet-property-1.c: Likewise.
+	* gcc.target/i386/cet-property-2.c: Likewise.
+	* gcc.target/i386/cet-rdssp-1.c: Likewise.
+	* gcc.target/i386/cet-sjlj-1.c: Likewise.
+	* gcc.target/i386/cet-sjlj-2.c: Likewise.
+	* gcc.target/i386/cet-sjlj-3.c: Likewise.
+	* gcc.target/i386/cet-switch-1.c: Likewise.
+	* gcc.target/i386/cet-switch-2.c: Likewise.
+	* lib/target-supports.exp (check_effective_target_cet): New
+	proc.
+
 2017-10-20  Jan Hubicka  <hubicka@ucw.cz>
 
 	* gcc.target/i386/pr79683.c: Disable costmodel.

gcc/testsuite/c-c++-common/attr-nocf-check-1.c

 /* { dg-do compile } */
 
-int func (int) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
-int (*fptr) (int) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
-typedef void (*nocf_check_t) (void) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+int func (int) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored" } */
+int (*fptr) (int) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored" } */
+typedef void (*nocf_check_t) (void) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored" } */
 
 int
 foo1 (int arg)
@@ -13,7 +13,7 @@ foo1 (int arg)
 void
 foo2 (void (*foo) (void))
 {
-  void (*func) (void) __attribute__((nocf_check)) = foo; /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+  void (*func) (void) __attribute__((nocf_check)) = foo; /* { dg-warning "'nocf_check' attribute ignored" } */
   func ();
 }
 
@@ -24,7 +24,7 @@ foo3 (nocf_check_t foo)
 }
 
 void
-foo4 (void (*foo) (void) __attribute__((nocf_check))) /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+foo4 (void (*foo) (void) __attribute__((nocf_check))) /* { dg-warning "'nocf_check' attribute ignored" } */
 {
   foo ();
 }

gcc/testsuite/c-c++-common/attr-nocf-check-1a.c

+/* { dg-do compile } */
+/* { dg-options "-fcf-protection -mcet" } */
+
+int func (int) __attribute__ ((nocf_check));
+int (*fptr) (int) __attribute__ ((nocf_check));
+typedef void (*nocf_check_t) (void) __attribute__ ((nocf_check));
+
+int
+foo1 (int arg)
+{
+  return func (arg) + fptr (arg);
+}
+
+void
+foo2 (void (*foo) (void))
+{
+  void (*func) (void) __attribute__((nocf_check)) = foo; /* { dg-warning "incompatible pointer type" "" { target c } } */
+							 /* { dg-error "invalid conversion" "" { target c++ } .-1 } */
+  func ();
+}
+
+void
+foo3 (nocf_check_t foo)
+{
+  foo ();
+}
+
+void
+foo4 (void (*foo) (void) __attribute__((nocf_check)))
+{
+  foo ();
+}

gcc/testsuite/c-c++-common/attr-nocf-check-3.c

 /* { dg-do compile } */
 
-int  foo (void) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
-void (*foo1) (void) __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+int  foo (void) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored" } */
+void (*foo1) (void) __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored" } */
 void (*foo2) (void);
 
 int

gcc/testsuite/c-c++-common/attr-nocf-check-3a.c

+/* { dg-do compile } */
+/* { dg-options "-fcf-protection -mcet" } */
+
+int  foo (void) __attribute__ ((nocf_check));
+void (*foo1) (void) __attribute__((nocf_check));
+void (*foo2) (void);
+
+int __attribute__ ((nocf_check))
+foo (void) /* The function's address is not tracked.  */
+{
+  /* This call site is not tracked for
+     control-flow instrumentation.  */
+  (*foo1)();
+
+  foo1 = foo2; /* { dg-warning "incompatible pointer type" "" { target c } } */
+	       /* { dg-error "invalid conversion" "" { target c++ } .-1 } */
+  /* This call site is still not tracked for
+     control-flow instrumentation.  */
+  (*foo1)();
+
+  /* This call site is tracked for
+     control-flow instrumentation.  */
+  (*foo2)();
+
+  foo2 = foo1; /* { dg-warning "incompatible pointer type" "" { target c } } */
+	       /* { dg-error "invalid conversion" "" { target c++ } .-1 } */
+  /* This call site is still tracked for
+     control-flow instrumentation.  */
+  (*foo2)();
+
+  return 0;
+}

gcc/testsuite/c-c++-common/fcf-protection-1.c

 /* { dg-do compile } */
 /* { dg-options "-fcf-protection=full" } */
-/* { dg-error "'-fcf-protection=full' is not supported for this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
+/* { dg-error "'-fcf-protection=full' requires CET support on this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
 /* { dg-error "'-fcf-protection=full' is not supported for this target" "" { target { ! "i?86-*-* x86_64-*-*" } } 0 } */

gcc/testsuite/c-c++-common/fcf-protection-2.c

 /* { dg-do compile } */
 /* { dg-options "-fcf-protection=branch" } */
-/* { dg-error "'-fcf-protection=branch' is not supported for this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
+/* { dg-error "'-fcf-protection=branch' requires CET support on this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
 /* { dg-error "'-fcf-protection=branch' is not supported for this target" "" { target { ! "i?86-*-* x86_64-*-*" } } 0 } */

gcc/testsuite/c-c++-common/fcf-protection-3.c

 /* { dg-do compile } */
 /* { dg-options "-fcf-protection=return" } */
-/* { dg-error "'-fcf-protection=return' is not supported for this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
+/* { dg-error "'-fcf-protection=return' requires CET support on this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
 /* { dg-error "'-fcf-protection=return' is not supported for this target" "" { target { ! "i?86-*-* x86_64-*-*" } } 0 } */

gcc/testsuite/c-c++-common/fcf-protection-5.c

 /* { dg-do compile } */
 /* { dg-options "-fcf-protection" } */
-/* { dg-error "'-fcf-protection=full' is not supported for this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
+/* { dg-error "'-fcf-protection=full' requires CET support on this target" "" { target { "i?86-*-* x86_64-*-*" } } 0 } */
 /* { dg-error "'-fcf-protection=full' is not supported for this target" "" { target { ! "i?86-*-* x86_64-*-*" } } 0 } */

gcc/testsuite/g++.dg/cet-notrack-1.C

+/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-fcf-protection -mcet" } */
+/* { dg-final { scan-assembler "endbr32|endbr64" } } */
+/* { dg-final { scan-assembler-times "\tcall\[ \t]+puts" 2 } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 1 } } */
+#include <stdio.h>
+
+struct A {
+virtual int foo() __attribute__((nocf_check)) { return 42; }
+};
+
+struct B : A {
+int foo() __attribute__((nocf_check)) { return 73; }
+};
+
+int main() {
+B b;
+A& a = b;
+int (A::*amem) () __attribute__((nocf_check)) = &A::foo; // take address
+if ((a.*amem)() == 73) // use the address
+  printf("pass\n");
+else
+  printf("fail\n");
+return 0;
+}

gcc/testsuite/gcc.target/i386/cet-intrin-10.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -mcet" } */
+/* { dg-final { scan-assembler-times "clrssbsy" 1 } } */
+
+#include <immintrin.h>
+
+void f2 (void *__B)
+{
+  _clrssbsy (__B);
+}

gcc/testsuite/gcc.target/i386/cet-intrin-3.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 2 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 4 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler "rdsspd|incsspd\[ \t]+(%|)eax" { target ia32 } } } */
+/* { dg-final { scan-assembler "rdssp\[dq]\[ \t]+(%|)\[re]ax" { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler "incssp\[dq]\[ \t]+(%|)\[re]di" { target { ! ia32 } } } } */
+
+#include <immintrin.h>
+
+unsigned int f1 ()
+{
+  unsigned int x = 0;
+  return _rdsspd (x);
+}
+
+void f3 (unsigned int _a)
+{
+  _incsspd (_a);
+}
+
+#ifdef __x86_64__
+unsigned long long f2 ()
+{
+  unsigned long long x = 0;
+  return _rdsspq (x);
+}
+
+void f4 (unsigned int _a)
+{
+  _incsspq (_a);
+}
+#endif

gcc/testsuite/gcc.target/i386/cet-intrin-4.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mshstk" } */
+/* { dg-final { scan-assembler "rdsspd|incsspd\[ \t]+(%|)eax" { target ia32 } } } */
+/* { dg-final { scan-assembler "rdssp\[dq]\[ \t]+(%|)\[re]ax"  { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler "incssp\[dq]\[ \t]+(%|)\[re]di" { target { ! ia32 } } } } */
+
+#include <immintrin.h>
+
+unsigned int f1 ()
+{
+  unsigned int x = 0;
+  return _rdsspd (x);
+}
+
+void f3 (unsigned int _a)
+{
+  _incsspd (_a);
+}
+
+#ifdef __x86_64__
+unsigned long long f2 ()
+{
+  unsigned long long x = 0;
+  return _rdsspq (x);
+}
+
+void f4 (unsigned int _a)
+{
+  _incsspq (_a);
+}
+#endif

gcc/testsuite/gcc.target/i386/cet-intrin-5.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -mcet" } */
+/* { dg-final { scan-assembler-times "saveprevssp" 1 } } */
+
+#include <immintrin.h>
+
+void f2 (void)
+{
+  _saveprevssp ();
+}

gcc/testsuite/gcc.target/i386/cet-intrin-6.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -mcet" } */
+/* { dg-final { scan-assembler-times "rstorssp" 1 } } */
+
+#include <immintrin.h>
+
+void f2 (void *__B)
+{
+  _rstorssp (__B);
+}

gcc/testsuite/gcc.target/i386/cet-intrin-7.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -mcet" } */
+/* { dg-final { scan-assembler-times "wrssd" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "wrss\[d|q]" 2 { target lp64 } } } */
+
+#include <immintrin.h>
+
+void f1 (unsigned int __A, void *__B)
+{
+  _wrssd (__A, __B);
+}
+
+#ifdef __x86_64__
+void f2 (unsigned long long __A, void *__B)
+{
+  _wrssq (__A, __B);
+}
+#endif

gcc/testsuite/gcc.target/i386/cet-intrin-8.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -mcet" } */
+/* { dg-final { scan-assembler-times "wrussd" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "wruss\[d|q]" 2 { target lp64 } } } */
+
+#include <immintrin.h>
+
+void f1 (unsigned int __A, void *__B)
+{
+  _wrussd (__A, __B);
+}
+
+#ifdef __x86_64__
+void f2 (unsigned long long __A, void *__B)
+{
+  _wrussq (__A, __B);
+}
+#endif

gcc/testsuite/gcc.target/i386/cet-intrin-9.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -mcet" } */
+/* { dg-final { scan-assembler-times "setssbsy" 1 } } */
+
+#include <immintrin.h>
+
+void f2 (void)
+{
+  _setssbsy ();
+}

gcc/testsuite/gcc.target/i386/cet-label.c

+/* Verify that CET works.  */
+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 3 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 3 { target { ! ia32 } } } } */
+
+int func (int arg)
+{
+  static void *array[] = { &&foo, &&bar };
+
+  goto *array[arg];
+foo:
+  return arg*111;
+bar:
+  return arg*777;
+}

gcc/testsuite/gcc.target/i386/cet-notrack-1a.c

+/* { dg-do compile } */
+/* { dg-options "-O0 -fcf-protection=none -mno-cet" } */
+/* { dg-final { scan-assembler-not "endbr" } } */
+/* { dg-final { scan-assembler-not "notrack call\[ \t]+" } } */
+
+int func (int a) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+int (*fptr) (int a) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+
+int foo (int arg)
+{
+  int a, b;
+  a = func (arg);
+  b = (*fptr) (arg);
+  return a+b;
+}
+
+int __attribute__ ((nocf_check))
+func (int arg)
+{ /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+  int (*fptrl) (int a) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+  return arg*(*fptrl)(arg);
+}

gcc/testsuite/gcc.target/i386/cet-notrack-1b.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 2 } } */
+
+int func (int a) __attribute__ ((nocf_check));
+int (*fptr) (int a) __attribute__ ((nocf_check));
+
+int foo (int arg)
+{
+int a, b;
+  a = func (arg);
+  b = (*fptr) (arg);
+  return a+b;
+}
+
+int __attribute__ ((nocf_check))
+func (int arg)
+{
+int (*fptrl) (int a) __attribute__ ((nocf_check));
+  return arg*(*fptrl)(arg);
+}

gcc/testsuite/gcc.target/i386/cet-notrack-2a.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 1 } } */
+
+void
+bar (void (*foo) (void))
+{
+  void (*func) (void) __attribute__((nocf_check)) = foo; /* { dg-warning "incompatible pointer type" } */
+  func ();
+}

gcc/testsuite/gcc.target/i386/cet-notrack-2b.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "notrack jmp\[ \t]+" 1 } } */
+
+void
+bar (void (*foo) (void))
+{
+  void (*func) (void) __attribute__((nocf_check)) = foo; /* { dg-warning "incompatible pointer type" } */
+  func ();
+}

gcc/testsuite/gcc.target/i386/cet-notrack-3.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 1 } } */
+
+typedef void (*func_t) (void) __attribute__((nocf_check));
+extern func_t func;
+
+void
+bar (void)
+{
+  func ();
+}

gcc/testsuite/gcc.target/i386/cet-notrack-4a.c

+/* { dg-do compile } */
+/* { dg-options "-fcf-protection=none -mno-cet" } */
+
+int var1 __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute only applies to function types" } */
+int *var2 __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute only applies to function types" } */
+void (**var3) (void) __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute only applies to function types" } */

gcc/testsuite/gcc.target/i386/cet-notrack-4b.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+
+int var1 __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute only applies to function types" } */
+int *var2 __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute only applies to function types" } */
+void (**var3) (void) __attribute__((nocf_check)); /* { dg-warning "'nocf_check' attribute only applies to function types" } */

gcc/testsuite/gcc.target/i386/cet-notrack-5a.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-not "\tcall\[ \t]+" } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 1 } } */
+
+int (*fptr) (int) __attribute__ ((nocf_check));
+
+int
+foo (int arg)
+{
+  int a;
+  a = (*fptr) (arg); /* notrack call.  */
+  return arg+a;
+}

gcc/testsuite/gcc.target/i386/cet-notrack-5b.c

+/* Check the attribute do not proparate through assignment.  */
+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "\tcall\[ \t]+" 1 } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 1 } } */
+
+int (*fptr) (int) __attribute__ ((nocf_check));
+int (*fptr1) (int);
+
+int
+foo (int arg)
+{
+  int a;
+  a = (*fptr) (arg); /* non-checked call.  */
+  arg += a;
+  fptr1 = fptr; /* { dg-warning "incompatible pointer type" } */ 
+  a = (*fptr1) (arg); /* checked call.  */
+  return arg+a;
+}

gcc/testsuite/gcc.target/i386/cet-notrack-6a.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "\t(?:call|jmp)\[ \t]+.*foo" 1 } } */
+/* { dg-final { scan-assembler-not "notrack call\[ \t]+" } } */
+
+int foo (int arg);
+
+int func (int arg)
+{
+  int (*fptrl) (int a) __attribute__ ((nocf_check)) = foo; /* { dg-warning "incompatible pointer type" } */
+
+  return (*fptrl)(arg);
+}

gcc/testsuite/gcc.target/i386/cet-notrack-6b.c

+/* { dg-do compile } */
+/* { dg-options "-O0 -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-not "\tcall\[ \t]+" } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+" 1 } } */
+
+int foo (int arg);
+
+int func (int arg)
+{
+  int (*fptrl) (int a) __attribute__ ((nocf_check)) = foo; /* { dg-warning "incompatible pointer type" } */
+
+  return (*fptrl)(arg);  /* notrack call.  */
+}

gcc/testsuite/gcc.target/i386/cet-notrack-7.c

+/* Check the notrack prefix is not generated for direct call.  */
+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "notrack call\[ \t]+.*foo" 0 } } */
+/* { dg-final { scan-assembler-times "\tcall\[ \t]+.*foo" 1 } } */
+
+extern void foo (void) __attribute__((nocf_check));
+
+void
+bar (void)
+{
+  foo ();
+}

gcc/testsuite/gcc.target/i386/cet-notrack-icf-1.c

+/* Verify nocf_check functions are not ICF optimized.  */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+/* { dg-final { scan-assembler-not "endbr" } } */
+/* { dg-final { scan-assembler-not "fn3:" } } */
+/* { dg-final { scan-assembler "set\[ \t]+fn2,fn1" } } */
+/* { dg-final { scan-assembler "set\[ \t]+fn3,fn1" } } */
+
+static __attribute__((noinline)) int
+fn1 (int x)
+{
+  return x + 12;
+}
+
+static __attribute__((noinline)) int
+fn2 (int x)
+{
+  return x + 12;
+}
+
+static __attribute__((noinline, nocf_check)) int
+fn3 (int x)
+{ /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+  return x + 12;
+}
+
+int
+fn4 (int x)
+{
+  return fn1 (x) + fn2 (x) + fn3 (x);
+}

gcc/testsuite/gcc.target/i386/cet-notrack-icf-2.c

+/* Verify nocf_check functions are not ICF optimized.  */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler "endbr" } } */
+/* { dg-final { scan-assembler "fn3:" } } */
+/* { dg-final { scan-assembler "set\[ \t]+fn2,fn1" } } */
+
+static __attribute__((noinline)) int
+fn1 (int x)
+{
+  return x + 12;
+}
+
+static __attribute__((noinline)) int
+fn2 (int x)
+{
+  return x + 12;
+}
+
+static __attribute__((noinline, nocf_check)) int
+fn3 (int x)
+{
+  return x + 12;
+}
+
+int
+fn4 (int x)
+{
+  return fn1 (x) + fn2 (x) + fn3 (x);
+}

gcc/testsuite/gcc.target/i386/cet-notrack-icf-3.c

+/* Verify nocf_check function calls are not ICF optimized.  */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+/* { dg-final { scan-assembler-not "endbr" } } */
+/* { dg-final { scan-assembler-not "fn2:" } } */
+/* { dg-final { scan-assembler "set\[ \t]+fn2,fn1" } } */
+/* { dg-final { scan-assembler "set\[ \t]+fn3,fn1" } } */
+
+int (*foo)(int);
+
+typedef int (*type1_t) (int) __attribute__ ((nocf_check)); /* { dg-warning "'nocf_check' attribute ignored. Use -fcf-protection option to enable it" } */
+typedef int (*type2_t) (int);
+
+static __attribute__((noinline)) int
+fn1 (int x)
+{
+  return ((type2_t)foo)(x + 12);
+}
+
+static __attribute__((noinline)) int
+fn2 (int x)
+{
+  return ((type1_t)foo)(x + 12);
+}
+
+static __attribute__((noinline)) int
+fn3 (int x)
+{
+  return ((type2_t)foo)(x + 12);
+}
+
+int
+fn4 (int x)
+{
+  return fn1 (x) + fn2 (x) + fn3 (x);
+}

gcc/testsuite/gcc.target/i386/cet-notrack-icf-4.c

+/* Verify nocf_check function calls are not ICF optimized.  */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler "endbr" } } */
+/* { dg-final { scan-assembler "fn2:" } } */
+/* { dg-final { scan-assembler "set\[ \t]+fn3,fn1" } } */
+
+int (*foo)(int);
+
+typedef int (*type1_t) (int) __attribute__ ((nocf_check));
+typedef int (*type2_t) (int);
+
+static __attribute__((noinline)) int
+fn1 (int x)
+{
+  return ((type2_t)foo)(x + 12);
+}
+
+static __attribute__((noinline)) int
+fn2 (int x)
+{
+  return ((type1_t)foo)(x + 12);
+}
+
+static __attribute__((noinline)) int
+fn3 (int x)
+{
+  return ((type2_t)foo)(x + 12);
+}
+
+int
+fn4 (int x)
+{
+  return fn1 (x) + fn2 (x) + fn3 (x);
+}

gcc/testsuite/gcc.target/i386/cet-property-1.c

+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-fcf-protection -mcet" } */
+/* { dg-final { scan-assembler ".note.gnu.property" } } */
+
+extern void foo (void);
+
+void
+bar (void)
+{
+  foo ();
+}

gcc/testsuite/gcc.target/i386/cet-property-2.c

+/* { dg-do compile } */
+/* { dg-options "-mcet" } */
+/* { dg-final { scan-assembler-not ".note.gnu.property" } } */
+
+extern void foo (void);
+
+void
+bar (void)
+{
+  foo ();
+}

gcc/testsuite/gcc.target/i386/cet-rdssp-1.c

+/* { dg-do run { target cet } } */
+/* { dg-options "-O2 -fcf-protection -mcet" } */
+
+void _exit(int status) __attribute__ ((__noreturn__));
+
+#ifdef __x86_64__
+# define incssp(x) __builtin_ia32_incsspq (x)
+# define rdssp(x) __builtin_ia32_rdsspq (x)
+#else
+# define incssp(x) __builtin_ia32_incsspd (x)
+# define rdssp(x) __builtin_ia32_rdsspd (x)
+#endif
+
+static void
+__attribute__ ((noinline, noclone))
+test (unsigned long frames)
+{
+  unsigned long ssp = 0;
+  ssp = rdssp (ssp);
+  if (ssp != 0)
+    {
+      unsigned long tmp = frames;
+      while (tmp > 255)
+	{
+	  incssp (tmp);
+	  tmp -= 255;
+	}
+      incssp (tmp);
+    }
+  /* We must call _exit since shadow stack is incorrect now.  */
+  _exit (0);
+}
+
+int
+main ()
+{
+  test (1);
+  return 0;
+}

gcc/testsuite/gcc.target/i386/cet-sjlj-1.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 4 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 4 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "rdssp\[dq]" 2 } } */
+/* { dg-final { scan-assembler-times "incssp\[dq]" 1 } } */
+
+/* Based on gcc.dg/setjmp-3.c.  */
+
+void *buf[5];
+
+extern void abort (void);
+
+void raise0(void)
+{
+  __builtin_longjmp (buf, 1);
+}
+
+int execute(int cmd)
+{
+  int last = 0;
+
+  if (__builtin_setjmp (buf) == 0)
+    while (1)
+      {
+	last = 1;
+	raise0 ();
+      }
+
+  if (last == 0)
+    return 0;
+  else
+    return cmd;
+}
+
+int main(void)
+{
+  if (execute (1) == 0)
+    abort ();
+
+  return 0;
+}

gcc/testsuite/gcc.target/i386/cet-sjlj-2.c

+/* { dg-do run { target cet } } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+
+#include "cet-sjlj-1.c"

gcc/testsuite/gcc.target/i386/cet-sjlj-3.c

+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 4 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 4 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "call	_setjmp" 1 } } */
+/* { dg-final { scan-assembler-times "call	longjmp" 1 } } */
+
+#include <stdio.h>
+#include <setjmp.h>
+
+jmp_buf buf;
+int bar (int);
+
+int
+foo (int i)
+{
+  int j = i * 11;
+
+  if (!setjmp (buf))
+    {
+      j += 33;
+      printf ("After setjmp: j = %d\n", j);
+      bar (j);
+    }
+
+  return j + i;
+}
+
+int
+bar (int i)
+{
+int j = i;
+
+  j -= 111;
+  printf ("In longjmp: j = %d\n", j);
+  longjmp (buf, 1);
+
+  return j;
+}
+
+int
+main ()
+{
+  foo (10);
+  return 0;
+}

gcc/testsuite/gcc.target/i386/cet-switch-1.c

+/* Verify that CET works.  */
+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet" } */
+/* { dg-final { scan-assembler-times "endbr32" 1 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 1 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "notrack jmp\[ \t]+\[*]" 1 } } */
+
+void func2 (int);
+
+int func1 (int arg)
+{
+  switch (arg)
+  {
+    case 1: func2 (arg*100);
+    case 2: func2 (arg*300);
+    case 5: func2 (arg*500);
+    case 8: func2 (arg*700);
+    case 7: func2 (arg*900);
+    case -1: func2 (arg*-100);
+    case -2: func2 (arg*-300);
+    case -5: func2 (arg*-500);
+    case -7: func2 (arg*-700);
+    case -9: func2 (arg*-900);
+  }
+  return 0;
+}

gcc/testsuite/gcc.target/i386/cet-switch-2.c

+/* Verify that CET works.  */
+/* { dg-do compile } */
+/* { dg-options "-O -fcf-protection -mcet -mcet-switch" } */
+/* { dg-final { scan-assembler-times "endbr32" 12 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "endbr64" 12 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "\[ \t]+jmp\[ \t]+\[*]" 1 } } */
+
+void func2 (int);
+
+int func1 (int arg)
+{
+  switch (arg)
+  {
+    case 1: func2 (arg*100);
+    case 2: func2 (arg*300);
+    case 5: func2 (arg*500);
+    case 8: func2 (arg*700);
+    case 7: func2 (arg*900);
+    case -1: func2 (arg*-100);
+    case -2: func2 (arg*-300);
+    case -5: func2 (arg*-500);
+    case -7: func2 (arg*-700);
+    case -9: func2 (arg*-900);
+  }
+  return 0;
+}

gcc/testsuite/lib/target-supports.exp

@@ -8923,3 +8923,16 @@ proc check_effective_target_callee_realigns_stack { } {
   }
   return 0
 }
+
+# Return 1 if CET instructions can be compiled.
+proc check_effective_target_cet { } {
+    if { !([istarget i?86-*-*] || [istarget x86_64-*-*]) } {
+	return 0
+    }
+    return [check_no_compiler_messages cet object {
+	void foo (void)
+	{
+	  asm ("setssbsy");
+	}
+    } "-O2" ]
+}