RS6000 Allow builtin initialization regardless of mask

Disable the code that limits initialization of builtins based
on the rs6000_builtin_mask.  This allows all built-ins to be
properly referenced when building code using #pragma for cpu
targets newer than what was specified by the -mcpu default.
The use of built-ins is still properly limited by logic within
altivec_resolve_overloaded_builtin().

2020-03-30  Will Schmidt  <will_schmidt@vnet.ibm.com>

gcc/
    * config/rs6000/rs6000-call.c altivec_init_builtins(): Remove code
    to skip defining builtins based on builtin_mask.

gcc/testsuite/
    * gcc.target/powerpc/pragma_power6.c: New.
    * gcc.target/powerpc/pragma_power7.c: New.
    * gcc.target/powerpc/pragma_power8.c: New.
    * gcc.target/powerpc/pragma_power9.c: New.
    * gcc.target/powerpc/pragma_misc9.c: New.
    * gcc.target/powerpc/vsu/vec-all-nez-7.c: Update error message.
    * gcc.target/powerpc/vsu/vec-any-eqz-7.c: Update error message.

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2020-03-30  Will Schmidt  <will_schmidt@vnet.ibm.com>
+
+	* config/rs6000/rs6000-call.c altivec_init_builtins(): Remove code
+	to skip defining builtins based on builtin_mask.
+
 2020-03-30  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/94343

gcc/config/rs6000/rs6000-call.c

@@ -12069,7 +12069,6 @@ altivec_init_builtins (void)
   size_t i;
   tree ftype;
   tree decl;
-  HOST_WIDE_INT builtin_mask = rs6000_builtin_mask;
 
   tree pvoid_type_node = build_pointer_type (void_type_node);
 
@@ -12431,17 +12430,8 @@ altivec_init_builtins (void)
   d = bdesc_dst;
   for (i = 0; i < ARRAY_SIZE (bdesc_dst); i++, d++)
     {
-      HOST_WIDE_INT mask = d->mask;
-
       /* It is expected that these dst built-in functions may have
 	 d->icode equal to CODE_FOR_nothing.  */
-      if ((mask & builtin_mask) != mask)
-	{
-	  if (TARGET_DEBUG_BUILTIN)
-	    fprintf (stderr, "altivec_init_builtins, skip dst %s\n",
-		     d->name);
-	  continue;
-	}
       def_builtin (d->name, void_ftype_pcvoid_int_int, d->code);
     }
 
@@ -12451,15 +12441,6 @@ altivec_init_builtins (void)
     {
       machine_mode mode1;
       tree type;
-      HOST_WIDE_INT mask = d->mask;
-
-      if ((mask & builtin_mask) != mask)
-	{
-	  if (TARGET_DEBUG_BUILTIN)
-	    fprintf (stderr, "altivec_init_builtins, skip predicate %s\n",
-		     d->name);
-	  continue;
-	}
 
       if (rs6000_overloaded_builtin_p (d->code))
 	mode1 = VOIDmode;
@@ -12506,15 +12487,6 @@ altivec_init_builtins (void)
     {
       machine_mode mode0;
       tree type;
-      HOST_WIDE_INT mask = d->mask;
-
-      if ((mask & builtin_mask) != mask)
-	{
-	  if (TARGET_DEBUG_BUILTIN)
-	    fprintf (stderr, "altivec_init_builtins, skip abs %s\n",
-		     d->name);
-	  continue;
-	}
 
       /* Cannot define builtin if the instruction is disabled.  */
       gcc_assert (d->icode != CODE_FOR_nothing);

gcc/testsuite/ChangeLog

@@ -1,3 +1,13 @@
+2020-03-30  Will Schmidt  <will_schmidt@vnet.ibm.com>
+
+	* gcc.target/powerpc/pragma_power6.c: New.
+	* gcc.target/powerpc/pragma_power7.c: New.
+	* gcc.target/powerpc/pragma_power8.c: New.
+	* gcc.target/powerpc/pragma_power9.c: New.
+	* gcc.target/powerpc/pragma_misc9.c: New.
+	* gcc.target/powerpc/vsu/vec-all-nez-7.c: Update error message.
+	* gcc.target/powerpc/vsu/vec-any-eqz-7.c: Update error message.
+
 2020-03-30  Will Schmidt  <will_schmidt@vnet.ibm.com>
 
 	* gcc.target/powerpc/bswap64-4.c: Update scan-assembler

gcc/testsuite/gcc.target/powerpc/pragma_misc9.c

@@ -0,0 +1,47 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p9vector_ok } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-mdejagnu-cpu=power9 -maltivec -O2" } */
+
+/* Ensure that if we set a pragma gcc target for an
+   older processor, we do not compile builtins that
+   the older target does not support.  */
+
+#include <altivec.h>
+
+vector bool int
+test1 (vector signed int a, vector signed int b)
+{
+  return vec_cmpnez (a, b);
+}
+
+#pragma GCC target ("cpu=power8")
+vector bool int
+test2 (vector signed int a, vector signed int b)
+{
+  return vec_cmpnez (a, b);
+  /* { dg-error "'__builtin_altivec_vcmpnezw' requires the '-mcpu=power9' option" "" { target *-*-* } .-1 } */
+}
+
+#pragma GCC target ("cpu=power7")
+vector signed int
+test3 (vector signed int a, vector signed int b)
+{
+  return vec_mergee (a, b);
+  /* { dg-error "'__builtin_altivec_vmrgew_v4si' requires the '-mpower8-vector' option" "" { target *-*-* } .-1 } */
+}
+
+#pragma GCC target ("cpu=power6")
+vector signed int
+test4 (vector int a, vector int b)
+{
+  return vec_sldw (a, b, 2);
+  /* { dg-error "'__builtin_vsx_xxsldwi_4si' requires the '-mvsx' option" "" { target *-*-* } .-1 } */
+}
+
+vector int
+test5 (vector int a, vector int b)
+{
+  return vec_add (a, b);
+}
+

gcc/testsuite/gcc.target/powerpc/pragma_power6.c

@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-mdejagnu-cpu=power6 -maltivec -O2" } */
+
+#include <altivec.h>
+
+#pragma GCC target ("cpu=power6,altivec")
+#ifdef _ARCH_PWR6
+vector int
+isa_2_05 (vector int a, vector int b)
+{
+  return vec_add (a, b);
+}
+#else
+#error failed power6 pragma target
+#endif
+

gcc/testsuite/gcc.target/powerpc/pragma_power7.c

@@ -0,0 +1,32 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-mdejagnu-cpu=power6 -maltivec -O2" } */
+
+#include <altivec.h>
+
+#pragma GCC target ("cpu=power6,altivec")
+#ifdef _ARCH_PWR6
+vector int
+test1 (vector int a, vector int b)
+{
+  return vec_add (a, b);
+}
+#else
+#error failed power6 pragma target
+#endif
+
+#pragma GCC target ("cpu=power7")
+/* Force a re-read of altivec.h with new cpu target. */
+#undef _ALTIVEC_H
+#include <altivec.h>
+#ifdef _ARCH_PWR7
+vector signed int
+test2 (vector signed int a, vector signed int b)
+{
+  return vec_sldw (a, b, 3);
+}
+#else
+#error failed to set power7 pragma target
+#endif
+

gcc/testsuite/gcc.target/powerpc/pragma_power8.c

@@ -0,0 +1,52 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mdejagnu-cpu=power6 -maltivec -O2" } */
+
+#include <altivec.h>
+
+#pragma GCC target ("cpu=power6,altivec")
+#ifdef _ARCH_PWR6
+vector int
+test1 (vector int a, vector int b)
+{
+  return vec_add (a, b);
+}
+#else
+#error failed power6 pragma target
+#endif
+
+#pragma GCC target ("cpu=power7")
+/* Force a re-read of altivec.h with new cpu target. */
+#undef _ALTIVEC_H
+#include <altivec.h>
+#ifdef _ARCH_PWR7
+vector signed int
+test2 (vector signed int a, vector signed int b)
+{
+  return vec_sldw (a, b, 3);
+}
+#else
+#error failed to set power7 pragma target
+#endif
+
+#pragma GCC target ("cpu=power8")
+/* Force a re-read of altivec.h with new cpu target. */
+#undef _ALTIVEC_H
+#include <altivec.h>
+#ifdef _ARCH_PWR8
+vector int
+test3 (vector int a, vector int b)
+{
+  return vec_mergee (a, b);
+}
+typedef __attribute__((altivec(vector__))) long vec_t;
+int
+test3b (vec_t a, vec_t b)
+{
+  return __builtin_vec_vcmpeq_p (2, a, b);
+}
+#else
+#error failed to set power8 pragma target.
+#endif
+

gcc/testsuite/gcc.target/powerpc/pragma_power9.c

@@ -0,0 +1,63 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-mdejagnu-cpu=power6 -maltivec -O2" } */
+
+#include <altivec.h>
+
+#ifdef _ARCH_PWR6
+vector int
+test1 (vector int a, vector int b)
+{
+  return vec_add (a, b);
+}
+#else
+#error failed on default power6 pragma target
+#endif
+
+#pragma GCC target ("cpu=power7")
+#undef _ALTIVEC_H
+#include <altivec.h>
+#ifdef _ARCH_PWR7
+vector signed int
+test2 (vector signed int a, vector signed int b)
+{
+  return vec_sldw (a, b, 3);
+}
+#else
+#error failed to set power7 pragma target
+#endif
+
+#pragma GCC target ("cpu=power8")
+#undef _ALTIVEC_H
+#include <altivec.h>
+#ifdef _ARCH_PWR8
+vector int
+test3 (vector int a, vector int b)
+{
+  return vec_mergee (a, b);
+}
+
+typedef __attribute__((altivec(vector__))) long vec_t;
+int
+test3b (vec_t a, vec_t b)
+{
+  return __builtin_vec_vcmpeq_p (2, a, b);
+}
+#else
+#error failed to set power8 pragma target.
+#endif
+
+#pragma GCC target ("cpu=power9,power9-vector")
+#undef _ALTIVEC_H
+#include <altivec.h>
+#ifdef _ARCH_PWR9
+vector bool int
+test4 (vector signed int a, vector signed int b)
+{
+  return vec_cmpnez (a, b);
+}
+#else
+#error Failed to set cpu=power9 pragma target.
+#endif
+

gcc/testsuite/gcc.target/powerpc/vsu/vec-all-nez-7.c

@@ -11,5 +11,6 @@ test_all_not_equal_and_not_zero (vector unsigned short *arg1_p,
   vector unsigned short arg_1 = *arg1_p;
   vector unsigned short arg_2 = *arg2_p;
 
-  return __builtin_vec_vcmpnez_p (__CR6_LT, arg_1, arg_2);	/* { dg-error "'__builtin_vec_vcmpnez_p' is not supported in this compiler configuration" } */
+  return __builtin_vec_vcmpnez_p (__CR6_LT, arg_1, arg_2);
+  /* { dg-error "'__builtin_altivec_vcmpnezh_p' requires the '-mcpu=power9' option" "" { target *-*-* } .-1 } */
 }

gcc/testsuite/gcc.target/powerpc/vsu/vec-any-eqz-7.c

@@ -10,5 +10,6 @@ test_any_equal (vector unsigned int *arg1_p, vector unsigned int *arg2_p)
   vector unsigned int arg_1 = *arg1_p;
   vector unsigned int arg_2 = *arg2_p;
 
-  return __builtin_vec_vcmpnez_p (__CR6_LT_REV, arg_1, arg_2);	/* { dg-error "'__builtin_vec_vcmpnez_p' is not supported in this compiler configuration" } */
+  return __builtin_vec_vcmpnez_p (__CR6_LT_REV, arg_1, arg_2);
+  /* { dg-error "'__builtin_altivec_vcmpnezw_p' requires the '-mcpu=power9' option" "" { target *-*-* } .-1 } */
 }