[gcc r12-3120] rs6000: Add power7 and power7-64 builtins

[gcc r12-3120] rs6000: Add power7 and power7-64 builtins

[William Schmidt]

https://gcc.gnu.org/g:fce8a52d0aef5f0ef393f68d31669058e0ddfd71

commit r12-3120-gfce8a52d0aef5f0ef393f68d31669058e0ddfd71
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date:   Fri Apr 2 16:48:36 2021 -0500

    rs6000: Add power7 and power7-64 builtins
    
    2021-04-02  Bill Schmidt  <wschmidt@linux.ibm.com>
    
    gcc/
            * config/rs6000/rs6000-builtin-new.def: Add power7 and power7-64
            stanzas.

Diff:
---
 gcc/config/rs6000/rs6000-builtin-new.def | 39 ++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/gcc/config/rs6000/rs6000-builtin-new.def b/gcc/config/rs6000/rs6000-builtin-new.def
index 61f5b94401b..a310bf47b07 100644
--- a/gcc/config/rs6000/rs6000-builtin-new.def
+++ b/gcc/config/rs6000/rs6000-builtin-new.def
@@ -1961,3 +1961,42 @@
 
   const vsll __builtin_vsx_xxspltd_2di (vsll, const int<1>);
     XXSPLTD_V2DI vsx_xxspltd_v2di {}
+
+
+; Power7 builtins (ISA 2.06).
+[power7]
+  const unsigned int __builtin_addg6s (unsigned int, unsigned int);
+    ADDG6S addg6s {}
+
+  const signed long __builtin_bpermd (signed long, signed long);
+    BPERMD bpermd_di {}
+
+  const unsigned int __builtin_cbcdtd (unsigned int);
+    CBCDTD cbcdtd {}
+
+  const unsigned int __builtin_cdtbcd (unsigned int);
+    CDTBCD cdtbcd {}
+
+  const signed int __builtin_divwe (signed int, signed int);
+    DIVWE dive_si {}
+
+  const unsigned int __builtin_divweu (unsigned int, unsigned int);
+    DIVWEU diveu_si {}
+
+  const vsq __builtin_pack_vector_int128 (unsigned long long, unsigned long long);
+    PACK_V1TI packv1ti {}
+
+  void __builtin_ppc_speculation_barrier ();
+    SPECBARR speculation_barrier {}
+
+  const unsigned long __builtin_unpack_vector_int128 (vsq, const int<1>);
+    UNPACK_V1TI unpackv1ti {}
+
+
+; Power7 builtins requiring 64-bit GPRs (even with 32-bit addressing).
+[power7-64]
+  const signed long long __builtin_divde (signed long long, signed long long);
+    DIVDE dive_di {}
+
+  const unsigned long long __builtin_divdeu (unsigned long long, unsigned long long);
+    DIVDEU diveu_di {}