[PowerPC] [Clang] Add vector int128 pack/unpack builtins

unsigned long long builtin_unpack_vector_int128 (vector int128_t, int);
vector int128_t builtin_pack_vector_int128 (unsigned long long, unsigned long long);

Builtins should behave the same way as in GCC.

Patch By: wuzish (Zixuan Wu)
Differential Revision: https://reviews.llvm.org/D52074

llvm-svn: 342614

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 4c504af..a1bfff4 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -2970,6 +2970,13 @@ bool Sema::CheckPPCBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
     return Diag(TheCall->getBeginLoc(), diag::err_ppc_builtin_only_on_pwr7)
            << TheCall->getSourceRange();
 
+  auto SemaVSXCheck = [&](CallExpr *TheCall) -> bool {
+    if (!Context.getTargetInfo().hasFeature("vsx"))
+      return Diag(TheCall->getBeginLoc(), diag::err_ppc_builtin_only_on_pwr7)
+             << TheCall->getSourceRange();
+    return false;
+  };
+
   switch (BuiltinID) {
   default: return false;
   case PPC::BI__builtin_altivec_crypto_vshasigmaw:
@@ -2988,6 +2995,11 @@ bool Sema::CheckPPCBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
   case PPC::BI__builtin_vsx_xxpermdi:
   case PPC::BI__builtin_vsx_xxsldwi:
     return SemaBuiltinVSX(TheCall);
+  case PPC::BI__builtin_unpack_vector_int128:
+    return SemaVSXCheck(TheCall) ||
+           SemaBuiltinConstantArgRange(TheCall, 1, 0, 1);
+  case PPC::BI__builtin_pack_vector_int128:
+    return SemaVSXCheck(TheCall);
   }
   return SemaBuiltinConstantArgRange(TheCall, i, l, u);
 }