[PowerPC] Implement BE VSX load/store builtins - clang portion.

This patch implements all the overloads for vec_xl_be and vec_xst_be. On BE,
they behaves exactly the same with vec_xl and vec_xst, therefore they are
simply implemented by defining a matching macro. On LE, they are implemented
by defining new builtins and intrinsics. For int/float/long long/double, it
is just a load (lxvw4x/lxvd2x) or store(stxvw4x/stxvd2x). For char/char/short,
we also need some extra shuffling before or after call the builtins to get the
desired BE order. For int128, simply call vec_xl or vec_xst.

llvm-svn: 286971

1 files changed, 18 insertions, 2 deletions

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 8aa831ab083..77a3c3a9a8d 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -7911,7 +7911,7 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
   case PPC::BI__builtin_ppc_get_timebase:
     return Builder.CreateCall(CGM.getIntrinsic(Intrinsic::readcyclecounter));
 
-  // vec_ld, vec_lvsl, vec_lvsr
+  // vec_ld, vec_xl_be, vec_lvsl, vec_lvsr
   case PPC::BI__builtin_altivec_lvx:
   case PPC::BI__builtin_altivec_lvxl:
   case PPC::BI__builtin_altivec_lvebx:
@@ -7921,6 +7921,8 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
   case PPC::BI__builtin_altivec_lvsr:
   case PPC::BI__builtin_vsx_lxvd2x:
   case PPC::BI__builtin_vsx_lxvw4x:
+  case PPC::BI__builtin_vsx_lxvd2x_be:
+  case PPC::BI__builtin_vsx_lxvw4x_be:
   {
     Ops[1] = Builder.CreateBitCast(Ops[1], Int8PtrTy);
 
@@ -7956,12 +7958,18 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
     case PPC::BI__builtin_vsx_lxvw4x:
       ID = Intrinsic::ppc_vsx_lxvw4x;
       break;
+    case PPC::BI__builtin_vsx_lxvd2x_be:
+      ID = Intrinsic::ppc_vsx_lxvd2x_be;
+      break;
+    case PPC::BI__builtin_vsx_lxvw4x_be:
+      ID = Intrinsic::ppc_vsx_lxvw4x_be;
+      break;
     }
     llvm::Function *F = CGM.getIntrinsic(ID);
     return Builder.CreateCall(F, Ops, "");
   }
 
-  // vec_st
+  // vec_st, vec_xst_be
   case PPC::BI__builtin_altivec_stvx:
   case PPC::BI__builtin_altivec_stvxl:
   case PPC::BI__builtin_altivec_stvebx:
@@ -7969,6 +7977,8 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
   case PPC::BI__builtin_altivec_stvewx:
   case PPC::BI__builtin_vsx_stxvd2x:
   case PPC::BI__builtin_vsx_stxvw4x:
+  case PPC::BI__builtin_vsx_stxvd2x_be:
+  case PPC::BI__builtin_vsx_stxvw4x_be:
   {
     Ops[2] = Builder.CreateBitCast(Ops[2], Int8PtrTy);
     Ops[1] = Builder.CreateGEP(Ops[2], Ops[1]);
@@ -7997,6 +8007,12 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
     case PPC::BI__builtin_vsx_stxvw4x:
       ID = Intrinsic::ppc_vsx_stxvw4x;
       break;
+    case PPC::BI__builtin_vsx_stxvd2x_be:
+      ID = Intrinsic::ppc_vsx_stxvd2x_be;
+      break;
+    case PPC::BI__builtin_vsx_stxvw4x_be:
+      ID = Intrinsic::ppc_vsx_stxvw4x_be;
+      break;
     }
     llvm::Function *F = CGM.getIntrinsic(ID);
     return Builder.CreateCall(F, Ops, "");