[PowerPC] Add vec_vsx_ld and vec_vsx_st intrinsics

This patch enables the vec_vsx_ld and vec_vsx_st intrinsics for
PowerPC, which provide programmer access to the lxvd2x, lxvw4x,
stxvd2x, and stxvw4x instructions.

New code in altivec.h defines these in terms of new builtins, which
are themselves defined in BuiltinsPPC.def.  The builtins are converted
to LLVM intrinsics in CGBuiltin.cpp.  Additional code is added to
builtins-ppc-vsx.c to verify the correct generation of the intrinsics.

Note that I moved the other VSX builtins so all VSX builtins will be
alphabetical in their own section in BuiltinsPPC.def.

There is a companion patch for LLVM.

llvm-svn: 221768

2 files changed, 101 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 9f6f9f31060..494e1efc5b8 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -6035,6 +6035,8 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
   case PPC::BI__builtin_altivec_lvewx:
   case PPC::BI__builtin_altivec_lvsl:
   case PPC::BI__builtin_altivec_lvsr:
+  case PPC::BI__builtin_vsx_lxvd2x:
+  case PPC::BI__builtin_vsx_lxvw4x:
   {
     Ops[1] = Builder.CreateBitCast(Ops[1], Int8PtrTy);
 
@@ -6064,6 +6066,12 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
     case PPC::BI__builtin_altivec_lvsr:
       ID = Intrinsic::ppc_altivec_lvsr;
       break;
+    case PPC::BI__builtin_vsx_lxvd2x:
+      ID = Intrinsic::ppc_vsx_lxvd2x;
+      break;
+    case PPC::BI__builtin_vsx_lxvw4x:
+      ID = Intrinsic::ppc_vsx_lxvw4x;
+      break;
     }
     llvm::Function *F = CGM.getIntrinsic(ID);
     return Builder.CreateCall(F, Ops, "");
@@ -6075,6 +6083,8 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
   case PPC::BI__builtin_altivec_stvebx:
   case PPC::BI__builtin_altivec_stvehx:
   case PPC::BI__builtin_altivec_stvewx:
+  case PPC::BI__builtin_vsx_stxvd2x:
+  case PPC::BI__builtin_vsx_stxvw4x:
   {
     Ops[2] = Builder.CreateBitCast(Ops[2], Int8PtrTy);
     Ops[1] = Builder.CreateGEP(Ops[2], Ops[1]);
@@ -6097,6 +6107,12 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
     case PPC::BI__builtin_altivec_stvewx:
       ID = Intrinsic::ppc_altivec_stvewx;
       break;
+    case PPC::BI__builtin_vsx_stxvd2x:
+      ID = Intrinsic::ppc_vsx_stxvd2x;
+      break;
+    case PPC::BI__builtin_vsx_stxvw4x:
+      ID = Intrinsic::ppc_vsx_stxvw4x;
+      break;
     }
     llvm::Function *F = CGM.getIntrinsic(ID);
     return Builder.CreateCall(F, Ops, "");
diff --git a/clang/lib/Headers/altivec.h b/clang/lib/Headers/altivec.h
index 1ffefa85851..6e33091db2f 100644
--- a/clang/lib/Headers/altivec.h
+++ b/clang/lib/Headers/altivec.h
@@ -8875,6 +8875,91 @@ vec_vupklsh(vector pixel __a)
 #endif
 }
 
+/* vec_vsx_ld */
+
+#ifdef __VSX__
+
+static vector signed int __ATTRS_o_ai
+vec_vsx_ld(int __a, const vector signed int *__b)
+{
+  return (vector signed int)__builtin_vsx_lxvw4x(__a, __b);
+}
+
+static vector unsigned int __ATTRS_o_ai
+vec_vsx_ld(int __a, const vector unsigned int *__b)
+{
+  return (vector unsigned int)__builtin_vsx_lxvw4x(__a, __b);
+}
+
+static vector float __ATTRS_o_ai
+vec_vsx_ld(int __a, const vector float *__b)
+{
+  return (vector float)__builtin_vsx_lxvw4x(__a, __b);
+}
+
+static vector signed long long __ATTRS_o_ai
+vec_vsx_ld(int __a, const vector signed long long *__b)
+{
+  return (vector signed long long)__builtin_vsx_lxvd2x(__a, __b);
+}
+
+static vector unsigned long long __ATTRS_o_ai
+vec_vsx_ld(int __a, const vector unsigned long long *__b)
+{
+  return (vector unsigned long long)__builtin_vsx_lxvd2x(__a, __b);
+}
+
+static vector double __ATTRS_o_ai
+vec_vsx_ld(int __a, const vector double *__b)
+{
+  return (vector double)__builtin_vsx_lxvd2x(__a, __b);
+}
+
+#endif
+
+/* vec_vsx_st */
+
+#ifdef __VSX__
+
+static void __ATTRS_o_ai
+vec_vsx_st(vector signed int __a, int __b, vector signed int *__c)
+{
+  __builtin_vsx_stxvw4x((vector int)__a, __b, __c);
+}
+
+static void __ATTRS_o_ai
+vec_vsx_st(vector unsigned int __a, int __b, vector unsigned int *__c)
+{
+  __builtin_vsx_stxvw4x((vector int)__a, __b, __c);
+}
+
+static void __ATTRS_o_ai
+vec_vsx_st(vector float __a, int __b, vector float *__c)
+{
+  __builtin_vsx_stxvw4x((vector int)__a, __b, __c);
+}
+
+static void __ATTRS_o_ai
+vec_vsx_st(vector signed long long __a, int __b, vector signed long long *__c)
+{
+  __builtin_vsx_stxvd2x((vector double)__a, __b, __c);
+}
+
+static void __ATTRS_o_ai
+vec_vsx_st(vector unsigned long long __a, int __b,
+           vector unsigned long long *__c)
+{
+  __builtin_vsx_stxvd2x((vector double)__a, __b, __c);
+}
+
+static void __ATTRS_o_ai
+vec_vsx_st(vector double __a, int __b, vector double *__c)
+{
+  __builtin_vsx_stxvd2x((vector double)__a, __b, __c);
+}
+
+#endif
+
 /* vec_xor */
 
 #define __builtin_altivec_vxor vec_xor