Add an FMA intrinsic for ARM Neon.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164904 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Basic/arm_neon.td b/include/clang/Basic/arm_neon.td
index 360c7e2a63c9b22cabe74670656786a4b125ecb1..3373e017decb57400899c2c00b49baae0fd3efeb 100644 (file)
--- a/include/clang/Basic/arm_neon.td
+++ b/include/clang/Basic/arm_neon.td
@@ -394,3 +394,7 @@ def VREINTERPRET
   : Inst<"vreinterpret", "dd",
          "csilUcUsUiUlhfPcPsQcQsQiQlQUcQUsQUiQUlQhQfQPcQPs", OP_REINT>;
 
+////////////////////////////////////////////////////////////////////////////////
+// Vector fused multiply-add operations
+
+def VFMA : SInst<"vfma", "dddd", "fQf">;

diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 7a0abd71a683548c038c77bcb9700d8ed85104b5..a084be1f71e54dd3129076e38e4f863023233892 100644 (file)
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -2032,6 +2032,14 @@ Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
     Int = usgn ? Intrinsic::arm_neon_vmullu : Intrinsic::arm_neon_vmulls;
     Int = Type.isPoly() ? (unsigned)Intrinsic::arm_neon_vmullp : Int;
     return EmitNeonCall(CGM.getIntrinsic(Int, Ty), Ops, "vmull");
+  case ARM::BI__builtin_neon_vfma_v:
+  case ARM::BI__builtin_neon_vfmaq_v: {
+    Value *F = CGM.getIntrinsic(Intrinsic::fma, Ty);
+    Ops[0] = Builder.CreateBitCast(Ops[0], Ty);
+    Ops[1] = Builder.CreateBitCast(Ops[1], Ty);
+    Ops[2] = Builder.CreateBitCast(Ops[2], Ty);
+    return Builder.CreateCall3(F, Ops[0], Ops[1], Ops[2]);
+  }
   case ARM::BI__builtin_neon_vpadal_v:
   case ARM::BI__builtin_neon_vpadalq_v: {
     Int = usgn ? Intrinsic::arm_neon_vpadalu : Intrinsic::arm_neon_vpadals;