From 1ff446fef66a56558afaf427087767424e7a999b Mon Sep 17 00:00:00 2001
From: Bob Wilson <bob.wilson@apple.com>
Date: Sun, 9 Aug 2009 06:03:09 +0000
Subject: [PATCH] Change Neon table lookup (VTBL) and table extension (VTBX)
 intrinsics to take the table vectors as separate arguments, instead of the
 previous approach where they were combined into one big vector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78525 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/IntrinsicsARM.td | 43 +++++++++++++++++++++++++++--------
 1 file changed, 34 insertions(+), 9 deletions(-)

diff --git a/include/llvm/IntrinsicsARM.td b/include/llvm/IntrinsicsARM.td
index e9a7e2e91da..2a31c504e12 100644
--- a/include/llvm/IntrinsicsARM.td
+++ b/include/llvm/IntrinsicsARM.td
@@ -76,6 +76,28 @@ let TargetPrefix = "arm" in {  // All intrinsics start with "llvm.arm.".
     : Intrinsic<[llvm_anyfloat_ty], [llvm_anyint_ty, llvm_i32_ty], [IntrNoMem]>;
   class Neon_CvtFPToFx_Intrinsic
     : Intrinsic<[llvm_anyint_ty], [llvm_anyfloat_ty, llvm_i32_ty], [IntrNoMem]>;
+
+  // The table operands for VTBL and VTBX consist of 1 to 4 v8i8 vectors.
+  // Besides the table, VTBL has one other v8i8 argument and VTBX has two.
+  // Overall, the classes range from 2 to 6 v8i8 arguments.
+  class Neon_Tbl2Arg_Intrinsic
+    : Intrinsic<[llvm_v8i8_ty],
+                [llvm_v8i8_ty, llvm_v8i8_ty], [IntrNoMem]>;
+  class Neon_Tbl3Arg_Intrinsic
+    : Intrinsic<[llvm_v8i8_ty],
+                [llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty], [IntrNoMem]>;
+  class Neon_Tbl4Arg_Intrinsic
+    : Intrinsic<[llvm_v8i8_ty],
+                [llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty],
+                [IntrNoMem]>;
+  class Neon_Tbl5Arg_Intrinsic
+    : Intrinsic<[llvm_v8i8_ty],
+                [llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty,
+                 llvm_v8i8_ty], [IntrNoMem]>;
+  class Neon_Tbl6Arg_Intrinsic
+    : Intrinsic<[llvm_v8i8_ty],
+                [llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty, llvm_v8i8_ty,
+                 llvm_v8i8_ty, llvm_v8i8_ty], [IntrNoMem]>;
 }
 
 // Arithmetic ops
@@ -294,6 +316,18 @@ def int_arm_neon_vqmovnsu : Neon_1Arg_Narrow_Intrinsic;
 def int_arm_neon_vmovls : Neon_1Arg_Long_Intrinsic;
 def int_arm_neon_vmovlu : Neon_1Arg_Long_Intrinsic;
 
+// Vector Table Lookup.
+def int_arm_neon_vtbl1 : Neon_Tbl2Arg_Intrinsic;
+def int_arm_neon_vtbl2 : Neon_Tbl3Arg_Intrinsic;
+def int_arm_neon_vtbl3 : Neon_Tbl4Arg_Intrinsic;
+def int_arm_neon_vtbl4 : Neon_Tbl5Arg_Intrinsic;
+
+// Vector Table Extension.
+def int_arm_neon_vtbx1 : Neon_Tbl3Arg_Intrinsic;
+def int_arm_neon_vtbx2 : Neon_Tbl4Arg_Intrinsic;
+def int_arm_neon_vtbx3 : Neon_Tbl5Arg_Intrinsic;
+def int_arm_neon_vtbx4 : Neon_Tbl6Arg_Intrinsic;
+
 // Vector Transpose.
 def int_arm_neon_vtrni : Neon_2Result_Intrinsic;
 def int_arm_neon_vtrnf : Neon_2Result_Float_Intrinsic;
@@ -359,13 +393,4 @@ let TargetPrefix = "arm" in {
                                      [llvm_ptr_ty, llvm_anyfloat_ty,
                                       LLVMMatchType<0>, LLVMMatchType<0>,
                                       LLVMMatchType<0>], [IntrWriteArgMem]>;
-
-  // Vector Table Lookup
-  def int_arm_neon_vtbl : Intrinsic<[llvm_v8i8_ty],
-                                    [llvm_anyint_ty, llvm_v8i8_ty],
-                                    [IntrNoMem]>;
-  // Vector Table Extension
-  def int_arm_neon_vtbx : Intrinsic<[llvm_v8i8_ty],
-                                    [llvm_v8i8_ty, llvm_anyint_ty,
-                                     llvm_v8i8_ty], [IntrNoMem]>;
 }