From: Chad Rosier <mcrosier@codeaurora.org>
Date: Mon, 2 Dec 2013 21:05:16 +0000 (+0000)
Subject: [AArch64] Implemented vcopy_lane patterns using scalar DUP instruction.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d4809bb0e389787a1682d45e01290a3da8d631e3;p=oota-llvm.git

[AArch64] Implemented vcopy_lane patterns using scalar DUP instruction.
Patch by Ana Pazos!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196151 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/AArch64/AArch64InstrNEON.td b/lib/Target/AArch64/AArch64InstrNEON.td
index 6a339c8b094..581ebae2481 100644
--- a/lib/Target/AArch64/AArch64InstrNEON.td
+++ b/lib/Target/AArch64/AArch64InstrNEON.td
@@ -5731,28 +5731,13 @@ multiclass NeonI_Scalar_DUP_Elt_pattern<Instruction DUPI, ValueType ResTy,
                 OpNImm:$Imm))>;
 }
 
-multiclass NeonI_SDUP<PatFrag GetLow, PatFrag GetHigh,
-                 ValueType ResTy, ValueType OpTy> {
-  def : Pat<(ResTy (GetLow VPR128:$Rn)),
-            (ResTy (EXTRACT_SUBREG (OpTy VPR128:$Rn), sub_64))>;
-  def : Pat<(ResTy (GetHigh VPR128:$Rn)),
-            (ResTy (DUPdv_D (OpTy VPR128:$Rn), 1))>;
-}
-
-defm : NeonI_SDUP<Neon_Low16B, Neon_High16B, v8i8, v16i8>;
-defm : NeonI_SDUP<Neon_Low8H, Neon_High8H, v4i16, v8i16>;
-defm : NeonI_SDUP<Neon_Low4S, Neon_High4S, v2i32, v4i32>;
-defm : NeonI_SDUP<Neon_Low2D, Neon_High2D, v1i64, v2i64>;
-defm : NeonI_SDUP<Neon_Low4float, Neon_High4float, v2f32, v4f32>;
-defm : NeonI_SDUP<Neon_Low2double, Neon_High2double, v1f64, v2f64>;
-
 // Patterns for vector extract of FP data using scalar DUP instructions
 defm : NeonI_Scalar_DUP_Elt_pattern<DUPsv_S, f32,
   v4f32, neon_uimm2_bare, v2f32, v4f32, neon_uimm1_bare>;
 defm : NeonI_Scalar_DUP_Elt_pattern<DUPdv_D, f64,
   v2f64, neon_uimm1_bare, v1f64, v2f64, neon_uimm0_bare>;
 
-multiclass NeonI_Scalar_DUP_Vec_pattern<Instruction DUPI,
+multiclass NeonI_Scalar_DUP_Ext_Vec_pattern<Instruction DUPI,
   ValueType ResTy, ValueType OpTy,Operand OpLImm,
   ValueType NOpTy, ValueType ExTy, Operand OpNImm> {
 
@@ -5764,14 +5749,87 @@ multiclass NeonI_Scalar_DUP_Vec_pattern<Instruction DUPI,
               (ExTy (SUBREG_TO_REG (i64 0), VPR64:$Rn, sub_64)),
                 OpNImm:$Imm))>;
 }
-// Patterns for extract subvectors of v1ix data using scalar DUP instructions
-defm : NeonI_Scalar_DUP_Vec_pattern<DUPbv_B,
-  v1i8, v16i8, neon_uimm4_bare, v8i8, v16i8, neon_uimm3_bare>;
-defm : NeonI_Scalar_DUP_Vec_pattern<DUPhv_H,
-  v1i16, v8i16, neon_uimm3_bare, v4i16, v8i16, neon_uimm2_bare>;
-defm : NeonI_Scalar_DUP_Vec_pattern<DUPsv_S,
-  v1i32, v4i32, neon_uimm2_bare, v2i32, v4i32, neon_uimm1_bare>;
 
+// Patterns for extract subvectors of v1ix data using scalar DUP instructions.
+defm : NeonI_Scalar_DUP_Ext_Vec_pattern<DUPbv_B, v1i8, v16i8, neon_uimm4_bare,
+                                        v8i8, v16i8, neon_uimm3_bare>;
+defm : NeonI_Scalar_DUP_Ext_Vec_pattern<DUPhv_H, v1i16, v8i16, neon_uimm3_bare,
+                                        v4i16, v8i16, neon_uimm2_bare>;
+defm : NeonI_Scalar_DUP_Ext_Vec_pattern<DUPsv_S, v1i32, v4i32, neon_uimm2_bare,
+                                        v2i32, v4i32, neon_uimm1_bare>;
+
+multiclass NeonI_Scalar_DUP_Copy_pattern1<Instruction DUPI, ValueType ResTy,
+                                          ValueType OpTy, ValueType ElemTy,
+                                          Operand OpImm, ValueType OpNTy,
+                                          ValueType ExTy, Operand OpNImm> {
+
+  def : Pat<(ResTy (vector_insert (ResTy undef),
+              (ElemTy (vector_extract (OpTy VPR128:$Rn), OpImm:$Imm)),
+              (neon_uimm0_bare:$Imm))),
+            (ResTy (DUPI (OpTy VPR128:$Rn), OpImm:$Imm))>;
+
+  def : Pat<(ResTy (vector_insert (ResTy undef),
+              (ElemTy (vector_extract (OpNTy VPR64:$Rn), OpNImm:$Imm)),
+              (OpNImm:$Imm))),
+            (ResTy (DUPI
+              (ExTy (SUBREG_TO_REG (i64 0), VPR64:$Rn, sub_64)),
+              OpNImm:$Imm))>;
+}
+
+multiclass NeonI_Scalar_DUP_Copy_pattern2<Instruction DUPI, ValueType ResTy,
+                                          ValueType OpTy, ValueType ElemTy,
+                                          Operand OpImm, ValueType OpNTy,
+                                          ValueType ExTy, Operand OpNImm> {
+
+  def : Pat<(ResTy (scalar_to_vector
+              (ElemTy (vector_extract (OpTy VPR128:$Rn), OpImm:$Imm)))),
+            (ResTy (DUPI (OpTy VPR128:$Rn), OpImm:$Imm))>;
+
+  def : Pat<(ResTy (scalar_to_vector
+              (ElemTy (vector_extract (OpNTy VPR64:$Rn), OpNImm:$Imm)))),
+            (ResTy (DUPI
+              (ExTy (SUBREG_TO_REG (i64 0), VPR64:$Rn, sub_64)),
+              OpNImm:$Imm))>;
+}
+
+// Patterns for vector copy to v1ix and v1fx vectors using scalar DUP
+// instructions.
+defm : NeonI_Scalar_DUP_Copy_pattern1<DUPdv_D,
+  v1i64, v2i64, i64, neon_uimm1_bare,
+  v1i64, v2i64, neon_uimm0_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern1<DUPsv_S,
+  v1i32, v4i32, i32, neon_uimm2_bare,
+  v2i32, v4i32, neon_uimm1_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern1<DUPhv_H,
+  v1i16, v8i16, i32, neon_uimm3_bare,
+  v4i16, v8i16, neon_uimm2_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern1<DUPbv_B,
+  v1i8, v16i8, i32, neon_uimm4_bare,
+  v8i8, v16i8, neon_uimm3_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern1<DUPdv_D,
+  v1f64, v2f64, f64, neon_uimm1_bare,
+  v1f64, v2f64, neon_uimm0_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern1<DUPsv_S,
+  v1f32, v4f32, f32, neon_uimm2_bare,
+  v2f32, v4f32, neon_uimm1_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern2<DUPdv_D,
+  v1i64, v2i64, i64, neon_uimm1_bare,
+  v1i64, v2i64, neon_uimm0_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern2<DUPsv_S,
+  v1i32, v4i32, i32, neon_uimm2_bare,
+  v2i32, v4i32, neon_uimm1_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern2<DUPhv_H,
+  v1i16, v8i16, i32, neon_uimm3_bare,
+  v4i16, v8i16, neon_uimm2_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern2<DUPbv_B,
+  v1i8, v16i8, i32, neon_uimm4_bare,
+  v8i8, v16i8, neon_uimm3_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern2<DUPdv_D,
+  v1f64, v2f64, f64, neon_uimm1_bare,
+  v1f64, v2f64, neon_uimm0_bare>;
+defm : NeonI_Scalar_DUP_Copy_pattern2<DUPsv_S,
+  v1f32, v4f32, f32, neon_uimm2_bare,
+  v2f32, v4f32, neon_uimm1_bare>;
 
 multiclass NeonI_Scalar_DUP_alias<string asmop, string asmlane,
                                   Instruction DUPI, Operand OpImm,
@@ -5788,6 +5846,20 @@ defm : NeonI_Scalar_DUP_alias<"mov", ".h", DUPhv_H, neon_uimm3_bare, FPR16>;
 defm : NeonI_Scalar_DUP_alias<"mov", ".s", DUPsv_S, neon_uimm2_bare, FPR32>;
 defm : NeonI_Scalar_DUP_alias<"mov", ".d", DUPdv_D, neon_uimm1_bare, FPR64>;
 
+multiclass NeonI_SDUP<PatFrag GetLow, PatFrag GetHigh, ValueType ResTy,
+                      ValueType OpTy> {
+  def : Pat<(ResTy (GetLow VPR128:$Rn)),
+            (ResTy (EXTRACT_SUBREG (OpTy VPR128:$Rn), sub_64))>;
+  def : Pat<(ResTy (GetHigh VPR128:$Rn)),
+            (ResTy (DUPdv_D (OpTy VPR128:$Rn), 1))>;
+}
+
+defm : NeonI_SDUP<Neon_Low16B, Neon_High16B, v8i8, v16i8>;
+defm : NeonI_SDUP<Neon_Low8H, Neon_High8H, v4i16, v8i16>;
+defm : NeonI_SDUP<Neon_Low4S, Neon_High4S, v2i32, v4i32>;
+defm : NeonI_SDUP<Neon_Low2D, Neon_High2D, v1i64, v2i64>;
+defm : NeonI_SDUP<Neon_Low4float, Neon_High4float, v2f32, v4f32>;
+defm : NeonI_SDUP<Neon_Low2double, Neon_High2double, v1f64, v2f64>;
 
 //===----------------------------------------------------------------------===//
 // Non-Instruction Patterns
@@ -7110,13 +7182,10 @@ def : Pat<(v1i32 (scalar_to_vector GPR32:$src)),
 def : Pat<(v1i64 (scalar_to_vector GPR64:$src)),
           (FMOVdx $src)>;
 
-def : Pat<(v1f32 (scalar_to_vector (f32 FPR32:$Rn))),
-          (v1f32 FPR32:$Rn)>;
-def : Pat<(v1f64 (scalar_to_vector (f64 FPR64:$Rn))),
-          (v1f64 FPR64:$Rn)>;
-
 def : Pat<(v1f64 (scalar_to_vector (f64 FPR64:$src))),
           (FMOVdd $src)>;
+def : Pat<(v1f32 (scalar_to_vector (f32 FPR32:$src))),
+          (FMOVss $src)>;
 
 def : Pat<(v2f64 (scalar_to_vector (f64 FPR64:$src))),
           (INSERT_SUBREG (v2f64 (IMPLICIT_DEF)),
diff --git a/test/CodeGen/AArch64/neon-scalar-copy.ll b/test/CodeGen/AArch64/neon-scalar-copy.ll
index 59f62374d4f..d433ff595d1 100644
--- a/test/CodeGen/AArch64/neon-scalar-copy.ll
+++ b/test/CodeGen/AArch64/neon-scalar-copy.ll
@@ -78,3 +78,11 @@ define <1 x i64> @test_vector_dup_dv2D(<2 x i64> %v1) {
  ret <1 x i64> %shuffle.i
 }
 
+define <1 x i64> @test_vector_copy_dup_dv2D(<1 x i64> %a, <2 x i64> %c) {
+  ;CHECK: test_vector_copy_dup_dv2D
+  ;CHECK: dup {{d[0-31]+}}, {{v[0-31]+}}.d[1]
+  %vget_lane = extractelement <2 x i64> %c, i32 1
+  %vset_lane = insertelement <1 x i64> undef, i64 %vget_lane, i32 0
+  ret <1 x i64> %vset_lane
+}
+