From: Eric Christopher <echristo@apple.com>
Date: Fri, 24 Jul 2009 00:33:09 +0000 (+0000)
Subject: Update insertps handling based on feedback.  Move to a v4f32 style
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=fbd6687cf1fb3408e8e34994f13e69c754e5c15e;p=oota-llvm.git

Update insertps handling based on feedback.  Move to a v4f32 style
to support vector arguments and scalar arguments correctly. Update
lowering and fix comment to refer to pinsr* instead of insertps.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76921 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 57a13ac20f2..81f502b2780 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -4383,11 +4383,12 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT_SSE4(SDValue Op, SelectionDAG &DAG){
     // Bits [3:0] of the constant are the zero mask.  The DAG Combiner may
     //   combine either bitwise AND or insert of float 0.0 to set these bits.
     N2 = DAG.getIntPtrConstant(cast<ConstantSDNode>(N2)->getZExtValue() << 4);
+    // Create this as a scalar to vector..
+    N1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v4f32, N1);
     return DAG.getNode(X86ISD::INSERTPS, dl, VT, N0, N1, N2);
-  } else if (EVT == MVT::i32) {
-    // InsertPS works with constant index.
-    if (isa<ConstantSDNode>(N2))
-      return Op;
+  } else if (EVT == MVT::i32 && isa<ConstantSDNode>(N2)) {
+    // PINSR* works with constant index.
+    return Op;
   }
   return SDValue();
 }
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td
index 2c9a064bd44..eb26ac05167 100644
--- a/lib/Target/X86/X86InstrSSE.td
+++ b/lib/Target/X86/X86InstrSSE.td
@@ -51,7 +51,7 @@ def X86pinsrw  : SDNode<"X86ISD::PINSRW",
                                       SDTCisVT<2, i32>, SDTCisPtrTy<3>]>>;
 def X86insrtps : SDNode<"X86ISD::INSERTPS", 
                  SDTypeProfile<1, 3, [SDTCisVT<0, v4f32>, SDTCisSameAs<0,1>,
-                                      SDTCisVT<2, f32>, SDTCisPtrTy<3>]>>;
+                                      SDTCisVT<2, v4f32>, SDTCisPtrTy<3>]>>;
 def X86vzmovl  : SDNode<"X86ISD::VZEXT_MOVL",
                  SDTypeProfile<1, 1, [SDTCisSameAs<0,1>]>>;
 def X86vzload  : SDNode<"X86ISD::VZEXT_LOAD", SDTLoad,
@@ -3596,32 +3596,28 @@ defm PINSRD      : SS41I_insert32<0x22, "pinsrd">;
 // in the target vector.
 let Constraints = "$src1 = $dst" in {
   multiclass SS41I_insertf32<bits<8> opc, string OpcodeStr> {
-    def match_rr : SS4AIi8<opc, MRMSrcReg, (outs VR128:$dst),
-                   (ins VR128:$src1, FR32:$src2, i32i8imm:$src3),
+    def rr : SS4AIi8<opc, MRMSrcReg, (outs VR128:$dst),
+                   (ins VR128:$src1, VR128:$src2, i32i8imm:$src3),
                    !strconcat(OpcodeStr, 
                     "\t{$src3, $src2, $dst|$dst, $src2, $src3}"),
                    [(set VR128:$dst, 
-                     (X86insrtps VR128:$src1, FR32:$src2, imm:$src3))]>, OpSize;
-    def match_rm : SS4AIi8<opc, MRMSrcMem, (outs VR128:$dst),
+                     (X86insrtps VR128:$src1, VR128:$src2, imm:$src3))]>, OpSize;
+    def rm : SS4AIi8<opc, MRMSrcMem, (outs VR128:$dst),
                    (ins VR128:$src1, f32mem:$src2, i32i8imm:$src3),
                    !strconcat(OpcodeStr,
                     "\t{$src3, $src2, $dst|$dst, $src2, $src3}"),
                    [(set VR128:$dst, 
-                     (X86insrtps VR128:$src1, (loadf32 addr:$src2),
+                     (X86insrtps VR128:$src1,
+                                (v4f32 (scalar_to_vector (loadf32 addr:$src2))),
                                  imm:$src3))]>, OpSize;
   }
 }
 
-let Constraints = "$src1 = $dst" in {
-  def INSERTPSrr : SS4AIi8<0x21, MRMSrcReg, (outs VR128:$dst),
-                          (ins VR128:$src1, VR128:$src2, i32i8imm:$src3),
-                          "insertps\t{$src3, $src2, $dst|$dst, $src2, $src3}",
-                    [(set VR128:$dst, (int_x86_sse41_insertps VR128:$src1, 
-                                                    VR128:$src2, imm:$src3))]>;
-}
-
 defm INSERTPS    : SS41I_insertf32<0x21, "insertps">;
 
+def : Pat<(int_x86_sse41_insertps VR128:$src1, VR128:$src2, imm:$src3),
+          (INSERTPSrr VR128:$src1, VR128:$src2, imm:$src3)>;
+
 let Defs = [EFLAGS] in {
 def PTESTrr : SS48I<0x17, MRMSrcReg, (outs), (ins VR128:$src1, VR128:$src2),
                     "ptest \t{$src2, $src1|$src1, $src2}", []>, OpSize;