From: Pete Cooper <peter_cooper@apple.com>
Date: Mon, 14 Nov 2011 19:38:42 +0000 (+0000)
Subject: Changed SSE4/AVX <2 x i64> extract and insert ops to be Custom lowered
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=a77214a4c43d7a0c49c348439c6887f28bd6d53d

Changed SSE4/AVX <2 x i64> extract and insert ops to be Custom lowered

Constant idx case is still done in tablegen but other cases are then expanded

Fixes <rdar://problem/10435460>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144557 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 5d16f471cfa..4e111313361 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -944,9 +944,11 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
     setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v4i32, Custom);
     setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v4f32, Custom);
 
+    // FIXME: these should be Legal but thats only for the case where
+    // the index is constant.  For now custom expand to deal with that
     if (Subtarget->is64Bit()) {
-      setOperationAction(ISD::INSERT_VECTOR_ELT,  MVT::v2i64, Legal);
-      setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2i64, Legal);
+      setOperationAction(ISD::INSERT_VECTOR_ELT,  MVT::v2i64, Custom);
+      setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2i64, Custom);
     }
   }
 
@@ -6963,8 +6965,8 @@ X86TargetLowering::LowerEXTRACT_VECTOR_ELT_SSE4(SDValue Op,
                                               Op.getOperand(0)),
                                               Op.getOperand(1));
     return DAG.getNode(ISD::BITCAST, dl, MVT::f32, Extract);
-  } else if (VT == MVT::i32) {
-    // ExtractPS works with constant index.
+  } else if (VT == MVT::i32 || VT == MVT::i64) {
+    // ExtractPS/pextrq works with constant index.
     if (isa<ConstantSDNode>(Op.getOperand(1)))
       return Op;
   }
@@ -7103,7 +7105,8 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT_SSE4(SDValue Op,
     // 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 (EltVT == MVT::i32 && isa<ConstantSDNode>(N2)) {
+  } else if ((EltVT == MVT::i32 || EltVT == MVT::i64) && 
+             isa<ConstantSDNode>(N2)) {
     // PINSR* works with constant index.
     return Op;
   }
diff --git a/test/CodeGen/X86/vector-variable-idx2.ll b/test/CodeGen/X86/vector-variable-idx2.ll
new file mode 100644
index 00000000000..d47df90e7e6
--- /dev/null
+++ b/test/CodeGen/X86/vector-variable-idx2.ll
@@ -0,0 +1,26 @@
+; RUN: llc < %s -march=x86-64 -mattr=+sse41
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin11.0.0"
+
+define i64 @__builtin_ia32_vec_ext_v2di(<2 x i64> %a, i32 %i) nounwind {
+  %1 = alloca <2 x i64>, align 16
+  %2 = alloca i32, align 4
+  store <2 x i64> %a, <2 x i64>* %1, align 16
+  store i32 %i, i32* %2, align 4
+  %3 = load <2 x i64>* %1, align 16
+  %4 = load i32* %2, align 4
+  %5 = extractelement <2 x i64> %3, i32 %4
+  ret i64 %5
+}
+
+define <2 x i64> @__builtin_ia32_vec_int_v2di(<2 x i64> %a, i32 %i) nounwind {
+  %1 = alloca <2 x i64>, align 16
+  %2 = alloca i32, align 4
+  store <2 x i64> %a, <2 x i64>* %1, align 16
+  store i32 %i, i32* %2, align 4
+  %3 = load <2 x i64>* %1, align 16
+  %4 = load i32* %2, align 4
+  %5 = insertelement <2 x i64> %3, i64 1, i32 %4
+  ret <2 x i64> %5
+}