[llvm-commits] [llvm] r43072 - in /llvm/trunk: lib/CodeGen/SelectionDAG/LegalizeDAG.cpp test/CodeGen/X86/split-select.ll

[Dan Gohman]

Author: djg
Date: Wed Oct 17 09:48:28 2007
New Revision: 43072

URL: http://llvm.org/viewvc/llvm-project?rev=43072&view=rev
Log:
Add support for ISD::SELECT in SplitVectorOp.

Added:
    llvm/trunk/test/CodeGen/X86/split-select.ll
Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=43072&r1=43071&r2=43072&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Wed Oct 17 09:48:28 2007
@@ -6225,6 +6225,26 @@
     }
     break;
   }
+  case ISD::SELECT: {
+    SDOperand Cond = Node->getOperand(0);
+
+    SDOperand LL, LH, RL, RH;
+    SplitVectorOp(Node->getOperand(1), LL, LH);
+    SplitVectorOp(Node->getOperand(2), RL, RH);
+
+    if (MVT::isVector(Cond.getValueType())) {
+      // Handle a vector merge.
+      SDOperand CL, CH;
+      SplitVectorOp(Cond, CL, CH);
+      Lo = DAG.getNode(Node->getOpcode(), NewVT, CL, LL, RL);
+      Hi = DAG.getNode(Node->getOpcode(), NewVT, CH, LH, RH);
+    } else {
+      // Handle a simple select with vector operands.
+      Lo = DAG.getNode(Node->getOpcode(), NewVT, Cond, LL, RL);
+      Hi = DAG.getNode(Node->getOpcode(), NewVT, Cond, LH, RH);
+    }
+    break;
+  }
   case ISD::ADD:
   case ISD::SUB:
   case ISD::MUL:

Added: llvm/trunk/test/CodeGen/X86/split-select.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/split-select.ll?rev=43072&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/split-select.ll (added)
+++ llvm/trunk/test/CodeGen/X86/split-select.ll Wed Oct 17 09:48:28 2007
@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | llc -march=x86-64 | grep test | count 1
+
+define void @foo(i1 %c, <2 x float> %a, <2 x float> %b, <2 x float>* %p) {
+  %x = select i1 %c, <2 x float> %a, <2 x float> %b
+  store <2 x float> %x, <2 x float>* %p
+  ret void
+}