[llvm-commits] [llvm] r131582 - in /llvm/trunk: lib/Target/ARM/ARMISelLowering.cpp test/CodeGen/ARM/vrev.ll

[Tanya Lattner]

Author: tbrethou
Date: Wed May 18 16:44:54 2011
New Revision: 131582

URL: http://llvm.org/viewvc/llvm-project?rev=131582&view=rev
Log:
Handle perfect shuffle case that generates a vrev for vectors of floats.
Add test case.

Modified:
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
    llvm/trunk/test/CodeGen/ARM/vrev.ll

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=131582&r1=131581&r2=131582&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Wed May 18 16:44:54 2011
@@ -4184,7 +4184,8 @@
   default: llvm_unreachable("Unknown shuffle opcode!");
   case OP_VREV:
     // VREV divides the vector in half and swaps within the half.
-    if (VT.getVectorElementType() == MVT::i32)
+    if (VT.getVectorElementType() == MVT::i32 ||
+        VT.getVectorElementType() == MVT::f32)
       return DAG.getNode(ARMISD::VREV64, dl, VT, OpLHS);
     // vrev <4 x i16> -> VREV32
     if (VT.getVectorElementType() == MVT::i16)

Modified: llvm/trunk/test/CodeGen/ARM/vrev.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/vrev.ll?rev=131582&r1=131581&r2=131582&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/vrev.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/vrev.ll Wed May 18 16:44:54 2011
@@ -163,3 +163,18 @@
   store <2 x i16> %tmp11, <2 x i16>* %dst, align 4
   ret void
 }
+
+; Test vrev of float4
+define void @float_vrev64(float* nocapture %source, <4 x float>* nocapture %dest) nounwind noinline ssp {
+; CHECK: float_vrev64
+; CHECK: vext.32
+; CHECK: vrev64.32
+entry:
+  %0 = bitcast float* %source to <4 x float>*
+  %tmp2 = load <4 x float>* %0, align 4
+  %tmp5 = shufflevector <4 x float> <float 0.000000e+00, float undef, float undef, float undef>, <4 x float> %tmp2, <4 x i32> <i32 0, i32 7, i32 0, i32 0>
+  %arrayidx8 = getelementptr inbounds <4 x float>* %dest, i32 11
+  store <4 x float> %tmp5, <4 x float>* %arrayidx8, align 4
+  ret void
+}
+