Learn how to make odd splatted constants in range [17,29]. This implements
PowerPC/vec_constants.ll:test_29.
llvm-svn: 27752
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index be30d76..53365b1 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -1105,6 +1105,13 @@
Op = BuildSplatI(SextVal >> 1, SplatSize, Op.getValueType(), DAG);
return DAG.getNode(ISD::ADD, Op.getValueType(), Op, Op);
}
+ // Otherwise, in range [17,29]: (vsplti 15) + (vsplti C).
+ if (SextVal >= 0 && SextVal <= 29) {
+ SDOperand LHS = BuildSplatI(15, SplatSize, Op.getValueType(), DAG);
+ SDOperand RHS = BuildSplatI(SextVal-15, SplatSize, Op.getValueType(),DAG);
+ return DAG.getNode(ISD::ADD, Op.getValueType(), LHS, RHS);
+
+ }
// If this is 0x8000_0000 x 4, turn into vspltisw + vslw. If it is