Vector element extraction without stack operations on Power 8
This patch corresponds to review:
http://reviews.llvm.org/D12032
This patch builds onto the patch that provided scalar to vector conversions
without stack operations (D11471).
Included in this patch:
- Vector element extraction for all vector types with constant element number
- Vector element extraction for v16i8 and v8i16 with variable element number
- Removal of some unnecessary COPY_TO_REGCLASS operations that ended up
unnecessarily moving things around between registers
Not included in this patch (will be in upcoming patch):
- Vector element extraction for v4i32, v4f32, v2i64 and v2f64 with
variable element number
- Vector element insertion for variable/constant element number
Testing is provided for all extractions. The extractions that are not
implemented yet are just placeholders.
llvm-svn: 249822
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index b7dbd74..52f10da 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -543,14 +543,21 @@
if (Subtarget.hasVSX()) {
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v2f64, Legal);
- if (Subtarget.hasP8Vector())
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2f64, Legal);
+ if (Subtarget.hasP8Vector()) {
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v4f32, Legal);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v4f32, Legal);
+ }
if (Subtarget.hasDirectMove()) {
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v16i8, Legal);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v8i16, Legal);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v4i32, Legal);
// FIXME: this is causing bootstrap failures, disable temporarily
//setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v2i64, Legal);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v16i8, Legal);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v8i16, Legal);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v4i32, Legal);
+ setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2i64, Legal);
}
setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2f64, Legal);