[X86] Add costs for SSE zext/sext to v4i64 to TTI

The costs are somewhat hand-wavy, but should be much closer to the truth
than what we get from BasicTTI.

Differential Revision: http://reviews.llvm.org/D21156

llvm-svn: 272406

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 1baa49c3c08..c86790a9326 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -709,6 +709,13 @@ int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) {
   };
 
   static const TypeConversionCostTblEntry SSE41ConversionTbl[] = {
+    { ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32,   2 },
+    { ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i32,   2 },
+    { ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i16,   2 },
+    { ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i16,   2 },
+    { ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i8,    2 },
+    { ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i8,    2 },
+
     { ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 4 },
     { ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 4 },
     { ISD::ZERO_EXTEND, MVT::v8i32,  MVT::v8i16,  2 },
@@ -759,6 +766,13 @@ int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) {
     { ISD::SINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 },
     { ISD::SINT_TO_FP, MVT::v4f32, MVT::v16i8, 8 },
 
+    { ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32,   3 },
+    { ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i32,   5 },
+    { ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i16,   3 },
+    { ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i16,  10 },
+    { ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i8,    4 },
+    { ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i8,    8 },
+
     { ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 6 },
     { ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 8 },
     { ISD::ZERO_EXTEND, MVT::v8i32,  MVT::v8i16,  3 },