[simd.js] Add SIMD load functions for Phase 1.

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 112d947dbc132dbcc214b8c03465433537aedbea..3e776a530686711306920ba44214728c4a6bde4e 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -606,6 +606,10 @@ namespace internal {
   F(Float32x4FromInt32x4Bits, 1, 1)            \
   F(Float32x4FromInt16x8Bits, 1, 1)            \
   F(Float32x4FromInt8x16Bits, 1, 1)            \
+  F(Float32x4Load, 2, 1)                       \
+  F(Float32x4Load1, 2, 1)                      \
+  F(Float32x4Load2, 2, 1)                      \
+  F(Float32x4Load3, 2, 1)                      \
   F(Int32x4Check, 1, 1)                        \
   F(Int32x4ExtractLane, 2, 1)                  \
   F(Int32x4ReplaceLane, 3, 1)                  \
@@ -635,6 +639,10 @@ namespace internal {
   F(Int32x4FromFloat32x4Bits, 1, 1)            \
   F(Int32x4FromInt16x8Bits, 1, 1)              \
   F(Int32x4FromInt8x16Bits, 1, 1)              \
+  F(Int32x4Load, 2, 1)                         \
+  F(Int32x4Load1, 2, 1)                        \
+  F(Int32x4Load2, 2, 1)                        \
+  F(Int32x4Load3, 2, 1)                        \
   F(Bool32x4Check, 1, 1)                       \
   F(Bool32x4ExtractLane, 2, 1)                 \
   F(Bool32x4ReplaceLane, 3, 1)                 \
@@ -679,6 +687,7 @@ namespace internal {
   F(Int16x8FromFloat32x4Bits, 1, 1)            \
   F(Int16x8FromInt32x4Bits, 1, 1)              \
   F(Int16x8FromInt8x16Bits, 1, 1)              \
+  F(Int16x8Load, 2, 1)                         \
   F(Bool16x8Check, 1, 1)                       \
   F(Bool16x8ExtractLane, 2, 1)                 \
   F(Bool16x8ReplaceLane, 3, 1)                 \
@@ -723,6 +732,7 @@ namespace internal {
   F(Int8x16FromFloat32x4Bits, 1, 1)            \
   F(Int8x16FromInt32x4Bits, 1, 1)              \
   F(Int8x16FromInt16x8Bits, 1, 1)              \
+  F(Int8x16Load, 2, 1)                         \
   F(Bool8x16Check, 1, 1)                       \
   F(Bool8x16ExtractLane, 2, 1)                 \
   F(Bool8x16ReplaceLane, 3, 1)                 \