[Turbofan] Add more integer SIMD operations for ARM.

src/compiler/code-generator-impl.h

Index: src/compiler/code-generator-impl.h
diff --git a/src/compiler/code-generator-impl.h b/src/compiler/code-generator-impl.h
index 8bf3a9ea4e3bbc9a1801f284fa935b12b0eb8f47..bdedbecf26cd5bd20251b1725c94adf557fa95d9 100644
--- a/src/compiler/code-generator-impl.h
+++ b/src/compiler/code-generator-impl.h
@@ -67,6 +67,14 @@ class InstructionOperandConverter {
     return static_cast<int16_t>(InputInt32(index));
   }
 
+  uint8_t InputInt3(size_t index) {
+    return static_cast<uint8_t>(InputInt32(index) & 0x7);
+  }
+
+  uint8_t InputInt4(size_t index) {
+    return static_cast<uint8_t>(InputInt32(index) & 0xF);
+  }
+
   uint8_t InputInt5(size_t index) {
     return static_cast<uint8_t>(InputInt32(index) & 0x1F);
   }