diff --git a/ptx/src/pass/convert_to_stateful_memory_access.rs b/ptx/src/pass/convert_to_stateful_memory_access.rs
index 61b31ad..ad4b473 100644
--- a/ptx/src/pass/convert_to_stateful_memory_access.rs
+++ b/ptx/src/pass/convert_to_stateful_memory_access.rs
@@ -475,7 +475,7 @@ fn convert_to_stateful_memory_access_postprocess(
                 let (old_operand_type, old_operand_space, _) = id_defs.get_typed(operand)?;
                 let converting_id = id_defs
                     .register_intermediate(Some((old_operand_type.clone(), old_operand_space)));
-                let kind = if state_is_compatible(new_operand_space, ast::StateSpace::Reg) {
+                let kind = if space_is_compatible(new_operand_space, ast::StateSpace::Reg) {
                     ConversionKind::Default
                 } else {
                     ConversionKind::PtrToPtr
diff --git a/ptx/src/pass/expand_arguments.rs b/ptx/src/pass/expand_arguments.rs
index bc01ab0..d0c7c98 100644
--- a/ptx/src/pass/expand_arguments.rs
+++ b/ptx/src/pass/expand_arguments.rs
@@ -65,7 +65,7 @@ impl<'a, 'b> FlattenArguments<'a, 'b> {
         };
         if state_space == ast::StateSpace::Reg || state_space == ast::StateSpace::Sreg {
             let (reg_type, reg_space) = self.id_def.get_typed(reg)?;
-            if !state_is_compatible(reg_space, ast::StateSpace::Reg) {
+            if !space_is_compatible(reg_space, ast::StateSpace::Reg) {
                 return Err(error_mismatched_type());
             }
             let reg_scalar_type = match reg_type {
diff --git a/ptx/src/pass/insert_implicit_conversions.rs b/ptx/src/pass/insert_implicit_conversions.rs
index baf3453..0dce598 100644
--- a/ptx/src/pass/insert_implicit_conversions.rs
+++ b/ptx/src/pass/insert_implicit_conversions.rs
@@ -127,7 +127,22 @@ fn default_implicit_conversion(
     (operand_space, operand_type): (ast::StateSpace, &ast::Type),
     (instruction_space, instruction_type): (ast::StateSpace, &ast::Type),
 ) -> Result<Option<ConversionKind>, TranslateError> {
-    if !state_is_compatible(instruction_space, operand_space) {
+    if instruction_space == ast::StateSpace::Reg {
+        if space_is_compatible(operand_space, ast::StateSpace::Reg) {
+            if let (ast::Type::Vector(vec_underlying_type, vec_len), ast::Type::Scalar(scalar)) =
+                (operand_type, instruction_type)
+            {
+                if scalar.kind() == ast::ScalarKind::Bit
+                    && scalar.size_of() == (vec_underlying_type.size_of() * vec_len)
+                {
+                    return Ok(Some(ConversionKind::Default));
+                }
+            }
+        } else if is_addressable(operand_space) {
+            return Ok(Some(ConversionKind::AddressOf));
+        }
+    }
+    if !space_is_compatible(instruction_space, operand_space) {
         default_implicit_conversion_space(
             (operand_space, operand_type),
             (instruction_space, instruction_type),
@@ -139,6 +154,21 @@ fn default_implicit_conversion(
     }
 }
 
+fn is_addressable(this: ast::StateSpace) -> bool {
+    match this {
+        ast::StateSpace::Const
+        | ast::StateSpace::Generic
+        | ast::StateSpace::Global
+        | ast::StateSpace::Local
+        | ast::StateSpace::Shared => true,
+        ast::StateSpace::Param | ast::StateSpace::Reg | ast::StateSpace::Sreg => false,
+        ast::StateSpace::SharedCluster
+        | ast::StateSpace::SharedCta
+        | ast::StateSpace::ParamEntry
+        | ast::StateSpace::ParamFunc => todo!(),
+    }
+}
+
 // Space is different
 fn default_implicit_conversion_space(
     (operand_space, operand_type): (ast::StateSpace, &ast::Type),
@@ -148,7 +178,7 @@ fn default_implicit_conversion_space(
         || (operand_space == ast::StateSpace::Generic && coerces_to_generic(instruction_space))
     {
         Ok(Some(ConversionKind::PtrToPtr))
-    } else if state_is_compatible(operand_space, ast::StateSpace::Reg) {
+    } else if space_is_compatible(operand_space, ast::StateSpace::Reg) {
         match operand_type {
             ast::Type::Pointer(operand_ptr_type, operand_ptr_space)
                 if *operand_ptr_space == instruction_space =>
@@ -180,7 +210,7 @@ fn default_implicit_conversion_space(
             },
             _ => Err(error_mismatched_type()),
         }
-    } else if state_is_compatible(instruction_space, ast::StateSpace::Reg) {
+    } else if space_is_compatible(instruction_space, ast::StateSpace::Reg) {
         match instruction_type {
             ast::Type::Pointer(instruction_ptr_type, instruction_ptr_space)
                 if operand_space == *instruction_ptr_space =>
@@ -204,7 +234,7 @@ fn default_implicit_conversion_type(
     operand_type: &ast::Type,
     instruction_type: &ast::Type,
 ) -> Result<Option<ConversionKind>, TranslateError> {
-    if state_is_compatible(space, ast::StateSpace::Reg) {
+    if space_is_compatible(space, ast::StateSpace::Reg) {
         if should_bitcast(instruction_type, operand_type) {
             Ok(Some(ConversionKind::Default))
         } else {
@@ -264,7 +294,7 @@ fn should_convert_relaxed_dst_wrapper(
     (operand_space, operand_type): (ast::StateSpace, &ast::Type),
     (instruction_space, instruction_type): (ast::StateSpace, &ast::Type),
 ) -> Result<Option<ConversionKind>, TranslateError> {
-    if !state_is_compatible(operand_space, instruction_space) {
+    if !space_is_compatible(operand_space, instruction_space) {
         return Err(error_mismatched_type());
     }
     if operand_type == instruction_type {
@@ -341,7 +371,7 @@ fn should_convert_relaxed_src_wrapper(
     (operand_space, operand_type): (ast::StateSpace, &ast::Type),
     (instruction_space, instruction_type): (ast::StateSpace, &ast::Type),
 ) -> Result<Option<ConversionKind>, TranslateError> {
-    if !state_is_compatible(operand_space, instruction_space) {
+    if !space_is_compatible(operand_space, instruction_space) {
         return Err(error_mismatched_type());
     }
     if operand_type == instruction_type {
diff --git a/ptx/src/pass/insert_mem_ssa_statements.rs b/ptx/src/pass/insert_mem_ssa_statements.rs
index 7369cdb..c1e30b0 100644
--- a/ptx/src/pass/insert_mem_ssa_statements.rs
+++ b/ptx/src/pass/insert_mem_ssa_statements.rs
@@ -189,7 +189,7 @@ impl<'a, 'input> InsertMemSSAVisitor<'a, 'input> {
             return Ok(symbol);
         };
         let (mut var_type, var_space, is_variable) = self.id_def.get_typed(symbol)?;
-        if !state_is_compatible(var_space, ast::StateSpace::Reg) || !is_variable {
+        if !space_is_compatible(var_space, ast::StateSpace::Reg) || !is_variable {
             return Ok(symbol);
         };
         let member_index = match member_index {
@@ -257,10 +257,9 @@ impl<'a, 'input> ast::VisitorMap<TypedOperand, TypedOperand, TranslateError>
                 TypedOperand::RegOffset(self.symbol(reg, None, type_space, is_dst)?, offset)
             }
             op @ TypedOperand::Imm(..) => op,
-            TypedOperand::VecMember(symbol, index) => TypedOperand::VecMember(
-                self.symbol(symbol, Some(index), type_space, is_dst)?,
-                index,
-            ),
+            TypedOperand::VecMember(symbol, index) => {
+                TypedOperand::Reg(self.symbol(symbol, Some(index), type_space, is_dst)?)
+            }
         })
     }
 
diff --git a/ptx/src/pass/mod.rs b/ptx/src/pass/mod.rs
index d0f4dfb..4ca2f02 100644
--- a/ptx/src/pass/mod.rs
+++ b/ptx/src/pass/mod.rs
@@ -1214,7 +1214,7 @@ impl<
     }
 }
 
-fn state_is_compatible(this: ast::StateSpace, other: ast::StateSpace) -> bool {
+fn space_is_compatible(this: ast::StateSpace, other: ast::StateSpace) -> bool {
     this == other
         || this == ast::StateSpace::Reg && other == ast::StateSpace::Sreg
         || this == ast::StateSpace::Sreg && other == ast::StateSpace::Reg