Rename num_bits to bitw and de-pub the relevant attribute.

This brings this part of the AOT IR in line with recent changes to the
JIT IR.

ykrt/src/compile/jitc_yk/aot_ir.rs

@@ -1591,29 +1591,29 @@ pub(crate) fn const_int_bytes_to_string(num_bits: u32, bytes: &[u8]) -> String {
 #[deku_derive(DekuRead)]
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub(crate) struct IntegerTy {
-    pub(crate) num_bits: u32,
+    bitw: u32,
 }
 
 impl IntegerTy {
     /// Create a new integer type with the specified number of bits.
     #[cfg(test)]
-    pub(crate) fn new(num_bits: u32) -> Self {
-        debug_assert!(num_bits > 0 && num_bits <= 0x800000);
-        Self { num_bits }
+    pub(crate) fn new(bitw: u32) -> Self {
+        debug_assert!(bitw > 0 && bitw <= 0x800000);
+        Self { bitw }
     }
 
     /// Return the number of bits (1..2^23 (inc.)) this integer spans.
-    pub(crate) fn num_bits(&self) -> u32 {
-        debug_assert!(self.num_bits > 0 && self.num_bits <= 0x800000);
-        self.num_bits
+    pub(crate) fn bitw(&self) -> u32 {
+        debug_assert!(self.bitw > 0 && self.bitw <= 0x800000);
+        self.bitw
     }
 
     /// Return the number of bytes required to store this integer type.
     ///
     /// Padding for alignment is not included.
     #[cfg(test)]
     pub(crate) fn byte_size(&self) -> usize {
-        let bits = self.num_bits();
+        let bits = self.bitw();
         let mut ret = bits / 8;
         // If it wasn't an exactly byte-sized thing, round up to the next byte.
         if bits % 8 != 0 {
@@ -1624,13 +1624,13 @@ impl IntegerTy {
 
     /// Format a constant integer value that is of the type described by `self`.
     fn const_to_string(&self, c: &ConstVal) -> String {
-        const_int_bytes_to_string(self.num_bits, c.bytes())
+        const_int_bytes_to_string(self.bitw, c.bytes())
     }
 }
 
 impl Display for IntegerTy {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "i{}", self.num_bits)
+        write!(f, "i{}", self.bitw)
     }
 }
 
@@ -2022,7 +2022,7 @@ mod tests {
             let bytes = ToBytes::to_ne_bytes(&num).as_ref().to_vec();
 
             // Construct an IR constant and check it stringifies ok.
-            let it = IntegerTy { num_bits };
+            let it = IntegerTy { bitw: num_bits };
             let c = ConstVal {
                 tyidx: TyIdx::new(0),
                 bytes,
@@ -2125,7 +2125,7 @@ mod tests {
         let mut m = Module::default();
 
         let i8_tyidx = TyIdx::new(m.types.len());
-        m.types.push(Ty::Integer(IntegerTy { num_bits: 8 }));
+        m.types.push(Ty::Integer(IntegerTy { bitw: 8 }));
         let void_tyidx = TyIdx::new(m.types.len());
         m.types.push(Ty::Void);
 

ykrt/src/compile/jitc_yk/trace_builder.rs

@@ -152,7 +152,7 @@ impl<Register: Send + Sync + 'static> TraceBuilder<Register> {
             } = inst
             {
                 let width_bits = match self.aot_mod.type_(*tyidx) {
-                    aot_ir::Ty::Integer(it) => it.num_bits(),
+                    aot_ir::Ty::Integer(x) => x.bitw(),
                     _ => unreachable!(),
                 };
                 let width_bytes = usize::try_from(width_bits.div_ceil(8)).unwrap();
@@ -347,10 +347,10 @@ impl<Register: Send + Sync + 'static> TraceBuilder<Register> {
         let aot_const = aot_const.unwrap_val();
         let bytes = aot_const.bytes();
         match self.aot_mod.type_(aot_const.tyidx()) {
-            aot_ir::Ty::Integer(aot_ir::IntegerTy { num_bits }) => {
+            aot_ir::Ty::Integer(x) => {
                 // FIXME: It would be better if the AOT IR had converted these integers in advance
                 // rather than doing this dance here.
-                let x = match num_bits {
+                let v = match x.bitw() {
                     1 | 8 => {
                         debug_assert_eq!(bytes.len(), 1);
                         u64::from(bytes[0])
@@ -370,10 +370,10 @@ impl<Register: Send + Sync + 'static> TraceBuilder<Register> {
                             bytes[7],
                         ])
                     }
-                    _ => todo!("{}", num_bits),
+                    _ => todo!("{}", x.bitw()),
                 };
-                let jit_tyidx = self.jit_mod.insert_ty(jit_ir::Ty::Integer(*num_bits))?;
-                Ok(jit_ir::Const::Int(jit_tyidx, x))
+                let jit_tyidx = self.jit_mod.insert_ty(jit_ir::Ty::Integer(x.bitw()))?;
+                Ok(jit_ir::Const::Int(jit_tyidx, v))
             }
             aot_ir::Ty::Float(fty) => {
                 let jit_tyidx = self.jit_mod.insert_ty(jit_ir::Ty::Float(fty.clone()))?;
@@ -422,7 +422,7 @@ impl<Register: Send + Sync + 'static> TraceBuilder<Register> {
     fn handle_type(&mut self, aot_type: &aot_ir::Ty) -> Result<jit_ir::TyIdx, CompilationError> {
         let jit_ty = match aot_type {
             aot_ir::Ty::Void => jit_ir::Ty::Void,
-            aot_ir::Ty::Integer(it) => jit_ir::Ty::Integer(it.num_bits()),
+            aot_ir::Ty::Integer(x) => jit_ir::Ty::Integer(x.bitw()),
             aot_ir::Ty::Ptr => jit_ir::Ty::Ptr,
             aot_ir::Ty::Func(ft) => {
                 let mut jit_args = Vec::new();