Merge pull request #457 from rustcoreutils/updates

Updates

Author: jgarzik

cc/arch/aarch64/codegen.rs

@@ -13,6 +13,29 @@ use crate::ir::{Function, Module, Opcode};
 use crate::target::Target;
 use crate::types::TypeTable;
 
+// ============================================================================
+// Shared Helper Types
+// ============================================================================
+
+/// Unary integer operation type
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum UnaryOp {
+    Neg,
+    Not,
+}
+
+/// Byte-swap size
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BswapSize {
+    B16,
+    B32,
+    B64,
+}
+
+// ============================================================================
+// Constants
+// ============================================================================
+
 /// pcc version string for assembly header
 pub const PCC_VERSION: &str = env!("CARGO_PKG_VERSION");
 

cc/arch/codegen.rs

@@ -14,6 +14,7 @@
 //
 
 use crate::target::{Os, Target};
+use crate::types::{TypeId, TypeKind, TypeTable};
 use std::fmt::{self, Write};
 
 // ============================================================================
@@ -120,6 +121,22 @@ impl fmt::Display for FpSize {
     }
 }
 
+// ============================================================================
+// Complex Type Helpers
+// ============================================================================
+
+/// Get FpSize and element offset for a complex type's components.
+/// Returns (FpSize for each component, byte offset to imaginary part).
+pub fn complex_fp_info(types: &TypeTable, complex_typ: TypeId) -> (FpSize, i32) {
+    let base = types.complex_base(complex_typ);
+    match types.kind(base) {
+        TypeKind::Float => (FpSize::Single, 4),
+        TypeKind::Double => (FpSize::Double, 8),
+        TypeKind::LongDouble => (FpSize::Double, 8), // TODO: arch-specific
+        _ => (FpSize::Double, 8),                    // fallback
+    }
+}
+
 // ============================================================================
 // Labels and Symbols
 // ============================================================================