rename target to polkavm

Signed-off-by: xermicus <cyrill@parity.io>

crates/llvm-context/src/polkavm/context/debug_info.rs

@@ -0,0 +1,97 @@
+//! The LLVM debug information.
+
+use inkwell::debug_info::AsDIScope;
+use num::Zero;
+
+/// The LLVM debug information.
+pub struct DebugInfo<'ctx> {
+    /// The compile unit.
+    compile_unit: inkwell::debug_info::DICompileUnit<'ctx>,
+    /// The debug info builder.
+    builder: inkwell::debug_info::DebugInfoBuilder<'ctx>,
+}
+
+impl<'ctx> DebugInfo<'ctx> {
+    /// A shortcut constructor.
+    pub fn new(module: &inkwell::module::Module<'ctx>) -> Self {
+        let (builder, compile_unit) = module.create_debug_info_builder(
+            true,
+            inkwell::debug_info::DWARFSourceLanguage::C,
+            module.get_name().to_string_lossy().as_ref(),
+            "",
+            "",
+            false,
+            "",
+            0,
+            "",
+            inkwell::debug_info::DWARFEmissionKind::Full,
+            0,
+            false,
+            false,
+            "",
+            "",
+        );
+
+        Self {
+            compile_unit,
+            builder,
+        }
+    }
+
+    /// Creates a function info.
+    pub fn create_function(
+        &self,
+        name: &str,
+    ) -> anyhow::Result<inkwell::debug_info::DISubprogram<'ctx>> {
+        let subroutine_type = self.builder.create_subroutine_type(
+            self.compile_unit.get_file(),
+            Some(self.create_type(era_compiler_common::BIT_LENGTH_FIELD)?),
+            &[],
+            inkwell::debug_info::DIFlags::zero(),
+        );
+
+        let function = self.builder.create_function(
+            self.compile_unit.get_file().as_debug_info_scope(),
+            name,
+            None,
+            self.compile_unit.get_file(),
+            42,
+            subroutine_type,
+            true,
+            false,
+            1,
+            inkwell::debug_info::DIFlags::zero(),
+            false,
+        );
+
+        self.builder.create_lexical_block(
+            function.as_debug_info_scope(),
+            self.compile_unit.get_file(),
+            1,
+            1,
+        );
+
+        Ok(function)
+    }
+
+    /// Creates a primitive type info.
+    pub fn create_type(
+        &self,
+        bit_length: usize,
+    ) -> anyhow::Result<inkwell::debug_info::DIType<'ctx>> {
+        self.builder
+            .create_basic_type(
+                "U256",
+                bit_length as u64,
+                0,
+                inkwell::debug_info::DIFlags::zero(),
+            )
+            .map(|basic_type| basic_type.as_type())
+            .map_err(|error| anyhow::anyhow!("Debug info error: {}", error))
+    }
+
+    /// Finalizes the builder.
+    pub fn finalize(&self) {
+        self.builder.finalize();
+    }
+}