Emerge Yul recompiler (#1)

Provide a modified (and incomplete) version of ZKSync zksolc that can compile the most basic contracts

crates/llvm-context/src/eravm/evm/arithmetic.rs

@@ -0,0 +1,149 @@
+//!
+//! Translates the arithmetic operations.
+//!
+
+use inkwell::values::BasicValue;
+
+use crate::eravm::context::Context;
+use crate::eravm::Dependency;
+
+///
+/// Translates the arithmetic addition.
+///
+pub fn addition<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .builder()
+        .build_int_add(operand_1, operand_2, "addition_result")?
+        .as_basic_value_enum())
+}
+
+///
+/// Translates the arithmetic subtraction.
+///
+pub fn subtraction<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .builder()
+        .build_int_sub(operand_1, operand_2, "subtraction_result")?
+        .as_basic_value_enum())
+}
+
+///
+/// Translates the arithmetic multiplication.
+///
+pub fn multiplication<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .builder()
+        .build_int_mul(operand_1, operand_2, "multiplication_result")?
+        .as_basic_value_enum())
+}
+
+///
+/// Translates the arithmetic division.
+///
+pub fn division<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .builder()
+        .build_int_unsigned_div(operand_1, operand_2, "udiv")?
+        .into())
+}
+
+///
+/// Translates the arithmetic remainder.
+///
+pub fn remainder<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .build_call(
+            context.llvm_runtime().r#mod,
+            &[
+                operand_1.as_basic_value_enum(),
+                operand_2.as_basic_value_enum(),
+            ],
+            "add_mod_call",
+        )
+        .expect("Always exists"))
+}
+
+///
+/// Translates the signed arithmetic division.
+///
+/// Two differences between the EVM and LLVM IR:
+/// 1. In case of division by zero, 0 is returned.
+/// 2. In case of overflow, the first argument is returned.
+///
+pub fn division_signed<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .build_call(
+            context.llvm_runtime().sdiv,
+            &[
+                operand_1.as_basic_value_enum(),
+                operand_2.as_basic_value_enum(),
+            ],
+            "add_mod_call",
+        )
+        .expect("Always exists"))
+}
+
+///
+/// Translates the signed arithmetic remainder.
+///
+pub fn remainder_signed<'ctx, D>(
+    context: &mut Context<'ctx, D>,
+    operand_1: inkwell::values::IntValue<'ctx>,
+    operand_2: inkwell::values::IntValue<'ctx>,
+) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
+where
+    D: Dependency + Clone,
+{
+    Ok(context
+        .build_call(
+            context.llvm_runtime().smod,
+            &[
+                operand_1.as_basic_value_enum(),
+                operand_2.as_basic_value_enum(),
+            ],
+            "add_mod_call",
+        )
+        .expect("Always exists"))
+}