Automates the process of transforming a Swift file through the various stages of compilation: from Swift code to SIL, from SIL to LLVM IR, and finally to assembly.

compile_swift_steps.sh

#!/bin/bash

# Check if an argument (Swift file name) was provided
if [ "$#" -ne 1 ]; then
    echo "Usage: $0 <Swift File>"
    exit 1
fi

SWIFT_FILE=$1
BASE_NAME=${SWIFT_FILE%.*}

# Get script name without the path and extension for folder naming
SCRIPT_NAME=$(basename "$0" .sh)

# Create a timestamp in the format of YearMonthDay-HourMinuteSecond (e.g., 20230415-123045)
TIMESTAMP=$(date "+%Y%m%d-%H%M%S")

# Create a directory with the script name and timestamp
OUTPUT_DIR="${SCRIPT_NAME}_${TIMESTAMP}"
mkdir -p "$OUTPUT_DIR"

# Ensure the file exists
if [ ! -f "$SWIFT_FILE" ]; then
    echo "File not found: $SWIFT_FILE"
    exit 1
fi

echo "Compiling $SWIFT_FILE into directory $OUTPUT_DIR..."

# Step 1: Compile Swift to SIL
echo "Emitting SIL..."
swiftc -emit-sil "$SWIFT_FILE" > "${OUTPUT_DIR}/${BASE_NAME}.sil"
echo "SIL output saved to ${OUTPUT_DIR}/${BASE_NAME}.sil"

# Step 2: Compile Swift to LLVM IR
echo "Emitting LLVM IR..."
swiftc -emit-ir "$SWIFT_FILE" > "${OUTPUT_DIR}/${BASE_NAME}.ll"
echo "LLVM IR output saved to ${OUTPUT_DIR}/${BASE_NAME}.ll"

# Step 3: Compile Swift to Assembly
echo "Emitting Assembly..."
swiftc -S "$SWIFT_FILE" > "${OUTPUT_DIR}/${BASE_NAME}.s"
echo "Assembly output saved to ${OUTPUT_DIR}/${BASE_NAME}.s"

# Final Compilation (optional, uncomment if desired)
# echo "Compiling to executable..."
# swiftc "$SWIFT_FILE" -o "${OUTPUT_DIR}/${BASE_NAME}"
# echo "Executable created: ${OUTPUT_DIR}/${BASE_NAME}"

echo "Compilation steps completed."