.bazelrc

build --cxxopt=-std=c++20
build --cxxopt=-Wall
build --cxxopt=-Wextra

# ========================================
# Performance Optimization Flags
# ========================================

# Basic optimization level
build --cxxopt=-O3

# Link-Time Optimization (LTO) - enables inter-procedural optimizations
build --cxxopt=-flto
build --linkopt=-flto

# CPU-specific optimizations (march=native uses all available CPU features)
build --cxxopt=-march=native
build --cxxopt=-mtune=native

# Fast math optimizations (be careful with floating point precision)
build --cxxopt=-ffast-math

# Inline optimizations
build --cxxopt=-finline-functions
build --cxxopt=-finline-limit=1000

# Loop optimizations
build --cxxopt=-ftree-vectorize
build --cxxopt=-funroll-loops

# Branch prediction optimizations
# build --cxxopt=-fprofile-use-path-prefix  # Not supported in GCC 13
build --cxxopt=-fpredictive-commoning

# Devirtualization and IPA optimizations
build --cxxopt=-fdevirtualize-at-ltrans
build --cxxopt=-fipa-pta

# Omit frame pointer for better performance (x86_64)
build --cxxopt=-fomit-frame-pointer

# No exceptions for better performance (if not needed)
# build --cxxopt=-fno-exceptions

# NDEBUG to disable assertions in release builds
build --cxxopt=-DNDEBUG

# Linker optimizations
build --linkopt=-Wl,-O2
build --linkopt=-Wl,--as-needed

# Strip debug symbols for smaller binary
# build --stripopt=always

# ========================================
# Architecture-specific SIMD optimizations
# ========================================
# Uncomment if you want to enable specific SIMD instruction sets
# build --cxxopt=-mavx2
# build --cxxopt=-msse4.2
# build --cxxopt=-mfma

# ========================================

# Use GCC 13 as the compiler (supports C++20 <format>)
build --repo_env=CC=/usr/bin/gcc-13
build --repo_env=CXX=/usr/bin/g++-13

# Enable color output
build --color=yes

# Show detailed test output
test --test_output=all