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Move pass managers into llvm::build

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This commit is contained in:
Richard Feldman 2020-03-28 17:26:03 -04:00
parent 656bf5ccf8
commit 0a0a736153
2 changed files with 30 additions and 32 deletions
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20
compiler/gen/src/llvm/build.rs
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@ -3,6 +3,7 @@ use bumpalo::Bump;
use inkwell::builder::Builder;
use inkwell::context::Context;
use inkwell::module::{Linkage, Module};
use inkwell::passes::PassManager;
use inkwell::types::{BasicTypeEnum, IntType, StructType};
use inkwell::values::BasicValueEnum::{self, *};
use inkwell::values::{FunctionValue, IntValue, PointerValue, StructValue};
@ -45,6 +46,25 @@ impl<'a, 'ctx, 'env> Env<'a, 'ctx, 'env> {
}
}
pub fn add_passes(fpm: &PassManager<FunctionValue<'_>>) {
// tail-call elimination is always on
fpm.add_instruction_combining_pass();
fpm.add_tail_call_elimination_pass();
// Enable more optimizations when running cargo test --release
if !cfg!(debug_assertions) {
fpm.add_reassociate_pass();
fpm.add_basic_alias_analysis_pass();
fpm.add_promote_memory_to_register_pass();
fpm.add_cfg_simplification_pass();
fpm.add_gvn_pass();
// TODO figure out why enabling any of these (even alone) causes LLVM to segfault
// fpm.add_strip_dead_prototypes_pass();
// fpm.add_dead_arg_elimination_pass();
// fpm.add_function_inlining_pass();
}
}
#[allow(clippy::cognitive_complexity)]
pub fn build_expr<'a, 'ctx, 'env>(
env: &Env<'a, 'ctx, 'env>,