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core: Add name parameter to gen_{var_alloc,store_target} 

This allows variables in the IR to be assigned a custom name as opposed
to names with a default prefix.
This commit is contained in:
David Mak 2023-09-06 11:00:02 +08:00
parent 049908044a
commit ff23968544
4 changed files with 23 additions and 19 deletions
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8
nac3artiq/src/codegen.rs
View File

@ -84,7 +84,7 @@ impl<'b> CodeGenerator for ArtiqCodeGenerator<'b> {
.try_as_basic_value()
.left()
.unwrap();
let end_store = self.gen_store_target(ctx, &end)?;
let end_store = self.gen_store_target(ctx, &end, None)?;
ctx.builder.build_store(end_store, max);
}
if let Some(start) = self.start.clone() {
@ -140,7 +140,7 @@ impl<'b> CodeGenerator for ArtiqCodeGenerator<'b> {
node: ExprKind::Name { id: start, ctx: name_ctx.clone() },
custom: Some(ctx.primitives.int64),
};
let start = self.gen_store_target(ctx, &start_expr)?;
let start = self.gen_store_target(ctx, &start_expr, None)?;
ctx.builder.build_store(start, now);
Ok(Some(start_expr)) as Result<_, String>
},
@ -153,7 +153,7 @@ impl<'b> CodeGenerator for ArtiqCodeGenerator<'b> {
node: ExprKind::Name { id: end, ctx: name_ctx.clone() },
custom: Some(ctx.primitives.int64),
};
let end = self.gen_store_target(ctx, &end_expr)?;
let end = self.gen_store_target(ctx, &end_expr, None)?;
ctx.builder.build_store(end, now);
self.end = Some(end_expr);
self.name_counter += 1;
@ -204,7 +204,7 @@ impl<'b> CodeGenerator for ArtiqCodeGenerator<'b> {
.try_as_basic_value()
.left()
.unwrap();
let outer_end = self.gen_store_target(ctx, old_end)?;
let outer_end = self.gen_store_target(ctx, old_end, None)?;
ctx.builder.build_store(outer_end, max);
}
self.start = old_start;

6
nac3core/src/codegen/expr.rs
View File

@ -810,7 +810,7 @@ pub fn gen_comprehension<'ctx, 'a, G: CodeGenerator>(
let zero_size_t = size_t.const_zero();
let zero_32 = int32.const_zero();
let index = generator.gen_var_alloc(ctx, size_t.into())?;
let index = generator.gen_var_alloc(ctx, size_t.into(), None)?;
ctx.builder.build_store(index, zero_size_t);
let elem_ty = ctx.get_llvm_type(generator, elt.custom.unwrap());
@ -853,7 +853,7 @@ pub fn gen_comprehension<'ctx, 'a, G: CodeGenerator>(
list_content =
ctx.build_gep_and_load(list, &[zero_size_t, zero_32]).into_pointer_value();
let i = generator.gen_store_target(ctx, target)?;
let i = generator.gen_store_target(ctx, target, None)?;
ctx.builder.build_store(i, ctx.builder.build_int_sub(start, step, "start_init"));
ctx.builder.build_unconditional_branch(test_bb);
ctx.builder.position_at_end(test_bb);
@ -888,7 +888,7 @@ pub fn gen_comprehension<'ctx, 'a, G: CodeGenerator>(
list = allocate_list(generator, ctx, elem_ty, length);
list_content =
ctx.build_gep_and_load(list, &[zero_size_t, zero_32]).into_pointer_value();
let counter = generator.gen_var_alloc(ctx, size_t.into())?;
let counter = generator.gen_var_alloc(ctx, size_t.into(), None)?;
// counter = -1
ctx.builder.build_store(counter, size_t.const_int(u64::max_value(), true));
ctx.builder.build_unconditional_branch(test_bb);

6
nac3core/src/codegen/generator.rs
View File

@ -87,8 +87,9 @@ pub trait CodeGenerator {
&mut self,
ctx: &mut CodeGenContext<'ctx, 'a>,
ty: BasicTypeEnum<'ctx>,
name: Option<&str>,
) -> Result<PointerValue<'ctx>, String> {
gen_var(ctx, ty)
gen_var(ctx, ty, name)
}
/// Return a pointer pointing to the target of the expression.
@ -96,11 +97,12 @@ pub trait CodeGenerator {
&mut self,
ctx: &mut CodeGenContext<'ctx, 'a>,
pattern: &Expr<Option<Type>>,
name: Option<&str>,
) -> Result<PointerValue<'ctx>, String>
where
Self: Sized,
{
gen_store_target(self, ctx, pattern)
gen_store_target(self, ctx, pattern, name)
}
/// Generate code for an assignment expression.

22
nac3core/src/codegen/stmt.rs
View File

@ -24,12 +24,13 @@ use std::convert::TryFrom;
pub fn gen_var<'ctx, 'a>(
ctx: &mut CodeGenContext<'ctx, 'a>,
ty: BasicTypeEnum<'ctx>,
name: Option<&str>,
) -> Result<PointerValue<'ctx>, String> {
// put the alloca in init block
let current = ctx.builder.get_insert_block().unwrap();
// position before the last branching instruction...
ctx.builder.position_before(&ctx.init_bb.get_last_instruction().unwrap());
let ptr = ctx.builder.build_alloca(ty, "tmp");
let ptr = ctx.builder.build_alloca(ty, name.unwrap_or("tmp"));
ctx.builder.position_at_end(current);
Ok(ptr)
}
@ -38,6 +39,7 @@ pub fn gen_store_target<'ctx, 'a, G: CodeGenerator>(
generator: &mut G,
ctx: &mut CodeGenContext<'ctx, 'a>,
pattern: &Expr<Option<Type>>,
name: Option<&str>,
) -> Result<PointerValue<'ctx>, String> {
// very similar to gen_expr, but we don't do an extra load at the end
// and we flatten nested tuples
@ -45,7 +47,7 @@ pub fn gen_store_target<'ctx, 'a, G: CodeGenerator>(
ExprKind::Name { id, .. } => match ctx.var_assignment.get(id) {
None => {
let ptr_ty = ctx.get_llvm_type(generator, pattern.custom.unwrap());
let ptr = generator.gen_var_alloc(ctx, ptr_ty)?;
let ptr = generator.gen_var_alloc(ctx, ptr_ty, name)?;
ctx.var_assignment.insert(*id, (ptr, None, 0));
ptr
}
@ -74,7 +76,7 @@ pub fn gen_store_target<'ctx, 'a, G: CodeGenerator>(
ctx.ctx.i32_type().const_zero(),
ctx.ctx.i32_type().const_int(index as u64, false),
],
"attr",
name.unwrap_or("attr"),
)
}
}
@ -135,7 +137,7 @@ pub fn gen_store_target<'ctx, 'a, G: CodeGenerator>(
let arr_ptr = ctx
.build_gep_and_load(v, &[i32_type.const_zero(), i32_type.const_zero()])
.into_pointer_value();
ctx.builder.build_gep(arr_ptr, &[index], "loadarrgep")
ctx.builder.build_gep(arr_ptr, &[index], name.unwrap_or("loadarrgep"))
}
}
_ => unreachable!(),
@ -191,7 +193,7 @@ pub fn gen_assign<'ctx, 'a, G: CodeGenerator>(
}
}
_ => {
let ptr = generator.gen_store_target(ctx, target)?;
let ptr = generator.gen_store_target(ctx, target, None)?;
if let ExprKind::Name { id, .. } = &target.node {
let (_, static_value, counter) = ctx.var_assignment.get_mut(id).unwrap();
*counter += 1;
@ -237,8 +239,8 @@ pub fn gen_for<'ctx, 'a, G: CodeGenerator>(
if ctx.unifier.unioned(iter.custom.unwrap(), ctx.primitives.range) {
// setup
let iter_val = iter_val.into_pointer_value();
let i = generator.gen_var_alloc(ctx, int32.into())?;
let user_i = generator.gen_store_target(ctx, target)?;
let i = generator.gen_var_alloc(ctx, int32.into(), None)?;
let user_i = generator.gen_store_target(ctx, target, None)?;
let (start, end, step) = destructure_range(ctx, iter_val);
ctx.builder.build_store(i, ctx.builder.build_int_sub(start, step, "start_init"));
ctx.builder.build_unconditional_branch(test_bb);
@ -270,7 +272,7 @@ pub fn gen_for<'ctx, 'a, G: CodeGenerator>(
);
ctx.builder.position_at_end(body_bb);
} else {
let counter = generator.gen_var_alloc(ctx, size_t.into())?;
let counter = generator.gen_var_alloc(ctx, size_t.into(), None)?;
// counter = -1
ctx.builder.build_store(counter, size_t.const_int(u64::max_value(), true));
let len = ctx
@ -655,7 +657,7 @@ pub fn gen_try<'ctx, 'a, G: CodeGenerator>(
let mut final_data = None;
let has_cleanup = !finalbody.is_empty();
if has_cleanup {
let final_state = generator.gen_var_alloc(ctx, ptr_type.into())?;
let final_state = generator.gen_var_alloc(ctx, ptr_type.into(), None)?;
final_data = Some((final_state, Vec::new(), Vec::new()));
if let Some((continue_target, break_target)) = ctx.loop_target {
let break_proxy = ctx.ctx.append_basic_block(current_fun, "try.break");
@ -821,7 +823,7 @@ pub fn gen_try<'ctx, 'a, G: CodeGenerator>(
ctx.builder.position_at_end(handler_bb);
if let Some(name) = name {
let exn_ty = ctx.get_llvm_type(generator, type_.as_ref().unwrap().custom.unwrap());
let exn_store = generator.gen_var_alloc(ctx, exn_ty)?;
let exn_store = generator.gen_var_alloc(ctx, exn_ty, None)?;
ctx.var_assignment.insert(*name, (exn_store, None, 0));
ctx.builder.build_store(exn_store, exn.as_basic_value());
}