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use phi node in elem_loop

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This commit is contained in:
Folkert 2021-10-30 22:05:43 +02:00
parent 44e8fbc203
commit 29e7853b85
1 changed files with 8 additions and 6 deletions
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14
compiler/gen_llvm/src/llvm/build_list.rs
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@ -965,6 +965,8 @@ where
let ctx = env.context;
let builder = env.builder;
let entry = env.builder.get_insert_block().unwrap();
// constant 1i64
let one = env.ptr_int().const_int(1, false);
@ -976,15 +978,15 @@ where
builder.build_unconditional_branch(loop_bb);
builder.position_at_end(loop_bb);
let curr_index = builder
.build_load(index_alloca, index_name)
.into_int_value();
let next_index = builder.build_int_add(curr_index, one, "nextindex");
let current_index_phi = env.builder.build_phi(env.ptr_int(), "current_index");
let current_index = current_index_phi.as_basic_value().into_int_value();
builder.build_store(index_alloca, next_index);
let next_index = builder.build_int_add(current_index, one, "next_index");
current_index_phi.add_incoming(&[(&next_index, loop_bb), (&env.ptr_int().const_zero(), entry)]);
// The body of the loop
loop_fn(curr_index);
loop_fn(current_index);
// #index < end
let loop_end_cond = bounds_check_comparison(builder, next_index, end);