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If expression fix (#249) #250

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sb10q merged 2 commits from if_expr_fix into master 2022-03-29 06:54:00 +08:00
Conversation 0 Commits 2 Files Changed 2 +22 -7
2 changed files with 22 additions and 7 deletions
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14
nac3core/src/codegen/expr.rs
View File

@ -1240,17 +1240,23 @@ pub fn gen_expr<'ctx, 'a, G: CodeGenerator>(
let cont_bb = ctx.ctx.append_basic_block(current, "cont");
ctx.builder.build_conditional_branch(test, then_bb, else_bb);
ctx.builder.position_at_end(then_bb);
let a = generator.gen_expr(ctx, body)?.unwrap().to_basic_value_enum(ctx, generator)?;
let a = generator.gen_expr(ctx, body)?;
match result {
None => None,
Some(v) => Some(ctx.builder.build_store(v, a))
Some(v) => {
let a = a.unwrap().to_basic_value_enum(ctx, generator)?;
Some(ctx.builder.build_store(v, a))
}
};
ctx.builder.build_unconditional_branch(cont_bb);
ctx.builder.position_at_end(else_bb);
let b = generator.gen_expr(ctx, orelse)?.unwrap().to_basic_value_enum(ctx, generator)?;
let b = generator.gen_expr(ctx, orelse)?;
match result {
None => None,
Some(v) => Some(ctx.builder.build_store(v, b))
Some(v) => {
let b = b.unwrap().to_basic_value_enum(ctx, generator)?;
Some(ctx.builder.build_store(v, b))
}
};
ctx.builder.build_unconditional_branch(cont_bb);
ctx.builder.position_at_end(cont_bb);

13
nac3core/src/codegen/test.rs
View File

@ -185,8 +185,17 @@ fn test_primitives() {
init:
%add = add i32 %0, %1
%cmp = icmp eq i32 %add, 1
%ifexpr = select i1 %cmp, i32 %0, i32 0
ret i32 %ifexpr
br i1 %cmp, label %then, label %else
then: ; preds = %init
br label %cont
else: ; preds = %init
br label %cont
cont: ; preds = %else, %then
%if_exp_result.0 = phi i32 [ %0, %then ], [ 0, %else ]
ret i32 %if_exp_result.0
}
"}
.trim();