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Support TenraryIfAddr in lb_build_addr

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gingerBill
2021-10-21 11:46:32 +01:00
parent 7aac8df2f2
commit 1405420935
1 changed files with 37 additions and 0 deletions
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37
src/llvm_backend_expr.cpp
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@@ -3809,6 +3809,43 @@ lbAddr lb_build_addr(lbProcedure *p, Ast *expr) {
case_ast_node(ac, AutoCast, expr);
return lb_build_addr(p, ac->expr);
case_end;
case_ast_node(te, TernaryIfExpr, expr);
LLVMValueRef incoming_values[2] = {};
LLVMBasicBlockRef incoming_blocks[2] = {};
GB_ASSERT(te->y != nullptr);
lbBlock *then = lb_create_block(p, "if.then");
lbBlock *done = lb_create_block(p, "if.done"); // NOTE(bill): Append later
lbBlock *else_ = lb_create_block(p, "if.else");
lbValue cond = lb_build_cond(p, te->cond, then, else_);
lb_start_block(p, then);
Type *ptr_type = alloc_type_pointer(default_type(type_of_expr(expr)));
incoming_values[0] = lb_emit_conv(p, lb_build_addr_ptr(p, te->x), ptr_type).value;
lb_emit_jump(p, done);
lb_start_block(p, else_);
incoming_values[1] = lb_emit_conv(p, lb_build_addr_ptr(p, te->y), ptr_type).value;
lb_emit_jump(p, done);
lb_start_block(p, done);
lbValue res = {};
res.value = LLVMBuildPhi(p->builder, lb_type(p->module, ptr_type), "");
res.type = ptr_type;
GB_ASSERT(p->curr_block->preds.count >= 2);
incoming_blocks[0] = p->curr_block->preds[0]->block;
incoming_blocks[1] = p->curr_block->preds[1]->block;
LLVMAddIncoming(res.value, incoming_values, incoming_blocks, 2);
return lb_addr(res);
case_end;
}
TokenPos token_pos = ast_token(expr).pos;