fix mint.cumsum dynamic shape error 2.7.2 · Pull Request !90954 · MindSpore/mindspore

1. fix mint.cumsum dynamic shape error
---
<!--  Thanks for sending a pull request!  Here are some tips for you:

1) If this is your first time, please read our contributor guidelines: https://gitee.com/mindspore/mindspore/blob/master/CONTRIBUTING.md

2) If you want to contribute your code but don't know who will review and merge, please add label `mindspore-assistant` to the pull request, we will find and do it as soon as possible.
-->

**What type of PR is this?**

/kind bug

---

**What does this PR do / why do we need it**:
修复动态rank下，mint.cumsum 求导报错。
动态rank的情况下，输入x的shape为[-2,]，无法通过其shape去判断指定维度的大小是否为1。

---

**Which issue(s) this PR fixes**:

Fixes #ID8DMK

---

**Test Plan and Test result：What scenarios were tested, and what were the verification results（Function, performance, reliability, etc.）**：
添加冒烟用例test_cumsum_grad_dynamic_rank，测试mint.cumsum算子在动态rank的情况下，是否执行正确。

---

**Self-checklist**:（**请自检，在[ ]内打上x，我们将检视你的完成情况，否则会导致pr无法合入**）

+ - [x] **设计**：PR对应的方案是否已经经过Maintainer评审，方案检视意见是否均已答复并完成方案修改
+ - [x] **测试**：PR中的代码是否已有UT/ST测试用例进行充分的覆盖，新增测试用例是否随本PR一并上库或已经上库
+ - [x] **验证**：PR描述信息中是否已包含对该PR对应的Feature、Refactor、Bugfix的预期目标达成情况的详细验证结果描述
+ - [ ] **接口**：是否涉及对外接口变更，相应变更已得到接口评审组织的通过，API对应的注释信息已经刷新正确
+ - [ ] **文档**：是否涉及官网文档修改，如果涉及请及时提交资料到Doc仓

GVP MindSpore/mindspore
Closed

发现个问题

GVPMindSpore/mindsporeClosed

Search

GVP MindSpore/mindspore
Closed