[clDNN] clDNN doesn't fully support broadcasting

[Christywl]

Test Env: Chromium Version: nightly build 70.0.3503.0 (16d3dad) Platform: Windows/Linux

Expected Result: Broadcasting works well on clDNN backend.

Actual Result: Broadcasting partially works on clDNN backend.

• Error 1: The outputs don't match the expected values
• Error 2.

[9458:9571:0330/111642.718896:ERROR:execution_impl_cl_dnn.cc(24)] [clDNN] failed to allocate network -1 /home/nhu/code/clDNN/src/eltwise.cpp at line: 212
Error has occured for: 3
Broadcast sizes sizes: [b:1, f:2, x:2, y:3, z:1]
input1 sizes sizes: [b:1, f:1, x:1, y:2, z:1]
All Broadcast sizes dimensions must be dividable by corresponding dimensions from input1 sizes
Mismatching dimensions: Spatial y
Input tensors are not broadcastable to the same shape

How to Reproduce:

1. Launch chromium and enable WebML flag

2. Visit

   • https://brucedai.github.io/webnnt/test/issue_add_broadcasting_1.html?prefer=sustained (Error 1)
   • https://brucedai.github.io/webnnt/test/issue_mul_broadcasting_1.html?prefer=sustained (Error 1)
   • https://brucedai.github.io/webnnt/test/issue_add_broadcasting_2.html?prefer=sustained (Error 2)
   • https://brucedai.github.io/webnnt/test/issue_mul_broadcasting_2.html?prefer=sustained (Error 2)

[huningxin]

@Christywl , please help identify the test cases for ADD/MUL broadcasting?

[Christywl]

@huningxin , the urls for the failed tests:

• https://brucedai.github.io/nt/test/issue_add_broadcasting.html?backend=cldnn
• https://brucedai.github.io/nt/test/issue_mul_broadcasting.html?backend=cldnn