Improvements to propagate_const for int4

[pfultz2]

No description provided.

[migraphx-bot]

Test	Batch	Rate new 23bd0d	Rate old 9fb2f4	Diff	Compare
torchvision-resnet50	64	3,255.85	3,258.31	-0.08%	✅
torchvision-resnet50_fp16	64	6,969.83	6,980.08	-0.15%	✅
torchvision-densenet121	32	2,431.87	2,430.13	0.07%	✅
torchvision-densenet121_fp16	32	4,084.00	4,100.79	-0.41%	✅
torchvision-inceptionv3	32	1,635.64	1,635.80	-0.01%	✅
torchvision-inceptionv3_fp16	32	2,754.30	2,756.32	-0.07%	✅
cadene-inceptionv4	16	778.80	780.08	-0.16%	✅
cadene-resnext64x4	16	807.04	807.36	-0.04%	✅
slim-mobilenet	64	7,464.04	7,463.42	0.01%	✅
slim-nasnetalarge	64	208.08	208.23	-0.07%	✅
slim-resnet50v2	64	3,438.00	3,435.41	0.08%	✅
bert-mrpc-onnx	8	1,146.54	1,146.86	-0.03%	✅
bert-mrpc-tf	1	314.31	314.12	0.06%	✅
pytorch-examples-wlang-gru	1	394.33	422.52	-6.67%	🔴
pytorch-examples-wlang-lstm	1	380.20	390.72	-2.69%	✅
torchvision-resnet50_1	1	808.71	811.85	-0.39%	✅
cadene-dpn92_1	1	398.15	435.19	-8.51%	🔴
cadene-resnext101_1	1	380.70	380.85	-0.04%	✅
onnx-taau-downsample	1	366.31	366.80	-0.14%	✅
dlrm-criteoterabyte	1	35.07	35.02	0.12%	✅
dlrm-criteoterabyte_fp16	1	58.13	58.22	-0.15%	✅
agentmodel	1	8,286.17	7,495.47	10.55%	🔆
unet_fp16	2	58.99	58.91	0.13%	✅
resnet50v1_fp16	1	935.63	943.39	-0.82%	✅
resnet50v1_int8	1	966.59	969.89	-0.34%	✅
bert_base_cased_fp16	64	1,170.82	1,171.87	-0.09%	✅
bert_large_uncased_fp16	32	363.13	363.41	-0.08%	✅
bert_large_fp16	1	211.08	213.38	-1.08%	✅
distilgpt2_fp16	16	2,201.22	2,202.98	-0.08%	✅
yolov5s	1	545.14	541.76	0.62%	✅
tinyllama	1	43.44	43.64	-0.46%	✅
vicuna-fastchat	1	171.70	172.03	-0.19%	✅
whisper-tiny-encoder	1	420.21	417.60	0.62%	✅
whisper-tiny-decoder	1	436.36	423.58	3.02%	🔆

This build is not recommended to merge 🔴

[migraphx-bot]

     ✅ bert-mrpc-onnx: PASSED: MIGraphX meets tolerance

     ✅ bert-mrpc-tf: PASSED: MIGraphX meets tolerance

     ✅ pytorch-examples-wlang-gru: PASSED: MIGraphX meets tolerance

     ✅ pytorch-examples-wlang-lstm: PASSED: MIGraphX meets tolerance

     ✅ torchvision-resnet50_1: PASSED: MIGraphX meets tolerance

     ✅ cadene-dpn92_1: PASSED: MIGraphX meets tolerance

     ✅ cadene-resnext101_1: PASSED: MIGraphX meets tolerance

     ✅ dlrm-criteoterabyte: PASSED: MIGraphX meets tolerance

     ✅ agentmodel: PASSED: MIGraphX meets tolerance

     ✅ unet: PASSED: MIGraphX meets tolerance

     ✅ resnet50v1: PASSED: MIGraphX meets tolerance

     ✅ bert_base_cased_fp16: PASSED: MIGraphX meets tolerance

🔴bert_large_uncased_fp16: FAILED: MIGraphX is not within tolerance - check verbose output

     ✅ bert_large: PASSED: MIGraphX meets tolerance

     ✅ yolov5s: PASSED: MIGraphX meets tolerance

     ✅ tinyllama: PASSED: MIGraphX meets tolerance

     ✅ vicuna-fastchat: PASSED: MIGraphX meets tolerance

     ✅ whisper-tiny-encoder: PASSED: MIGraphX meets tolerance

     ✅ whisper-tiny-decoder: PASSED: MIGraphX meets tolerance

     ✅ distilgpt2_fp16: PASSED: MIGraphX meets tolerance