Add lowering for updated _scaled_mm

[yangsiyu007]

[Draft]

cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @peterbell10 @ipiszy @yf225 @chenyang78 @kadeng @muchulee8 @ColinPeppler @amjames @desertfire @chauhang

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❌ 15 New Failures, 22 Unrelated Failures

As of commit 618878a with merge base f2f4dde ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner-clang / linux-job (gh)
  curl: (22) The requested URL returned error:
• Lint / lintrunner-noclang / linux-job (gh)
  curl: (22) The requested URL returned error:
• pull / linux-focal-cpu-py3.10-gcc9-bazel-test / build-and-test (default, 1, 1, linux.4xlarge) (gh)
• pull / linux-focal-cuda12.1-py3.10-gcc9-bazel-test / build-and-test (default, 1, 1, linux.4xlarge.nvidia.gpu) (gh)
• pull / linux-focal-py3_8-clang9-xla / build (gh)
• pull / linux-focal-py3.12-clang10 / build (gh)
• pull / linux-focal-py3.12-clang10-experimental-split-build / build (gh)
• pull / linux-jammy-cuda11.8-cudnn9-py3.8-clang12 / build (gh)
• pull / linux-jammy-py3-clang12-executorch / build (gh)
• pull / linux-jammy-py3.10-clang15-asan / build (gh)
• pull / linux-jammy-py3.8-gcc11 / build (gh)
• pull / linux-jammy-py3.8-gcc11-mobile-lightweight-dispatch-build / build (gh)
• pull / linux-jammy-py3.8-gcc11-no-ops / build (gh)
• pull / linux-jammy-py3.8-gcc11-pch / build (gh)
• pull / win-vs2019-cpu-py3 / build (gh)
  Process completed with exit code 127.

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• inductor / cuda12.1-py3.10-gcc9-sm86 / build (gh) (similar failure)
  The process '/usr/bin/git' failed with exit code 128
• inductor / cuda12.1-py3.12-gcc9-sm86 / build (gh) (similar failure)
  The process '/usr/bin/git' failed with exit code 128
• inductor / cuda12.4-py3.10-gcc9-sm86 / build (gh) (similar failure)
  The process '/usr/bin/git' failed with exit code 128
• inductor / linux-jammy-cpu-py3.12-gcc11-inductor-halide / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• inductor / linux-jammy-cpu-py3.8-gcc11-inductor / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• inductor / rocm6.1-py3.8-inductor / build (gh) (similar failure)
  The process '/usr/bin/git' failed with exit code 128
• inductor-periodic / cuda12.1-py3.10-gcc9-sm80 / build (gh) (similar failure)
  The process '/usr/bin/git' failed with exit code 128
• inductor-periodic / cuda12.1-py3.10-gcc9-sm86-periodic-dynamo-benchmarks / build (gh) (similar failure)
  The process '/usr/bin/git' failed with exit code 128
• Lint / workflow-checks / linux-job (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-cuda11.8-py3.10-gcc9 / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-cuda12.1-py3.10-gcc9 / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-cuda12.1-py3.10-gcc9-experimental-split-build / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-cuda12.1-py3.10-gcc9-sm86 / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-cuda12.4-py3.10-gcc9-bazel-test / build-and-test (default, 1, 1, linux.4xlarge.nvidia.gpu) (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single / build-and-test (default, 1, 1, linux.2xlarge) (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single-full-jit / build-and-test (default, 1, 1, linux.2xlarge) (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-py3-clang9-mobile-custom-build-static / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-py3.11-clang10 / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-py3.8-clang10 / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-py3.8-clang10-onnx / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-focal-rocm6.1-py3.8 / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128
• pull / linux-jammy-py3-clang12-mobile-build / build (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 128

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[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: yangsiyu007 / name: Siyu Yang (922a98b, 78b0e2f, 618878a, 6ce607c)