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Add `f16` and `f128` inline ASM support for `x86` and `x86-64` This PR adds `f16` and `f128` input and output support to inline ASM on `x86` and `x86-64`. `f16` vector sizes are taken from [here](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html). Relevant issue: #125398 Tracking issue: #116909 ``@rustbot`` label +F-f16_and_f128
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.