[clang] [llvm] [DirectX] Implement UseNativeLowPrecision shader flag analysis (PR #134288)

[Finn Plummer via llvm-commits]

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@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -fnative-half-type -finclude-default-header -triple dxil-pc-shadermodel6.3-library -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s --check-prefix=FLAG
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inbelic wrote:

nit: it feels like we could remove some of the flags provided here

https://github.com/llvm/llvm-project/pull/134288