[clang] Remove FiniteMathOnly and use only NoHonorINFs and NoHonorNANs. (PR #97342)

[Anastasia Stulova via cfe-commits]

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@@ -816,6 +816,11 @@ class FPOptions {
     setAllowFPReassociate(LO.AllowFPReassoc);
     setNoHonorNaNs(LO.NoHonorNaNs);
     setNoHonorInfs(LO.NoHonorInfs);
+    // Ensure that if FiniteMathOnly is enabled, NoHonorNaNs and NoHonorInfs are
+    // also enabled. This is because FiniteMathOnly mode assumes no NaNs or Infs
+    // are present in computations.
+    assert((LO.FiniteMathOnly == (LO.NoHonorInfs && LO.NoHonorNaNs)) &&
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AnastasiaStulova wrote:

Btw this option is defined in OpenCL spec so it would be better to keep this at least as a driver option.
https://registry.khronos.org/OpenCL/specs/3.0-unified/html/OpenCL_API.html#optimization-options

I think mapping it to ``NoHonorInfs``, ``NoHonorNaNs`` frontend options seems reasonable.

Can the description of this change be elaborated to describe what the intension is.

Tagging @svenvh for any additional feedback.

 But mapping 

https://github.com/llvm/llvm-project/pull/97342