[libclc] [libclc] Refine __clc_fp*_subnormals_supported and __clc_flush_denormal_if_not_supported (PR #157633)

[Matt Arsenault via cfe-commits]

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@@ -8,8 +8,8 @@
 
 _CLC_DEF _CLC_OVERLOAD float __clc_remquo(float x, float y,
                                           __CLC_ADDRESS_SPACE int *quo) {
-  x = __clc_flush_denormal_if_not_supported(x);
-  y = __clc_flush_denormal_if_not_supported(y);
+  x = __clc_soft_flush_denormal(x);
+  y = __clc_soft_flush_denormal(y);
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arsenm wrote:

https://github.com/ROCm/llvm-project/blob/0e9e3946cb257d1ed7b119333db451805865b36b/amd/device-libs/ocml/src/remainderF_base.h#L47


See this series of patches:
https://github.com/ROCm/llvm-project/commit/b3beb9396041791c2ef22a5e8c3548a9f8686a5e
https://github.com/ROCm/llvm-project/commit/9a7bc191b9d6430985bce4dce55c3acef5c9fd3a
https://github.com/ROCm/llvm-project/commit/e9198f7d4619eb222f66c1f1d496eee3acdd8511

Should just copy what these did 



https://github.com/llvm/llvm-project/pull/157633