[libc-commits] [libc] [libc][stdfix] Implement fixed point `countlsfx` functions in llvm-libc (PR #125356)

[via libc-commits]

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@@ -64,6 +65,8 @@ foreach(feature IN LISTS ALL_COMPILER_FEATURES)
   set(link_options "")
   if(${feature} STREQUAL "fixed_point")
     list(APPEND compile_options "-ffixed-point")
+  elseif(${feature} STREQUAL "padding_on_unsigned_fixed_point")
+    list(APPEND compile_options "-ffixed-point -Xclang=-fpadding-on-unsigned-fixed-point")
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lntue wrote:

This part is to test whether compiler accepting these flags, and both are recently added to clang.  @PiJoules might know more about them.

My only concern is that maybe we should only test `-Xclang=-fpadding-on-unsigned-fixed-point` flag if `-ffixed-point` is supported.

https://github.com/llvm/llvm-project/pull/125356