[clang] [compiler-rt] [llvm] [SPARC] Properly handle CC for long double on sparc32 (PR #162226)

[Sergei Barannikov via llvm-commits]

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@@ -17,23 +17,25 @@
 def CC_Sparc32 : CallingConv<[
   // Custom assign SRet to [sp+64].
   CCIfSRet<CCCustom<"CC_Sparc_Assign_SRet">>,
+  // f128 arguments are passed indirectly, using i32 pointers.
+  CCIfType<[f128], CCPassIndirect<i32>>,
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s-barannikov wrote:

I suppose this will not work in soft-float mode. In this mode, f128 type is illegal and will be split into multiple legal (presumably i32) types, which means `CCIfType<[f128], ...>` will never match.
Can you confirm that it indeed doesn't work and add a FIXME if so? Assuming this doesn't have to be fixed in this patch.

https://github.com/llvm/llvm-project/pull/162226