[libc-commits] [libc] [libc][i386] FPBit support for 96b long double (PR #115084)

via libc-commits libc-commits at lists.llvm.org
Wed Nov 6 11:02:14 PST 2024


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@@ -127,7 +127,18 @@ template <> struct FPLayout<FPType::IEEE754_Binary128> {
 };
 
 template <> struct FPLayout<FPType::X86_Binary80> {
+// x86_64
+#if __SIZEOF_LONG_DOUBLE__ == 16
   using StorageType = UInt128;
+// i386-linux-gnu
+#elif __SIZEOF_LONG_DOUBLE__ == 12
+  using StorageType = UInt<__SIZEOF_LONG_DOUBLE__ * CHAR_BIT>;
+#else
+# TODO: https://github.com/llvm/llvm-project/issues/115184
+# Android i386 uses `long double == double` i.e. `sizeof(long double) == 8`
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lntue wrote:

I think you should add extra android i386 condition to https://github.com/llvm/llvm-project/blob/main/libc/src/__support/macros/properties/types.h#L24

https://github.com/llvm/llvm-project/pull/115084


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