[libc-commits] [PATCH] D122688: [libc][obvious] fix sqrt when long double is double

[Michael Jones via Phabricator via libc-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG4ac3f7e41aae: [libc][obvious] fix sqrt when long double is double (authored by michaelrj).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D122688/new/

https://reviews.llvm.org/D122688

Files:
  libc/src/__support/FPUtil/x86_64/sqrt.h


Index: libc/src/__support/FPUtil/x86_64/sqrt.h
===================================================================
--- libc/src/__support/FPUtil/x86_64/sqrt.h
+++ libc/src/__support/FPUtil/x86_64/sqrt.h
@@ -32,10 +32,18 @@
   return result;
 }
 
+#ifdef LONG_DOUBLE_IS_DOUBLE
+template <> inline long double sqrt<long double>(long double x) {
+  long double result;
+  __asm__ __volatile__("sqrtsd %x1, %x0" : "=x"(result) : "x"(x));
+  return result;
+}
+#else
 template <> inline long double sqrt<long double>(long double x) {
   __asm__ __volatile__("fsqrt" : "+t"(x));
   return x;
 }
+#endif
 
 } // namespace fputil
 } // namespace __llvm_libc


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