SPARCv9 implements long double as an IEEE quad.

llvm-svn: 199399

clang/lib/Basic/Targets.cpp

@@ -4532,6 +4532,12 @@ public:
       UIntMaxType = UnsignedLong;
     }
     Int64Type = IntMaxType;
+
+    // The SPARCv8 System V ABI has long double 128-bits in size, but 64-bit
+    // aligned. The SPARCv9 SCD 2.4.1 says 16-byte aligned.
+    LongDoubleWidth = 128;
+    LongDoubleAlign = 128;
+    LongDoubleFormat = &llvm::APFloat::IEEEquad;
   }
 
   virtual void getTargetDefines(const LangOptions &Opts,

clang/test/CodeGen/sparcv9-abi.c

@@ -18,6 +18,9 @@ long long f_int_3(long long x) { return x; }
 // CHECK-LABEL: define signext i8 @f_int_4(i8 signext %x)
 char f_int_4(char x) { return x; }
 
+// CHECK-LABEL: define fp128 @f_ld(fp128 %x)
+long double f_ld(long double x) { return x; }
+
 // Small structs are passed in registers.
 struct small {
   int *a, *b;