diff --git a/clang/include/clang/Basic/Builtins.def b/clang/include/clang/Basic/Builtins.def
index 42d8fa7724a8..3f1c27616a99 100644
--- a/clang/include/clang/Basic/Builtins.def
+++ b/clang/include/clang/Basic/Builtins.def
@@ -833,6 +833,14 @@ LIBBUILTIN(ceil, "dd", "fc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(ceill, "LdLd", "fc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(ceilf, "ff", "fc", "math.h", ALL_LANGUAGES)
 
+LIBBUILTIN(cimag, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cimagf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cimagl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(creal, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(crealf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(creall, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
 LIBBUILTIN(copysign, "ddd", "fc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(copysignl, "LdLdLd", "fc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(copysignf, "fff", "fc", "math.h", ALL_LANGUAGES)
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index a1a6ef6bfade..d2824e91e7b0 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -244,14 +244,20 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
   }
   case Builtin::BI__builtin_creal:
   case Builtin::BI__builtin_crealf:
-  case Builtin::BI__builtin_creall: {
+  case Builtin::BI__builtin_creall:
+  case Builtin::BIcreal:
+  case Builtin::BIcrealf:
+  case Builtin::BIcreall: {
     ComplexPairTy ComplexVal = EmitComplexExpr(E->getArg(0));
     return RValue::get(ComplexVal.first);
   }
 
   case Builtin::BI__builtin_cimag:
   case Builtin::BI__builtin_cimagf:
-  case Builtin::BI__builtin_cimagl: {
+  case Builtin::BI__builtin_cimagl:
+  case Builtin::BIcimag:
+  case Builtin::BIcimagf:
+  case Builtin::BIcimagl: {
     ComplexPairTy ComplexVal = EmitComplexExpr(E->getArg(0));
     return RValue::get(ComplexVal.second);
   }
diff --git a/clang/test/CodeGen/libcalls-complex.c b/clang/test/CodeGen/libcalls-complex.c
new file mode 100644
index 000000000000..7bcfa605ae8b
--- /dev/null
+++ b/clang/test/CodeGen/libcalls-complex.c
@@ -0,0 +1,46 @@
+// RUN: %clang_cc1 -fno-builtin -emit-llvm -o - %s -triple i386-unknown-unknown | FileCheck -check-prefix YES %s
+// RUN: %clang_cc1 -emit-llvm -o - %s -triple i386-unknown-unknown | FileCheck -check-prefix NO %s
+
+extern float crealf(float _Complex);
+extern double creal(double _Complex);
+extern long double creall(long double _Complex);
+
+extern float cimagf(float _Complex);
+extern double cimag(double _Complex);
+extern long double cimagl(long double _Complex);
+
+double test_creal(double _Complex z) {
+  return creal(z);
+  // CHECK-NO-NOT: call double @creal
+  // CHECK-YES: call double @creal
+}
+
+long double test_creall(double _Complex z) {
+  return creall(z);
+  // CHECK-NO-NOT: call x86_fp80 @creall
+  // CHECK-YES: call x86_fp80 @creall
+}
+
+float test_crealf(double _Complex z) {
+  return crealf(z);
+  // CHECK-NO-NOT: call float @crealf
+  // CHECK-YES: call float @crealf
+}
+
+double test_cimag(double _Complex z) {
+  return cimag(z);
+  // CHECK-NO-NOT: call double @cimag
+  // CHECK-YES: call double @cimag
+}
+
+long double test_cimagl(double _Complex z) {
+  return cimagl(z);
+  // CHECK-NO-NOT: call x86_fp80 @cimagl
+  // CHECK-YES: call x86_fp80 @cimagl
+}
+
+float test_cimagf(double _Complex z) {
+  return cimagf(z);
+  // CHECK-NO-NOT: call float @cimagf
+  // CHECK-YES: call float @cimagf
+}