Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -495,6 +495,8 @@
                                 unsigned ConstrainedIntrinsicID) {
   llvm::Value *Src0 = CGF.EmitScalarExpr(E->getArg(0));
 
+  CodeGenFunction::CGFPOptionsRAII FPOptsRAII(
+      CGF, E->getFPFeaturesInEffect(CGF.getLangOpts()));
   if (CGF.Builder.getIsFPConstrained()) {
     CodeGenFunction::CGFPOptionsRAII FPOptsRAII(CGF, E);
     Function *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
Index: clang/test/CodeGen/fp-contract-fast-pragma.cpp
===================================================================
--- clang/test/CodeGen/fp-contract-fast-pragma.cpp
+++ clang/test/CodeGen/fp-contract-fast-pragma.cpp
@@ -5,8 +5,10 @@
 // CHECK: _Z13fp_contract_1fff
 // CHECK: %[[M:.+]] = fmul contract float %a, %b
 // CHECK-NEXT: fadd contract float %[[M]], %c
+// CHECK-NEXT: tail call contract float @llvm.sqrt.f32(float %a)
+
 #pragma clang fp contract(fast)
-  return a * b + c;
+  return a * b + c + __builtin_sqrtf(a);
 }
 
 // Is FP_CONTRACT state cleared on exiting compound statements?