Index: llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
===================================================================
--- llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
+++ llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
@@ -406,6 +406,30 @@
           case Intrinsic::loop_decrement:
             return true;
 
+          // Binary operations on 128-bit value will use CTR.
+          case Intrinsic::experimental_constrained_fadd:
+          case Intrinsic::experimental_constrained_fsub:
+          case Intrinsic::experimental_constrained_fmul:
+          case Intrinsic::experimental_constrained_fdiv:
+          case Intrinsic::experimental_constrained_frem:
+            if (F->getType()->getScalarType()->isFP128Ty() ||
+                F->getType()->getScalarType()->isPPC_FP128Ty())
+              return true;
+            break;
+
+          case Intrinsic::experimental_constrained_fptosi:
+          case Intrinsic::experimental_constrained_fptoui:
+          case Intrinsic::experimental_constrained_sitofp:
+          case Intrinsic::experimental_constrained_uitofp: {
+            Type *SrcType = CI->getArgOperand(0)->getType()->getScalarType();
+            Type *DstType = CI->getType()->getScalarType();
+            if (SrcType->isPPC_FP128Ty() || DstType->isPPC_FP128Ty() ||
+                isLargeIntegerTy(!TM.isPPC64(), SrcType) ||
+                isLargeIntegerTy(!TM.isPPC64(), DstType))
+              return true;
+            break;
+          }
+
           // Exclude eh_sjlj_setjmp; we don't need to exclude eh_sjlj_longjmp
           // because, although it does clobber the counter register, the
           // control can't then return to inside the loop unless there is also
@@ -424,6 +448,15 @@
           case Intrinsic::pow:
           case Intrinsic::sin:
           case Intrinsic::cos:
+          case Intrinsic::experimental_constrained_powi:
+          case Intrinsic::experimental_constrained_log:
+          case Intrinsic::experimental_constrained_log2:
+          case Intrinsic::experimental_constrained_log10:
+          case Intrinsic::experimental_constrained_exp:
+          case Intrinsic::experimental_constrained_exp2:
+          case Intrinsic::experimental_constrained_pow:
+          case Intrinsic::experimental_constrained_sin:
+          case Intrinsic::experimental_constrained_cos:
             return true;
           case Intrinsic::copysign:
             if (CI->getArgOperand(0)->getType()->getScalarType()->
@@ -445,6 +478,54 @@
           case Intrinsic::llround:            Opcode = ISD::LLROUND;    break;
           case Intrinsic::minnum:             Opcode = ISD::FMINNUM;    break;
           case Intrinsic::maxnum:             Opcode = ISD::FMAXNUM;    break;
+          case Intrinsic::experimental_constrained_fcmp:
+            Opcode = ISD::STRICT_FSETCC;
+            break;
+          case Intrinsic::experimental_constrained_fcmps:
+            Opcode = ISD::STRICT_FSETCCS;
+            break;
+          case Intrinsic::experimental_constrained_fma:
+            Opcode = ISD::STRICT_FMA;
+            break;
+          case Intrinsic::experimental_constrained_sqrt:
+            Opcode = ISD::STRICT_FSQRT;
+            break;
+          case Intrinsic::experimental_constrained_floor:
+            Opcode = ISD::STRICT_FFLOOR;
+            break;
+          case Intrinsic::experimental_constrained_ceil:
+            Opcode = ISD::STRICT_FCEIL;
+            break;
+          case Intrinsic::experimental_constrained_trunc:
+            Opcode = ISD::STRICT_FTRUNC;
+            break;
+          case Intrinsic::experimental_constrained_rint:
+            Opcode = ISD::STRICT_FRINT;
+            break;
+          case Intrinsic::experimental_constrained_lrint:
+            Opcode = ISD::STRICT_LRINT;
+            break;
+          case Intrinsic::experimental_constrained_llrint:
+            Opcode = ISD::STRICT_LLRINT;
+            break;
+          case Intrinsic::experimental_constrained_nearbyint:
+            Opcode = ISD::STRICT_FNEARBYINT;
+            break;
+          case Intrinsic::experimental_constrained_round:
+            Opcode = ISD::STRICT_FROUND;
+            break;
+          case Intrinsic::experimental_constrained_lround:
+            Opcode = ISD::STRICT_LROUND;
+            break;
+          case Intrinsic::experimental_constrained_llround:
+            Opcode = ISD::STRICT_LLROUND;
+            break;
+          case Intrinsic::experimental_constrained_minnum:
+            Opcode = ISD::STRICT_FMINNUM;
+            break;
+          case Intrinsic::experimental_constrained_maxnum:
+            Opcode = ISD::STRICT_FMAXNUM;
+            break;
           case Intrinsic::umul_with_overflow: Opcode = ISD::UMULO;      break;
           case Intrinsic::smul_with_overflow: Opcode = ISD::SMULO;      break;
           }
Index: llvm/test/CodeGen/PowerPC/ctrloop-constrained-fp.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/PowerPC/ctrloop-constrained-fp.ll
@@ -0,0 +1,42 @@
+; RUN: llc -mtriple powerpc64le < %s
+
+; Check constrained ops converted to call
+define void @test(double* %cast) {
+root:
+  br label %for.body
+
+exit:
+  ret void
+
+for.body:
+  %i = phi i64 [ 0, %root ], [ %next, %for.body ]
+  %idx = getelementptr inbounds double, double* %cast, i64 %i
+  %val = load double, double* %idx
+  %cos = tail call nnan ninf nsz arcp double @llvm.experimental.constrained.cos.f64(double %val, metadata !"round.dynamic", metadata !"fpexcept.strict")
+  store double %cos, double* %idx, align 8
+  %next = add nuw nsw i64 %i, 1
+  %cond = icmp eq i64 %next, 255
+  br i1 %cond, label %exit, label %for.body
+}
+
+; Check constrained ops converted to native instruction
+define void @test2(double* %cast) {
+entry:
+  br label %for.body
+
+for.body:
+  %i = phi i64 [ 0, %entry ], [ %next, %for.body ]
+  %idx = getelementptr inbounds double, double* %cast, i64 %i
+  %val = load double, double* %idx
+  %cos = tail call nnan ninf nsz arcp double @llvm.experimental.constrained.sqrt.f64(double %val, metadata !"round.dynamic", metadata !"fpexcept.strict")
+  store double %cos, double* %idx, align 8
+  %next = add nuw nsw i64 %i, 1
+  %cond = icmp eq i64 %next, 255
+  br i1 %cond, label %exit, label %for.body
+
+exit:
+  ret void
+}
+
+declare double @llvm.experimental.constrained.cos.f64(double, metadata, metadata)
+declare double @llvm.experimental.constrained.sqrt.f64(double, metadata, metadata)