diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index ab871a25d073f5c2554dbae159038c2580ba74d3..11cc699ffe1eb741b8e818b7f8a8a4653ecf450b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -10898,7 +10898,7 @@ SDValue DAGCombiner::visitFADD(SDNode *N) {
   auto isFMulNegTwo = [](SDValue FMul) {
     if (!FMul.hasOneUse() || FMul.getOpcode() != ISD::FMUL)
       return false;
-    auto *C = isConstOrConstSplatFP(FMul.getOperand(1));
+    auto *C = isConstOrConstSplatFP(FMul.getOperand(1), true);
     return C && C->isExactlyValue(-2.0);
   };
 
diff --git a/llvm/test/CodeGen/AArch64/fadd-combines.ll b/llvm/test/CodeGen/AArch64/fadd-combines.ll
index c2e4430029ad387f4668faf9980a5f39c15626c3..7332101a481e610c037cf34bc77cfd237cd4900d 100644
--- a/llvm/test/CodeGen/AArch64/fadd-combines.ll
+++ b/llvm/test/CodeGen/AArch64/fadd-combines.ll
@@ -76,9 +76,8 @@ define <4 x float> @fmulnegtwo_vec_commute(<4 x float> %a, <4 x float> %b) {
 define <4 x float> @fmulnegtwo_vec_undefs(<4 x float> %a, <4 x float> %b) {
 ; CHECK-LABEL: fmulnegtwo_vec_undefs:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    movi v2.4s, #192, lsl #24
-; CHECK-NEXT:    fmul v1.4s, v1.4s, v2.4s
-; CHECK-NEXT:    fadd v0.4s, v0.4s, v1.4s
+; CHECK-NEXT:    fadd v1.4s, v1.4s, v1.4s
+; CHECK-NEXT:    fsub v0.4s, v0.4s, v1.4s
 ; CHECK-NEXT:    ret
   %mul = fmul <4 x float> %b, <float undef, float -2.0, float undef, float -2.0>
   %add = fadd <4 x float> %a, %mul
@@ -88,9 +87,8 @@ define <4 x float> @fmulnegtwo_vec_undefs(<4 x float> %a, <4 x float> %b) {
 define <4 x float> @fmulnegtwo_vec_commute_undefs(<4 x float> %a, <4 x float> %b) {
 ; CHECK-LABEL: fmulnegtwo_vec_commute_undefs:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    movi v2.4s, #192, lsl #24
-; CHECK-NEXT:    fmul v1.4s, v1.4s, v2.4s
-; CHECK-NEXT:    fadd v0.4s, v1.4s, v0.4s
+; CHECK-NEXT:    fadd v1.4s, v1.4s, v1.4s
+; CHECK-NEXT:    fsub v0.4s, v0.4s, v1.4s
 ; CHECK-NEXT:    ret
   %mul = fmul <4 x float> %b, <float -2.0, float undef, float -2.0, float -2.0>
   %add = fadd <4 x float> %mul, %a