diff --git a/clang/include/clang/Tooling/Syntax/Nodes.h b/clang/include/clang/Tooling/Syntax/Nodes.h
--- a/clang/include/clang/Tooling/Syntax/Nodes.h
+++ b/clang/include/clang/Tooling/Syntax/Nodes.h
@@ -45,6 +45,7 @@
   BinaryOperatorExpression,
   CxxNullPtrExpression,
   IntegerLiteralExpression,
+  FloatingLiteralExpression,
   IdExpression,
 
   // Statements.
@@ -254,6 +255,17 @@
   syntax::Leaf *nullPtrKeyword();
 };
 
+/// Expression for floating-point literals. C++ [lex.fcon]
+class FloatingLiteralExpression final : public Expression {
+public:
+  FloatingLiteralExpression()
+      : Expression(NodeKind::FloatingLiteralExpression) {}
+  static bool classof(const Node *N) {
+    return N->kind() == NodeKind::FloatingLiteralExpression;
+  }
+  syntax::Leaf *literalToken();
+};
+
 /// Expression for integer literals.
 class IntegerLiteralExpression final : public Expression {
 public:
diff --git a/clang/lib/Tooling/Syntax/BuildTree.cpp b/clang/lib/Tooling/Syntax/BuildTree.cpp
--- a/clang/lib/Tooling/Syntax/BuildTree.cpp
+++ b/clang/lib/Tooling/Syntax/BuildTree.cpp
@@ -654,6 +654,13 @@
     return true;
   }
 
+  bool WalkUpFromFloatingLiteral(FloatingLiteral *S) {
+    Builder.markChildToken(S->getLocation(), syntax::NodeRole::LiteralToken);
+    Builder.foldNode(Builder.getExprRange(S),
+                     new (allocator()) syntax::FloatingLiteralExpression, S);
+    return true;
+  }
+
   bool WalkUpFromCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
     Builder.markChildToken(S->getLocation(), syntax::NodeRole::LiteralToken);
     Builder.foldNode(Builder.getExprRange(S),
diff --git a/clang/lib/Tooling/Syntax/Nodes.cpp b/clang/lib/Tooling/Syntax/Nodes.cpp
--- a/clang/lib/Tooling/Syntax/Nodes.cpp
+++ b/clang/lib/Tooling/Syntax/Nodes.cpp
@@ -22,6 +22,8 @@
     return OS << "CxxNullPtrExpression";
   case NodeKind::IntegerLiteralExpression:
     return OS << "IntegerLiteralExpression";
+  case NodeKind::FloatingLiteralExpression:
+    return OS << "FloatingLiteralExpression";
   case NodeKind::PrefixUnaryOperatorExpression:
     return OS << "PrefixUnaryOperatorExpression";
   case NodeKind::PostfixUnaryOperatorExpression:
@@ -195,6 +197,11 @@
       findChild(syntax::NodeRole::IdExpression_id));
 }
 
+syntax::Leaf *syntax::FloatingLiteralExpression::literalToken() {
+  return llvm::cast_or_null<syntax::Leaf>(
+      findChild(syntax::NodeRole::LiteralToken));
+}
+
 syntax::Leaf *syntax::IntegerLiteralExpression::literalToken() {
   return llvm::cast_or_null<syntax::Leaf>(
       findChild(syntax::NodeRole::LiteralToken));
diff --git a/clang/unittests/Tooling/Syntax/TreeTest.cpp b/clang/unittests/Tooling/Syntax/TreeTest.cpp
--- a/clang/unittests/Tooling/Syntax/TreeTest.cpp
+++ b/clang/unittests/Tooling/Syntax/TreeTest.cpp
@@ -69,6 +69,10 @@
            Language == Lang_CXX20;
   }
 
+  bool isCXX17OrLater() const {
+    return Language == Lang_CXX17 || Language == Lang_CXX20;
+  }
+
   bool supportsCXXDynamicExceptionSpecification() const {
     return Language == Lang_CXX03 || Language == Lang_CXX11 ||
            Language == Lang_CXX14;
@@ -1228,6 +1232,91 @@
 )txt"));
 }
 
+TEST_P(SyntaxTreeTest, FloatingLiteral) {
+  EXPECT_TRUE(treeDumpEqual(
+      R"cpp(
+void test() {
+  1e-2;
+  2.;
+  .2;
+  2.f;
+}
+)cpp",
+      R"txt(
+*: TranslationUnit
+`-SimpleDeclaration
+  |-void
+  |-SimpleDeclarator
+  | |-test
+  | `-ParametersAndQualifiers
+  |   |-(
+  |   `-)
+  `-CompoundStatement
+    |-{
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-1e-2
+    | `-;
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-2.
+    | `-;
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-.2
+    | `-;
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-2.f
+    | `-;
+    `-}
+)txt"));
+}
+
+TEST_P(SyntaxTreeTest, FloatingLiteralHexadecimal) {
+  if (!GetParam().isCXX17OrLater()) {
+    return;
+  }
+  EXPECT_TRUE(treeDumpEqual(
+      R"cpp(
+void test() {
+  0xfp1;
+  0xf.p1;
+  0x.fp1;
+  0xf.fp1f;
+}
+)cpp",
+      R"txt(
+*: TranslationUnit
+`-SimpleDeclaration
+  |-void
+  |-SimpleDeclarator
+  | |-test
+  | `-ParametersAndQualifiers
+  |   |-(
+  |   `-)
+  `-CompoundStatement
+    |-{
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-0xfp1
+    | `-;
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-0xf.p1
+    | `-;
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-0x.fp1
+    | `-;
+    |-ExpressionStatement
+    | |-FloatingLiteralExpression
+    | | `-0xf.fp1f
+    | `-;
+    `-}
+)txt"));
+}
+
 TEST_P(SyntaxTreeTest, IntegerLiteral) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(