diff --git a/llvm/include/llvm/Support/ScopedPrinter.h b/llvm/include/llvm/Support/ScopedPrinter.h
--- a/llvm/include/llvm/Support/ScopedPrinter.h
+++ b/llvm/include/llvm/Support/ScopedPrinter.h
@@ -234,6 +234,14 @@
     startLine() << Label << ": " << Value << "\n";
   }
 
+  virtual void printNumber(StringRef Label, float Value) {
+    startLine() << Label << ": " << format("%5.1f", Value) << "\n";
+  }
+
+  virtual void printNumber(StringRef Label, double Value) {
+    startLine() << Label << ": " << format("%5.1f", Value) << "\n";
+  }
+
   template <typename T>
   void printNumber(StringRef Label, StringRef Str, T Value) {
     printNumberImpl(Label, Str, to_string(Value));
@@ -586,6 +594,14 @@
     JOS.attribute(Label, Value);
   }
 
+  void printNumber(StringRef Label, float Value) override {
+    JOS.attribute(Label, Value);
+  }
+
+  void printNumber(StringRef Label, double Value) override {
+    JOS.attribute(Label, Value);
+  }
+
   void printNumber(StringRef Label, const APSInt &Value) override {
     JOS.attributeBegin(Label);
     printAPSInt(Value);
diff --git a/llvm/unittests/Support/ScopedPrinterTest.cpp b/llvm/unittests/Support/ScopedPrinterTest.cpp
--- a/llvm/unittests/Support/ScopedPrinterTest.cpp
+++ b/llvm/unittests/Support/ScopedPrinterTest.cpp
@@ -9,6 +9,7 @@
 #include "llvm/Support/ScopedPrinter.h"
 #include "llvm/ADT/APSInt.h"
 #include "gtest/gtest.h"
+#include <cmath>
 #include <vector>
 
 using namespace llvm;
@@ -553,6 +554,28 @@
     W.printNumber("apsint", LargeNum);
 
     W.printNumber("label", "value", 0);
+
+    float MaxFloat = std::numeric_limits<float>::max();
+    float MinFloat = std::numeric_limits<float>::min();
+    float InfFloat = std::numeric_limits<float>::infinity();
+    float NaNFloat = std::nanf("1");
+    W.printNumber("float-max", MaxFloat);
+    W.printNumber("float-min", MinFloat);
+    W.printNumber("float-inf", InfFloat);
+    W.printNumber("float-nan", NaNFloat);
+    W.printNumber("float-42.0", 42.0f);
+    W.printNumber("float-42.5625", 42.5625f);
+
+    double MaxDouble = std::numeric_limits<double>::max();
+    double MinDouble = std::numeric_limits<double>::min();
+    double InfDouble = std::numeric_limits<double>::infinity();
+    double NaNDouble = std::nan("1");
+    W.printNumber("double-max", MaxDouble);
+    W.printNumber("double-min", MinDouble);
+    W.printNumber("double-inf", InfDouble);
+    W.printNumber("double-nan", NaNDouble);
+    W.printNumber("double-42.0", 42.0);
+    W.printNumber("double-42.5625", 42.5625);
   };
 
   const char *ExpectedOut = R"(uint64_t-max: 18446744073709551615
@@ -573,6 +596,18 @@
 int8_t-min: -128
 apsint: 9999999999999999999999
 label: value (0)
+float-max: 340282346638528859811704183484516925440.0
+float-min:   0.0
+float-inf:   inf
+float-nan:   nan
+float-42.0:  42.0
+float-42.5625:  42.6
+double-max: 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.0
+double-min:   0.0
+double-inf:   inf
+double-nan:   nan
+double-42.0:  42.0
+double-42.5625:  42.6
 )";
 
   const char *JSONExpectedOut = R"({
@@ -596,7 +631,19 @@
   "label": {
     "Name": "value",
     "Value": 0
-  }
+  },
+  "float-max": 3.4028234663852886e+38,
+  "float-min": 1.1754943508222875e-38,
+  "float-inf": inf,
+  "float-nan": nan,
+  "float-42.0": 42,
+  "float-42.5625": 42.5625,
+  "double-max": 1.7976931348623157e+308,
+  "double-min": 2.2250738585072014e-308,
+  "double-inf": inf,
+  "double-nan": nan,
+  "double-42.0": 42,
+  "double-42.5625": 42.5625
 })";
   verifyAll(ExpectedOut, JSONExpectedOut, PrintFunc);
 }