[lib/Support/YAMLTraits] - Don't print leading zeroes when dumping Hex8/Hex16/Hex32 types.

When we produce an YAML output, we also print leading zeroes currently.
An output might look like this:

```
- Name:    .dynsym
  Type:    SHT_DYNSYM
  Address: 0x0000000000001000
  EntSize: 0x0000000000000018
```

There are probably no reason to print leading zeroes.
It just makes harder to read values. This patch stops printing them.
The output becomes like:

```
- Name:    .dynsym
  Type:    SHT_DYNSYM
  Address: 0x1000
  EntSize: 0x18
```

This affects obj2yaml mostly, but also dsymutil and llvm-xray tools output.

Differential revision: https://reviews.llvm.org/D90930

1 files changed, 4 insertions, 8 deletions

diff --git a/llvm/lib/Support/YAMLTraits.cpp b/llvm/lib/Support/YAMLTraits.cpp
index df5e2cee7a0a..1b5c79f6b592 100644
--- a/llvm/lib/Support/YAMLTraits.cpp
+++ b/llvm/lib/Support/YAMLTraits.cpp
@@ -1046,8 +1046,7 @@ StringRef ScalarTraits<float>::input(StringRef Scalar, void *, float &Val) {
 }
 
 void ScalarTraits<Hex8>::output(const Hex8 &Val, void *, raw_ostream &Out) {
-  uint8_t Num = Val;
-  Out << format("0x%02X", Num);
+  Out << format("0x%" PRIX8, (uint8_t)Val);
 }
 
 StringRef ScalarTraits<Hex8>::input(StringRef Scalar, void *, Hex8 &Val) {
@@ -1061,8 +1060,7 @@ StringRef ScalarTraits<Hex8>::input(StringRef Scalar, void *, Hex8 &Val) {
 }
 
 void ScalarTraits<Hex16>::output(const Hex16 &Val, void *, raw_ostream &Out) {
-  uint16_t Num = Val;
-  Out << format("0x%04X", Num);
+  Out << format("0x%" PRIX16, (uint16_t)Val);
 }
 
 StringRef ScalarTraits<Hex16>::input(StringRef Scalar, void *, Hex16 &Val) {
@@ -1076,8 +1074,7 @@ StringRef ScalarTraits<Hex16>::input(StringRef Scalar, void *, Hex16 &Val) {
 }
 
 void ScalarTraits<Hex32>::output(const Hex32 &Val, void *, raw_ostream &Out) {
-  uint32_t Num = Val;
-  Out << format("0x%08X", Num);
+  Out << format("0x%" PRIX32, (uint32_t)Val);
 }
 
 StringRef ScalarTraits<Hex32>::input(StringRef Scalar, void *, Hex32 &Val) {
@@ -1091,8 +1088,7 @@ StringRef ScalarTraits<Hex32>::input(StringRef Scalar, void *, Hex32 &Val) {
 }
 
 void ScalarTraits<Hex64>::output(const Hex64 &Val, void *, raw_ostream &Out) {
-  uint64_t Num = Val;
-  Out << format("0x%016llX", Num);
+  Out << format("0x%" PRIX64, (uint64_t)Val);
 }
 
 StringRef ScalarTraits<Hex64>::input(StringRef Scalar, void *, Hex64 &Val) {