From 145449b1e420787bb99721a429341fa6be3adfb6 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 3 Jul 2022 16:10:23 +0200
Subject: Vendor import of llvm-project main
 llvmorg-15-init-15358-g53dc0f107877.

---
 llvm/lib/DebugInfo/CodeView/CodeViewRecordIO.cpp | 33 +++++++++++++++++-------
 1 file changed, 24 insertions(+), 9 deletions(-)

(limited to 'llvm/lib/DebugInfo/CodeView/CodeViewRecordIO.cpp')

diff --git a/llvm/lib/DebugInfo/CodeView/CodeViewRecordIO.cpp b/llvm/lib/DebugInfo/CodeView/CodeViewRecordIO.cpp
index 1af59ff679dd..a66f9af98835 100644
--- a/llvm/lib/DebugInfo/CodeView/CodeViewRecordIO.cpp
+++ b/llvm/lib/DebugInfo/CodeView/CodeViewRecordIO.cpp
@@ -8,7 +8,9 @@
 
 #include "llvm/DebugInfo/CodeView/CodeViewRecordIO.h"
 #include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/DebugInfo/CodeView/GUID.h"
 #include "llvm/DebugInfo/CodeView/RecordSerialization.h"
+#include "llvm/DebugInfo/CodeView/TypeIndex.h"
 #include "llvm/Support/BinaryStreamReader.h"
 #include "llvm/Support/BinaryStreamWriter.h"
 
@@ -68,10 +70,10 @@ uint32_t CodeViewRecordIO::maxFieldLength() const {
   Optional<uint32_t> Min = Limits.front().bytesRemaining(Offset);
   for (auto X : makeArrayRef(Limits).drop_front()) {
     Optional<uint32_t> ThisMin = X.bytesRemaining(Offset);
-    if (ThisMin.hasValue())
-      Min = (Min.hasValue()) ? std::min(*Min, *ThisMin) : *ThisMin;
+    if (ThisMin)
+      Min = Min ? std::min(*Min, *ThisMin) : *ThisMin;
   }
-  assert(Min.hasValue() && "Every field must have a maximum length!");
+  assert(Min && "Every field must have a maximum length!");
 
   return *Min;
 }
@@ -279,17 +281,24 @@ void CodeViewRecordIO::emitEncodedSignedInteger(const int64_t &Value,
   // FIXME: There are no test cases covering this function.
   // This may be because we always consider enumerators to be unsigned.
   // See FIXME at CodeViewDebug.cpp : CodeViewDebug::lowerTypeEnum.
-  if (Value >= std::numeric_limits<int8_t>::min()) {
+  if (Value < LF_NUMERIC && Value >= 0) {
+    emitComment(Comment);
+    Streamer->emitIntValue(Value, 2);
+    incrStreamedLen(2);
+  } else if (Value >= std::numeric_limits<int8_t>::min() &&
+             Value <= std::numeric_limits<int8_t>::max()) {
     Streamer->emitIntValue(LF_CHAR, 2);
     emitComment(Comment);
     Streamer->emitIntValue(Value, 1);
     incrStreamedLen(3);
-  } else if (Value >= std::numeric_limits<int16_t>::min()) {
+  } else if (Value >= std::numeric_limits<int16_t>::min() &&
+             Value <= std::numeric_limits<int16_t>::max()) {
     Streamer->emitIntValue(LF_SHORT, 2);
     emitComment(Comment);
     Streamer->emitIntValue(Value, 2);
     incrStreamedLen(4);
-  } else if (Value >= std::numeric_limits<int32_t>::min()) {
+  } else if (Value >= std::numeric_limits<int32_t>::min() &&
+             Value <= std::numeric_limits<int32_t>::max()) {
     Streamer->emitIntValue(LF_LONG, 2);
     emitComment(Comment);
     Streamer->emitIntValue(Value, 4);
@@ -328,17 +337,23 @@ void CodeViewRecordIO::emitEncodedUnsignedInteger(const uint64_t &Value,
 }
 
 Error CodeViewRecordIO::writeEncodedSignedInteger(const int64_t &Value) {
-  if (Value >= std::numeric_limits<int8_t>::min()) {
+  if (Value < LF_NUMERIC && Value >= 0) {
+    if (auto EC = Writer->writeInteger<int16_t>(Value))
+      return EC;
+  } else if (Value >= std::numeric_limits<int8_t>::min() &&
+             Value <= std::numeric_limits<int8_t>::max()) {
     if (auto EC = Writer->writeInteger<uint16_t>(LF_CHAR))
       return EC;
     if (auto EC = Writer->writeInteger<int8_t>(Value))
       return EC;
-  } else if (Value >= std::numeric_limits<int16_t>::min()) {
+  } else if (Value >= std::numeric_limits<int16_t>::min() &&
+             Value <= std::numeric_limits<int16_t>::max()) {
     if (auto EC = Writer->writeInteger<uint16_t>(LF_SHORT))
       return EC;
     if (auto EC = Writer->writeInteger<int16_t>(Value))
       return EC;
-  } else if (Value >= std::numeric_limits<int32_t>::min()) {
+  } else if (Value >= std::numeric_limits<int32_t>::min() &&
+             Value <= std::numeric_limits<int32_t>::max()) {
     if (auto EC = Writer->writeInteger<uint16_t>(LF_LONG))
       return EC;
     if (auto EC = Writer->writeInteger<int32_t>(Value))
-- 
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