[parser] Decreased size of Bailout/Abort reason.

This reduces the enum size to only take up one byte, hence decreasing
class size.

Bug: v8:7926
Change-Id: Ie50cfcd48541e44394814f375fd72f2b65722fdf
Reviewed-on: https://chromium-review.googlesource.com/1186582
Commit-Queue: Florian Sattler <sattlerf@google.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55378}

src/bailout-reason.h

@@ -5,6 +5,8 @@
 #ifndef V8_BAILOUT_REASON_H_
 #define V8_BAILOUT_REASON_H_
 
+#include <cstdint>
+
 namespace v8 {
 namespace internal {
 
@@ -114,11 +116,11 @@ namespace internal {
   V(kOptimizationDisabledForTest, "Optimization disabled for test")
 
 #define ERROR_MESSAGES_CONSTANTS(C, T) C,
-enum class BailoutReason {
+enum class BailoutReason : uint8_t {
   BAILOUT_MESSAGES_LIST(ERROR_MESSAGES_CONSTANTS) kLastErrorMessage
 };
 
-enum class AbortReason {
+enum class AbortReason : uint8_t {
   ABORT_MESSAGES_LIST(ERROR_MESSAGES_CONSTANTS) kLastErrorMessage
 };
 #undef ERROR_MESSAGES_CONSTANTS

src/compiler/simplified-operator.h

@@ -24,7 +24,7 @@ namespace v8 {
 namespace internal {
 
 // Forward declarations.
-enum class AbortReason;
+enum class AbortReason : uint8_t;
 class Zone;
 
 namespace compiler {

src/mips/macro-assembler-mips.h

@@ -39,7 +39,7 @@ constexpr Register kRuntimeCallArgvRegister = a2;
 constexpr Register kWasmInstanceRegister = a0;
 
 // Forward declarations
-enum class AbortReason;
+enum class AbortReason : uint8_t;
 
 // Reserved Register Usage Summary.
 //

src/mips64/macro-assembler-mips64.h

@@ -39,7 +39,7 @@ constexpr Register kRuntimeCallArgvRegister = a2;
 constexpr Register kWasmInstanceRegister = a0;
 
 // Forward declarations.
-enum class AbortReason;
+enum class AbortReason : uint8_t;
 
 // Reserved Register Usage Summary.
 //