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8341900: Optimize DirectCodeBuilder writeBody

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Reviewed-by: liach
This commit is contained in:
Shaojin Wen 2024-10-11 02:17:37 +00:00
parent 24eb360147
commit 472db922fa
1 changed files with 8 additions and 13 deletions
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21
src/java.base/share/classes/jdk/internal/classfile/impl/DirectCodeBuilder.java
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@ -373,24 +373,19 @@ public final class DirectCodeBuilder
dcb.methodInfo.methodTypeSymbol().displayDescriptor())); dcb.methodInfo.methodTypeSymbol().displayDescriptor()));
} }
boolean codeMatch = dcb.original != null && codeAndExceptionsMatch(codeLength);
var context = dcb.context; var context = dcb.context;
if (dcb.original != null && codeAndExceptionsMatch(codeLength)) { if (context.stackMapsWhenRequired()) {
if (context.stackMapsWhenRequired()) { if (codeMatch) {
dcb.attributes.withAttribute(dcb.original.findAttribute(Attributes.stackMapTable()).orElse(null)); dcb.attributes.withAttribute(dcb.original.findAttribute(Attributes.stackMapTable()).orElse(null));
writeCounters(true, buf); writeCounters(true, buf);
} else if (context.generateStackMaps()) { } else {
generateStackMaps(buf);
} else if (context.dropStackMaps()) {
writeCounters(true, buf);
}
} else {
if (context.stackMapsWhenRequired()) {
tryGenerateStackMaps(false, buf); tryGenerateStackMaps(false, buf);
} else if (context.generateStackMaps()) {
generateStackMaps(buf);
} else if (context.dropStackMaps()) {
writeCounters(false, buf);
} }
} else if (context.generateStackMaps()) {
generateStackMaps(buf);
} else if (context.dropStackMaps()) {
writeCounters(codeMatch, buf);
} }
buf.writeInt(codeLength); buf.writeInt(codeLength);