LibJS/Bytecode: Do basic compare-and-jump peephole optimization

We now fuse sequences like [LessThan, JumpIf] to JumpLessThan. This is only allowed for temporaries (i.e VM registers) with no other references to them.
Author: https://github.com/awesomekling Commit: 7654da3851 Pull-request: https://github.com/SerenityOS/serenity/pull/24276 Reviewed-by: https://github.com/Hendiadyoin1 Reviewed-by: https://github.com/shannonbooth
2025-09-03 08:08:43 +00:00 · 2024-05-09 15:13:31 +02:00 · 2024-05-09 15:13:31 +02:00 · 7654da3851 · 2024-07-18 00:41:35 +09:00
commit 7654da3851
parent 9bcb0feb4d
8 changed files with 166 additions and 28 deletions
--- a/Userland/Libraries/LibJS/Bytecode/Instruction.h
+++ b/Userland/Libraries/LibJS/Bytecode/Instruction.h
@ -70,8 +70,16 @@
    O(IteratorToArray)                 \
    O(Jump)                            \
    O(JumpFalse)                       \
+    O(JumpGreaterThan)                 \
+    O(JumpGreaterThanEquals)           \
    O(JumpIf)                          \
+    O(JumpLessThan)                    \
+    O(JumpLessThanEquals)              \
+    O(JumpLooselyEquals)               \
+    O(JumpLooselyInequals)             \
    O(JumpNullish)                     \
+    O(JumpStrictlyEquals)              \
+    O(JumpStrictlyInequals)            \
    O(JumpTrue)                        \
    O(JumpUndefined)                   \
    O(LeaveFinally)                    \