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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-05-28 18:03:08 +0200 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-05-28 18:03:08 +0200 |
| commit | 6cc615bbe5224cf74fc302a6fb72d0de56feb719 (patch) | |
| tree | 858f6ed2731bfdcc47231d0de00139368a045558 /js/src/frontend/BytecodeEmitter.h | |
| parent | 66b55fbc0a2cddcd3a8ef6b15528b3c48c01e4a8 (diff) | |
| download | UXP-6cc615bbe5224cf74fc302a6fb72d0de56feb719.tar UXP-6cc615bbe5224cf74fc302a6fb72d0de56feb719.tar.gz UXP-6cc615bbe5224cf74fc302a6fb72d0de56feb719.tar.lz UXP-6cc615bbe5224cf74fc302a6fb72d0de56feb719.tar.xz UXP-6cc615bbe5224cf74fc302a6fb72d0de56feb719.zip | |
Improve efficiency of (C++) heap allocations related to
BytecodeEmitter::code.
While there, also add some sanity checks and clean up code.
Diffstat (limited to 'js/src/frontend/BytecodeEmitter.h')
| -rw-r--r-- | js/src/frontend/BytecodeEmitter.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/js/src/frontend/BytecodeEmitter.h b/js/src/frontend/BytecodeEmitter.h index 32668a34c..814fa11d4 100644 --- a/js/src/frontend/BytecodeEmitter.h +++ b/js/src/frontend/BytecodeEmitter.h @@ -109,10 +109,12 @@ struct CGYieldOffsetList { void finish(YieldOffsetArray& array, uint32_t prologueLength); }; -// Use zero inline elements because these go on the stack and affect how many -// nested functions are possible. -typedef Vector<jsbytecode, 0> BytecodeVector; -typedef Vector<jssrcnote, 0> SrcNotesVector; +static size_t MaxBytecodeLength = INT32_MAX; +static size_t MaxSrcNotesLength = INT32_MAX; + +// Have a few inline elements to avoid heap allocation for tiny sequences. +typedef Vector<jsbytecode, 256> BytecodeVector; +typedef Vector<jssrcnote, 64> SrcNotesVector; // Linked list of jump instructions that need to be patched. The linked list is // stored in the bytes of the incomplete bytecode that will be patched, so no |