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Code Issues 1 Releases Wiki Activity

Increase reference accuracy of on-stack close envs.

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Using a bitset to indicate which stack values are upvalues, we
can more accurately track when a reference to a stack value
persists after the stack frame exits.
This commit is contained in:
Calvin Rose
2020-03-18 09:30:10 -05:00
parent 4a7b18d841
commit b0d8369534
9 changed files with 102 additions and 21 deletions
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2
src/include/janet.h
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@@ -805,6 +805,7 @@ struct JanetAbstractHead {
#define JANET_FUNCDEF_FLAG_HASENVS 0x400000
#define JANET_FUNCDEF_FLAG_HASSOURCEMAP 0x800000
#define JANET_FUNCDEF_FLAG_STRUCTARG 0x1000000
#define JANET_FUNCDEF_FLAG_HASCLOBITSET 0x2000000
#define JANET_FUNCDEF_FLAG_TAG 0xFFFF
/* Source mapping structure for a bytecode instruction */
@@ -820,6 +821,7 @@ struct JanetFuncDef {
Janet *constants;
JanetFuncDef **defs;
uint32_t *bytecode;
uint32_t *closure_bitset; /* Bit set indicating which slots can be referenced by closures. */
/* Various debug information */
JanetSourceMapping *sourcemap;