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GH-100923: Embed jump mask in COMPARE_OP oparg (GH-100924)

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Mark Shannon 2023-01-11 20:40:43 +00:00 • committed by GitHub
parent 61f12b8ff7
commit 6e4e14d98f
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12 changed files with 200 additions and 177 deletions
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22
Include/internal/pycore_code.h
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@ -41,7 +41,6 @@ typedef struct {
typedef struct {
uint16_t counter;
uint16_t mask;
} _PyCompareOpCache;
#define INLINE_CACHE_ENTRIES_COMPARE_OP CACHE_ENTRIES(_PyCompareOpCache)
@ -477,6 +476,27 @@ _Py_MakeShimCode(const _PyShimCodeDef *code);
extern uint32_t _Py_next_func_version;
/* Comparison bit masks. */
/* Note this evaluates its arguments twice each */
#define COMPARISON_BIT(x, y) (1 << (2 * ((x) >= (y)) + ((x) <= (y))))
/*
* The following bits are chosen so that the value of
* COMPARSION_BIT(left, right)
* masked by the values below will be non-zero if the
* comparison is true, and zero if it is false */
/* This is for values that are unordered, ie. NaN, not types that are unordered, e.g. sets */
#define COMPARISON_UNORDERED 1
#define COMPARISON_LESS_THAN 2
#define COMPARISON_GREATER_THAN 4
#define COMPARISON_EQUALS 8
#define COMPARISON_NOT_EQUALS (COMPARISON_UNORDERED | COMPARISON_LESS_THAN | COMPARISON_GREATER_THAN)
#ifdef __cplusplus
}
#endif