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469f191a85
Uses three registers to cache values at the top of the evaluation stack This significantly reduces memory traffic for smaller, more common uops.
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#ifndef Py_CORE_UOP_H
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#define Py_CORE_UOP_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_BUILD_CORE
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# error "this header requires Py_BUILD_CORE define"
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#endif
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#include <stdint.h>
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/* Depending on the format,
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* the 32 bits between the oparg and operand are:
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* UOP_FORMAT_TARGET:
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* uint32_t target;
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* UOP_FORMAT_JUMP
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* uint16_t jump_target;
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* uint16_t error_target;
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*/
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typedef struct _PyUOpInstruction{
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uint16_t opcode:15;
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uint16_t format:1;
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uint16_t oparg;
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union {
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uint32_t target;
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struct {
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uint16_t jump_target;
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uint16_t error_target;
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};
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};
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uint64_t operand0; // A cache entry
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uint64_t operand1;
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#ifdef Py_STATS
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uint64_t execution_count;
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#endif
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} _PyUOpInstruction;
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// This is the length of the trace we translate initially.
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#ifdef Py_DEBUG
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// With asserts, the stencils are a lot larger
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#define UOP_MAX_TRACE_LENGTH 2000
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#else
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#define UOP_MAX_TRACE_LENGTH 5000
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#endif
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#define UOP_BUFFER_SIZE (UOP_MAX_TRACE_LENGTH * sizeof(_PyUOpInstruction))
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/* Bloom filter with m = 256
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* https://en.wikipedia.org/wiki/Bloom_filter */
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#define _Py_BLOOM_FILTER_WORDS 8
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typedef struct {
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uint32_t bits[_Py_BLOOM_FILTER_WORDS];
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} _PyBloomFilter;
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_INTERNAL_UOP_H */
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