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Backport r69961 to trunk, replacing JUMP_IF_{TRUE,FALSE} with

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POP_JUMP_IF_{TRUE,FALSE} and JUMP_IF_{TRUE,FALSE}_OR_POP. This avoids executing
a POP_TOP on each conditional and sometimes allows the peephole optimizer to
skip a JUMP_ABSOLUTE entirely. It speeds up list comprehensions significantly.
This commit is contained in:
Jeffrey Yasskin 2009-02-28 19:03:21 +00:00
parent de28d6841e
commit 68d6852006
11 changed files with 228 additions and 178 deletions
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9
Include/opcode.h
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@ -106,9 +106,12 @@ extern "C" {
#define IMPORT_FROM 108 /* Index in name list */
#define JUMP_FORWARD 110 /* Number of bytes to skip */
#define JUMP_IF_FALSE 111 /* "" */
#define JUMP_IF_TRUE 112 /* "" */
#define JUMP_ABSOLUTE 113 /* Target byte offset from beginning of code */
#define JUMP_IF_FALSE_OR_POP 111 /* Target byte offset from beginning
of code */
#define JUMP_IF_TRUE_OR_POP 112 /* "" */
#define JUMP_ABSOLUTE 113 /* "" */
#define POP_JUMP_IF_FALSE 114 /* "" */
#define POP_JUMP_IF_TRUE 115 /* "" */
#define LOAD_GLOBAL 116 /* Index in name list */