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authorRoberto Ierusalimschy <roberto@inf.puc-rio.br>2019-03-19 10:53:18 -0300
committerRoberto Ierusalimschy <roberto@inf.puc-rio.br>2019-03-19 10:53:18 -0300
commit9b37a4695ebf50b37b5b4fb279ae948f23b5b6a0 (patch)
tree2a6b0f6c1c2eb962bb383175eb0a67ea81a4564d /lopnames.h
parent1e0c73d5b643707335b06abd2546a83d9439d14c (diff)
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New semantics for the integer 'for' loop
The numerical 'for' loop over integers now uses a precomputed counter to control its number of iteractions. This change eliminates several weird cases caused by overflows (wrap-around) in the control variable. (It also ensures that every integer loop halts.) Also, the special opcodes for the usual case of step==1 were removed. (The new code is already somewhat complex for the usual case, but efficient.)
Diffstat (limited to 'lopnames.h')
-rw-r--r--lopnames.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/lopnames.h b/lopnames.h
index 96d901ac..dfca34d1 100644
--- a/lopnames.h
+++ b/lopnames.h
@@ -84,8 +84,6 @@ static const char *const opnames[] = {
84 "RETURN", 84 "RETURN",
85 "RETURN0", 85 "RETURN0",
86 "RETURN1", 86 "RETURN1",
87 "FORLOOP1",
88 "FORPREP1",
89 "FORLOOP", 87 "FORLOOP",
90 "FORPREP", 88 "FORPREP",
91 "TFORPREP", 89 "TFORPREP",