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| -rw-r--r-- | docs/LangRef.html | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index b0bb562e7f..b3e5813891 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -2136,7 +2136,7 @@ can be constant folded to undef because the undef could be an SNaN, and fdiv is not (currently) defined on SNaN's. However, in the second example, we can make a more aggressive assumption: because the undef is allowed to be an arbitrary value, we are allowed to assume that it could be zero. Since a divide by zero -it has <em>undefined behavior</em>, we are allowed to assume that the operation +has <em>undefined behavior</em>, we are allowed to assume that the operation does not execute at all. This allows us to delete the divide and all code after it: since the undefined operation "can't happen", the optimizer can assume that it occurs in dead code. |