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author | Dan Gohman <gohman@apple.com> | 2009-08-20 17:08:17 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2009-08-20 17:08:17 +0000 |
commit | b255b88f06b81523c64369fe686fedab0225de54 (patch) | |
tree | 54a9107679e4fb5d4b04edbb379234290e411de3 /docs/LangRef.html | |
parent | 36891e654832d3b2191e4c5586c7818e237e6b7f (diff) | |
download | external_llvm-b255b88f06b81523c64369fe686fedab0225de54.zip external_llvm-b255b88f06b81523c64369fe686fedab0225de54.tar.gz external_llvm-b255b88f06b81523c64369fe686fedab0225de54.tar.bz2 |
Clarify a few things in the inbounds description.
Describing inbounds in terms of infinitely precise arithmetic prohibits
the assumption address-space-sized integer arithmetic will wrap, with
a wrapped-around value landing within the same object.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79538 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/LangRef.html')
-rw-r--r-- | docs/LangRef.html | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index 9ef7cce..384c120 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -4004,11 +4004,11 @@ entry: <p>If the <tt>inbounds</tt> keyword is present, the result value of the <tt>getelementptr</tt> is undefined if the base pointer is not an <i>in bounds</i> address of an allocated object, or if any of the addresses - formed by successive addition of the offsets implied by the indices to - the base address are not an <i>in bounds</i> address of that allocated - object. + that would be formed by successive addition of the offsets implied by the + indices to the base address with infinitely precise arithmetic are not an + <i>in bounds</i> address of that allocated object. The <i>in bounds</i> addresses for an allocated object are all the addresses - that point into the object, plus the address one past the end.</p> + that point into the object, plus the address one byte past the end.</p> <p>If the <tt>inbounds</tt> keyword is not present, the offsets are added to the base address with silently-wrapping two's complement arithmetic, and |