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Avoid UB in maxIntN(64).
authorJustin Lebar <jlebar@google.com>
Sun, 17 Jul 2016 18:19:26 +0000 (18:19 +0000)
committerJustin Lebar <jlebar@google.com>
Sun, 17 Jul 2016 18:19:26 +0000 (18:19 +0000)
commitf36e8699d3c7caab41f1ebd77ae1f81ba9d0598f
tree287474c8f005a4131df8da85180405226b3dacf0tree | snapshot
parent61e00f94a5618dc02162869c57b19afb04f48a5bcommit | diff
Avoid UB in maxIntN(64).

Summary:
Previously we were relying on 2's complement underflow in an int64_t.
Now we cast to a uint64_t so we explicitly get the behavior we want.

Reviewers: rnk

Subscribers: dylanmckay, llvm-commits

Differential Revision: https://reviews.llvm.org/D22445

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275722 91177308-0d34-0410-b5e6-96231b3b80d8
include/llvm/Support/MathExtras.h diff | blob | history
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