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[TableGen] Rewrite an assert to not do a bunch unsigned math and then try to ensure the result is a positive number.

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I think the fact that it was explicitly excluding 0 kept this from being a tautology. The exclusion of 0 for the old math was also a bug that's easily hit if the description gets split into multiple lines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238186 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2015-05-26 08:07:49 +00:00
parent 88008cb710
commit c9739ec212
1 changed files with 3 additions and 3 deletions
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6
lib/TableGen/TableGenBackend.cpp
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@ -22,11 +22,11 @@ const size_t MAX_LINE_LEN = 80U;
static void printLine(raw_ostream &OS, const Twine &Prefix, char Fill,
StringRef Suffix) {
size_t Pos = (size_t)OS.tell();
assert((MAX_LINE_LEN - Prefix.str().size() - Suffix.size() > 0) &&
assert((Prefix.str().size() + Suffix.size() <= MAX_LINE_LEN) &&
"header line exceeds max limit");
OS << Prefix;
const size_t e = MAX_LINE_LEN - Suffix.size();
for (size_t i = (size_t)OS.tell() - Pos; i < e; ++i)
for (size_t i = (size_t)OS.tell() - Pos, e = MAX_LINE_LEN - Suffix.size();
i < e; ++i)
OS << Fill;
OS << Suffix << '\n';
}