[llvm] Add ConstantRangeList::subtract(ConstantRange) (PR #97093)
Arthur Eubanks via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 28 12:51:43 PDT 2024
================
@@ -81,6 +81,65 @@ void ConstantRangeList::insert(const ConstantRange &NewRange) {
}
}
+void ConstantRangeList::subtract(const ConstantRange &SubRange) {
+ if (SubRange.isEmptySet())
+ return;
+ assert(!SubRange.isFullSet() && "Do not support full set");
+ assert(SubRange.getLower().slt(SubRange.getUpper()));
+ assert(getBitWidth() == SubRange.getBitWidth());
+ // Handle common cases.
+ if (empty() || Ranges.back().getUpper().sle(SubRange.getLower())) {
+ return;
+ }
----------------
aeubanks wrote:
nit: https://llvm.org/docs/CodingStandards.html#don-t-use-braces-on-simple-single-statement-bodies-of-if-else-loop-statements
https://github.com/llvm/llvm-project/pull/97093
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