Compute whether a signed subtract of LHS and RHS can overflow.
Synopsis
Declared in <llvm/Analysis/ValueTracking.h>
OverflowResult
computeOverflowForSignedSub(
Value const* LHS,
Value const* RHS,
SimplifyQuery const& SQ);Return Value
Overflow classification for the signed subtract.
Parameters
Name |
Description |
LHS |
Left‐hand operand of the subtract. |
RHS |
Right‐hand operand of the subtract. |
SQ |
Simplify query providing context for the analysis. |
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