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Also adding the variant "(A>>C) == (B>>C) -> (A^B) < (1<<C)" Bootstrapped on x86, aarch64 and rv64. Regression tested on x86 and aarch64. Changes from v2: - add type_has_mode_precision_p () check - add types_match() to simplify types comparison - add rshift operand checks (must not be negative, must not surpass type size) - v2 link: https://gcc.gnu.org/pipermail/gcc-patches/2026-March/711284.html PR tree-optimization/110010 gcc/ChangeLog: * match.pd (`(A>>C) NE|EQ (B>>C) -> (A^B) GE|LT (1<<C)`): New pattern. gcc/testsuite/ChangeLog: * gcc.dg/tree-ssa/pr110010.c: New test.
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