From 45cfe9822d8d4401c7998351e54a159a19c09bad Mon Sep 17 00:00:00 2001 From: Matt Arsenault Date: Fri, 22 Feb 2019 19:03:31 +0000 Subject: [PATCH] LiveIntervals: Add removeAllRegUnitsForPhysReg Convenience wrapper for removing the reg units of a physical register. llvm-svn: 354685 --- llvm/include/llvm/CodeGen/LiveIntervals.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/llvm/include/llvm/CodeGen/LiveIntervals.h b/llvm/include/llvm/CodeGen/LiveIntervals.h index d0791be..588b0f9 100644 --- a/llvm/include/llvm/CodeGen/LiveIntervals.h +++ b/llvm/include/llvm/CodeGen/LiveIntervals.h @@ -417,6 +417,15 @@ class VirtRegMap; RegUnitRanges[Unit] = nullptr; } + /// Remove associated live ranges for the register units associated with \p + /// Reg. Subsequent uses should rely on on-demand recomputation. \note This + /// method can result in inconsistent liveness tracking if multiple phyical + /// registers share a regunit, and should be used cautiously. + void removeAllRegUnitsForPhysReg(unsigned Reg) { + for (MCRegUnitIterator Units(Reg, TRI); Units.isValid(); ++Units) + removeRegUnit(*Units); + } + /// Remove value numbers and related live segments starting at position /// \p Pos that are part of any liverange of physical register \p Reg or one /// of its subregisters. -- 2.7.4