From 8ade03463e3cf09b9169cd913384d7385fdeb226 Mon Sep 17 00:00:00 2001 From: Chad Rosier Date: Fri, 11 Nov 2016 19:52:45 +0000 Subject: [PATCH] [AArch64] Update a FIXME comment to reflect current state. NFC. llvm-svn: 286625 --- llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp b/llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp index fc5ed6e9c8cf..7aed5d656009 100644 --- a/llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp +++ b/llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp @@ -1706,8 +1706,10 @@ bool AArch64LoadStoreOpt::runOnMachineFunction(MachineFunction &Fn) { return Modified; } -// FIXME: Do we need/want a pre-alloc pass like ARM has to try to keep -// loads and stores near one another? +// FIXME: Do we need/want a pre-alloc pass like ARM has to try to keep loads and +// stores near one another? Note: The pre-RA instruction scheduler already has +// hooks to try and schedule pairable loads/stores together to improve pairing +// opportunities. Thus, pre-RA pairing pass may not be worth the effort. // FIXME: When pairing store instructions it's very possible for this pass to // hoist a store with a KILL marker above another use (without a KILL marker).