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| author | Bill Wendling <isanbard@gmail.com> | 2008-05-28 22:52:47 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-05-28 22:52:47 +0000 |
| commit | a8db14796b22ba7798ef94fc831d56c8a11d4e2a (patch) | |
| tree | 9536bba7b5957e577c50dd4eec7090e75cd3d2a9 /lib/CodeGen/TwoAddressInstructionPass.cpp | |
| parent | 745825f431920662e97bdab5c1bcfac62e48c52f (diff) | |
| download | llvm-a8db14796b22ba7798ef94fc831d56c8a11d4e2a.tar.gz llvm-a8db14796b22ba7798ef94fc831d56c8a11d4e2a.tar.bz2 llvm-a8db14796b22ba7798ef94fc831d56c8a11d4e2a.tar.xz | |
Check the "isSafeToMove" predicate, which has a series of tests to make sure
that it's safe to remat an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51659 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
| -rw-r--r-- | lib/CodeGen/TwoAddressInstructionPass.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index 145f80ae74..5f0a923f99 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -330,8 +330,10 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { InstructionRearranged: const TargetRegisterClass* rc = MF.getRegInfo().getRegClass(regA); MachineInstr *Orig = MRI->getVRegDef(regB); + bool SawStore = false; - if (EnableReMat && Orig && TII->isTriviallyReMaterializable(Orig)) { + if (EnableReMat && Orig && Orig->isSafeToMove(TII, SawStore) && + TII->isTriviallyReMaterializable(Orig)) { TII->reMaterialize(*mbbi, mi, regA, Orig); ReMattedInstrs.insert(Orig); } else { |