diff options
| author | Dan Gohman <gohman@apple.com> | 2009-10-09 23:27:56 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-10-09 23:27:56 +0000 |
| commit | a70dca156fa76d452f54829b5c5f962ddfd94ef2 (patch) | |
| tree | 31322fbef91a904807aea13e1bc2ab409c0042c6 /lib/CodeGen/DeadMachineInstructionElim.cpp | |
| parent | ac1ceb3dd33cb79ecb0dbd64b6abafa7ce067c5f (diff) | |
Factor out LiveIntervalAnalysis' code to determine whether an instruction
is trivially rematerializable and integrate it into
TargetInstrInfo::isTriviallyReMaterializable. This way, all places that
need to know whether an instruction is rematerializable will get the
same answer.
This enables the useful parts of the aggressive-remat option by
default -- using AliasAnalysis to determine whether a memory location
is invariant, and removes the questionable parts -- rematting operations
with virtual register inputs that may not be live everywhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83687 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/DeadMachineInstructionElim.cpp')
| -rw-r--r-- | lib/CodeGen/DeadMachineInstructionElim.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/DeadMachineInstructionElim.cpp b/lib/CodeGen/DeadMachineInstructionElim.cpp index e104d8cec0..078ed3d31b 100644 --- a/lib/CodeGen/DeadMachineInstructionElim.cpp +++ b/lib/CodeGen/DeadMachineInstructionElim.cpp @@ -53,7 +53,7 @@ FunctionPass *llvm::createDeadMachineInstructionElimPass() { bool DeadMachineInstructionElim::isDead(const MachineInstr *MI) const { // Don't delete instructions with side effects. bool SawStore = false; - if (!MI->isSafeToMove(TII, SawStore)) + if (!MI->isSafeToMove(TII, SawStore, 0)) return false; // Examine each operand. |