[llvm] c4ccd6e - MachineSink: Remove unnecessary empty block check

[Matt Arsenault via llvm-commits]

Author: Matt Arsenault
Date: 2023-07-14T18:46:18-04:00
New Revision: c4ccd6e3d295da69fa590d0fd1fd0b74a174ad1d

URL: https://github.com/llvm/llvm-project/commit/c4ccd6e3d295da69fa590d0fd1fd0b74a174ad1d
DIFF: https://github.com/llvm/llvm-project/commit/c4ccd6e3d295da69fa590d0fd1fd0b74a174ad1d.diff

LOG: MachineSink: Remove unnecessary empty block check

Added: 
    

Modified: 
    llvm/lib/CodeGen/MachineSink.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/MachineSink.cpp b/llvm/lib/CodeGen/MachineSink.cpp
index 07f2f6c2e8b014..3b0166ee139fc1 100644
--- a/llvm/lib/CodeGen/MachineSink.cpp
+++ b/llvm/lib/CodeGen/MachineSink.cpp
@@ -276,8 +276,6 @@ static bool blockPrologueInterferes(const MachineBasicBlock *BB,
                                     const TargetRegisterInfo *TRI,
                                     const TargetInstrInfo *TII,
                                     const MachineRegisterInfo *MRI) {
-  if (BB->begin() == End)
-    return false; // no prologue
   for (MachineBasicBlock::const_iterator PI = BB->getFirstNonPHI(); PI != End;
        ++PI) {
     // Only check target defined prologue instructions