[Local] Delete a redundant check. NFC

isInstructionTriviallyDead also performs the use_empty() check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353637 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index 062bbcdae2ca4b3f001b29f32e32fafecd7f545a..933a69caaaa3e36023cfbf4e5a18902f0273da76 100644 (file)
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -429,7 +429,7 @@ bool llvm::wouldInstructionBeTriviallyDead(Instruction *I,
 bool llvm::RecursivelyDeleteTriviallyDeadInstructions(
     Value *V, const TargetLibraryInfo *TLI, MemorySSAUpdater *MSSAU) {
   Instruction *I = dyn_cast<Instruction>(V);
-  if (!I || !I->use_empty() || !isInstructionTriviallyDead(I, TLI))
+  if (!I || !isInstructionTriviallyDead(I, TLI))
     return false;
 
   SmallVector<Instruction*, 16> DeadInsts;