[llvm] r371369 - [SystemZ] NFC: use clearRegisterDeads() in SystemZElimCompare.cpp

[Jonas Paulsson via llvm-commits]

Author: jonpa
Date: Mon Sep  9 00:58:57 2019
New Revision: 371369

URL: http://llvm.org/viewvc/llvm-project?rev=371369&view=rev
Log:
[SystemZ]  NFC: use clearRegisterDeads() in SystemZElimCompare.cpp

This is simpler than using findRegisterDefOperandIdx() + setIsDead().

Review: Ulrich Weigand.

Modified:
    llvm/trunk/lib/Target/SystemZ/SystemZElimCompare.cpp

Modified: llvm/trunk/lib/Target/SystemZ/SystemZElimCompare.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/SystemZ/SystemZElimCompare.cpp?rev=371369&r1=371368&r2=371369&view=diff
==============================================================================
--- llvm/trunk/lib/Target/SystemZ/SystemZElimCompare.cpp (original)
+++ llvm/trunk/lib/Target/SystemZ/SystemZElimCompare.cpp Mon Sep  9 00:58:57 2019
@@ -378,11 +378,8 @@ bool SystemZElimCompare::adjustCCMasksFo
   }
 
   // CC is now live after MI.
-  if (!ConvOpc) {
-    int CCDef = MI.findRegisterDefOperandIdx(SystemZ::CC, false, true, TRI);
-    assert(CCDef >= 0 && "Couldn't find CC set");
-    MI.getOperand(CCDef).setIsDead(false);
-  }
+  if (!ConvOpc)
+    MI.clearRegisterDeads(SystemZ::CC);
 
   // Check if MI lies before Compare.
   bool BeforeCmp = false;