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diff lib/Target/Mips/MipsSEISelDAGToDAG.cpp @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
line wrap: on
line diff
--- a/lib/Target/Mips/MipsSEISelDAGToDAG.cpp	Tue Oct 13 17:49:56 2015 +0900
+++ b/lib/Target/Mips/MipsSEISelDAGToDAG.cpp	Tue Jan 26 22:53:40 2016 +0900
@@ -115,6 +115,11 @@
     if (MI->isPHI() || MI->isRegTiedToDefOperand(OpNo) || MI->isPseudo())
       continue;
 
+    // Also, we have to check that the register class of the operand
+    // contains the zero register.
+    if (!MRI->getRegClass(MO.getReg())->contains(ZeroReg))
+      continue;
+
     MO.setReg(ZeroReg);
   }