commit 85abd983f26b9ea2b0bdc58c03f9427a7a3602c3
author Dan Gohman <gohman@apple.com> Mon Apr 13 15:16:56 2009 +0000
committer Dan Gohman <gohman@apple.com> Mon Apr 13 15:16:56 2009 +0000
tree 350e1a765b6bd407b967034ba7688044d95962e7
parent 712a351c42d5378ce02532802b51c5fb60e868af

Add an assertion to verify that a copy was actually emitted.

llvm-svn: 68953

llvm/lib/CodeGen/TwoAddressInstructionPass.cpp

diff --git a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
index 8aa866e..20770a1 100644
--- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -857,7 +857,8 @@
             ReMatRegs.set(regB);
             ++NumReMats;
           } else {
-            TII->copyRegToReg(*mbbi, mi, regA, regB, rc, rc);
+            bool Emitted = TII->copyRegToReg(*mbbi, mi, regA, regB, rc, rc);
+            assert(Emitted && "Unable to issue a copy instruction!\n");
           }
 
           MachineBasicBlock::iterator prevMI = prior(mi);