[llvm-commits] CVS: llvm/lib/Target/Alpha/AlphaInstrInfo.cpp

[Dale Johannesen]

Changes in directory llvm/lib/Target/Alpha:

AlphaInstrInfo.cpp updated: 1.20 -> 1.21
---
Log message:

Handle blocks with 2 unconditional branches in AnalyzeBranch.


---
Diffs of the changes:  (+10 -0)

 AlphaInstrInfo.cpp |   10 ++++++++++
 1 files changed, 10 insertions(+)


Index: llvm/lib/Target/Alpha/AlphaInstrInfo.cpp
diff -u llvm/lib/Target/Alpha/AlphaInstrInfo.cpp:1.20 llvm/lib/Target/Alpha/AlphaInstrInfo.cpp:1.21
--- llvm/lib/Target/Alpha/AlphaInstrInfo.cpp:1.20	Fri Jun  8 16:59:56 2007
+++ llvm/lib/Target/Alpha/AlphaInstrInfo.cpp	Wed Jun 13 12:59:52 2007
@@ -200,6 +200,16 @@
     return false;
   }
   
+  // If the block ends with two Alpha::BRs, handle it.  The second one is not
+  // executed, so remove it.
+  if (SecondLastInst->getOpcode() == Alpha::BR && 
+      LastInst->getOpcode() == Alpha::BR) {
+    TBB = SecondLastInst->getOperand(0).getMachineBasicBlock();
+    I = LastInst;
+    I->eraseFromParent();
+    return false;
+  }
+
   // Otherwise, can't handle this.
   return true;
 }