Changes in directory llvm/lib/Target/X86:
X86InstrInfo.cpp updated: 1.88 -> 1.89
---
Log message:
Handle blocks with 2 unconditional branches in AnalyzeBranch.
---
Diffs of the changes: (+10 -0)
X86InstrInfo.cpp | 10 ++++++++++
1 files changed, 10 insertions(+)
Index: llvm/lib/Target/X86/X86InstrInfo.cpp
diff -u llvm/lib/Target/X86/X86InstrInfo.cpp:1.88
llvm/lib/Target/X86/X86InstrInfo.cpp:1.89
--- llvm/lib/Target/X86/X86InstrInfo.cpp:1.88 Fri Jun 8 16:59:56 2007
+++ llvm/lib/Target/X86/X86InstrInfo.cpp Wed Jun 13 12:59:52 2007
@@ -427,6 +427,16 @@
return false;
}
+ // If the block ends with two X86::JMPs, handle it. The second one is not
+ // executed, so remove it.
+ if (SecondLastInst->getOpcode() == X86::JMP &&
+ LastInst->getOpcode() == X86::JMP) {
+ TBB = SecondLastInst->getOperand(0).getMachineBasicBlock();
+ I = LastInst;
+ I->eraseFromParent();
+ return false;
+ }
+
// Otherwise, can't handle this.
return true;
}
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
