No need to remove dead range from soon-to-be-dead live interval. Its val# may be out of whack.

llvm-svn: 41024
2007-08-12 01:26:19 +00:00 · 2007-08-12 01:26:19 +00:00 · af21e9550e
parent 460e34afed
commit af21e9550e
1 changed files with 3 additions and 3 deletions
--- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
@ -316,9 +316,9 @@ bool SimpleRegisterCoalescing::JoinCopy(MachineInstr *CopyMI,
    }

    if (isShorten || isDead) {
-      // Shorten the live interval.
-      LiveInterval &LiveInInt = (repSrcReg == DstInt.reg) ? DstInt : SrcInt;
-      LiveInInt.removeRange(RemoveStart, RemoveEnd);
+      // Shorten the destination live interval.
+      if (repSrcReg == DstInt.reg)
+        DstInt.removeRange(RemoveStart, RemoveEnd);
    }
  } else {
    // Coalescing failed.