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Two things. Preserve the unwind_to when splitting a BB.

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Add the ability to remove just one instance of a BB from a phi node. This fixes
the compile error in the tree now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48085 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2008-03-09 05:04:48 +00:00
parent c0d025f54f
commit c6694228fa
3 changed files with 19 additions and 7 deletions
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6
include/llvm/BasicBlock.h
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@@ -185,7 +185,11 @@ public:
/// DontDeleteUselessPHIs will keep PHIs that have one value or the same
/// value for all entries.
///
void removePredecessor(BasicBlock *Pred, bool DontDeleteUselessPHIs = false);
/// OnlyDeleteOne will only remove one entry from a PHI, in case there were
/// duplicate entries for the Pred.
///
void removePredecessor(BasicBlock *Pred, bool DontDeleteUselessPHIs = false,
bool OnlyDeleteOne = false);
/// splitBasicBlock - This splits a basic block into two at the specified
/// instruction. Note that all instructions BEFORE the specified iterator