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Add an explicit insert point argument to SplitBlockAndInsertIfThen.
Currently SplitBlockAndInsertIfThen requires that branch condition is an Instruction itself, which is very inconvenient, because it is sometimes an Operator, or even a Constant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197677 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -183,27 +183,27 @@ ReturnInst *FoldReturnIntoUncondBranch(ReturnInst *RI, BasicBlock *BB,
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BasicBlock *Pred);
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/// SplitBlockAndInsertIfThen - Split the containing block at the
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/// specified instruction - everything before and including Cmp stays
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/// in the old basic block, and everything after Cmp is moved to a
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/// specified instruction - everything before and including SplitBefore stays
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/// in the old basic block, and everything after SplitBefore is moved to a
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/// new block. The two blocks are connected by a conditional branch
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/// (with value of Cmp being the condition).
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/// Before:
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/// Head
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/// Cmp
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/// SplitBefore
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/// Tail
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/// After:
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/// Head
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/// Cmp
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/// if (Cmp)
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/// if (Cond)
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/// ThenBlock
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/// SplitBefore
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/// Tail
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///
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/// If Unreachable is true, then ThenBlock ends with
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/// UnreachableInst, otherwise it branches to Tail.
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/// Returns the NewBasicBlock's terminator.
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TerminatorInst *SplitBlockAndInsertIfThen(Instruction *Cmp,
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bool Unreachable, MDNode *BranchWeights = 0);
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TerminatorInst *SplitBlockAndInsertIfThen(Value *Cond, Instruction *SplitBefore,
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bool Unreachable,
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MDNode *BranchWeights = 0);
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///
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/// GetIfCondition - Check whether BB is the merge point of a if-region.
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@@ -211,7 +211,6 @@ TerminatorInst *SplitBlockAndInsertIfThen(Instruction *Cmp,
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/// BB will be taken. Also, return by references the block that will be
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/// entered from if the condition is true, and the block that will be
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/// entered if the condition is false.
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Value *GetIfCondition(BasicBlock *BB, BasicBlock *&IfTrue,
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BasicBlock *&IfFalse);
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} // End llvm namespace
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