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Add an insertBefore method for attaching previously unattached instructions,

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such as those created by clone(), to a basic block.

llvm-svn: 52424
This commit is contained in:
Owen Anderson 2008-06-17 18:29:27 +00:00
parent 609a53ac86
commit 79605db969
2 changed files with 10 additions and 0 deletions
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4
include/llvm/Instruction.h
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@ -102,6 +102,10 @@ public:
///
void eraseFromParent();
/// insertBefore - Insert an unlinked instructions into a basic block
/// immediately before the specified instruction.
void insertBefore(Instruction *InsertPos);
/// moveBefore - Unlink this instruction from its current basic block and
/// insert it into the basic block that MovePos lives in, right before
/// MovePos.

6
lib/VMCore/Instruction.cpp
View File

@ -68,6 +68,12 @@ void Instruction::eraseFromParent() {
getParent()->getInstList().erase(this);
}
/// insertBefore - Insert an unlinked instructions into a basic block
/// immediately before the specified instruction.
void Instruction::insertBefore(Instruction *InsertPos) {
InsertPos->getParent()->getInstList().insert(InsertPos, this);
}
/// moveBefore - Unlink this instruction from its current basic block and
/// insert it into the basic block that MovePos lives in, right before
/// MovePos.