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Add CreateAlignmentAssumption to IRBuilder

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Clang CodeGen had a utility function for creating pointer alignment assumptions
using the @llvm.assume intrinsic. This functionality will also be needed by the
inliner (to preserve function-argument alignment attributes when inlining), so
this moves the utility function into IRBuilder where it can be used both by
Clang CodeGen and also other LLVM-level code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219875 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2014-10-15 23:44:22 +00:00
parent fb9d61a8d6
commit 76ce614af7
2 changed files with 53 additions and 0 deletions
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11
lib/IR/IRBuilder.cpp
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@ -172,3 +172,14 @@ CallInst *IRBuilderBase::CreateLifetimeEnd(Value *Ptr, ConstantInt *Size) {
Value *TheFn = Intrinsic::getDeclaration(M, Intrinsic::lifetime_end);
return createCallHelper(TheFn, Ops, this);
}
CallInst *IRBuilderBase::CreateAssumption(Value *Cond) {
assert(Cond->getType() == getInt1Ty() &&
"an assumption condition must be of type i1");
Value *Ops[] = { Cond };
Module *M = BB->getParent()->getParent();
Value *FnAssume = Intrinsic::getDeclaration(M, Intrinsic::assume);
return createCallHelper(FnAssume, Ops, this);
}