From 0bef562ea253878ee92a1eaf6db05b0c2edfa74c Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 10 Oct 2009 23:41:48 +0000 Subject: [PATCH] add a simple helper method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83745 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Transforms/Utils/SSAUpdater.h | 4 ++++ lib/Transforms/Utils/SSAUpdater.cpp | 6 ++++++ 2 files changed, 10 insertions(+) diff --git a/include/llvm/Transforms/Utils/SSAUpdater.h b/include/llvm/Transforms/Utils/SSAUpdater.h index c697d048f1f..11b90d42677 100644 --- a/include/llvm/Transforms/Utils/SSAUpdater.h +++ b/include/llvm/Transforms/Utils/SSAUpdater.h @@ -60,6 +60,10 @@ public: /// AddAvailableValue - Indicate that a rewritten value is available at the /// end of the specified block with the specified value. void AddAvailableValue(BasicBlock *BB, Value *V); + + /// HasValueForBlock - Return true if the SSAUpdater already has a value for + /// the specified block. + bool HasValueForBlock(BasicBlock *BB) const; /// GetValueAtEndOfBlock - Construct SSA form, materializing a value that is /// live at the end of the specified block. diff --git a/lib/Transforms/Utils/SSAUpdater.cpp b/lib/Transforms/Utils/SSAUpdater.cpp index 2fb742bb445..780ee263894 100644 --- a/lib/Transforms/Utils/SSAUpdater.cpp +++ b/lib/Transforms/Utils/SSAUpdater.cpp @@ -56,6 +56,12 @@ void SSAUpdater::Initialize(Value *ProtoValue) { PrototypeValue = ProtoValue; } +/// HasValueForBlock - Return true if the SSAUpdater already has a value for +/// the specified block. +bool SSAUpdater::HasValueForBlock(BasicBlock *BB) const { + return getAvailableVals(AV).count(BB); +} + /// AddAvailableValue - Indicate that a rewritten value is available in the /// specified block with the specified value. void SSAUpdater::AddAvailableValue(BasicBlock *BB, Value *V) { -- 2.34.1