From b9df9b4c889ec2512519ae27f0972bd228f42e01 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 22 Nov 2004 17:23:57 +0000 Subject: [PATCH] Do not count debugger intrinsics in size estimation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18110 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/TailDuplication.cpp | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/lib/Transforms/Scalar/TailDuplication.cpp b/lib/Transforms/Scalar/TailDuplication.cpp index 545068b6dfb..0a05d0f9e72 100644 --- a/lib/Transforms/Scalar/TailDuplication.cpp +++ b/lib/Transforms/Scalar/TailDuplication.cpp @@ -22,6 +22,7 @@ #include "llvm/Constant.h" #include "llvm/Function.h" #include "llvm/Instructions.h" +#include "llvm/IntrinsicInst.h" #include "llvm/Pass.h" #include "llvm/Type.h" #include "llvm/Support/CFG.h" @@ -107,8 +108,11 @@ bool TailDup::shouldEliminateUnconditionalBranch(TerminatorInst *TI) { BasicBlock::iterator I = Dest->begin(); while (isa(*I)) ++I; - for (unsigned Size = 0; I != Dest->end(); ++Size, ++I) - if (Size == Threshold) return false; // The block is too large... + for (unsigned Size = 0; I != Dest->end(); ++I) { + if (Size == Threshold) return false; // The block is too large. + // Only count instructions that are not debugger intrinsics. + if (!isa(I)) ++Size; + } // Do not tail duplicate a block that has thousands of successors into a block // with a single successor if the block has many other predecessors. This can