diff options
Diffstat (limited to 'src/llvmopencl/BreakConstantGEPs.h')
-rw-r--r-- | src/llvmopencl/BreakConstantGEPs.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/llvmopencl/BreakConstantGEPs.h b/src/llvmopencl/BreakConstantGEPs.h new file mode 100644 index 0000000..4cd86b2 --- /dev/null +++ b/src/llvmopencl/BreakConstantGEPs.h @@ -0,0 +1,57 @@ +//===- BreakConstantGEPs.h - Change constant GEPs into GEP instructions --- --// +// +// pocl note: This pass is taken from The SAFECode project with trivial modifications. +// Automatic locals might cause constant GEPs which cause problems during +// converting the locals to kernel function arguments for thread safety. +// +// The SAFECode Compiler +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This pass changes all GEP constant expressions into GEP instructions. This +// permits the rest of SAFECode to put run-time checks on them if necessary. +// +//===----------------------------------------------------------------------===// + +#ifndef BREAKCONSTANTGEPS_H +#define BREAKCONSTANTGEPS_H + +#include "config.h" +#if (defined LLVM_3_1 or defined LLVM_3_2) +#include "llvm/Module.h" +#else +#include "llvm/IR/Module.h" +#endif +#include "llvm/Analysis/Dominators.h" +#include "llvm/Pass.h" + +using namespace llvm; + +// +// Pass: BreakConstantGEPs +// +// Description: +// This pass modifies a function so that it uses GEP instructions instead of +// GEP constant expressions. +// +struct BreakConstantGEPs : public FunctionPass { + private: + // Private methods + + // Private variables + + public: + static char ID; + BreakConstantGEPs() : FunctionPass(ID) {} + const char *getPassName() const {return "Remove Constant GEP Expressions";} + virtual bool runOnFunction (Function & F); + virtual void getAnalysisUsage(AnalysisUsage &AU) const { + // This pass does not modify the control-flow graph of the function + AU.setPreservesCFG(); + } +}; + +#endif |