From 9e2446b38c94db61b2416c28fee415c03663c11c Mon Sep 17 00:00:00 2001
From: rdivacky <rdivacky@FreeBSD.org>
Date: Wed, 10 Mar 2010 17:45:15 +0000
Subject: Update LLVM to r98164.
---
lib/Transforms/Scalar/SimplifyLibCalls.cpp | 134 -----------------------------
1 file changed, 134 deletions(-)
(limited to 'lib/Transforms/Scalar/SimplifyLibCalls.cpp')
diff --git a/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
index 86ddeac..05027ae 100644
--- a/lib/Transforms/Scalar/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
@@ -633,130 +633,6 @@ struct MemSetOpt : public LibCallOptimization {
};
//===----------------------------------------------------------------------===//
-// Object Size Checking Optimizations
-//===----------------------------------------------------------------------===//
-
-//===---------------------------------------===//
-// 'memcpy_chk' Optimizations
-
-struct MemCpyChkOpt : public LibCallOptimization {
- virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
- // These optimizations require TargetData.
- if (!TD) return 0;
-
- const FunctionType *FT = Callee->getFunctionType();
- if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) ||
- !FT->getParamType(0)->isPointerTy() ||
- !FT->getParamType(1)->isPointerTy() ||
- !FT->getParamType(3)->isIntegerTy() ||
- FT->getParamType(2) != TD->getIntPtrType(*Context))
- return 0;
-
- ConstantInt *ObjSizeCI = dyn_cast<ConstantInt>(CI->getOperand(4));
- if (!ObjSizeCI)
- return 0;
- ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
- if (ObjSizeCI->isAllOnesValue() ||
- (SizeCI && ObjSizeCI->getValue().uge(SizeCI->getValue()))) {
- EmitMemCpy(CI->getOperand(1), CI->getOperand(2),
- CI->getOperand(3), 1, B, TD);
- return CI->getOperand(1);
- }
-
- return 0;
- }
-};
-
-//===---------------------------------------===//
-// 'memset_chk' Optimizations
-
-struct MemSetChkOpt : public LibCallOptimization {
- virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
- // These optimizations require TargetData.
- if (!TD) return 0;
-
- const FunctionType *FT = Callee->getFunctionType();
- if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) ||
- !FT->getParamType(0)->isPointerTy() ||
- !FT->getParamType(1)->isIntegerTy() ||
- !FT->getParamType(3)->isIntegerTy() ||
- FT->getParamType(2) != TD->getIntPtrType(*Context))
- return 0;
-
- ConstantInt *ObjSizeCI = dyn_cast<ConstantInt>(CI->getOperand(4));
- if (!ObjSizeCI)
- return 0;
- ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
- if (ObjSizeCI->isAllOnesValue() ||
- (SizeCI && ObjSizeCI->getValue().uge(SizeCI->getValue()))) {
- Value *Val = B.CreateIntCast(CI->getOperand(2), Type::getInt8Ty(*Context),
- false);
- EmitMemSet(CI->getOperand(1), Val, CI->getOperand(3), B, TD);
- return CI->getOperand(1);
- }
-
- return 0;
- }
-};
-
-//===---------------------------------------===//
-// 'memmove_chk' Optimizations
-
-struct MemMoveChkOpt : public LibCallOptimization {
- virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
- // These optimizations require TargetData.
- if (!TD) return 0;
-
- const FunctionType *FT = Callee->getFunctionType();
- if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) ||
- !FT->getParamType(0)->isPointerTy() ||
- !FT->getParamType(1)->isPointerTy() ||
- !FT->getParamType(3)->isIntegerTy() ||
- FT->getParamType(2) != TD->getIntPtrType(*Context))
- return 0;
-
- ConstantInt *ObjSizeCI = dyn_cast<ConstantInt>(CI->getOperand(4));
- if (!ObjSizeCI)
- return 0;
- ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
- if (ObjSizeCI->isAllOnesValue() ||
- (SizeCI && ObjSizeCI->getValue().uge(SizeCI->getValue()))) {
- EmitMemMove(CI->getOperand(1), CI->getOperand(2), CI->getOperand(3),
- 1, B, TD);
- return CI->getOperand(1);
- }
-
- return 0;
- }
-};
-
-struct StrCpyChkOpt : public LibCallOptimization {
- virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
- const FunctionType *FT = Callee->getFunctionType();
- if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
- !FT->getParamType(0)->isPointerTy() ||
- !FT->getParamType(1)->isPointerTy())
- return 0;
-
- ConstantInt *ObjSizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
- if (!ObjSizeCI)
- return 0;
-
- // If a) we don't have any length information, or b) we know this will
- // fit then just lower to a plain strcpy. Otherwise we'll keep our
- // strcpy_chk call which may fail at runtime if the size is too long.
- // TODO: It might be nice to get a maximum length out of the possible
- // string lengths for varying.
- if (ObjSizeCI->isAllOnesValue() ||
- ObjSizeCI->getZExtValue() >= GetStringLength(CI->getOperand(2)))
- return EmitStrCpy(CI->getOperand(1), CI->getOperand(2), B, TD);
-
- return 0;
- }
-};
-
-
-//===----------------------------------------------------------------------===//
// Math Library Optimizations
//===----------------------------------------------------------------------===//
@@ -1298,10 +1174,6 @@ namespace {
SPrintFOpt SPrintF; PrintFOpt PrintF;
FWriteOpt FWrite; FPutsOpt FPuts; FPrintFOpt FPrintF;
- // Object Size Checking
- MemCpyChkOpt MemCpyChk; MemSetChkOpt MemSetChk; MemMoveChkOpt MemMoveChk;
- StrCpyChkOpt StrCpyChk;
-
bool Modified; // This is only used by doInitialization.
public:
static char ID; // Pass identification
@@ -1407,12 +1279,6 @@ void SimplifyLibCalls::InitOptimizations() {
Optimizations["fwrite"] = &FWrite;
Optimizations["fputs"] = &FPuts;
Optimizations["fprintf"] = &FPrintF;
-
- // Object Size Checking
- Optimizations["__memcpy_chk"] = &MemCpyChk;
- Optimizations["__memset_chk"] = &MemSetChk;
- Optimizations["__memmove_chk"] = &MemMoveChk;
- Optimizations["__strcpy_chk"] = &StrCpyChk;
}
--
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