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remove the last vestiges of llvm::GetConstantStringInfo, in CodeGen.

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llvm-svn: 149356
This commit is contained in:
Chris Lattner 2012-01-31 05:09:17 +00:00
parent 3ca194bce8
commit 7903530b71
3 changed files with 6 additions and 19 deletions
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4
include/llvm/Analysis/ValueTracking.h
View File

@ -132,8 +132,8 @@ namespace llvm {
uint64_t Offset = 0);
// FIXME: Remove this.
bool GetConstantStringInfo(const Value *V, std::string &Str,
uint64_t Offset = 0);
// bool GetConstantStringInfo(const Value *V, std::string &Str,
// uint64_t Offset = 0);
/// GetStringLength - If we can compute the length of the string pointed to by
/// the specified pointer, return 'len+1'. If we can't, return 0.

10
lib/Analysis/ValueTracking.cpp
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@ -1603,16 +1603,6 @@ Value *llvm::GetPointerBaseWithConstantOffset(Value *Ptr, int64_t &Offset,
}
// FIXME: Remove this.
bool llvm::GetConstantStringInfo(const Value *V, std::string &Str,
uint64_t Offset) {
StringRef Tmp;
if (!getConstantStringInfo(V, Tmp, Offset))
return false;
Str = Tmp.str();
return true;
}
/// getConstantStringInfo - This function computes the length of a
/// null-terminated C string pointed to by V. If successful, it returns true
/// and returns the string in Str. If unsuccessful, it returns false.

11
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -3299,7 +3299,7 @@ static SDValue getMemsetValue(SDValue Value, EVT VT, SelectionDAG &DAG,
/// string ptr.
static SDValue getMemsetStringVal(EVT VT, DebugLoc dl, SelectionDAG &DAG,
const TargetLowering &TLI,
std::string &Str, unsigned Offset) {
StringRef Str, unsigned Offset) {
// Handle vector with all elements zero.
if (Str.empty()) {
if (VT.isInteger())
@ -3343,7 +3343,7 @@ static SDValue getMemBasePlusOffset(SDValue Base, unsigned Offset,
/// isMemSrcFromString - Returns true if memcpy source is a string constant.
///
static bool isMemSrcFromString(SDValue Src, std::string &Str) {
static bool isMemSrcFromString(SDValue Src, StringRef &Str) {
unsigned SrcDelta = 0;
GlobalAddressSDNode *G = NULL;
if (Src.getOpcode() == ISD::GlobalAddress)
@ -3358,11 +3358,8 @@ static bool isMemSrcFromString(SDValue Src, std::string &Str) {
return false;
if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(G->getGlobal()))
if (GetConstantStringInfo(GV, Str, SrcDelta)) {
// The nul can also be read.
Str.push_back(0);
if (getConstantStringInfo(GV, Str, SrcDelta))
return true;
}
return false;
}
@ -3467,7 +3464,7 @@ static SDValue getMemcpyLoadsAndStores(SelectionDAG &DAG, DebugLoc dl,
unsigned SrcAlign = DAG.InferPtrAlignment(Src);
if (Align > SrcAlign)
SrcAlign = Align;
std::string Str;
StringRef Str;
bool CopyFromStr = isMemSrcFromString(Src, Str);
bool isZeroStr = CopyFromStr && Str.empty();
unsigned Limit = AlwaysInline ? ~0U : TLI.getMaxStoresPerMemcpy(OptSize);