6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-25 13:24:46 +00:00
Code Issues Projects Releases Wiki Activity

revert r160742: it's breaking CMake build

Browse Source 
original commit msg:
MemoryBuiltins: add support to determine the size of strdup'ed non-constant strings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160751 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nuno Lopes
2012-07-25 18:49:28 +00:00
parent d68e8cda24
commit 6e699bf38d
4 changed files with 9 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
lib/Analysis/MemoryBuiltins.cpp
View File

@@ -26,7 +26,6 @@
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Transforms/Utils/BuildLibCalls.h"
#include "llvm/Transforms/Utils/Local.h"
using namespace llvm;
@@ -449,9 +448,11 @@ SizeOffsetType ObjectSizeOffsetVisitor::visitCallSite(CallSite CS) {
return std::make_pair(Size, Zero);
// TODO: handle more standard functions (+ wchar cousins):
// - strdup / strndup
// - strcpy / strncpy
// - strcat / strncat
// - memcpy / memmove
// - strcat / strncat
// - memset
}
@@ -523,9 +524,8 @@ SizeOffsetType ObjectSizeOffsetVisitor::visitInstruction(Instruction &I) {
ObjectSizeOffsetEvaluator::ObjectSizeOffsetEvaluator(const TargetData *TD,
const TargetLibraryInfo *TLI,
LLVMContext &Context)
: TD(TD), TLI(TLI), Context(Context), Builder(Context, TargetFolder(TD)),
: TD(TD), Context(Context), Builder(Context, TargetFolder(TD)),
Visitor(TD, Context) {
IntTy = TD->getIntPtrType(Context);
Zero = ConstantInt::get(IntTy, 0);
@@ -619,21 +619,8 @@ SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitCallSite(CallSite CS) {
// handle strdup-like functions separately
if (FnData->AllocTy == StrDupLike) {
IRBuilder<> StdBuilder(Builder.GetInsertPoint());
Value *Size;
// strdup(str): size = strlen(str)+1
if (FnData->FstParam < 0)
Size = EmitStrLen(CS.getArgument(0), StdBuilder, TD, TLI);
else
// strndup(str, maxlen): size = strnlen(str, maxlen)+1
Size = EmitStrNLen(CS.getArgument(0), CS.getArgument(FnData->FstParam),
StdBuilder, TD, TLI);
if (!Size)
return unknown();
Builder.SetInsertPoint(StdBuilder.GetInsertPoint());
Size = Builder.CreateNUWAdd(Size, ConstantInt::get(IntTy, 1));
return std::make_pair(Size, Zero);
// TODO
return unknown();
}
Value *FirstArg = CS.getArgument(FnData->FstParam);
@@ -647,9 +634,11 @@ SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitCallSite(CallSite CS) {
return std::make_pair(Size, Zero);
// TODO: handle more standard functions (+ wchar cousins):
// - strdup / strndup
// - strcpy / strncpy
// - strcat / strncat
// - memcpy / memmove
// - strcat / strncat
// - memset
}