diff --git a/llvm/include/llvm/Analysis/TargetLibraryInfo.def b/llvm/include/llvm/Analysis/TargetLibraryInfo.def
--- a/llvm/include/llvm/Analysis/TargetLibraryInfo.def
+++ b/llvm/include/llvm/Analysis/TargetLibraryInfo.def
@@ -715,18 +715,12 @@
/// int fgetc(FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fgetc)
TLI_DEFINE_STRING_INTERNAL("fgetc")
-/// int fgetc_unlocked(FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(fgetc_unlocked)
-TLI_DEFINE_STRING_INTERNAL("fgetc_unlocked")
/// int fgetpos(FILE *stream, fpos_t *pos);
TLI_DEFINE_ENUM_INTERNAL(fgetpos)
TLI_DEFINE_STRING_INTERNAL("fgetpos")
/// char *fgets(char *s, int n, FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fgets)
TLI_DEFINE_STRING_INTERNAL("fgets")
-/// char *fgets_unlocked(char *s, int n, FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(fgets_unlocked)
-TLI_DEFINE_STRING_INTERNAL("fgets_unlocked")
/// int fileno(FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fileno)
TLI_DEFINE_STRING_INTERNAL("fileno")
@@ -796,21 +790,12 @@
/// int fputc(int c, FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fputc)
TLI_DEFINE_STRING_INTERNAL("fputc")
-/// int fputc_unlocked(int c, FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(fputc_unlocked)
-TLI_DEFINE_STRING_INTERNAL("fputc_unlocked")
/// int fputs(const char *s, FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fputs)
TLI_DEFINE_STRING_INTERNAL("fputs")
-/// int fputs_unlocked(const char *s, FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(fputs_unlocked)
-TLI_DEFINE_STRING_INTERNAL("fputs_unlocked")
/// size_t fread(void *ptr, size_t size, size_t nitems, FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fread)
TLI_DEFINE_STRING_INTERNAL("fread")
-/// size_t fread_unlocked(void *ptr, size_t size, size_t nitems, FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(fread_unlocked)
-TLI_DEFINE_STRING_INTERNAL("fread_unlocked")
/// void free(void *ptr);
TLI_DEFINE_ENUM_INTERNAL(free)
TLI_DEFINE_STRING_INTERNAL("free")
@@ -868,21 +853,12 @@
/// size_t fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(fwrite)
TLI_DEFINE_STRING_INTERNAL("fwrite")
-/// size_t fwrite_unlocked(const void *ptr, size_t size, size_t nitems, FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(fwrite_unlocked)
-TLI_DEFINE_STRING_INTERNAL("fwrite_unlocked")
/// int getc(FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(getc)
TLI_DEFINE_STRING_INTERNAL("getc")
-/// int getc_unlocked(FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(getc_unlocked)
-TLI_DEFINE_STRING_INTERNAL("getc_unlocked")
/// int getchar(void);
TLI_DEFINE_ENUM_INTERNAL(getchar)
TLI_DEFINE_STRING_INTERNAL("getchar")
-/// int getchar_unlocked(void);
-TLI_DEFINE_ENUM_INTERNAL(getchar_unlocked)
-TLI_DEFINE_STRING_INTERNAL("getchar_unlocked")
/// char *getenv(const char *name);
TLI_DEFINE_ENUM_INTERNAL(getenv)
TLI_DEFINE_STRING_INTERNAL("getenv")
@@ -1088,15 +1064,9 @@
/// int putc(int c, FILE *stream);
TLI_DEFINE_ENUM_INTERNAL(putc)
TLI_DEFINE_STRING_INTERNAL("putc")
-/// int putc_unlocked(int c, FILE *stream);
-TLI_DEFINE_ENUM_INTERNAL(putc_unlocked)
-TLI_DEFINE_STRING_INTERNAL("putc_unlocked")
/// int putchar(int c);
TLI_DEFINE_ENUM_INTERNAL(putchar)
TLI_DEFINE_STRING_INTERNAL("putchar")
-/// int putchar_unlocked(int c);
-TLI_DEFINE_ENUM_INTERNAL(putchar_unlocked)
-TLI_DEFINE_STRING_INTERNAL("putchar_unlocked")
/// int puts(const char *s);
TLI_DEFINE_ENUM_INTERNAL(puts)
TLI_DEFINE_STRING_INTERNAL("puts")
diff --git a/llvm/include/llvm/Transforms/Utils/BuildLibCalls.h b/llvm/include/llvm/Transforms/Utils/BuildLibCalls.h
--- a/llvm/include/llvm/Transforms/Utils/BuildLibCalls.h
+++ b/llvm/include/llvm/Transforms/Utils/BuildLibCalls.h
@@ -187,21 +187,11 @@
Value *emitFPutC(Value *Char, Value *File, IRBuilderBase &B,
const TargetLibraryInfo *TLI);
- /// Emit a call to the fputc_unlocked function. This assumes that Char is an
- /// i32, and File is a pointer to FILE.
- Value *emitFPutCUnlocked(Value *Char, Value *File, IRBuilderBase &B,
- const TargetLibraryInfo *TLI);
-
/// Emit a call to the fputs function. Str is required to be a pointer and
/// File is a pointer to FILE.
Value *emitFPutS(Value *Str, Value *File, IRBuilderBase &B,
const TargetLibraryInfo *TLI);
- /// Emit a call to the fputs_unlocked function. Str is required to be a
- /// pointer and File is a pointer to FILE.
- Value *emitFPutSUnlocked(Value *Str, Value *File, IRBuilderBase &B,
- const TargetLibraryInfo *TLI);
-
/// Emit a call to the fwrite function. This assumes that Ptr is a pointer,
/// Size is an 'intptr_t', and File is a pointer to FILE.
Value *emitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilderBase &B,
@@ -214,27 +204,6 @@
/// Emit a call to the calloc function.
Value *emitCalloc(Value *Num, Value *Size, const AttributeList &Attrs,
IRBuilderBase &B, const TargetLibraryInfo &TLI);
-
- /// Emit a call to the fwrite_unlocked function. This assumes that Ptr is a
- /// pointer, Size is an 'intptr_t', N is nmemb and File is a pointer to FILE.
- Value *emitFWriteUnlocked(Value *Ptr, Value *Size, Value *N, Value *File,
- IRBuilderBase &B, const DataLayout &DL,
- const TargetLibraryInfo *TLI);
-
- /// Emit a call to the fgetc_unlocked function. File is a pointer to FILE.
- Value *emitFGetCUnlocked(Value *File, IRBuilderBase &B,
- const TargetLibraryInfo *TLI);
-
- /// Emit a call to the fgets_unlocked function. Str is required to be a
- /// pointer, Size is an i32 and File is a pointer to FILE.
- Value *emitFGetSUnlocked(Value *Str, Value *Size, Value *File,
- IRBuilderBase &B, const TargetLibraryInfo *TLI);
-
- /// Emit a call to the fread_unlocked function. This assumes that Ptr is a
- /// pointer, Size is an 'intptr_t', N is nmemb and File is a pointer to FILE.
- Value *emitFReadUnlocked(Value *Ptr, Value *Size, Value *N, Value *File,
- IRBuilderBase &B, const DataLayout &DL,
- const TargetLibraryInfo *TLI);
}
#endif
diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -75,18 +75,6 @@
}) &&
"TargetLibraryInfoImpl function names must be sorted");
- // Set IO unlocked variants as unavailable
- // Set them as available per system below
- TLI.setUnavailable(LibFunc_getchar_unlocked);
- TLI.setUnavailable(LibFunc_putc_unlocked);
- TLI.setUnavailable(LibFunc_putchar_unlocked);
- TLI.setUnavailable(LibFunc_fputc_unlocked);
- TLI.setUnavailable(LibFunc_fgetc_unlocked);
- TLI.setUnavailable(LibFunc_fread_unlocked);
- TLI.setUnavailable(LibFunc_fwrite_unlocked);
- TLI.setUnavailable(LibFunc_fputs_unlocked);
- TLI.setUnavailable(LibFunc_fgets_unlocked);
-
bool ShouldExtI32Param = false, ShouldExtI32Return = false,
ShouldSignExtI32Param = false;
// PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
@@ -122,12 +110,6 @@
// memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
// All versions of watchOS support it.
if (T.isMacOSX()) {
- // available IO unlocked variants on Mac OS X
- TLI.setAvailable(LibFunc_getc_unlocked);
- TLI.setAvailable(LibFunc_getchar_unlocked);
- TLI.setAvailable(LibFunc_putc_unlocked);
- TLI.setAvailable(LibFunc_putchar_unlocked);
-
if (T.isMacOSXVersionLT(10, 5))
TLI.setUnavailable(LibFunc_memset_pattern16);
} else if (T.isiOS()) {
@@ -519,21 +501,6 @@
TLI.setUnavailable(LibFunc_sinhl_finite);
}
- if ((T.isOSLinux() && T.isGNUEnvironment()) ||
- (T.isAndroid() && !T.isAndroidVersionLT(28))) {
- // available IO unlocked variants on GNU/Linux and Android P or later
- TLI.setAvailable(LibFunc_getc_unlocked);
- TLI.setAvailable(LibFunc_getchar_unlocked);
- TLI.setAvailable(LibFunc_putc_unlocked);
- TLI.setAvailable(LibFunc_putchar_unlocked);
- TLI.setAvailable(LibFunc_fputc_unlocked);
- TLI.setAvailable(LibFunc_fgetc_unlocked);
- TLI.setAvailable(LibFunc_fread_unlocked);
- TLI.setAvailable(LibFunc_fwrite_unlocked);
- TLI.setAvailable(LibFunc_fputs_unlocked);
- TLI.setAvailable(LibFunc_fgets_unlocked);
- }
-
// As currently implemented in clang, NVPTX code has no standard library to
// speak of. Headers provide a standard-ish library implementation, but many
// of the signatures are wrong -- for example, many libm functions are not
@@ -941,7 +908,6 @@
case LibFunc_feof:
case LibFunc_fflush:
case LibFunc_fgetc:
- case LibFunc_fgetc_unlocked:
case LibFunc_fileno:
case LibFunc_flockfile:
case LibFunc_free:
@@ -955,7 +921,6 @@
case LibFunc_ftrylockfile:
case LibFunc_funlockfile:
case LibFunc_getc:
- case LibFunc_getc_unlocked:
case LibFunc_getlogin_r:
case LibFunc_mkdir:
case LibFunc_mktime:
@@ -972,7 +937,6 @@
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fputc:
- case LibFunc_fputc_unlocked:
case LibFunc_fstat:
case LibFunc_frexp:
case LibFunc_frexpf:
@@ -980,22 +944,18 @@
case LibFunc_fstatvfs:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_fgets:
- case LibFunc_fgets_unlocked:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_fread:
- case LibFunc_fread_unlocked:
return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(3)->isPointerTy());
case LibFunc_fwrite:
- case LibFunc_fwrite_unlocked:
return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy() &&
FTy.getParamType(2)->isIntegerTy() &&
FTy.getParamType(3)->isPointerTy());
case LibFunc_fputs:
- case LibFunc_fputs_unlocked:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fscanf:
@@ -1009,7 +969,6 @@
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_getchar:
- case LibFunc_getchar_unlocked:
return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
case LibFunc_gets:
return (NumParams == 1 && FTy.getParamType(0) == PCharTy);
@@ -1022,7 +981,6 @@
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_putc:
- case LibFunc_putc_unlocked:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_pread:
case LibFunc_pwrite:
@@ -1420,7 +1378,6 @@
case LibFunc_isascii:
case LibFunc_toascii:
case LibFunc_putchar:
- case LibFunc_putchar_unlocked:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getReturnType() == FTy.getParamType(0));
diff --git a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
--- a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -442,7 +442,6 @@
case LibFunc_fseek:
case LibFunc_ftell:
case LibFunc_fgetc:
- case LibFunc_fgetc_unlocked:
case LibFunc_fseeko:
case LibFunc_ftello:
case LibFunc_fileno:
@@ -461,7 +460,6 @@
Changed |= setOnlyReadsMemory(F);
return Changed;
case LibFunc_fputc:
- case LibFunc_fputc_unlocked:
case LibFunc_fstat:
case LibFunc_frexp:
case LibFunc_frexpf:
@@ -471,25 +469,21 @@
Changed |= setDoesNotCapture(F, 1);
return Changed;
case LibFunc_fgets:
- case LibFunc_fgets_unlocked:
Changed |= setDoesNotThrow(F);
Changed |= setDoesNotCapture(F, 2);
return Changed;
case LibFunc_fread:
- case LibFunc_fread_unlocked:
Changed |= setDoesNotThrow(F);
Changed |= setDoesNotCapture(F, 0);
Changed |= setDoesNotCapture(F, 3);
return Changed;
case LibFunc_fwrite:
- case LibFunc_fwrite_unlocked:
Changed |= setDoesNotThrow(F);
Changed |= setDoesNotCapture(F, 0);
Changed |= setDoesNotCapture(F, 3);
// FIXME: readonly #1?
return Changed;
case LibFunc_fputs:
- case LibFunc_fputs_unlocked:
Changed |= setDoesNotThrow(F);
Changed |= setDoesNotCapture(F, 0);
Changed |= setDoesNotCapture(F, 1);
@@ -509,7 +503,6 @@
return Changed;
case LibFunc_getc:
case LibFunc_getlogin_r:
- case LibFunc_getc_unlocked:
Changed |= setDoesNotThrow(F);
Changed |= setDoesNotCapture(F, 0);
return Changed;
@@ -520,7 +513,6 @@
return Changed;
case LibFunc_gets:
case LibFunc_getchar:
- case LibFunc_getchar_unlocked:
Changed |= setDoesNotThrow(F);
return Changed;
case LibFunc_getitimer:
@@ -559,7 +551,6 @@
Changed |= setOnlyReadsMemory(F, 1);
return Changed;
case LibFunc_putc:
- case LibFunc_putc_unlocked:
Changed |= setDoesNotThrow(F);
Changed |= setDoesNotCapture(F, 1);
return Changed;
@@ -580,7 +571,6 @@
Changed |= setOnlyReadsMemory(F, 1);
return Changed;
case LibFunc_putchar:
- case LibFunc_putchar_unlocked:
Changed |= setDoesNotThrow(F);
return Changed;
case LibFunc_popen:
@@ -1188,26 +1178,6 @@
return CI;
}
-Value *llvm::emitFPutCUnlocked(Value *Char, Value *File, IRBuilderBase &B,
- const TargetLibraryInfo *TLI) {
- if (!TLI->has(LibFunc_fputc_unlocked))
- return nullptr;
-
- Module *M = B.GetInsertBlock()->getModule();
- StringRef FPutcUnlockedName = TLI->getName(LibFunc_fputc_unlocked);
- FunctionCallee F = M->getOrInsertFunction(FPutcUnlockedName, B.getInt32Ty(),
- B.getInt32Ty(), File->getType());
- if (File->getType()->isPointerTy())
- inferLibFuncAttributes(M, FPutcUnlockedName, *TLI);
- Char = B.CreateIntCast(Char, B.getInt32Ty(), /*isSigned*/ true, "chari");
- CallInst *CI = B.CreateCall(F, {Char, File}, FPutcUnlockedName);
-
- if (const Function *Fn =
- dyn_cast<Function>(F.getCallee()->stripPointerCasts()))
- CI->setCallingConv(Fn->getCallingConv());
- return CI;
-}
-
Value *llvm::emitFPutS(Value *Str, Value *File, IRBuilderBase &B,
const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc_fputs))
@@ -1227,25 +1197,6 @@
return CI;
}
-Value *llvm::emitFPutSUnlocked(Value *Str, Value *File, IRBuilderBase &B,
- const TargetLibraryInfo *TLI) {
- if (!TLI->has(LibFunc_fputs_unlocked))
- return nullptr;
-
- Module *M = B.GetInsertBlock()->getModule();
- StringRef FPutsUnlockedName = TLI->getName(LibFunc_fputs_unlocked);
- FunctionCallee F = M->getOrInsertFunction(FPutsUnlockedName, B.getInt32Ty(),
- B.getInt8PtrTy(), File->getType());
- if (File->getType()->isPointerTy())
- inferLibFuncAttributes(M, FPutsUnlockedName, *TLI);
- CallInst *CI = B.CreateCall(F, {castToCStr(Str, B), File}, FPutsUnlockedName);
-
- if (const Function *Fn =
- dyn_cast<Function>(F.getCallee()->stripPointerCasts()))
- CI->setCallingConv(Fn->getCallingConv());
- return CI;
-}
-
Value *llvm::emitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilderBase &B,
const DataLayout &DL, const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc_fwrite))
@@ -1310,88 +1261,3 @@
return CI;
}
-
-Value *llvm::emitFWriteUnlocked(Value *Ptr, Value *Size, Value *N, Value *File,
- IRBuilderBase &B, const DataLayout &DL,
- const TargetLibraryInfo *TLI) {
- if (!TLI->has(LibFunc_fwrite_unlocked))
- return nullptr;
-
- Module *M = B.GetInsertBlock()->getModule();
- LLVMContext &Context = B.GetInsertBlock()->getContext();
- StringRef FWriteUnlockedName = TLI->getName(LibFunc_fwrite_unlocked);
- FunctionCallee F = M->getOrInsertFunction(
- FWriteUnlockedName, DL.getIntPtrType(Context), B.getInt8PtrTy(),
- DL.getIntPtrType(Context), DL.getIntPtrType(Context), File->getType());
-
- if (File->getType()->isPointerTy())
- inferLibFuncAttributes(M, FWriteUnlockedName, *TLI);
- CallInst *CI = B.CreateCall(F, {castToCStr(Ptr, B), Size, N, File});
-
- if (const Function *Fn =
- dyn_cast<Function>(F.getCallee()->stripPointerCasts()))
- CI->setCallingConv(Fn->getCallingConv());
- return CI;
-}
-
-Value *llvm::emitFGetCUnlocked(Value *File, IRBuilderBase &B,
- const TargetLibraryInfo *TLI) {
- if (!TLI->has(LibFunc_fgetc_unlocked))
- return nullptr;
-
- Module *M = B.GetInsertBlock()->getModule();
- StringRef FGetCUnlockedName = TLI->getName(LibFunc_fgetc_unlocked);
- FunctionCallee F = M->getOrInsertFunction(FGetCUnlockedName, B.getInt32Ty(),
- File->getType());
- if (File->getType()->isPointerTy())
- inferLibFuncAttributes(M, FGetCUnlockedName, *TLI);
- CallInst *CI = B.CreateCall(F, File, FGetCUnlockedName);
-
- if (const Function *Fn =
- dyn_cast<Function>(F.getCallee()->stripPointerCasts()))
- CI->setCallingConv(Fn->getCallingConv());
- return CI;
-}
-
-Value *llvm::emitFGetSUnlocked(Value *Str, Value *Size, Value *File,
- IRBuilderBase &B, const TargetLibraryInfo *TLI) {
- if (!TLI->has(LibFunc_fgets_unlocked))
- return nullptr;
-
- Module *M = B.GetInsertBlock()->getModule();
- StringRef FGetSUnlockedName = TLI->getName(LibFunc_fgets_unlocked);
- FunctionCallee F =
- M->getOrInsertFunction(FGetSUnlockedName, B.getInt8PtrTy(),
- B.getInt8PtrTy(), B.getInt32Ty(), File->getType());
- inferLibFuncAttributes(M, FGetSUnlockedName, *TLI);
- CallInst *CI =
- B.CreateCall(F, {castToCStr(Str, B), Size, File}, FGetSUnlockedName);
-
- if (const Function *Fn =
- dyn_cast<Function>(F.getCallee()->stripPointerCasts()))
- CI->setCallingConv(Fn->getCallingConv());
- return CI;
-}
-
-Value *llvm::emitFReadUnlocked(Value *Ptr, Value *Size, Value *N, Value *File,
- IRBuilderBase &B, const DataLayout &DL,
- const TargetLibraryInfo *TLI) {
- if (!TLI->has(LibFunc_fread_unlocked))
- return nullptr;
-
- Module *M = B.GetInsertBlock()->getModule();
- LLVMContext &Context = B.GetInsertBlock()->getContext();
- StringRef FReadUnlockedName = TLI->getName(LibFunc_fread_unlocked);
- FunctionCallee F = M->getOrInsertFunction(
- FReadUnlockedName, DL.getIntPtrType(Context), B.getInt8PtrTy(),
- DL.getIntPtrType(Context), DL.getIntPtrType(Context), File->getType());
-
- if (File->getType()->isPointerTy())
- inferLibFuncAttributes(M, FReadUnlockedName, *TLI);
- CallInst *CI = B.CreateCall(F, {castToCStr(Ptr, B), Size, N, File});
-
- if (const Function *Fn =
- dyn_cast<Function>(F.getCallee()->stripPointerCasts()))
- CI->setCallingConv(Fn->getCallingConv());
- return CI;
-}
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
--- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -138,28 +138,6 @@
return ConstantInt::get(CI->getType(), Result);
}
-static bool isLocallyOpenedFile(Value *File, CallInst *CI,
- const TargetLibraryInfo *TLI) {
- CallInst *FOpen = dyn_cast<CallInst>(File);
- if (!FOpen)
- return false;
-
- Function *InnerCallee = FOpen->getCalledFunction();
- if (!InnerCallee)
- return false;
-
- LibFunc Func;
- if (!TLI->getLibFunc(*InnerCallee, Func) || !TLI->has(Func) ||
- Func != LibFunc_fopen)
- return false;
-
- inferLibFuncAttributes(*CI->getCalledFunction(), *TLI);
- if (PointerMayBeCaptured(File, true, true))
- return false;
-
- return true;
-}
-
static bool isOnlyUsedInComparisonWithZero(Value *V) {
for (User *U : V->users()) {
if (ICmpInst *IC = dyn_cast<ICmpInst>(U))
@@ -2754,11 +2732,6 @@
}
}
- if (isLocallyOpenedFile(CI->getArgOperand(3), CI, TLI))
- return emitFWriteUnlocked(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), CI->getArgOperand(3), B, DL,
- TLI);
-
return nullptr;
}
@@ -2773,15 +2746,9 @@
if (OptForSize)
return nullptr;
- // Check if has any use
- if (!CI->use_empty()) {
- if (isLocallyOpenedFile(CI->getArgOperand(1), CI, TLI))
- return emitFPutSUnlocked(CI->getArgOperand(0), CI->getArgOperand(1), B,
- TLI);
- else
- // We can't optimize if return value is used.
- return nullptr;
- }
+ // We can't optimize if return value is used.
+ if (!CI->use_empty())
+ return nullptr;
// fputs(s,F) --> fwrite(s,strlen(s),1,F)
uint64_t Len = GetStringLength(CI->getArgOperand(0));
@@ -2795,40 +2762,6 @@
CI->getArgOperand(1), B, DL, TLI);
}
-Value *LibCallSimplifier::optimizeFPutc(CallInst *CI, IRBuilderBase &B) {
- optimizeErrorReporting(CI, B, 1);
-
- if (isLocallyOpenedFile(CI->getArgOperand(1), CI, TLI))
- return emitFPutCUnlocked(CI->getArgOperand(0), CI->getArgOperand(1), B,
- TLI);
-
- return nullptr;
-}
-
-Value *LibCallSimplifier::optimizeFGetc(CallInst *CI, IRBuilderBase &B) {
- if (isLocallyOpenedFile(CI->getArgOperand(0), CI, TLI))
- return emitFGetCUnlocked(CI->getArgOperand(0), B, TLI);
-
- return nullptr;
-}
-
-Value *LibCallSimplifier::optimizeFGets(CallInst *CI, IRBuilderBase &B) {
- if (isLocallyOpenedFile(CI->getArgOperand(2), CI, TLI))
- return emitFGetSUnlocked(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), B, TLI);
-
- return nullptr;
-}
-
-Value *LibCallSimplifier::optimizeFRead(CallInst *CI, IRBuilderBase &B) {
- if (isLocallyOpenedFile(CI->getArgOperand(3), CI, TLI))
- return emitFReadUnlocked(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), CI->getArgOperand(3), B, DL,
- TLI);
-
- return nullptr;
-}
-
Value *LibCallSimplifier::optimizePuts(CallInst *CI, IRBuilderBase &B) {
annotateNonNullBasedOnAccess(CI, 0);
if (!CI->use_empty())
@@ -3162,16 +3095,8 @@
return optimizeFPrintF(CI, Builder);
case LibFunc_fwrite:
return optimizeFWrite(CI, Builder);
- case LibFunc_fread:
- return optimizeFRead(CI, Builder);
case LibFunc_fputs:
return optimizeFPuts(CI, Builder);
- case LibFunc_fgets:
- return optimizeFGets(CI, Builder);
- case LibFunc_fputc:
- return optimizeFPutc(CI, Builder);
- case LibFunc_fgetc:
- return optimizeFGetc(CI, Builder);
case LibFunc_puts:
return optimizePuts(CI, Builder);
case LibFunc_perror:
diff --git a/llvm/test/Transforms/InferFunctionAttrs/annotate.ll b/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
--- a/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
+++ b/llvm/test/Transforms/InferFunctionAttrs/annotate.ll
@@ -511,13 +511,13 @@
; CHECK: declare i32 @getc(%opaque* nocapture) [[G1]]
declare i32 @getc(%opaque*)
-; CHECK: declare i32 @getc_unlocked(%opaque* nocapture) [[G1]]
+; CHECK: declare i32 @getc_unlocked(%opaque*){{$}}
declare i32 @getc_unlocked(%opaque*)
; CHECK: declare i32 @getchar() [[G1]]
declare i32 @getchar()
-; CHECK: declare i32 @getchar_unlocked() [[G1]]
+; CHECK: declare i32 @getchar_unlocked(){{$}}
declare i32 @getchar_unlocked()
; CHECK: declare i8* @getenv(i8* nocapture) [[G2]]
@@ -706,7 +706,7 @@
; CHECK: declare i32 @putchar(i32) [[G1]]
declare i32 @putchar(i32)
-; CHECK: declare i32 @putchar_unlocked(i32) [[G1]]
+; CHECK: declare i32 @putchar_unlocked(i32){{$}}
declare i32 @putchar_unlocked(i32)
; CHECK: declare i32 @puts(i8* nocapture readonly) [[G1]]
diff --git a/llvm/test/Transforms/InstCombine/unlocked-stdio.ll b/llvm/test/Transforms/InstCombine/unlocked-stdio.ll
deleted file mode 100644
--- a/llvm/test/Transforms/InstCombine/unlocked-stdio.ll
+++ /dev/null
@@ -1,224 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -instcombine -S -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
-
-%struct._IO_FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct._IO_FILE*, i32, i32, i64, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i64, i32, [20 x i8] }
-%struct._IO_marker = type { %struct._IO_marker*, %struct._IO_FILE*, i32 }
-
-@.str = private unnamed_addr constant [5 x i8] c"file\00", align 1
-@.str.1 = private unnamed_addr constant [2 x i8] c"w\00", align 1
-@.str.2 = private unnamed_addr constant [4 x i8] c"str\00", align 1
-@stdout = external global %struct._IO_FILE*, align 8
-@global_file = common global %struct._IO_FILE* null, align 8
-
-define void @external_fgetc_test(%struct._IO_FILE* %f) {
-; CHECK-LABEL: @external_fgetc_test(
-; CHECK-NEXT: [[CALL:%.*]] = call i32 @fgetc(%struct._IO_FILE* [[F:%.*]])
-; CHECK-NEXT: ret void
-;
- %call = call i32 @fgetc(%struct._IO_FILE* %f)
- ret void
-}
-
-declare i32 @fgetc(%struct._IO_FILE* nocapture) #0
-
-define void @external_fgetc_test2() {
-; CHECK-LABEL: @external_fgetc_test2(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[FPUTC_UNLOCKED:%.*]] = call i32 @fputc_unlocked(i32 99, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %call1 = call i32 @fputc(i32 99, %struct._IO_FILE* %call)
- ret void
-}
-
-declare %struct._IO_FILE* @fopen(i8*, i8*)
-declare i32 @fputc(i32, %struct._IO_FILE* nocapture) #0
-
-define internal void @fgetc_test() {
-; CHECK-LABEL: @fgetc_test(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[FGETC_UNLOCKED:%.*]] = call i32 @fgetc_unlocked(%struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %call1 = call i32 @fgetc(%struct._IO_FILE* %call)
- ret void
-}
-
-define void @external_fgetc_internal_test() {
-; CHECK-LABEL: @external_fgetc_internal_test(
-; CHECK-NEXT: call void @fgetc_test()
-; CHECK-NEXT: ret void
-;
- call void @fgetc_test()
- ret void
-}
-
-define internal void @fwrite_test() {
-; CHECK-LABEL: @fwrite_test(
-; CHECK-NEXT: [[S:%.*]] = alloca [10 x i8], align 1
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [10 x i8], [10 x i8]* [[S]], i64 0, i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = call i64 @fwrite_unlocked(i8* nonnull [[ARRAYDECAY]], i64 10, i64 10, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %s = alloca [10 x i8], align 1
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %arraydecay = getelementptr inbounds [10 x i8], [10 x i8]* %s, i64 0, i64 0
- %call1 = call i64 @fwrite(i8* nonnull %arraydecay, i64 10, i64 10, %struct._IO_FILE* %call)
- ret void
-}
-
-define internal void @fread_test() {
-; CHECK-LABEL: @fread_test(
-; CHECK-NEXT: [[S:%.*]] = alloca [10 x i8], align 1
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [10 x i8], [10 x i8]* [[S]], i64 0, i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = call i64 @fread_unlocked(i8* nonnull [[ARRAYDECAY]], i64 10, i64 10, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %s = alloca [10 x i8], align 1
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %arraydecay = getelementptr inbounds [10 x i8], [10 x i8]* %s, i64 0, i64 0
- %call1 = call i64 @fread(i8* nonnull %arraydecay, i64 10, i64 10, %struct._IO_FILE* %call)
- ret void
-}
-
-define internal void @fputs_test() {
-; CHECK-LABEL: @fputs_test(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[TMP1:%.*]] = call i64 @fwrite_unlocked(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %call1 = call i32 @fputs(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), %struct._IO_FILE* %call)
- ret void
-}
-
-define internal void @fgets_test() {
-; CHECK-LABEL: @fgets_test(
-; CHECK-NEXT: [[BUF:%.*]] = alloca [10 x i8], align 1
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [10 x i8], [10 x i8]* [[BUF]], i64 0, i64 0
-; CHECK-NEXT: [[FGETS_UNLOCKED:%.*]] = call i8* @fgets_unlocked(i8* nonnull [[ARRAYDECAY]], i32 10, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %buf = alloca [10 x i8], align 1
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %arraydecay = getelementptr inbounds [10 x i8], [10 x i8]* %buf, i64 0, i64 0
- %call1 = call i8* @fgets(i8* nonnull %arraydecay, i32 10, %struct._IO_FILE* %call)
- ret void
-}
-
-define internal void @fputc_test() {
-; CHECK-LABEL: @fputc_test(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[FPUTC_UNLOCKED:%.*]] = call i32 @fputc_unlocked(i32 99, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %call1 = call i32 @fputc(i32 99, %struct._IO_FILE* %call)
- ret void
-}
-
-define i32 @main() {
-; CHECK-LABEL: @main(
-; CHECK-NEXT: call void @fwrite_test()
-; CHECK-NEXT: call void @fread_test()
-; CHECK-NEXT: call void @fputs_test()
-; CHECK-NEXT: call void @fgets_test()
-; CHECK-NEXT: call void @fputc_test()
-; CHECK-NEXT: call void @fgetc_test()
-; CHECK-NEXT: ret i32 0
-;
- call void @fwrite_test()
- call void @fread_test()
- call void @fputs_test()
- call void @fgets_test()
- call void @fputc_test()
- call void @fgetc_test()
- ret i32 0
-}
-
-declare i32 @fclose(%struct._IO_FILE* nocapture)
-
-define void @test_with_fclose() {
-; CHECK-LABEL: @test_with_fclose(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[TMP1:%.*]] = call i64 @fwrite_unlocked(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: [[CALL2:%.*]] = call i32 @fclose(%struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0)) #2
- %call1 = call i64 @fwrite(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* %call)
- %call2 = call i32 @fclose(%struct._IO_FILE* %call) #2
- ret void
-}
-
-declare void @modify_file(%struct._IO_FILE*)
-
-define void @test_captured_by_function(){
-; CHECK-LABEL: @test_captured_by_function(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: call void @modify_file(%struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: [[CALL1:%.*]] = call i64 @fwrite(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: [[CALL2:%.*]] = call i32 @fclose(%struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0)) #2
- call void @modify_file(%struct._IO_FILE* %call) #2
- %call1 = call i64 @fwrite(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* %call)
- %call2 = call i32 @fclose(%struct._IO_FILE* %call) #2
- ret void
-}
-
-define void @test_captured_by_global_value() {
-; CHECK-LABEL: @test_captured_by_global_value(
-; CHECK-NEXT: [[CALL:%.*]] = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[DOTCAST:%.*]] = ptrtoint %struct._IO_FILE* [[CALL]] to i64
-; CHECK-NEXT: store i64 [[DOTCAST]], i64* bitcast (%struct._IO_FILE** @global_file to i64*), align 8
-; CHECK-NEXT: [[CALL1:%.*]] = call i64 @fwrite(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: [[CALL2:%.*]] = call i32 @fclose(%struct._IO_FILE* [[CALL]])
-; CHECK-NEXT: ret void
-;
- %call = call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0)) #2
- %.cast = ptrtoint %struct._IO_FILE* %call to i64
- store i64 %.cast, i64* bitcast (%struct._IO_FILE** @global_file to i64*), align 8
- %call1 = call i64 @fwrite(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64 3, i64 1, %struct._IO_FILE* %call)
- %call2 = call i32 @fclose(%struct._IO_FILE* %call) #2
- ret void
-}
-
-define void @test_captured_by_standard_stream(i8* nocapture readonly %s) {
-; CHECK-LABEL: @test_captured_by_standard_stream(
-; CHECK-NEXT: [[CALL:%.*]] = tail call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[TMP:%.*]] = load %struct._IO_FILE*, %struct._IO_FILE** @stdout, align 8
-; CHECK-NEXT: [[CALL1:%.*]] = tail call i32 @fputs(i8* [[S:%.*]], %struct._IO_FILE* [[TMP]])
-; CHECK-NEXT: [[CALL2:%.*]] = tail call i32 @fclose(%struct._IO_FILE* [[TMP]])
-; CHECK-NEXT: ret void
-;
- %call = tail call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %tmp = load %struct._IO_FILE*, %struct._IO_FILE** @stdout, align 8
- %call1 = tail call i32 @fputs(i8* %s, %struct._IO_FILE* %tmp)
- %call2 = tail call i32 @fclose(%struct._IO_FILE* %tmp)
- ret void
-}
-
-define void @test_captured_by_arg(i8* nocapture readonly %s, %struct._IO_FILE* nocapture %file) {
-; CHECK-LABEL: @test_captured_by_arg(
-; CHECK-NEXT: [[CALL:%.*]] = tail call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
-; CHECK-NEXT: [[CALL1:%.*]] = tail call i32 @fputs(i8* [[S:%.*]], %struct._IO_FILE* [[FILE:%.*]])
-; CHECK-NEXT: [[CALL2:%.*]] = tail call i32 @fclose(%struct._IO_FILE* [[FILE]])
-; CHECK-NEXT: ret void
-;
- %call = tail call %struct._IO_FILE* @fopen(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
- %call1 = tail call i32 @fputs(i8* %s, %struct._IO_FILE* %file)
- %call2 = tail call i32 @fclose(%struct._IO_FILE* %file)
- ret void
-}
-
-declare i64 @fwrite(i8* nocapture, i64, i64, %struct._IO_FILE* nocapture)
-declare i64 @fread(i8* nocapture, i64, i64, %struct._IO_FILE* nocapture)
-declare i32 @fputs(i8* nocapture readonly, %struct._IO_FILE* nocapture)
-declare i8* @fgets(i8*, i32, %struct._IO_FILE* nocapture)