::
- declare i32 @llvm.objectsize.i32(i8* <object>, i1 <min>, i1 <nullunknown>)
- declare i64 @llvm.objectsize.i64(i8* <object>, i1 <min>, i1 <nullunknown>)
+ declare i32 @llvm.objectsize.i32(i8* <object>, i1 <min>, i1 <nullunknown>, i1 <dynamic>)
+ declare i64 @llvm.objectsize.i64(i8* <object>, i1 <min>, i1 <nullunknown>, i1 <dynamic>)
Overview:
"""""""""
-The ``llvm.objectsize`` intrinsic is designed to provide information to
-the optimizers to determine at compile time whether a) an operation
-(like memcpy) will overflow a buffer that corresponds to an object, or
-b) that a runtime check for overflow isn't necessary. An object in this
-context means an allocation of a specific class, structure, array, or
-other object.
+The ``llvm.objectsize`` intrinsic is designed to provide information to the
+optimizer to determine whether a) an operation (like memcpy) will overflow a
+buffer that corresponds to an object, or b) that a runtime check for overflow
+isn't necessary. An object in this context means an allocation of a specific
+class, structure, array, or other object.
Arguments:
""""""""""
-The ``llvm.objectsize`` intrinsic takes three arguments. The first argument is
-a pointer to or into the ``object``. The second argument determines whether
-``llvm.objectsize`` returns 0 (if true) or -1 (if false) when the object size
-is unknown. The third argument controls how ``llvm.objectsize`` acts when
-``null`` in address space 0 is used as its pointer argument. If it's ``false``,
+The ``llvm.objectsize`` intrinsic takes four arguments. The first argument is a
+pointer to or into the ``object``. The second argument determines whether
+``llvm.objectsize`` returns 0 (if true) or -1 (if false) when the object size is
+unknown. The third argument controls how ``llvm.objectsize`` acts when ``null``
+in address space 0 is used as its pointer argument. If it's ``false``,
``llvm.objectsize`` reports 0 bytes available when given ``null``. Otherwise, if
the ``null`` is in a non-zero address space or if ``true`` is given for the
-third argument of ``llvm.objectsize``, we assume its size is unknown.
+third argument of ``llvm.objectsize``, we assume its size is unknown. The fourth
+argument to ``llvm.objectsize`` determines if the value should be evaluated at
+runtime.
-The second and third arguments only accept constants.
+The second, third, and fourth arguments only accept constants.
Semantics:
""""""""""
-The ``llvm.objectsize`` intrinsic is lowered to a constant representing
-the size of the object concerned. If the size cannot be determined at
-compile time, ``llvm.objectsize`` returns ``i32/i64 -1 or 0`` (depending
-on the ``min`` argument).
+The ``llvm.objectsize`` intrinsic is lowered to a value representing the size of
+the object concerned. If the size cannot be determined, ``llvm.objectsize``
+returns ``i32/i64 -1 or 0`` (depending on the ``min`` argument).
'``llvm.expect``' Intrinsic
^^^^^^^^^^^^^^^^^^^^^^^^^^^
const TargetLibraryInfo *TLI, ObjectSizeOpts Opts = {});
/// Try to turn a call to \@llvm.objectsize into an integer value of the given
-/// Type. Returns null on failure.
-/// If MustSucceed is true, this function will not return null, and may return
-/// conservative values governed by the second argument of the call to
-/// objectsize.
-ConstantInt *lowerObjectSizeCall(IntrinsicInst *ObjectSize,
- const DataLayout &DL,
- const TargetLibraryInfo *TLI,
- bool MustSucceed);
+/// Type. Returns null on failure. If MustSucceed is true, this function will
+/// not return null, and may return conservative values governed by the second
+/// argument of the call to objectsize.
+Value *lowerObjectSizeCall(IntrinsicInst *ObjectSize, const DataLayout &DL,
+ const TargetLibraryInfo *TLI, bool MustSucceed);
+
+
using SizeOffsetType = std::pair<APInt, APInt>;
Value *Zero;
CacheMapTy CacheMap;
PtrSetTy SeenVals;
- bool RoundToAlign;
-
- SizeOffsetEvalType unknown() {
- return std::make_pair(nullptr, nullptr);
- }
+ ObjectSizeOpts EvalOpts;
SizeOffsetEvalType compute_(Value *V);
public:
+ static SizeOffsetEvalType unknown() {
+ return std::make_pair(nullptr, nullptr);
+ }
+
ObjectSizeOffsetEvaluator(const DataLayout &DL, const TargetLibraryInfo *TLI,
- LLVMContext &Context, bool RoundToAlign = false);
+ LLVMContext &Context, ObjectSizeOpts EvalOpts = {});
SizeOffsetEvalType compute(Value *V);
// Internal interface for object size checking
def int_objectsize : Intrinsic<[llvm_anyint_ty],
- [llvm_anyptr_ty, llvm_i1_ty, llvm_i1_ty],
+ [llvm_anyptr_ty, llvm_i1_ty,
+ llvm_i1_ty, llvm_i1_ty],
[IntrNoMem, IntrSpeculatable]>,
GCCBuiltin<"__builtin_object_size">;
return true;
}
-ConstantInt *llvm::lowerObjectSizeCall(IntrinsicInst *ObjectSize,
- const DataLayout &DL,
- const TargetLibraryInfo *TLI,
- bool MustSucceed) {
+Value *llvm::lowerObjectSizeCall(IntrinsicInst *ObjectSize,
+ const DataLayout &DL,
+ const TargetLibraryInfo *TLI,
+ bool MustSucceed) {
assert(ObjectSize->getIntrinsicID() == Intrinsic::objectsize &&
"ObjectSize must be a call to llvm.objectsize!");
EvalOptions.NullIsUnknownSize =
cast<ConstantInt>(ObjectSize->getArgOperand(2))->isOne();
- // FIXME: Does it make sense to just return a failure value if the size won't
- // fit in the output and `!MustSucceed`?
- uint64_t Size;
auto *ResultType = cast<IntegerType>(ObjectSize->getType());
- if (getObjectSize(ObjectSize->getArgOperand(0), Size, DL, TLI, EvalOptions) &&
- isUIntN(ResultType->getBitWidth(), Size))
- return ConstantInt::get(ResultType, Size);
+ bool StaticOnly = cast<ConstantInt>(ObjectSize->getArgOperand(3))->isZero();
+ if (StaticOnly) {
+ // FIXME: Does it make sense to just return a failure value if the size won't
+ // fit in the output and `!MustSucceed`?
+ uint64_t Size;
+ if (getObjectSize(ObjectSize->getArgOperand(0), Size, DL, TLI, EvalOptions) &&
+ isUIntN(ResultType->getBitWidth(), Size))
+ return ConstantInt::get(ResultType, Size);
+ } else {
+ LLVMContext &Ctx = ObjectSize->getFunction()->getContext();
+ ObjectSizeOffsetEvaluator Eval(DL, TLI, Ctx, EvalOptions);
+ SizeOffsetEvalType SizeOffsetPair =
+ Eval.compute(ObjectSize->getArgOperand(0));
+
+ if (SizeOffsetPair != ObjectSizeOffsetEvaluator::unknown()) {
+ IRBuilder<TargetFolder> Builder(Ctx, TargetFolder(DL));
+ Builder.SetInsertPoint(ObjectSize);
+
+ // If we've outside the end of the object, then we can always access
+ // exactly 0 bytes.
+ Value *ResultSize =
+ Builder.CreateSub(SizeOffsetPair.first, SizeOffsetPair.second);
+ Value *UseZero =
+ Builder.CreateICmpULT(SizeOffsetPair.first, SizeOffsetPair.second);
+ return Builder.CreateSelect(UseZero, ConstantInt::get(ResultType, 0),
+ ResultSize);
+ }
+ }
if (!MustSucceed)
return nullptr;
ObjectSizeOffsetEvaluator::ObjectSizeOffsetEvaluator(
const DataLayout &DL, const TargetLibraryInfo *TLI, LLVMContext &Context,
- bool RoundToAlign)
+ ObjectSizeOpts EvalOpts)
: DL(DL), TLI(TLI), Context(Context), Builder(Context, TargetFolder(DL)),
- RoundToAlign(RoundToAlign) {
+ EvalOpts(EvalOpts) {
// IntTy and Zero must be set for each compute() since the address space may
// be different for later objects.
}
}
SizeOffsetEvalType ObjectSizeOffsetEvaluator::compute_(Value *V) {
- ObjectSizeOpts ObjSizeOptions;
- ObjSizeOptions.RoundToAlign = RoundToAlign;
-
- ObjectSizeOffsetVisitor Visitor(DL, TLI, Context, ObjSizeOptions);
+ ObjectSizeOffsetVisitor Visitor(DL, TLI, Context, EvalOpts);
SizeOffsetType Const = Visitor.compute(V);
if (Visitor.bothKnown(Const))
return std::make_pair(ConstantInt::get(Context, Const.first),
default: break;
case Intrinsic::objectsize: {
// Lower all uses of llvm.objectsize.*
- ConstantInt *RetVal =
+ Value *RetVal =
lowerObjectSizeCall(II, *DL, TLInfo, /*MustSucceed=*/true);
resetIteratorIfInvalidatedWhileCalling(BB, [&]() {
Value *NullIsUnknownSize = CI->getNumArgOperands() == 2
? Builder.getFalse()
: CI->getArgOperand(2);
+ Value *Dynamic =
+ CI->getNumArgOperands() < 3 ? Builder.getFalse() : CI->getArgOperand(3);
NewCall = Builder.CreateCall(
- NewFn, {CI->getArgOperand(0), CI->getArgOperand(1), NullIsUnknownSize});
+ NewFn, {CI->getArgOperand(0), CI->getArgOperand(1), NullIsUnknownSize, Dynamic});
break;
}
);
CallInst *NewCall = Builder.CreateCall(
- ObjectSize, {Src, Intr->getOperand(1), Intr->getOperand(2)});
+ ObjectSize,
+ {Src, Intr->getOperand(1), Intr->getOperand(2), Intr->getOperand(3)});
Intr->replaceAllUsesWith(NewCall);
Intr->eraseFromParent();
continue;
switch (II->getIntrinsicID()) {
default: break;
case Intrinsic::objectsize:
- if (ConstantInt *N =
- lowerObjectSizeCall(II, DL, &TLI, /*MustSucceed=*/false))
- return replaceInstUsesWith(CI, N);
+ if (Value *V = lowerObjectSizeCall(II, DL, &TLI, /*MustSucceed=*/false))
+ return replaceInstUsesWith(CI, V);
return nullptr;
case Intrinsic::bswap: {
Value *IIOperand = II->getArgOperand(0);
if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(I)) {
if (II->getIntrinsicID() == Intrinsic::objectsize) {
- ConstantInt *Result = lowerObjectSizeCall(II, DL, &TLI,
- /*MustSucceed=*/true);
+ Value *Result =
+ lowerObjectSizeCall(II, DL, &TLI, /*MustSucceed=*/true);
replaceInstUsesWith(*I, Result);
eraseInstFromFunction(*I);
Users[i] = nullptr; // Skip examining in the next loop.
static bool addBoundsChecking(Function &F, TargetLibraryInfo &TLI,
ScalarEvolution &SE) {
const DataLayout &DL = F.getParent()->getDataLayout();
- ObjectSizeOffsetEvaluator ObjSizeEval(DL, &TLI, F.getContext(),
- /*RoundToAlign=*/true);
+ ObjectSizeOpts EvalOpts;
+ EvalOpts.RoundToAlign = true;
+ ObjectSizeOffsetEvaluator ObjSizeEval(DL, &TLI, F.getContext(), EvalOpts);
// check HANDLE_MEMORY_INST in include/llvm/Instruction.def for memory
// touching instructions
define i32 @test.objectsize() {
; CHECK-LABEL: @test.objectsize(
-; CHECK: @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+; CHECK: @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
%s = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false)
ret i32 %s
}
declare i64 @llvm.objectsize.i64.p0i8(i8*, i1) nounwind readonly
define i64 @test.objectsize.2() {
; CHECK-LABEL: @test.objectsize.2(
-; CHECK: @llvm.objectsize.i64.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+; CHECK: @llvm.objectsize.i64.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
%s = call i64 @llvm.objectsize.i64.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false)
ret i64 %s
}
-
declare <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptrs, i32, <2 x i1> %mask, <2 x double> %src0)
define <2 x double> @tests.masked.load(<2 x double>* %ptr, <2 x i1> %mask, <2 x double> %passthru) {
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1) #0
-declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1) #1
+declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1, i1) #1
; CHECK-LABEL: @promote_with_memcpy(
; CHECK: getelementptr inbounds [64 x [17 x i32]], [64 x [17 x i32]] addrspace(3)* @promote_with_memcpy.alloca, i32 0, i32 %{{[0-9]+}}
; CHECK-LABEL: @promote_with_objectsize(
; CHECK: [[PTR:%[0-9]+]] = getelementptr inbounds [64 x [17 x i32]], [64 x [17 x i32]] addrspace(3)* @promote_with_objectsize.alloca, i32 0, i32 %{{[0-9]+}}
-; CHECK: call i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)* %alloca.bc, i1 false, i1 false)
+; CHECK: call i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)* %alloca.bc, i1 false, i1 false, i1 false)
define amdgpu_kernel void @promote_with_objectsize(i32 addrspace(1)* %out) #0 {
%alloca = alloca [17 x i32], align 4
%alloca.bc = bitcast [17 x i32]* %alloca to i8*
- %size = call i32 @llvm.objectsize.i32.p0i8(i8* %alloca.bc, i1 false, i1 false)
+ %size = call i32 @llvm.objectsize.i32.p0i8(i8* %alloca.bc, i1 false, i1 false, i1 false)
store i32 %size, i32 addrspace(1)* %out
ret void
}
declare i1 @llvm.is.constant.i32(i32 %a) nounwind readnone
declare i1 @llvm.is.constant.i64(i64 %a) nounwind readnone
-declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1) nounwind readnone
+declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1, i1) nounwind readnone
declare i32 @subfun_1()
declare i32 @subfun_2()
; CHECK-O2: %bb.0:
; CHECK-O2: movb $1, %al
; CHECK-O2-NEXT: retq
- %os = call i64 @llvm.objectsize.i64.p0i8(i8* %obj, i1 false, i1 false)
+ %os = call i64 @llvm.objectsize.i64.p0i8(i8* %obj, i1 false, i1 false, i1 false)
%v = call i1 @llvm.is.constant.i64(i64 %os)
ret i1 %v
}
%tmp2 = getelementptr inbounds [1024 x i8], [1024 x i8]* %tmp, i64 0, i64 0
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp2, i8* %arg1, i64 1024, i1 false)
; CHECK: call void @llvm.memcpy
- %tmp3 = call i64 @llvm.objectsize.i64.p0i8(i8* %tmp2, i1 false, i1 true)
+ %tmp3 = call i64 @llvm.objectsize.i64.p0i8(i8* %tmp2, i1 false, i1 true, i1 false)
%tmp4 = call i8* @__strncpy_chk(i8* %arg2, i8* %tmp2, i64 1023, i64 %tmp3)
; CHECK-NOT: call
; CHECK: call i8* @strncpy(i8* %arg2, i8* nonnull %tmp2, i64 1023)
declare i8* @my_special_strncpy(i8* %arg1, i8* %arg2, i64 %size)
-declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1)
+declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1, i1)
declare i8* @__strncpy_chk(i8*, i8*, i64, i64)
; rdar://8785296
define i32 @test1(i8* %ptr) nounwind ssp noredzone align 2 {
entry:
- %0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false, i1 false)
+ %0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false, i1 false, i1 false)
%1 = icmp ugt i64 %0, 3
br i1 %1, label %T, label %trap
define i64 @test_objectsize_null_flag(i8* %ptr) {
entry:
; CHECK: ret i64 -1
- %0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 false, i1 true)
+ %0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 false, i1 true, i1 false)
ret i64 %0
}
define i64 @test_objectsize_null_flag_min(i8* %ptr) {
entry:
; CHECK: ret i64 0
- %0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 true, i1 true)
+ %0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 true, i1 true, i1 false)
ret i64 %0
}
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
- i1 true)
+ i1 true, i1 false)
ret i64 %0
}
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
- i1 true)
+ i1 true, i1 false)
ret i64 %0
}
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
- i1 false)
+ i1 false, i1 false)
ret i64 %0
}
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
- i1 false)
+ i1 false, i1 false)
ret i64 %0
}
-declare i64 @llvm.objectsize.i64(i8*, i1, i1) nounwind readonly
-declare i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)*, i1, i1) nounwind readonly
+declare i64 @llvm.objectsize.i64(i8*, i1, i1, i1) nounwind readonly
+declare i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)*, i1, i1, i1) nounwind readonly
declare void @llvm.trap() nounwind
; CHECK-LABEL: @alloca_overflow_is_unknown(
define i16 @alloca_overflow_is_unknown() {
%i = alloca i8, i32 65537
- %j = call i16 @llvm.objectsize.i16.p0i8(i8* %i, i1 false, i1 false)
+ %j = call i16 @llvm.objectsize.i16.p0i8(i8* %i, i1 false, i1 false, i1 false)
; CHECK: ret i16 -1
ret i16 %j
}
-declare i16 @llvm.objectsize.i16.p0i8(i8*, i1, i1)
+declare i16 @llvm.objectsize.i16.p0i8(i8*, i1, i1, i1)
; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -infer-address-spaces %s | FileCheck %s
; CHECK-LABEL: @objectsize_group_to_flat_i32(
-; CHECK: %val = call i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)* %group.ptr, i1 true, i1 false)
+; CHECK: %val = call i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)* %group.ptr, i1 true, i1 false, i1 false)
define i32 @objectsize_group_to_flat_i32(i8 addrspace(3)* %group.ptr) #0 {
%cast = addrspacecast i8 addrspace(3)* %group.ptr to i8*
- %val = call i32 @llvm.objectsize.i32.p0i8(i8* %cast, i1 true, i1 false)
+ %val = call i32 @llvm.objectsize.i32.p0i8(i8* %cast, i1 true, i1 false, i1 false)
ret i32 %val
}
; CHECK-LABEL: @objectsize_global_to_flat_i64(
-; CHECK: %val = call i64 @llvm.objectsize.i64.p3i8(i8 addrspace(3)* %global.ptr, i1 true, i1 false)
+; CHECK: %val = call i64 @llvm.objectsize.i64.p3i8(i8 addrspace(3)* %global.ptr, i1 true, i1 false, i1 false)
define i64 @objectsize_global_to_flat_i64(i8 addrspace(3)* %global.ptr) #0 {
%cast = addrspacecast i8 addrspace(3)* %global.ptr to i8*
- %val = call i64 @llvm.objectsize.i64.p0i8(i8* %cast, i1 true, i1 false)
+ %val = call i64 @llvm.objectsize.i64.p0i8(i8* %cast, i1 true, i1 false, i1 false)
ret i64 %val
}
ret i64 %ret
}
-declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1) #1
-declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1) #1
+declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1, i1) #1
+declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1, i1) #1
declare i32 @llvm.amdgcn.atomic.inc.i32.p0i32(i32* nocapture, i32, i32, i32, i1) #2
declare i64 @llvm.amdgcn.atomic.inc.i64.p0i64(i64* nocapture, i64, i32, i32, i1) #2
declare i32 @llvm.amdgcn.atomic.dec.i32.p0i32(i32* nocapture, i32, i32, i32, i1) #2
--- /dev/null
+; RUN: opt -instcombine -S < %s | FileCheck %s --dump-input-on-failure
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.14.0"
+
+; Function Attrs: nounwind ssp uwtable
+define i64 @weird_identity_but_ok(i64 %sz) {
+entry:
+ %call = tail call i8* @malloc(i64 %sz)
+ %calc_size = tail call i64 @llvm.objectsize.i64.p0i8(i8* %call, i1 false, i1 true, i1 true)
+ tail call void @free(i8* %call)
+ ret i64 %calc_size
+}
+
+; CHECK: define i64 @weird_identity_but_ok(i64 %sz)
+; CHECK-NEXT: entry:
+; CHECK-NEXT: ret i64 %sz
+; CHECK-NEXT: }
+
+define i64 @phis_are_neat(i1 %which) {
+entry:
+ br i1 %which, label %first_label, label %second_label
+
+first_label:
+ %first_call = call i8* @malloc(i64 10)
+ br label %join_label
+
+second_label:
+ %second_call = call i8* @malloc(i64 30)
+ br label %join_label
+
+join_label:
+ %joined = phi i8* [ %first_call, %first_label ], [ %second_call, %second_label ]
+ %calc_size = tail call i64 @llvm.objectsize.i64.p0i8(i8* %joined, i1 false, i1 true, i1 true)
+ ret i64 %calc_size
+}
+
+; CHECK: %0 = phi i64 [ 10, %first_label ], [ 30, %second_label ]
+; CHECK-NEXT: ret i64 %0
+
+define i64 @internal_pointer(i64 %sz) {
+entry:
+ %ptr = call i8* @malloc(i64 %sz)
+ %ptr2 = getelementptr inbounds i8, i8* %ptr, i32 2
+ %calc_size = call i64 @llvm.objectsize.i64.p0i8(i8* %ptr2, i1 false, i1 true, i1 true)
+ ret i64 %calc_size
+}
+
+; CHECK: define i64 @internal_pointer(i64 %sz)
+; CHECK-NEXT: entry:
+; CHECK-NEXT: %0 = add i64 %sz, -2
+; CHECK-NEXT: %1 = icmp ult i64 %sz, 2
+; CHECK-NEXT: %2 = select i1 %1, i64 0, i64 %0
+; CHECK-NEXT: ret i64 %2
+; CHECK-NEXT: }
+
+define i64 @uses_nullptr_no_fold() {
+entry:
+ %res = call i64 @llvm.objectsize.i64.p0i8(i8* null, i1 false, i1 true, i1 true)
+ ret i64 %res
+}
+
+; CHECK: %res = call i64 @llvm.objectsize.i64.p0i8(i8* null, i1 false, i1 true, i1 true)
+
+define i64 @uses_nullptr_fold() {
+entry:
+ ; NOTE: the third parameter to this call is false, unlike above.
+ %res = call i64 @llvm.objectsize.i64.p0i8(i8* null, i1 false, i1 false, i1 true)
+ ret i64 %res
+}
+
+; CHECK: ret i64 0
+
+; Function Attrs: nounwind allocsize(0)
+declare i8* @malloc(i64)
+
+declare i8* @get_unknown_buffer()
+
+; Function Attrs: nounwind
+declare void @free(i8* nocapture)
+
+; Function Attrs: nounwind readnone speculatable
+declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1, i1)
to label %invoke.cont unwind label %lpad
invoke.cont:
-; CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %call, i1 false, i1 false)
+; CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %call, i1 false, i1 false, i1 false)
%0 = tail call i64 @llvm.objectsize.i64(i8* %call, i1 false)
ret i64 %0
entry:
%call49 = call i64 @strlen(i8* %a)
%add180 = add i64 %call49, 1
- %yo107 = call i64 @llvm.objectsize.i64.p0i8(i8* %b, i1 false, i1 false)
+ %yo107 = call i64 @llvm.objectsize.i64.p0i8(i8* %b, i1 false, i1 false, i1 false)
%call50 = call i8* @__memmove_chk(i8* %b, i8* %a, i64 %add180, i64 %yo107)
; CHECK: %strlen = call i64 @strlen(i8* %b)
; CHECK-NEXT: %strchr2 = getelementptr i8, i8* %b, i64 %strlen
declare i8* @__memmove_chk(i8*, i8*, i64, i64)
declare i8* @strrchr(i8*, i32)
declare i64 @strlen(i8* nocapture)
-declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1)
+declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1, i1)
declare i8* @__memset_chk(i8*, i32, i64, i64)
br i1 %cmp, label %cleanup, label %if.end
if.end:
%bc = bitcast i8* %call to float*
- %call2 = tail call i64 @llvm.objectsize.i64.p0i8(i8* nonnull %call, i1 false, i1 false)
+ %call2 = tail call i64 @llvm.objectsize.i64.p0i8(i8* nonnull %call, i1 false, i1 false, i1 false)
%call3 = tail call i8* @__memset_chk(i8* nonnull %call, i32 0, i64 %size, i64 %call2) #1
br label %cleanup
cleanup:
; CHECK-NEXT: br i1 %cmp, label %cleanup, label %if.end
; CHECK: if.end:
; CHECK-NEXT: %bc = bitcast i8* %call to float*
-; CHECK-NEXT: %call2 = tail call i64 @llvm.objectsize.i64.p0i8(i8* nonnull %call, i1 false, i1 false)
+; CHECK-NEXT: %call2 = tail call i64 @llvm.objectsize.i64.p0i8(i8* nonnull %call, i1 false, i1 false, i1 false)
; CHECK-NEXT: %call3 = tail call i8* @__memset_chk(i8* nonnull %call, i32 0, i64 %size, i64 %call2)
; CHECK-NEXT: br label %cleanup
; CHECK: cleanup:
define i32 @foo() nounwind {
; CHECK-LABEL: @foo(
; CHECK-NEXT: ret i32 60
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
ret i32 %1
}
; CHECK-LABEL: @bar(
entry:
%retval = alloca i8*
- %0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+ %0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
%cmp = icmp ne i32 %0, -1
; CHECK: br i1 true
br i1 %cmp, label %cond.true, label %cond.false
define i32 @f() nounwind {
; CHECK-LABEL: @f(
; CHECK-NEXT: ret i32 0
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr ([60 x i8], [60 x i8]* @a, i32 1, i32 0), i1 false, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr ([60 x i8], [60 x i8]* @a, i32 1, i32 0), i1 false, i1 false, i1 false)
ret i32 %1
}
define i1 @baz() nounwind {
; CHECK-LABEL: @baz(
; CHECK-NEXT: objectsize
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 0), i1 false, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 0), i1 false, i1 false, i1 false)
%2 = icmp eq i32 %1, -1
ret i1 %2
}
; CHECK-LABEL: @test1(
; CHECK: objectsize.i32.p0i8
entry:
- %0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 10), i1 false, i1 false) ; <i64> [#uses=1]
+ %0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 10), i1 false, i1 false, i1 false) ; <i64> [#uses=1]
%1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
br i1 %1, label %"47", label %"46"
define i32 @test2() nounwind {
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret i32 34
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr (i8, i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr (i8, i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false, i1 false, i1 false)
ret i32 %1
}
declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
-declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1) nounwind readonly
+declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1, i1) nounwind readonly
-declare i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)*, i1, i1) nounwind readonly
+declare i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)*, i1, i1, i1) nounwind readonly
declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
bb11:
%0 = getelementptr inbounds float, float* getelementptr inbounds ([480 x float], [480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
%1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
- %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false) ; <i32> [#uses=1]
+ %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false, i1 false) ; <i32> [#uses=1]
%3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
; CHECK: unreachable
unreachable
entry:
%0 = alloca %struct.data, align 8
%1 = bitcast %struct.data* %0 to i8*
- %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false) nounwind
+ %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false, i1 false) nounwind
; CHECK-NOT: @llvm.objectsize
; CHECK: @llvm.memset.p0i8.i32(i8* nonnull align 8 %1, i8 0, i32 1824, i1 false)
%3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
; CHECK-LABEL: @test5(
entry:
%0 = tail call noalias i8* @malloc(i32 20) nounwind
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false, i1 false)
%2 = load i8*, i8** @s, align 8
; CHECK-NOT: @llvm.objectsize
; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %0, i8* align 1 %1, i32 10, i1 false)
; CHECK-LABEL: @test6(
entry:
%0 = tail call noalias i8* @malloc(i32 20) nounwind
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false, i1 false)
%2 = load i8*, i8** @s, align 8
; CHECK-NOT: @llvm.objectsize
; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20)
%alloc = call noalias i8* @malloc(i32 48) nounwind
store i8* %alloc, i8** %esc
%gep = getelementptr inbounds i8, i8* %alloc, i32 16
- %objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false) nounwind readonly
+ %objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false, i1 false) nounwind readonly
; CHECK: ret i32 32
ret i32 %objsize
}
%alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
store i8* %alloc, i8** %esc
%gep = getelementptr inbounds i8, i8* %alloc, i32 5
- %objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false) nounwind readonly
+ %objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false, i1 false) nounwind readonly
; CHECK: ret i32 30
ret i32 %objsize
}
define i32 @test9(i8** %esc) {
%call = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0)) nounwind
store i8* %call, i8** %esc, align 8
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
; CHECK: ret i32 8
ret i32 %1
}
define i32 @test10(i8** %esc) {
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 3) nounwind
store i8* %call, i8** %esc, align 8
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
; CHECK: ret i32 4
ret i32 %1
}
define i32 @test11(i8** %esc) {
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 7) nounwind
store i8* %call, i8** %esc, align 8
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
; CHECK: ret i32 8
ret i32 %1
}
define i32 @test12(i8** %esc) {
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 8) nounwind
store i8* %call, i8** %esc, align 8
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
; CHECK: ret i32 8
ret i32 %1
}
define i32 @test13(i8** %esc) {
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 57) nounwind
store i8* %call, i8** %esc, align 8
- %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
; CHECK: ret i32 8
ret i32 %1
}
; CHECK-NEXT: ret i32 60
define i32 @test18() {
%bc = bitcast [60 x i8]* @globalalias to i8*
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false, i1 false)
ret i32 %1
}
; CHECK: llvm.objectsize
define i32 @test19() {
%bc = bitcast [60 x i8]* @globalalias2 to i8*
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false, i1 false)
ret i32 %1
}
; CHECK-LABEL: @test20(
; CHECK: ret i32 0
define i32 @test20() {
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 false, i1 false)
ret i32 %1
}
; CHECK-LABEL: @test21(
; CHECK: ret i32 0
define i32 @test21() {
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 false)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 false, i1 false)
ret i32 %1
}
; CHECK-LABEL: @test22(
; CHECK: llvm.objectsize
define i32 @test22() {
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 true)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 true, i1 false)
ret i32 %1
}
; CHECK-LABEL: @test23(
; CHECK: llvm.objectsize
define i32 @test23() {
- %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 true)
+ %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 true, i1 false)
ret i32 %1
}
; CHECK: llvm.objectsize
define i32 @test24() {
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false,
- i1 false)
+ i1 false, i1 false)
ret i32 %1
}
; CHECK: llvm.objectsize
define i32 @test25() {
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true,
- i1 false)
+ i1 false, i1 false)
ret i32 %1
}
; CHECK: llvm.objectsize
define i32 @test26() {
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false,
- i1 true)
+ i1 true, i1 false)
ret i32 %1
}
; CHECK: llvm.objectsize
define i32 @test27() {
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true,
- i1 true)
+ i1 true, i1 false)
ret i32 %1
}
%dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
%src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
; CHECK-NEXT: %1 = call i8* @__memcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i32 %len)
; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
- %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false)
+ %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
%ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 %len)
ret i8* %ret
}
; CHECK-NEXT: %strlen = call i32 @strlen(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0))
; CHECK-NEXT: %1 = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 %strlen
; CHECK-NEXT: ret i8* %1
- %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false)
+ %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
%ret = call i8* @__stpcpy_chk(i8* %dst, i8* %dst, i32 %len)
ret i8* %ret
}
}
declare i8* @__stpcpy_chk(i8*, i8*, i32) nounwind
-declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1) nounwind readonly
+declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1, i1) nounwind readonly
%dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
%src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
; CHECK-NEXT: %1 = call i8* @__memcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i32 %len)
; CHECK-NEXT: ret i8* %1
- %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false)
+ %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
%ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 %len)
ret i8* %ret
}
; CHECK-LABEL: @test_simplify6(
%dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
-; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false)
+; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
; CHECK-NEXT: %ret = call i8* @__strcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i32 %len)
; CHECK-NEXT: ret i8* %ret
- %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false)
+ %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
%ret = call i8* @__strcpy_chk(i8* %dst, i8* %dst, i32 %len)
ret i8* %ret
}
}
declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind
-declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1) nounwind readonly
+declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1, i1) nounwind readonly