[clang] [Clang][objectsize] Generate object size calculation for sub-objects (PR #86858)
via cfe-commits
cfe-commits at lists.llvm.org
Wed Mar 27 12:23:47 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-codegen
Author: Bill Wendling (bwendling)
<details>
<summary>Changes</summary>
The second argument of __builtin_dynamic_object_size controls whether it
returns the size of the whole object or the closest surrounding object.
For this struct:
struct s {
int foo;
char bar[2][40];
int baz;
int qux;
};
int main(int argc, char **argv) {
struct s f;
#define report(x) printf(#x ": %zu\n", x)
argc = 1;
report(__builtin_dynamic_object_size(f.bar[argc], 0));
report(__builtin_dynamic_object_size(f.bar[argc], 1));
return 0;
}
should return:
__builtin_dynamic_object_size(f.bar[argc], 0): 48
__builtin_dynamic_object_size(f.bar[argc], 1): 40
determined by the least significant bit of the TYPE.
The LLVM IR isn't sufficient to determine what could be considered a
"sub-object". However, the front-end does have enough information to
determine the size of a sub-object and the offset into that sub-object.
Therefore to convert the intrinsic into a calculation in the front-end
so that we can avoid the information issue.
---
Patch is 51.35 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/86858.diff
5 Files Affected:
- (modified) clang/lib/CodeGen/CGBuiltin.cpp (+169-6)
- (modified) clang/lib/CodeGen/CodeGenFunction.h (+6)
- (modified) clang/test/CodeGen/attr-counted-by.c (+51-51)
- (added) clang/test/CodeGen/object-size-sub-object.c (+303)
- (modified) clang/test/CodeGen/object-size.c (+12-7)
``````````diff
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 2eaceeba617700..b49311459fda6d 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -26,6 +26,7 @@
#include "clang/AST/Decl.h"
#include "clang/AST/OSLog.h"
#include "clang/AST/OperationKinds.h"
+#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/TargetBuiltins.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
@@ -1052,6 +1053,165 @@ CodeGenFunction::emitFlexibleArrayMemberSize(const Expr *E, unsigned Type,
return Builder.CreateSelect(Cmp, Res, ConstantInt::get(ResType, 0, IsSigned));
}
+namespace {
+
+class ObjectSizeVisitor
+ : public ConstStmtVisitor<ObjectSizeVisitor, const Expr *> {
+ bool SkipASE;
+
+public:
+ ObjectSizeVisitor(bool SkipASE = false) : SkipASE(SkipASE) {}
+
+ const Expr *Visit(const Expr *E) {
+ return ConstStmtVisitor<ObjectSizeVisitor, const Expr *>::Visit(E);
+ }
+
+ const Expr *VisitStmt(const Stmt *S) { return nullptr; }
+
+ const Expr *VisitDeclRefExpr(const DeclRefExpr *E) { return E; }
+ const Expr *VisitMemberExpr(const MemberExpr *E) { return E; }
+ const Expr *VisitArraySubscriptExpr(const ArraySubscriptExpr *E) {
+ return SkipASE ? Visit(E->getBase()) : E;
+ }
+
+ const Expr *VisitCastExpr(const CastExpr *E) {
+ return Visit(E->getSubExpr());
+ }
+ const Expr *VisitParenExpr(const ParenExpr *E) {
+ return Visit(E->getSubExpr());
+ }
+ const Expr *VisitUnaryAddrOf(const clang::UnaryOperator *E) {
+ return Visit(E->getSubExpr());
+ }
+ const Expr *VisitUnaryDeref(const clang::UnaryOperator *E) {
+ return Visit(E->getSubExpr());
+ }
+};
+
+} // end anonymous namespace
+
+/// getLastDecl - Return the last FieldDecl in the struct.
+static const FieldDecl *getLastDecl(const RecordDecl *RD) {
+ const Decl *LastDecl = nullptr;
+ for (const Decl *D : RD->decls())
+ if (isa<FieldDecl>(D) || isa<RecordDecl>(D))
+ LastDecl = D;
+
+ if (const auto *LastRD = dyn_cast<RecordDecl>(LastDecl)) {
+ LastDecl = getLastDecl(LastRD);
+ } else if (const auto *LastFD = dyn_cast<FieldDecl>(LastDecl)) {
+ QualType Ty = LastFD->getType();
+ if (Ty->isPointerType())
+ Ty = Ty->getPointeeType();
+
+ if (const RecordDecl *Rec = Ty->getAsRecordDecl())
+ // The last FieldDecl is a structure. Look into that struct to find its
+ // last FieldDecl.
+ LastDecl = getLastDecl(Rec);
+ }
+
+ return dyn_cast_if_present<FieldDecl>(LastDecl);
+}
+
+/// tryToCalculateSubObjectSize - It may be possible to calculate the
+/// sub-object size of an array and skip the generation of the llvm.objectsize
+/// intrinsic. This avoids the complication in conveying the sub-object's
+/// information to the backend. This calculation works for an N-dimentional
+/// array.
+llvm::Value *
+CodeGenFunction::tryToCalculateSubObjectSize(const Expr *E, unsigned Type,
+ llvm::IntegerType *ResType) {
+ if ((Type & 0x01) != 1)
+ // Only support sub-object calculation.
+ return nullptr;
+
+ const Expr *ObjectRef = ObjectSizeVisitor().Visit(E);
+ if (!ObjectRef)
+ return nullptr;
+
+ QualType ObjectRefType = ObjectRef->getType();
+ if (ObjectRefType->isPointerType())
+ ObjectRefType = ObjectRefType->getPointeeType();
+
+ // Collect the base and index from the array.
+ QualType ObjectBaseRefTy;
+ const Expr *ArrayIdx = nullptr;
+
+ if (const auto *ASE = dyn_cast<ArraySubscriptExpr>(ObjectRef)) {
+ ArrayIdx = ASE->getIdx()->IgnoreParenImpCasts();
+
+ const Expr *ArrayRefBase = ASE->getBase()->IgnoreParenImpCasts();
+ if (isa<ArraySubscriptExpr>(ArrayRefBase)) {
+ ObjectBaseRefTy = ArrayRefBase->getType();
+ if (ObjectBaseRefTy->isPointerType())
+ ObjectBaseRefTy = ObjectBaseRefTy->getPointeeType();
+ }
+ }
+
+ ASTContext &Ctx = getContext();
+ if (!ArrayIdx || ArrayIdx->HasSideEffects(Ctx))
+ return nullptr;
+
+ // Check to see if the Decl is a flexible array member. Processing of the
+ // 'counted_by' attribute is done by now. So we don't have any information on
+ // its size, so return MAX_INT.
+ //
+ // Rerun the visitor to find the base expr: MemberExpr or DeclRefExpr.
+ ObjectRef = ObjectSizeVisitor(true).Visit(ObjectRef);
+ if (!ObjectRef)
+ return nullptr;
+
+ if (const auto *ME = dyn_cast<MemberExpr>(ObjectRef)) {
+ if (const auto *FD = dyn_cast<FieldDecl>(ME->getMemberDecl())) {
+ const LangOptions::StrictFlexArraysLevelKind StrictFlexArraysLevel =
+ getLangOpts().getStrictFlexArraysLevel();
+ const RecordDecl *OuterRD =
+ FD->getParent()->getOuterLexicalRecordContext();
+ const FieldDecl *LastFD = getLastDecl(OuterRD);
+
+ if (LastFD == FD && Decl::isFlexibleArrayMemberLike(
+ Ctx, FD, FD->getType(), StrictFlexArraysLevel,
+ /*IgnoreTemplateOrMacroSubstitution=*/true))
+ return ConstantInt::get(ResType, -1, /*isSigned=*/true);
+ }
+ }
+
+ if (ObjectBaseRefTy.isNull()) {
+ ObjectBaseRefTy = ObjectRef->getType();
+ if (ObjectBaseRefTy->isPointerType())
+ ObjectBaseRefTy = ObjectBaseRefTy->getPointeeType();
+ }
+
+ // Generate the calculation:
+ //
+ // S Object[n_1][n_2]...[n_m]; /* M-dimentional array */
+ //
+ // ObjectRef = Object[n_1]...[n_x]; /* 0 < x < m */
+ // ObjectBaseRef = Object[n_1]...[n_{x-1}];
+ //
+ // ArrayRefSize = sizeof( typeof( ObjectRef ) );
+ // ArrayRefBaseSize = sizeof( typeof( ObjectBaseRef ) );
+ //
+ // Size = ArrayRefSize - (ArrayRefBaseSize * ArrayIdx);
+ // return Size > 0 ? Size : 0;
+ //
+ Value *ArrayRefSize = ConstantInt::get(
+ ResType, Ctx.getTypeSizeInChars(ObjectRefType).getQuantity(),
+ /*isSigned=*/true);
+ Value *ArrayRefBaseSize = ConstantInt::get(
+ ResType, Ctx.getTypeSizeInChars(ObjectBaseRefTy).getQuantity(),
+ /*isSigned=*/true);
+
+ Value *Res = EmitScalarExpr(ArrayIdx);
+
+ Res = Builder.CreateIntCast(Res, ResType, /*isSigned=*/true);
+ Res =
+ Builder.CreateSub(ArrayRefBaseSize, Builder.CreateMul(ArrayRefSize, Res));
+
+ return Builder.CreateSelect(Builder.CreateIsNotNeg(Res), Res,
+ ConstantInt::get(ResType, 0, /*isSigned=*/true));
+}
+
/// Returns a Value corresponding to the size of the given expression.
/// This Value may be either of the following:
/// - A llvm::Argument (if E is a param with the pass_object_size attribute on
@@ -1084,18 +1244,21 @@ CodeGenFunction::emitBuiltinObjectSize(const Expr *E, unsigned Type,
}
}
+ // LLVM can't handle Type=3 appropriately, and __builtin_object_size shouldn't
+ // evaluate E for side-effects. In either case, we shouldn't lower to
+ // @llvm.objectsize.
+ if (Type == 3 || (!EmittedE && E->HasSideEffects(getContext())))
+ return getDefaultBuiltinObjectSizeResult(Type, ResType);
+
if (IsDynamic) {
// Emit special code for a flexible array member with the "counted_by"
// attribute.
if (Value *V = emitFlexibleArrayMemberSize(E, Type, ResType))
return V;
- }
- // LLVM can't handle Type=3 appropriately, and __builtin_object_size shouldn't
- // evaluate E for side-effects. In either case, we shouldn't lower to
- // @llvm.objectsize.
- if (Type == 3 || (!EmittedE && E->HasSideEffects(getContext())))
- return getDefaultBuiltinObjectSizeResult(Type, ResType);
+ if (Value *V = tryToCalculateSubObjectSize(E, Type, ResType))
+ return V;
+ }
Value *Ptr = EmittedE ? EmittedE : EmitScalarExpr(E);
assert(Ptr->getType()->isPointerTy() &&
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index e8f8aa601ed017..640f2cf2c51b56 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -4919,6 +4919,12 @@ class CodeGenFunction : public CodeGenTypeCache {
llvm::Value *EmittedE,
bool IsDynamic);
+ /// Try to calculate the sub-object size (i.e. \p Type's least significant
+ /// bit is set). It afoids the complication in conveying the sub-object
+ /// information to the backend.
+ llvm::Value *tryToCalculateSubObjectSize(const Expr *E, unsigned Type,
+ llvm::IntegerType *ResType);
+
/// Emits the size of E, as required by __builtin_object_size. This
/// function is aware of pass_object_size parameters, and will act accordingly
/// if E is a parameter with the pass_object_size attribute.
diff --git a/clang/test/CodeGen/attr-counted-by.c b/clang/test/CodeGen/attr-counted-by.c
index 1fb39f9a346667..16e586baaced97 100644
--- a/clang/test/CodeGen/attr-counted-by.c
+++ b/clang/test/CodeGen/attr-counted-by.c
@@ -66,7 +66,7 @@ struct anon_struct {
// SANITIZE-WITH-ATTR-NEXT: [[TMP1:%.*]] = icmp ult i64 [[IDXPROM]], [[TMP0]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: br i1 [[TMP1]], label [[CONT3:%.*]], label [[HANDLER_OUT_OF_BOUNDS:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: handler.out_of_bounds:
-// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB2:[0-9]+]], i64 [[IDXPROM]]) #[[ATTR10:[0-9]+]], !nosanitize [[META2]]
+// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB1:[0-9]+]], i64 [[IDXPROM]]) #[[ATTR10:[0-9]+]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: cont3:
// SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 12
@@ -114,7 +114,7 @@ void test1(struct annotated *p, int index, int val) {
// SANITIZE-WITH-ATTR-NEXT: [[TMP1:%.*]] = icmp ugt i64 [[TMP0]], [[INDEX]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: br i1 [[TMP1]], label [[CONT3:%.*]], label [[HANDLER_OUT_OF_BOUNDS:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: handler.out_of_bounds:
-// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB4:[0-9]+]], i64 [[INDEX]]) #[[ATTR10]], !nosanitize [[META2]]
+// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB3:[0-9]+]], i64 [[INDEX]]) #[[ATTR10]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: cont3:
// SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 12
@@ -203,7 +203,7 @@ size_t test2_bdos(struct annotated *p) {
// SANITIZE-WITH-ATTR-NEXT: [[TMP1:%.*]] = icmp ugt i64 [[TMP0]], [[INDEX]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: br i1 [[TMP1]], label [[CONT3:%.*]], label [[HANDLER_OUT_OF_BOUNDS:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: handler.out_of_bounds:
-// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB5:[0-9]+]], i64 [[INDEX]]) #[[ATTR10]], !nosanitize [[META2]]
+// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB4:[0-9]+]], i64 [[INDEX]]) #[[ATTR10]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: cont3:
// SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 12
@@ -308,7 +308,7 @@ size_t test3_bdos(struct annotated *p) {
// SANITIZE-WITH-ATTR-NEXT: [[TMP1:%.*]] = icmp ult i64 [[IDXPROM]], [[TMP0]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: br i1 [[TMP1]], label [[CONT4:%.*]], label [[HANDLER_OUT_OF_BOUNDS:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: handler.out_of_bounds:
-// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB6:[0-9]+]], i64 [[IDXPROM]]) #[[ATTR10]], !nosanitize [[META2]]
+// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB5:[0-9]+]], i64 [[IDXPROM]]) #[[ATTR10]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: cont4:
// SANITIZE-WITH-ATTR-NEXT: [[TMP2:%.*]] = icmp sgt i32 [[DOT_COUNTED_BY_LOAD]], 2
@@ -325,7 +325,7 @@ size_t test3_bdos(struct annotated *p) {
// SANITIZE-WITH-ATTR-NEXT: [[TMP7:%.*]] = icmp ult i64 [[IDXPROM13]], [[TMP6]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: br i1 [[TMP7]], label [[CONT20:%.*]], label [[HANDLER_OUT_OF_BOUNDS16:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: handler.out_of_bounds16:
-// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB7:[0-9]+]], i64 [[IDXPROM13]]) #[[ATTR10]], !nosanitize [[META2]]
+// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB6:[0-9]+]], i64 [[IDXPROM13]]) #[[ATTR10]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: cont20:
// SANITIZE-WITH-ATTR-NEXT: [[TMP8:%.*]] = icmp sgt i32 [[DOT_COUNTED_BY_LOAD7]], 3
@@ -342,7 +342,7 @@ size_t test3_bdos(struct annotated *p) {
// SANITIZE-WITH-ATTR-NEXT: [[TMP13:%.*]] = icmp ult i64 [[IDXPROM30]], [[TMP12]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: br i1 [[TMP13]], label [[CONT37:%.*]], label [[HANDLER_OUT_OF_BOUNDS33:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: handler.out_of_bounds33:
-// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB8:[0-9]+]], i64 [[IDXPROM30]]) #[[ATTR10]], !nosanitize [[META2]]
+// SANITIZE-WITH-ATTR-NEXT: tail call void @__ubsan_handle_out_of_bounds_abort(ptr nonnull @[[GLOB7:[0-9]+]], i64 [[IDXPROM30]]) #[[ATTR10]], !nosanitize [[META2]]
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
// SANITIZE-WITH-ATTR: cont37:
// SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX35:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM30]]
@@ -405,33 +405,33 @@ size_t test3_bdos(struct annotated *p) {
// SANITIZE-WITHOUT-ATTR-NEXT: entry:
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 12
// SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM:%.*]] = sext i32 [[INDEX]] to i64
-// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM]]
-// SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX5]], align 4, !tbaa [[TBAA2]]
+// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM]]
+// SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
// SANITIZE-WITHOUT-ATTR-NEXT: [[ADD:%.*]] = add nsw i32 [[INDEX]], 1
-// SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM17:%.*]] = sext i32 [[ADD]] to i64
-// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX18:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM17]]
-// SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX18]], align 4, !tbaa [[TBAA2]]
-// SANITIZE-WITHOUT-ATTR-NEXT: [[ADD31:%.*]] = add nsw i32 [[INDEX]], 2
-// SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM32:%.*]] = sext i32 [[ADD31]] to i64
-// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX33:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM32]]
-// SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX33]], align 4, !tbaa [[TBAA2]]
+// SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM6:%.*]] = sext i32 [[ADD]] to i64
+// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX7:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM6]]
+// SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX7]], align 4, !tbaa [[TBAA2]]
+// SANITIZE-WITHOUT-ATTR-NEXT: [[ADD13:%.*]] = add nsw i32 [[INDEX]], 2
+// SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM14:%.*]] = sext i32 [[ADD13]] to i64
+// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX15:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM14]]
+// SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX15]], align 4, !tbaa [[TBAA2]]
// SANITIZE-WITHOUT-ATTR-NEXT: ret void
//
// NO-SANITIZE-WITHOUT-ATTR-LABEL: define dso_local void @test4(
-// NO-SANITIZE-WITHOUT-ATTR-SAME: ptr noundef [[P:%.*]], i32 noundef [[INDEX:%.*]], i32 noundef [[FAM_IDX:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// NO-SANITIZE-WITHOUT-ATTR-SAME: ptr nocapture noundef writeonly [[P:%.*]], i32 noundef [[INDEX:%.*]], i32 noundef [[FAM_IDX:%.*]]) local_unnamed_addr #[[ATTR0]] {
// NO-SANITIZE-WITHOUT-ATTR-NEXT: entry:
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 12
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM:%.*]] = sext i32 [[INDEX]] to i64
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM]]
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX3]], align 4, !tbaa [[TBAA2]]
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM]]
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ADD:%.*]] = add nsw i32 [[INDEX]], 1
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM9:%.*]] = sext i32 [[ADD]] to i64
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX10:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM9]]
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX10]], align 4, !tbaa [[TBAA2]]
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ADD17:%.*]] = add nsw i32 [[INDEX]], 2
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM18:%.*]] = sext i32 [[ADD17]] to i64
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX19:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM18]]
-// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX19]], align 4, !tbaa [[TBAA2]]
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM2:%.*]] = sext i32 [[ADD]] to i64
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM2]]
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX3]], align 4, !tbaa [[TBAA2]]
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ADD5:%.*]] = add nsw i32 [[INDEX]], 2
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[IDXPROM6:%.*]] = sext i32 [[ADD5]] to i64
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX7:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[IDXPROM6]]
+// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 255, ptr [[ARRAYIDX7]], align 4, !tbaa [[TBAA2]]
// NO-SANITIZE-WITHOUT-ATTR-NEXT: ret void
//
void test4(struct annotated *p, int index, int fam_idx) {
@@ -471,13 +471,13 @@ void test4(struct annotated *p, int index, int fam_idx) {
// NO-SANITIZE-WITH-ATTR-NEXT: [[TMP7:%.*]] = select i1 [[TMP6]], i64 [[TMP3]], i64 0
// NO-SANITIZE-WITH-ATTR-NEXT: ret i64 [[TMP7]]
//
-// SANITIZE-WITHOUT-ATTR-LABEL: define dso_local i64 @test4_bdos(
-// SANITIZE-WITHOUT-ATTR-SAME: ptr noundef [[P:%.*]], i32 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// SANITIZE-WITHOUT-ATTR-LABEL: define dso_local noundef i64 @test4_bdos(
+// SANITIZE-WITHOUT-ATTR-SAME: ptr nocapture noundef readnone [[P:%.*]], i32 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR2]] {
// SANITIZE-WITHOUT-ATTR-NEXT: entry:
// SANITIZE-WITHOUT-ATTR-NEXT: ret i64 -1
//
-// NO-SANITIZE-WITHOUT-ATTR-LABEL: define dso_local i64 @test4_bdos(
-// NO-SANITIZE-WITHOUT-ATTR-SAME: ptr noundef readnone [[P:%.*]], i32 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR1]] {
+// NO-SANITIZE-WITHOUT-ATTR-LABEL: define dso_local noundef i64 @test4_bdos(
+// NO-SANITIZE-WITHOUT-ATTR-SAME: ptr nocapture noundef readnone [[P:%.*]], i32 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR1]] {
// NO-SANITIZE-WITHOUT-ATTR-NEXT: entry:
// NO-SANITIZE-WITHOUT-ATTR-NEXT: ret i64 -1
//
@@ -494,7 +494,7 @@ size_t test4_bdos(struct annotated *p, int index) {
// SANITIZE-WITH-ATTR-NEXT: [[TMP0:%.*]] = icmp ugt i64 [[DO...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/86858
More information about the cfe-commits
mailing list