| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 |
| ; RUN: opt -passes='default<O2>' -S %s | FileCheck %s |
| |
| ; Slightly reduced test case for a loop iterating over a std::span with libc++ hardening. |
| ; TODO: The runtime check in the loop should be removed. |
| ; |
| ; #include <span> |
| ; #include <iostream> |
| ; |
| ; void use(unsigned&); |
| ; |
| ; void fill_with_foreach(std::span<unsigned> elems) { |
| ; for (unsigned& x : elems) |
| ; use(x); |
| ; } |
| |
| %"class.std::__1::span" = type { ptr, i64 } |
| %"struct.std::__1::__bounded_iter" = type { ptr, ptr, ptr } |
| |
| define void @test_fill_with_foreach([2 x i64] %elems.coerce) { |
| ; CHECK-LABEL: define void @test_fill_with_foreach |
| ; CHECK-SAME: ([2 x i64] [[ELEMS_COERCE:%.*]]) local_unnamed_addr { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[ELEMS_COERCE_FCA_0_EXTRACT:%.*]] = extractvalue [2 x i64] [[ELEMS_COERCE]], 0 |
| ; CHECK-NEXT: [[TMP0:%.*]] = inttoptr i64 [[ELEMS_COERCE_FCA_0_EXTRACT]] to ptr |
| ; CHECK-NEXT: [[ELEMS_COERCE_FCA_1_EXTRACT:%.*]] = extractvalue [2 x i64] [[ELEMS_COERCE]], 1 |
| ; CHECK-NEXT: [[ADD_PTR_I:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i64 [[ELEMS_COERCE_FCA_1_EXTRACT]] |
| ; CHECK-NEXT: [[CMP_NOT_I_I_I_I:%.*]] = icmp slt i64 [[ELEMS_COERCE_FCA_1_EXTRACT]], 0 |
| ; CHECK-NEXT: br i1 [[CMP_NOT_I_I_I_I]], label [[ERROR:%.*]], label [[FOR_COND_PREHEADER:%.*]] |
| ; CHECK: for.cond.preheader: |
| ; CHECK-NEXT: [[CMP_I_NOT2:%.*]] = icmp eq i64 [[ELEMS_COERCE_FCA_1_EXTRACT]], 0 |
| ; CHECK-NEXT: br i1 [[CMP_I_NOT2]], label [[COMMON_RET:%.*]], label [[FOR_BODY:%.*]] |
| ; CHECK: common.ret: |
| ; CHECK-NEXT: ret void |
| ; CHECK: error: |
| ; CHECK-NEXT: tail call void @error() |
| ; CHECK-NEXT: br label [[COMMON_RET]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[__BEGIN1_SROA_0_03:%.*]] = phi ptr [ [[INCDEC_PTR_I:%.*]], [[FOR_LATCH:%.*]] ], [ [[TMP0]], [[FOR_COND_PREHEADER]] ] |
| ; CHECK-NEXT: [[CMP2_I_I:%.*]] = icmp ult ptr [[__BEGIN1_SROA_0_03]], [[ADD_PTR_I]] |
| ; CHECK-NEXT: br i1 [[CMP2_I_I]], label [[FOR_LATCH]], label [[ERROR]] |
| ; CHECK: for.latch: |
| ; CHECK-NEXT: tail call void @use(ptr noundef nonnull align 4 dereferenceable(4) [[__BEGIN1_SROA_0_03]]) |
| ; CHECK-NEXT: [[INCDEC_PTR_I]] = getelementptr inbounds i32, ptr [[__BEGIN1_SROA_0_03]], i64 1 |
| ; CHECK-NEXT: [[CMP_I_NOT:%.*]] = icmp eq ptr [[INCDEC_PTR_I]], [[ADD_PTR_I]] |
| ; CHECK-NEXT: br i1 [[CMP_I_NOT]], label [[COMMON_RET]], label [[FOR_BODY]] |
| ; |
| entry: |
| %elems = alloca %"class.std::__1::span", align 8 |
| %__begin1 = alloca %"struct.std::__1::__bounded_iter", align 8 |
| %__end1 = alloca %"struct.std::__1::__bounded_iter", align 8 |
| %elems.coerce.fca.0.extract = extractvalue [2 x i64] %elems.coerce, 0 |
| store i64 %elems.coerce.fca.0.extract, ptr %elems, align 8 |
| %elems.coerce.fca.1.extract = extractvalue [2 x i64] %elems.coerce, 1 |
| %elems.coerce.fca.1.gep = getelementptr inbounds [2 x i64], ptr %elems, i64 0, i64 1 |
| store i64 %elems.coerce.fca.1.extract, ptr %elems.coerce.fca.1.gep, align 8 |
| call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %__begin1) #6 |
| %0 = load ptr, ptr %elems, align 8 |
| %__size_.i.i = getelementptr inbounds %"class.std::__1::span", ptr %elems, i64 0, i32 1 |
| %1 = load i64, ptr %__size_.i.i, align 8 |
| %add.ptr.i = getelementptr inbounds i32, ptr %0, i64 %1 |
| store ptr %0, ptr %__begin1, align 8 |
| %__begin_.i.i.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 1 |
| store ptr %0, ptr %__begin_.i.i.i.i, align 8 |
| %__end_.i.i.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 2 |
| store ptr %add.ptr.i, ptr %__end_.i.i.i.i, align 8 |
| %cmp.not.i.i.i.i = icmp slt i64 %1, 0 |
| br i1 %cmp.not.i.i.i.i, label %error, label %check.2 |
| |
| check.2: |
| call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %__end1) #6 |
| %l4 = load ptr, ptr %elems, align 8 |
| %__size_.i.i4 = getelementptr inbounds %"class.std::__1::span", ptr %elems, i64 0, i32 1 |
| %l5 = load i64, ptr %__size_.i.i4, align 8 |
| %add.ptr.i5 = getelementptr inbounds i32, ptr %l4, i64 %l5 |
| store ptr %add.ptr.i5, ptr %__end1, align 8 |
| %__begin_.i.i.i.i6 = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__end1, i64 0, i32 1 |
| store ptr %l4, ptr %__begin_.i.i.i.i6, align 8 |
| %__end_.i.i.i.i7 = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__end1, i64 0, i32 2 |
| store ptr %add.ptr.i5, ptr %__end_.i.i.i.i7, align 8 |
| %cmp.not.i.i.i.i8 = icmp slt i64 %l5, 0 |
| br i1 %cmp.not.i.i.i.i8, label %error, label %for.cond |
| |
| error: |
| call void @error() |
| ret void |
| |
| for.cond: |
| %l8 = load ptr, ptr %__begin1, align 8 |
| %l9 = load ptr, ptr %__end1, align 8 |
| %cmp.i = icmp ne ptr %l8, %l9 |
| br i1 %cmp.i, label %for.body, label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond |
| call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %__end1) |
| call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %__begin1) |
| ret void |
| |
| for.body: ; preds = %for.cond |
| %l10 = load ptr, ptr %__begin1, align 8 |
| %__begin_.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 1 |
| %l11 = load ptr, ptr %__begin_.i.i, align 8 |
| %cmp.not.i.i = icmp uge ptr %l10, %l11 |
| %__end_.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 2 |
| %l12 = load ptr, ptr %__end_.i.i, align 8 |
| %cmp2.i.i = icmp ult ptr %l10, %l12 |
| %sel = select i1 %cmp.not.i.i, i1 %cmp2.i.i, i1 false |
| br i1 %sel, label %for.latch, label %error |
| |
| for.latch: |
| call void @use(ptr noundef nonnull align 4 dereferenceable(4) %l10) |
| %l = load ptr, ptr %__begin1, align 8 |
| %incdec.ptr.i = getelementptr inbounds i32, ptr %l, i64 1 |
| store ptr %incdec.ptr.i, ptr %__begin1, align 8 |
| br label %for.cond |
| } |
| |
| declare void @error() |
| |
| declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) |
| |
| declare void @use(ptr noundef nonnull align 4 dereferenceable(4)) |
| |
| declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) |