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1; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck %s2; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -S -passes=msan 2>&1 | FileCheck %s -check-prefixes=CHECK,CHECK-ORIGIN3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"4target triple = "x86_64-unknown-linux-gnu"5 6declare void @__atomic_load(i64, ptr, ptr, i32)7declare void @__atomic_store(i64, ptr, ptr, i32)8 9define i24 @odd_sized_load(ptr %ptr) sanitize_memory {10; CHECK: @odd_sized_load(ptr {{.*}}[[PTR:%.+]])11; CHECK: [[VAL_PTR:%.*]] = alloca i24, align 112; CHECK-ORIGIN: @__msan_set_alloca_origin13; CHECK: call void @__atomic_load(i64 3, ptr [[PTR]], ptr [[VAL_PTR]], i32 2)14 15; CHECK: ptrtoint ptr [[PTR]]16; CHECK: xor17; CHECK: [[SPTR_I8:%.*]] = inttoptr18; CHECK-ORIGIN: add19; CHECK-ORIGIN: and20; CHECK-ORIGIN: [[OPTR:%.*]] = inttoptr21 22; CHECK: ptrtoint ptr [[VAL_PTR]]23; CHECK: xor24; CHECK: [[VAL_SPTR_I8:%.*]] = inttoptr25; CHECK-ORIGIN: add26; CHECK-ORIGIN: and27; CHECK-ORIGIN: [[VAL_OPTR:%.*]] = inttoptr28 29; CHECK: call void @llvm.memcpy{{.*}}(ptr align 1 [[VAL_SPTR_I8]], ptr align 1 [[SPTR_I8]], i64 330 31; CHECK-ORIGIN: [[ARG_ORIGIN:%.*]] = load i32, ptr [[OPTR]]32; CHECK-ORIGIN: [[VAL_ORIGIN:%.*]] = call i32 @__msan_chain_origin(i32 [[ARG_ORIGIN]])33; CHECK-ORIGIN: call void @__msan_set_origin(ptr [[VAL_PTR]], i64 3, i32 [[VAL_ORIGIN]])34 35; CHECK: [[VAL:%.*]] = load i24, ptr [[VAL_PTR]]36; CHECK: ret i24 [[VAL]]37 %val_ptr = alloca i24, align 138 call void @__atomic_load(i64 3, ptr %ptr, ptr %val_ptr, i32 0)39 %val = load i24, ptr %val_ptr40 ret i24 %val41}42 43define void @odd_sized_store(ptr %ptr, i24 %val) sanitize_memory {44; CHECK: @odd_sized_store(ptr {{.*}}[[PTR:%.+]], i24 {{.*}}[[VAL:%.+]])45; CHECK: [[VAL_PTR:%.*]] = alloca i24, align 146; CHECK: store i24 [[VAL]], ptr [[VAL_PTR]]47 48; CHECK: ptrtoint ptr [[PTR]]49; CHECK: xor50; CHECK: [[SPTR_I8:%.*]] = inttoptr51; CHECK: call void @llvm.memset{{.*}}(ptr align 1 [[SPTR_I8]], i8 0, i64 352 53; CHECK: call void @__atomic_store(i64 3, ptr [[VAL_PTR]], ptr [[PTR]], i32 3)54; CHECK: ret void55 %val_ptr = alloca i24, align 156 store i24 %val, ptr %val_ptr57 call void @__atomic_store(i64 3, ptr %val_ptr, ptr %ptr, i32 0)58 ret void59}60 61