xref: /aosp_15_r20/external/llvm/test/Instrumentation/MemorySanitizer/byval-alignment.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; Test that copy alignment for byval arguments is limited by param-tls slot alignment.
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
6*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-unknown-linux-gnu"
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Worker%struct.S = type { i64, i64, i64, [8 x i8] }
9*9880d681SAndroid Build Coastguard Worker
10*9880d681SAndroid Build Coastguard Worker; CHECK: [[A:%.*]] = bitcast i64* {{.*}} add {{.*}} ptrtoint {{.*}} @__msan_param_tls {{.*}} i64 8)
11*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[A]], i8* {{.*}}, i64 32, i32 8, i1 false)
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Workerdefine void @Caller() sanitize_memory {
14*9880d681SAndroid Build Coastguard Workerentry:
15*9880d681SAndroid Build Coastguard Worker  %agg.tmp = alloca %struct.S, align 16
16*9880d681SAndroid Build Coastguard Worker  call void @Callee(i32 1, %struct.S* byval align 16 %agg.tmp)
17*9880d681SAndroid Build Coastguard Worker  ret void
18*9880d681SAndroid Build Coastguard Worker}
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard Workerdeclare void @Callee(i32, %struct.S* byval align 16)
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