1 ; This check verifies that arguments passed by value get redzones.
2 ; RUN: opt < %s -asan -asan-realign-stack=32 -S | FileCheck %s
3 ; RUN: opt < %s -asan -asan-realign-stack=32 -asan-force-dynamic-shadow -S | FileCheck %s
4 ; RUN: opt < %s -asan -asan-realign-stack=32 -asan-mapping-scale=5 -S | FileCheck %s
5 ; RUN: opt < %s -asan -asan-realign-stack=32 -asan-force-dynamic-shadow -asan-mapping-scale=5 -S | FileCheck %s
8 target 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"
9 target triple = "x86_64-unknown-linux-gnu"
11 %struct.A = type { [8 x i32] }
13 declare i32 @bar(%struct.A*)
15 ; Test behavior for named argument with explicit alignment. The memcpy and
16 ; alloca alignments should match the explicit alignment of 64.
17 define void @foo(%struct.A* byval align 64 %a) sanitize_address {
20 ; CHECK: call i64 @__asan_stack_malloc
21 ; CHECK: alloca i8, i64 {{.*}} align 64
22 ; CHECK: [[copyPtr:%[^ \t]+]] = inttoptr i64 %{{[^ \t]+}} to %struct.A*
23 ; CHECK: [[copyBytePtr:%[^ \t]+]] = bitcast %struct.A* [[copyPtr]]
24 ; CHECK: [[aBytePtr:%[^ \t]+]] = bitcast %struct.A* %a
25 ; CHECK: call void @llvm.memcpy{{[^%]+}}[[copyBytePtr]]{{[^%]+}} align 64 [[aBytePtr]],{{[^,]+}},
26 ; CHECK: call i32 @bar(%struct.A* [[copyPtr]])
29 %call = call i32 @bar(%struct.A* %a)
33 ; Test behavior for unnamed argument without explicit alignment. In this case,
34 ; the first argument is referenced by the identifier %0 and the ABI requires a
35 ; minimum alignment of 4 bytes since struct.A contains i32s which have 4-byte
36 ; alignment. However, the alloca alignment will be 32 since that is the value
37 ; passed via the -asan-realign-stack option, which is greater than 4.
38 define void @baz(%struct.A* byval) sanitize_address {
41 ; CHECK: call i64 @__asan_stack_malloc
42 ; CHECK: alloca i8, i64 {{.*}} align 32
43 ; CHECK: [[copyPtr:%[^ \t]+]] = inttoptr i64 %{{[^ \t]+}} to %struct.A*
44 ; CHECK: [[copyBytePtr:%[^ \t]+]] = bitcast %struct.A* [[copyPtr]]
45 ; CHECK: [[aBytePtr:%[^ \t]+]] = bitcast %struct.A* %0
46 ; CHECK: call void @llvm.memcpy{{[^%]+}}[[copyBytePtr]]{{[^%]+}} align 4 [[aBytePtr]],{{[^,]+}}
47 ; CHECK: call i32 @bar(%struct.A* [[copyPtr]])
50 %call = call i32 @bar(%struct.A* %0)