1; RUN: llc -march=hexagon -mcpu=hexagonv65 < %s | FileCheck %s
2; REQUIRES: hexagon
3
4; C file was:
5; struct S { int a[3];};
6; void foo(int x, struct S arg1, struct S arg2);
7; void bar() {
8;  struct S s;
9;  s.a[0] = 9;
10;  foo(42, s, s);
11; }
12
13; Test that while passing a 12-byte struct on the stack, the
14; struct is aligned to 4 bytes since its largest member is of type int.
15; Previously, the struct was being aligned to 8 bytes
16
17; CHECK: memw(r{{[0-9]+}}+#12) = #9
18
19; Check that the flag hexagon-disable-args-min-alignment works and the struct
20; is aligned to 8 bytes.
21; RUN: llc -march=hexagon -mcpu=hexagonv65 -hexagon-disable-args-min-alignment < %s | FileCheck -check-prefix=HEXAGON_LEGACY %s
22
23; HEXAGON_LEGACY: memw(r{{[0-9]+}}+#16) = #9
24
25%struct.S = type { [3 x i32] }
26
27; Function Attrs: nounwind
28define dso_local void @bar() local_unnamed_addr #0 {
29entry:
30  %s = alloca %struct.S, align 4
31  %0 = bitcast %struct.S* %s to i8*
32  call void @llvm.lifetime.start.p0i8(i64 12, i8* nonnull %0) #3
33  %arrayidx = getelementptr inbounds %struct.S, %struct.S* %s, i32 0, i32 0, i32 0
34  store i32 9, i32* %arrayidx, align 4
35  tail call void @foo(i32 42, %struct.S* nonnull byval(%struct.S) align 4 %s, %struct.S* nonnull byval(%struct.S) align 4 %s) #3
36  call void @llvm.lifetime.end.p0i8(i64 12, i8* nonnull %0) #3
37  ret void
38}
39
40; Function Attrs: argmemonly nounwind willreturn
41declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
42
43declare dso_local void @foo(i32, %struct.S* byval(%struct.S) align 4, %struct.S* byval(%struct.S) align 4) local_unnamed_addr #2
44
45; Function Attrs: argmemonly nounwind willreturn
46declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
47