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