abi-padding-2.ll
1.34 KB
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; RUN: llc -march=hexagon -mcpu=hexagonv65 < %s | FileCheck %s
; REQUIRES: hexagon
; C file was:
; struct S { char b; long long a; };
; void foo(int x, struct S arg1);
; void bar() {
; struct S s;
; s.b = 'a';
; foo(42, s);
;}
;
; Test that while passing a 7-byte struct on the stack, the
; size of the struct is 16 bytes including padding since its
; largest member is of type long long. This was being handled
; correctly but is a sanity check against any potential future
; regressions.
;
; CHECK: memd(r{{[0-9]+}}+#8) =
; CHECK: memd(r{{[0-9]+}}+#0) =
%struct.S = type { i8, i64 }
; Function Attrs: nounwind
define dso_local void @bar() local_unnamed_addr #0 {
entry:
%s = alloca %struct.S, align 8
%0 = getelementptr inbounds %struct.S, %struct.S* %s, i32 0, i32 0
call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0) #3
store i8 97, i8* %0, align 8
tail call void @foo(i32 42, %struct.S* nonnull byval(%struct.S) align 8 %s) #3
call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0) #3
ret void
}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
declare dso_local void @foo(i32, %struct.S* byval(%struct.S) align 8) local_unnamed_addr #2
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1