llvm/test/CodeGen/SPARC/zerostructcall.ll
Chris Dewhurst c958a733af [Sparc] Allow passing of empty structs.
Passing an empty struct as a function call argument is now supported.

unit tests for various scenarios added.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271374 91177308-0d34-0410-b5e6-96231b3b80d8
2016-06-01 08:48:56 +00:00

52 lines
1.3 KiB
LLVM

; RUN: llc < %s -march=sparc | FileCheck %s
; CHECK-LABEL: struct_ptr_test
; CHECK: call struct_ptr_fn
; CHECK-NEXT: st %i0, [%fp+-4]
; CHECK-NEXT: ret
%struct.S = type {}
define void @struct_ptr_test(i32 %i) {
entry:
%i.addr = alloca i32, align 4
store i32 %i, i32* %i.addr, align 4
%0 = bitcast i32* %i.addr to %struct.S*
call void @struct_ptr_fn(%struct.S* byval align 1 %0)
ret void
}
declare void @struct_ptr_fn(%struct.S* byval align 1)
; CHECK-LABEL: struct_test
; CHECK: call struct_fn
; CHECK-NEXT: nop
; CHECK-NEXT: ret
%struct.U = type {}
@a = internal global [1 x %struct.U] zeroinitializer, align 1
define void @struct_test() {
entry:
tail call void @struct_fn(%struct.U* byval align 1 getelementptr inbounds ([1 x %struct.U], [1 x %struct.U]* @a, i32 0, i32 0))
ret void
}
; CHECK-LABEL: struct_arg_test
; CHECK: call struct_arg_fn
; CHECK-NEXT: nop
; CHECK-NEXT: ret
declare void @struct_fn(%struct.U* byval align 1)
@b = internal global [1 x %struct.U] zeroinitializer, align 1
define void @struct_arg_test() {
entry:
tail call void @struct_arg_fn(%struct.U* byval align 1 getelementptr inbounds ([1 x %struct.U], [1 x %struct.U]* @b, i32 0, i32 0))
ret void
}
declare void @struct_arg_fn(%struct.U* byval align 1)