mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-28 15:33:16 +00:00
39 lines
1.2 KiB
LLVM
39 lines
1.2 KiB
LLVM
|
; RUN: opt < %s -deadargelim -S | FileCheck %s
|
||
|
|
|
||
|
|
declare void @llvm.va_start(i8*)
|
||
|
|
|
||
|
|
define internal i32 @va_func(i32 %a, i32 %b, ...) {
|
||
|
|
%valist = alloca i8
|
||
|
|
call void @llvm.va_start(i8* %valist)
|
||
|
|
|
||
|
|
ret i32 %b
|
||
|
|
}
|
||
|
|
|
||
|
|
; Function derived from AArch64 ABI, where 8 integer arguments go in
|
||
|
|
; registers but the 9th goes on the stack. We really don't want to put
|
||
|
|
; just 7 args in registers and then start on the stack since any
|
||
|
|
; va_arg implementation already present in va_func won't be expecting
|
||
|
|
; it.
|
||
|
|
define i32 @call_va(i32 %in) {
|
||
|
|
%stacked = alloca i32
|
||
|
|
store i32 42, i32* %stacked
|
||
|
|
%res = call i32(i32, i32, ...)* @va_func(i32 %in, i32 %in, [6 x i32] undef, i32* byval %stacked)
|
||
|
|
ret i32 %res
|
||
|
|
; CHECK: call i32 (i32, i32, ...)* @va_func(i32 undef, i32 %in, [6 x i32] undef, i32* byval %stacked)
|
||
|
|
}
|
||
|
|
|
||
|
|
define internal i32 @va_deadret_func(i32 %a, i32 %b, ...) {
|
||
|
|
%valist = alloca i8
|
||
|
|
call void @llvm.va_start(i8* %valist)
|
||
|
|
|
||
|
|
ret i32 %a
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @call_deadret(i32 %in) {
|
||
|
|
%stacked = alloca i32
|
||
|
|
store i32 42, i32* %stacked
|
||
|
|
call i32 (i32, i32, ...)* @va_deadret_func(i32 undef, i32 %in, [6 x i32] undef, i32* byval %stacked)
|
||
|
|
ret void
|
||
|
|
; CHECK: call void (i32, i32, ...)* @va_deadret_func(i32 undef, i32 undef, [6 x i32] undef, i32* byval %stacked)
|
||
|
|
}
|