1; RUN: opt < %s -argpromotion -S | FileCheck %s
2
3; Unused arguments from variadic functions cannot be eliminated as that changes
4; their classiciation according to the SysV amd64 ABI. Clang and other frontends
5; bake in the classification when they use things like byval, as in this test.
6
7target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
8target triple = "x86_64-unknown-linux-gnu"
9
10%struct.tt0 = type { i64, i64 }
11%struct.__va_list_tag = type { i32, i32, i8*, i8* }
12
13@t45 = internal global %struct.tt0 { i64 1335139741, i64 438042995 }, align 8
14
15; Function Attrs: nounwind uwtable
16define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 {
17entry:
18  tail call void (i8*, i8*, i8*, i8*, i8*, ...)* @callee_t0f(i8* undef, i8* undef, i8* undef, i8* undef, i8* undef, %struct.tt0* byval align 8 @t45)
19  ret i32 0
20}
21
22; Function Attrs: nounwind uwtable
23define internal void @callee_t0f(i8* nocapture readnone %tp13, i8* nocapture readnone %tp14, i8* nocapture readnone %tp15, i8* nocapture readnone %tp16, i8* nocapture readnone %tp17, ...) {
24entry:
25  ret void
26}
27
28; CHECK-LABEL: define internal void @callee_t0f(i8* nocapture readnone %tp13, i8* nocapture readnone %tp14, i8* nocapture readnone %tp15, i8* nocapture readnone %tp16, i8* nocapture readnone %tp17, ...)
29