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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes2; RUN: opt < %s -passes=argpromotion -S | FileCheck %s3 4; Unused arguments from variadic functions cannot be eliminated as that changes5; their classiciation according to the SysV amd64 ABI. Clang and other frontends6; bake in the classification when they use things like byval, as in this test.7 8target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"9target triple = "x86_64-unknown-linux-gnu"10 11%struct.tt0 = type { i64, i64 }12%struct.__va_list_tag = type { i32, i32, ptr, ptr }13 14@t45 = internal global %struct.tt0 { i64 1335139741, i64 438042995 }, align 815 16; Function Attrs: nounwind uwtable17define i32 @main(i32 %argc, ptr nocapture readnone %argv) #0 {18; CHECK-LABEL: define {{[^@]+}}@main19; CHECK-SAME: (i32 [[ARGC:%.*]], ptr readnone captures(none) [[ARGV:%.*]]) {20; CHECK-NEXT: entry:21; CHECK-NEXT: tail call void (ptr, ptr, ptr, ptr, ptr, ...) @callee_t0f(ptr poison, ptr poison, ptr poison, ptr poison, ptr poison, ptr byval([[STRUCT_TT0:%.*]]) align 8 @t45)22; CHECK-NEXT: ret i32 023;24entry:25 tail call void (ptr, ptr, ptr, ptr, ptr, ...) @callee_t0f(ptr poison, ptr poison, ptr poison, ptr poison, ptr poison, ptr byval(%struct.tt0) align 8 @t45)26 ret i32 027}28 29; Function Attrs: nounwind uwtable30define internal void @callee_t0f(ptr nocapture readnone %tp13, ptr nocapture readnone %tp14, ptr nocapture readnone %tp15, ptr nocapture readnone %tp16, ptr nocapture readnone %tp17, ...) {31; CHECK-LABEL: define {{[^@]+}}@callee_t0f32; CHECK-SAME: (ptr readnone captures(none) [[TP13:%.*]], ptr readnone captures(none) [[TP14:%.*]], ptr readnone captures(none) [[TP15:%.*]], ptr readnone captures(none) [[TP16:%.*]], ptr readnone captures(none) [[TP17:%.*]], ...) {33; CHECK-NEXT: entry:34; CHECK-NEXT: ret void35;36entry:37 ret void38}39