| ; RUN: llc < %s -mtriple=x86_64_lfi | FileCheck %s |
| |
| ; LFI reserves %r11. For indirect vararg tail calls that consume all six |
| ; argument GPRs, the function pointer would normally be loaded into %r11. With |
| ; %r11 reserved there is no free register for the call target, so sibling-call |
| ; optimization must be disabled. |
| |
| define void @caller6_indirect_vararg(ptr %fn, i64 %a, i64 %b, i64 %c, i64 %d, i64 %e, i64 %f) { |
| ; CHECK-LABEL: caller6_indirect_vararg: |
| ; CHECK: callq * |
| ; CHECK-NOT: TAILCALL |
| tail call void (i64, i64, i64, i64, i64, i64, ...) %fn(i64 %a, i64 %b, i64 %c, i64 %d, i64 %e, i64 %f) |
| ret void |
| } |
| |
| define void @caller5_indirect_vararg(ptr %fn, i64 %a, i64 %b, i64 %c, i64 %d, i64 %e) { |
| ; CHECK-LABEL: caller5_indirect_vararg: |
| ; CHECK: jmpq *{{.*}} # TAILCALL |
| tail call void (i64, i64, i64, i64, i64, ...) %fn(i64 %a, i64 %b, i64 %c, i64 %d, i64 %e) |
| ret void |
| } |
