llvm/test/CodeGen/X86/hipe-cc64.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -stack-symbol-ordering=0 -tailcallopt -relocation-model=static -code-model=medium -mtriple=x86_64-linux-gnu -mcpu=opteron | FileCheck %s

; Check the HiPE calling convention works (x86-64)

define void @zap(i64 %a, i64 %b) nounwind {
; CHECK-LABEL: zap:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    pushq %rbp
; CHECK-NEXT:    pushq %r15
; CHECK-NEXT:    pushq %r14
; CHECK-NEXT:    pushq %r13
; CHECK-NEXT:    pushq %r12
; CHECK-NEXT:    pushq %rbx
; CHECK-NEXT:    movq %rsi, %rdx
; CHECK-NEXT:    movl $8, %ecx
; CHECK-NEXT:    movl $9, %r8d
; CHECK-NEXT:    movq %rdi, %rsi
; CHECK-NEXT:    callq addfour@PLT
; CHECK-NEXT:    movl $1, %edx
; CHECK-NEXT:    movl $2, %ecx
; CHECK-NEXT:    movl $3, %r8d
; CHECK-NEXT:    movq %rax, %r9
; CHECK-NEXT:    callq foo@PLT
; CHECK-NEXT:    popq %rbx
; CHECK-NEXT:    popq %r12
; CHECK-NEXT:    popq %r13
; CHECK-NEXT:    popq %r14
; CHECK-NEXT:    popq %r15
; CHECK-NEXT:    popq %rbp
; CHECK-NEXT:    retq
entry:
  %0 = call cc 11 {i64, i64, i64} @addfour(i64 undef, i64 undef, i64 %a, i64 %b, i64 8, i64 9)
  %res = extractvalue {i64, i64, i64} %0, 2

  tail call void @foo(i64 undef, i64 undef, i64 1, i64 2, i64 3, i64 %res) nounwind
  ret void
}

define cc 11 {i64, i64, i64} @addfour(i64 %hp, i64 %p, i64 %x, i64 %y, i64 %z, i64 %w) nounwind {
; CHECK-LABEL: addfour:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addq %rsi, %rdx
; CHECK-NEXT:    leaq (%rcx,%r8), %rax
; CHECK-NEXT:    addq %rdx, %rax
; CHECK-NEXT:    retq
entry:
  %0 = add i64 %x, %y
  %1 = add i64 %0, %z
  %2 = add i64 %1, %w

  %res = insertvalue {i64, i64, i64} undef, i64 %2, 2
  ret {i64, i64, i64} %res
}

define cc 11 void @foo(i64 %hp, i64 %p, i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3) nounwind {
; CHECK-LABEL: foo:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    subq $48, %rsp
; CHECK-NEXT:    movq %r15, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq %rbp, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq %rsi, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq %rdx, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq %rcx, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq %r8, (%rsp)
; CHECK-NEXT:    addq $48, %rsp
; CHECK-NEXT:    jmp bar@PLT # TAILCALL
entry:
  %hp_var   = alloca i64
  %p_var    = alloca i64
  %arg0_var = alloca i64
  %arg1_var = alloca i64
  %arg2_var = alloca i64
  %arg3_var = alloca i64
  store i64 %hp, ptr %hp_var
  store i64 %p, ptr %p_var
  store i64 %arg0, ptr %arg0_var
  store i64 %arg1, ptr %arg1_var
  store i64 %arg2, ptr %arg2_var
  store i64 %arg3, ptr %arg3_var

  ; Loads are reading values just writen from corresponding register and are therefore noops.
  %0 = load i64, ptr %hp_var
  %1 = load i64, ptr %p_var
  %2 = load i64, ptr %arg0_var
  %3 = load i64, ptr %arg1_var
  %4 = load i64, ptr %arg2_var
  %5 = load i64, ptr %arg3_var
  tail call cc 11 void @bar(i64 %0, i64 %1, i64 %2, i64 %3, i64 %4, i64 %5) nounwind
  ret void
}

define cc 11 void @baz() nounwind {
; CHECK-LABEL: baz:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movq clos@GOTPCREL(%rip), %rax
; CHECK-NEXT:    movl $42, %esi
; CHECK-NEXT:    jmpq *(%rax) # TAILCALL
  %tmp_clos = load i64, ptr @clos
  %tmp_clos2 = inttoptr i64 %tmp_clos to ptr
  tail call cc 11 void %tmp_clos2(i64 undef, i64 undef, i64 42) nounwind
  ret void
}

; Sanity-check the tail call sequence. Number of arguments was chosen as to
; expose a bug where the tail call sequence clobbered the stack.
define cc 11 { i64, i64, i64 } @tailcaller(i64 %hp, i64 %p) #0 {
; CHECK-LABEL: tailcaller:
; CHECK:       # %bb.0:
; CHECK-NEXT:    subq $16, %rsp
; CHECK-NEXT:    .cfi_def_cfa_offset 24
; CHECK-NEXT:    movq {{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    movq %rax, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq $79, {{[0-9]+}}(%rsp)
; CHECK-NEXT:    movl $15, %esi
; CHECK-NEXT:    movl $31, %edx
; CHECK-NEXT:    movl $47, %ecx
; CHECK-NEXT:    movl $63, %r8d
; CHECK-NEXT:    popq %rax
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    jmp tailcallee@PLT # TAILCALL
  %ret = tail call cc11 { i64, i64, i64 } @tailcallee(i64 %hp, i64 %p, i64 15,
     i64 31, i64 47, i64 63, i64 79) #1
  ret { i64, i64, i64 } %ret
}

!hipe.literals = !{ !0, !1, !2 }
!0 = !{ !"P_NSP_LIMIT", i32 160 }
!1 = !{ !"X86_LEAF_WORDS", i32 24 }
!2 = !{ !"AMD64_LEAF_WORDS", i32 24 }
@clos = external constant i64
declare cc 11 void @bar(i64, i64, i64, i64, i64, i64)
declare cc 11 { i64, i64, i64 } @tailcallee(i64, i64, i64, i64, i64, i64, i64)
!llvm.module.flags = !{!3}
!3 = !{i32 2, !"override-stack-alignment", i32 8}