test/CodeGen/X86/hipe-cc.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -stack-symbol-ordering=0 -tailcallopt -code-model=medium -mtriple=i686-linux-gnu -mcpu=pentium | FileCheck %s

; Check the HiPE calling convention works (x86-32)

define void @zap(i32 %a, i32 %b) nounwind {
; CHECK-LABEL: zap:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    pushl %ebp
; CHECK-NEXT:    pushl %ebx
; CHECK-NEXT:    pushl %edi
; CHECK-NEXT:    pushl %esi
; CHECK-NEXT:    subl $20, %esp
; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT:    movl $8, %ecx
; CHECK-NEXT:    calll addfour@PLT
; CHECK-NEXT:    movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl $2, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl $1, {{[0-9]+}}(%esp)
; CHECK-NEXT:    calll foo@PLT
; CHECK-NEXT:    addl $20, %esp
; CHECK-NEXT:    popl %esi
; CHECK-NEXT:    popl %edi
; CHECK-NEXT:    popl %ebx
; CHECK-NEXT:    popl %ebp
; CHECK-NEXT:    retl
entry:
  %0 = call cc 11 {i32, i32, i32} @addfour(i32 undef, i32 undef, i32 %a, i32 %b, i32 8)
  %res = extractvalue {i32, i32, i32} %0, 2

  tail call void @foo(i32 undef, i32 undef, i32 1, i32 2, i32 %res) nounwind
  ret void
}

define cc 11 {i32, i32, i32} @addfour(i32 %hp, i32 %p, i32 %x, i32 %y, i32 %z) nounwind {
; CHECK-LABEL: addfour:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addl %edx, %eax
; CHECK-NEXT:    addl %ecx, %eax
; CHECK-NEXT:    retl
entry:
  %0 = add i32 %x, %y
  %1 = add i32 %0, %z

  %res = insertvalue {i32, i32, i32} undef, i32 %1, 2
  ret {i32, i32, i32} %res
}

define cc 11 void @foo(i32 %hp, i32 %p, i32 %arg0, i32 %arg1, i32 %arg2) nounwind {
; CHECK-LABEL: foo:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    subl $20, %esp
; CHECK-NEXT:    movl %esi, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl %ebp, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl %edx, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl %ecx, (%esp)
; CHECK-NEXT:    addl $20, %esp
; CHECK-NEXT:    jmp bar@PLT # TAILCALL
entry:
  %hp_var   = alloca i32
  %p_var    = alloca i32
  %arg0_var = alloca i32
  %arg1_var = alloca i32
  %arg2_var = alloca i32
  store i32 %hp, ptr %hp_var
  store i32 %p, ptr %p_var
  store i32 %arg0, ptr %arg0_var
  store i32 %arg1, ptr %arg1_var
  store i32 %arg2, ptr %arg2_var
  ; These loads are loading the values from their previous stores and are optimized away.
  %0 = load i32, ptr %hp_var
  %1 = load i32, ptr %p_var
  %2 = load i32, ptr %arg0_var
  %3 = load i32, ptr %arg1_var
  %4 = load i32, ptr %arg2_var
  tail call cc 11 void @bar(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4) nounwind
  ret void
}

define cc 11 void @baz() nounwind {
; CHECK-LABEL: baz:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl $42, %eax
; CHECK-NEXT:    jmpl *clos # TAILCALL
  %tmp_clos = load i32, ptr @clos
  %tmp_clos2 = inttoptr i32 %tmp_clos to ptr
  tail call cc 11 void %tmp_clos2(i32 undef, i32 undef, i32 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 { i32, i32, i32 } @tailcaller(i32 %hp, i32 %p) nounwind {
; CHECK-LABEL: tailcaller:
; CHECK:       # %bb.0:
; CHECK-NEXT:    subl $8, %esp
; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT:    movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl $63, {{[0-9]+}}(%esp)
; CHECK-NEXT:    movl $15, %eax
; CHECK-NEXT:    movl $31, %edx
; CHECK-NEXT:    movl $47, %ecx
; CHECK-NEXT:    popl %edi
; CHECK-NEXT:    jmp tailcallee@PLT # TAILCALL
  %ret = tail call cc11 { i32, i32, i32 } @tailcallee(i32 %hp, i32 %p, i32 15,
     i32 31, i32 47, i32 63) nounwind
  ret { i32, i32, i32 } %ret
}

!hipe.literals = !{ !0, !1, !2 }
!0 = !{ !"P_NSP_LIMIT", i32 84 }
!1 = !{ !"X86_LEAF_WORDS", i32 24 }
!2 = !{ !"AMD64_LEAF_WORDS", i32 24 }
@clos = external dso_local constant i32
declare cc 11 void @bar(i32, i32, i32, i32, i32)
declare cc 11 { i32, i32, i32 } @tailcallee(i32, i32, i32, i32, i32, i32)

!llvm.module.flags = !{!3}
!3 = !{i32 2, !"override-stack-alignment", i32 4}