llvm/test/CodeGen/X86/apx/pp2-with-stack-clash-protection.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mtriple=x86_64 -mattr=+push2pop2 | FileCheck %s


; This test is to check if "pushq %rax" is emitted correctly for push2pop2
; padding when it's built with -stack-clash-protection option.

define i32 @foo(ptr %src1, i32 %len, ptr %src2, ptr %dst, i1 %cmp, i32 %sub) #0 {
; CHECK-LABEL: foo:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    pushq %rax
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    push2 %r15, %rbp
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    push2 %r13, %r14
; CHECK-NEXT:    .cfi_def_cfa_offset 48
; CHECK-NEXT:    push2 %rbx, %r12
; CHECK-NEXT:    .cfi_def_cfa_offset 64
; CHECK-NEXT:    subq $16, %rsp
; CHECK-NEXT:    .cfi_def_cfa_offset 80
; CHECK-NEXT:    .cfi_offset %rbx, -64
; CHECK-NEXT:    .cfi_offset %r12, -56
; CHECK-NEXT:    .cfi_offset %r13, -48
; CHECK-NEXT:    .cfi_offset %r14, -40
; CHECK-NEXT:    .cfi_offset %r15, -32
; CHECK-NEXT:    .cfi_offset %rbp, -24
; CHECK-NEXT:    movl %r9d, {{[-0-9]+}}(%r{{[sb]}}p) # 4-byte Spill
; CHECK-NEXT:    movl %r8d, %ebp
; CHECK-NEXT:    movq %rcx, %r14
; CHECK-NEXT:    movq %rdx, %r15
; CHECK-NEXT:    movl %esi, %r12d
; CHECK-NEXT:    movq %rdi, %r13
; CHECK-NEXT:    xorl %ebx, %ebx
; CHECK-NEXT:    .p2align 4
; CHECK-NEXT:  .LBB0_1: # %while.body
; CHECK-NEXT:    # =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    movq %r15, %rdi
; CHECK-NEXT:    movq %r13, %rsi
; CHECK-NEXT:    movq %r14, %rdx
; CHECK-NEXT:    xorl %ecx, %ecx
; CHECK-NEXT:    movl %r12d, %r8d
; CHECK-NEXT:    callq *%rbx
; CHECK-NEXT:    testb $1, %bpl
; CHECK-NEXT:    jne .LBB0_1
; CHECK-NEXT:  # %bb.2: # %while.end
; CHECK-NEXT:    movl {{[-0-9]+}}(%r{{[sb]}}p), %eax # 4-byte Reload
; CHECK-NEXT:    addq $16, %rsp
; CHECK-NEXT:    .cfi_def_cfa_offset 64
; CHECK-NEXT:    pop2 %r12, %rbx
; CHECK-NEXT:    .cfi_def_cfa_offset 48
; CHECK-NEXT:    pop2 %r14, %r13
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    pop2 %rbp, %r15
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    popq %rcx
; CHECK-NEXT:    .cfi_def_cfa_offset 8
; CHECK-NEXT:    retq
entry:
  br label %while.body

while.body:                                       ; preds = %while.body, %entry
  %call5 = tail call i32 null(ptr %src2, ptr %src1, ptr %dst, i32 0, i32 %len)
  br i1 %cmp, label %while.body, label %while.end

while.end:                                        ; preds = %while.body
  ret i32 %sub
}

attributes #0 = { "probe-stack"="inline-asm"}