llvm/test/CodeGen/X86/pr216504.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=+avx2 -verify-machineinstrs | FileCheck %s --check-prefix=X64
; RUN: llc < %s -mtriple=i686-unknown-linux-gnu -mattr=+avx2 -verify-machineinstrs | FileCheck %s --check-prefix=X86

; The variable-index extract needs a 32-byte aligned stack temporary, so the
; stack is realigned. The callee load from a local must not be folded into the
; tail call, which executes after the epilogue.

@g2 = global i16 0, align 2

define void @f25() nounwind {
; X64-LABEL: f25:
; X64:       # %bb.0: # %entry
; X64-NEXT:    pushq %rbp
; X64-NEXT:    movq %rsp, %rbp
; X64-NEXT:    andq $-32, %rsp
; X64-NEXT:    subq $96, %rsp
; X64-NEXT:    movq g2@GOTPCREL(%rip), %rax
; X64-NEXT:    movzwl (%rax), %ecx
; X64-NEXT:    andl $7, %ecx
; X64-NEXT:    vmovss {{.*#+}} xmm0 = [60,0,0,0]
; X64-NEXT:    vmovaps %ymm0, {{[0-9]+}}(%rsp)
; X64-NEXT:    movl 32(%rsp,%rcx,4), %ecx
; X64-NEXT:    movw %cx, (%rax)
; X64-NEXT:    movq {{[0-9]+}}(%rsp), %rax
; X64-NEXT:    movq %rbp, %rsp
; X64-NEXT:    popq %rbp
; X64-NEXT:    vzeroupper
; X64-NEXT:    jmpq *%rax # TAILCALL
;
; X86-LABEL: f25:
; X86:       # %bb.0: # %entry
; X86-NEXT:    pushl %ebp
; X86-NEXT:    movl %esp, %ebp
; X86-NEXT:    andl $-32, %esp
; X86-NEXT:    subl $96, %esp
; X86-NEXT:    movzwl g2, %eax
; X86-NEXT:    andl $7, %eax
; X86-NEXT:    vmovss {{.*#+}} xmm0 = [60,0,0,0]
; X86-NEXT:    vmovaps %ymm0, {{[0-9]+}}(%esp)
; X86-NEXT:    movl 32(%esp,%eax,4), %eax
; X86-NEXT:    movw %ax, g2
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl %ebp, %esp
; X86-NEXT:    popl %ebp
; X86-NEXT:    vzeroupper
; X86-NEXT:    jmpl *%eax # TAILCALL
entry:
  %fp5 = alloca ptr, align 8
  %0 = load i16, ptr @g2, align 2
  %vecext = extractelement <8 x i32> <i32 60, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0>, i16 %0
  %conv = trunc i32 %vecext to i16
  store i16 %conv, ptr @g2, align 2
  %fp = load volatile ptr, ptr %fp5, align 8
  tail call void %fp()
  ret void
}