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      1 ; RUN: llc -mtriple=x86_64-pc-linux -stackrealign -stack-alignment=32 < %s | FileCheck %s
      2 ; RUN: llc -mtriple=x86_64-pc-linux-gnux32 -stackrealign -stack-alignment=32 < %s | FileCheck -check-prefix=X32ABI %s
      3 ; This should run with NaCl as well ( -mtriple=x86_64-pc-nacl ) but currently doesn't due to PR22655
      4 
      5 ; Make sure the correct register gets set up as the base pointer
      6 ; This should be rbx for x64 and 64-bit NaCl and ebx for x32
      7 ; CHECK-LABEL: base
      8 ; CHECK: subq $32, %rsp
      9 ; CHECK: movq %rsp, %rbx
     10 ; X32ABI-LABEL: base
     11 ; X32ABI: subl $32, %esp
     12 ; X32ABI: movl %esp, %ebx
     13 ; NACL-LABEL: base
     14 ; NACL: subq $32, %rsp
     15 ; NACL: movq %rsp, %rbx
     16 
     17 declare i32 @helper() nounwind
     18 define void @base() #0 {
     19 entry:
     20   %k = call i32 @helper()
     21   %a = alloca i32, i32 %k, align 4
     22   store i32 0, i32* %a, align 4
     23   ret void
     24 }
     25 
     26 attributes #0 = { nounwind uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"}
     27