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llvm/llvm/test/CodeGen/X86/preserve_nonecc64.ll 

; RUN: sed -e "s/RETTYPE/void/;s/RETVAL//" %s | llc -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck --check-prefixes=ALL %s
; RUN: sed -e "s/RETTYPE/i32/;s/RETVAL/undef/" %s | llc -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck --check-prefixes=ALL %s
; RUN: sed -e "s/RETTYPE/\{i64\,i64\}/;s/RETVAL/undef/" %s | llc -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck --check-prefixes=ALL %s
;
; RUN: sed -e "s/RETTYPE/void/;s/RETVAL//" %s | llc -mtriple=x86_64-apple-darwin -mcpu=corei7-avx | FileCheck --check-prefixes=ALL %s
; RUN: sed -e "s/RETTYPE/i32/;s/RETVAL/undef/" %s | llc -mtriple=x86_64-apple-darwin -mcpu=corei7-avx | FileCheck --check-prefixes=ALL %s
; RUN: sed -e "s/RETTYPE/\{i64\,i64\}/;s/RETVAL/undef/" %s | llc -mtriple=x86_64-apple-darwin -mcpu=corei7-avx | FileCheck --check-prefixes=ALL %s

; We don't need to save registers before using them inside preserve_none function.
define preserve_nonecc RETTYPE @preserve_nonecc1(i64, i64, double, double) nounwind {
entry:
;ALL-LABEL:   preserve_nonecc1
;ALL:         pushq %rbp
;ALL-NEXT:    InlineAsm Start
;ALL-NEXT:    InlineAsm End
;ALL-NEXT:    popq %rbp
;ALL-NEXT:    retq
  call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{rbp},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15}"()
  ret RETTYPE RETVAL
}

; When calling a preserve_none function, all live registers must be saved and
; restored around the function call.
declare preserve_nonecc RETTYPE @bar(i64, i64, double, double)
define void @preserve_nonecc2() nounwind {
entry:
;ALL-LABEL: preserve_nonecc2
;ALL:       movq %rax
;ALL:       movq %rdx
;ALL:       movq %r11
;ALL:       movaps %xmm2
;ALL:       movaps %xmm3
;ALL:       movaps %xmm4
;ALL:       movaps %xmm5
;ALL:       movaps %xmm6
;ALL:       movaps %xmm7
;ALL:       movaps %xmm8
;ALL:       movaps %xmm9
;ALL:       movaps %xmm10
;ALL:       movaps %xmm11
;ALL:       movaps %xmm12
;ALL:       movaps %xmm13
;ALL:       movaps %xmm14
;ALL:       movaps %xmm15
;ALL:       movq {{.*}}, %rax
;ALL:       movq {{.*}}, %rdx
;ALL:       movq {{.*}}, %r11
;ALL:       movaps {{.*}} %xmm2
;ALL:       movaps {{.*}} %xmm3
;ALL:       movaps {{.*}} %xmm4
;ALL:       movaps {{.*}} %xmm5
;ALL:       movaps {{.*}} %xmm6
;ALL:       movaps {{.*}} %xmm7
;ALL:       movaps {{.*}} %xmm8
;ALL:       movaps {{.*}} %xmm9
;ALL:       movaps {{.*}} %xmm10
;ALL:       movaps {{.*}} %xmm11
;ALL:       movaps {{.*}} %xmm12
;ALL:       movaps {{.*}} %xmm13
;ALL:       movaps {{.*}} %xmm14
;ALL:       movaps {{.*}} %xmm15
  %a0 = call i64 asm sideeffect "", "={rax}"() nounwind
  %a1 = call i64 asm sideeffect "", "={rcx}"() nounwind
  %a2 = call i64 asm sideeffect "", "={rdx}"() nounwind
  %a3 = call i64 asm sideeffect "", "={r8}"() nounwind
  %a4 = call i64 asm sideeffect "", "={r9}"() nounwind
  %a5 = call i64 asm sideeffect "", "={r10}"() nounwind
  %a6 = call i64 asm sideeffect "", "={r11}"() nounwind
  %a10 = call <2 x double> asm sideeffect "", "={xmm2}"() nounwind
  %a11 = call <2 x double> asm sideeffect "", "={xmm3}"() nounwind
  %a12 = call <2 x double> asm sideeffect "", "={xmm4}"() nounwind
  %a13 = call <2 x double> asm sideeffect "", "={xmm5}"() nounwind
  %a14 = call <2 x double> asm sideeffect "", "={xmm6}"() nounwind
  %a15 = call <2 x double> asm sideeffect "", "={xmm7}"() nounwind
  %a16 = call <2 x double> asm sideeffect "", "={xmm8}"() nounwind
  %a17 = call <2 x double> asm sideeffect "", "={xmm9}"() nounwind
  %a18 = call <2 x double> asm sideeffect "", "={xmm10}"() nounwind
  %a19 = call <2 x double> asm sideeffect "", "={xmm11}"() nounwind
  %a20 = call <2 x double> asm sideeffect "", "={xmm12}"() nounwind
  %a21 = call <2 x double> asm sideeffect "", "={xmm13}"() nounwind
  %a22 = call <2 x double> asm sideeffect "", "={xmm14}"() nounwind
  %a23 = call <2 x double> asm sideeffect "", "={xmm15}"() nounwind
  call preserve_nonecc RETTYPE @bar(i64 1, i64 2, double 3.0, double 4.0)
  call void asm sideeffect "", "{rax},{rcx},{rdx},{r8},{r9},{r10},{r11},{xmm2},{xmm3},{xmm4},{xmm5},{xmm6},{xmm7},{xmm8},{xmm9},{xmm10},{xmm11},{xmm12},{xmm13},{xmm14},{xmm15}"(i64 %a0, i64 %a1, i64 %a2, i64 %a3, i64 %a4, i64 %a5, i64 %a6, <2 x double> %a10, <2 x double> %a11, <2 x double> %a12, <2 x double> %a13, <2 x double> %a14, <2 x double> %a15, <2 x double> %a16, <2 x double> %a17, <2 x double> %a18, <2 x double> %a19, <2 x double> %a20, <2 x double> %a21, <2 x double> %a22, <2 x double> %a23)
  ret void
}