llvm-project/llvm/test/CodeGen/X86/scalar-int-to-fp.ll

917 lines
29 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=+avx512f,+avx512dq,+avx512vl | FileCheck %s --check-prefixes=CHECK,CHECK32,AVX512_32,AVX512DQVL_32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+avx512dq,+avx512vl | FileCheck %s --check-prefixes=CHECK,CHECK64,AVX512_64,AVX512DQVL_64
; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=+avx512f,+avx512dq | FileCheck %s --check-prefixes=CHECK,CHECK32,AVX512_32,AVX512DQ_32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+avx512dq | FileCheck %s --check-prefixes=CHECK,CHECK64,AVX512_64,AVX512DQ_64
; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK,CHECK32,AVX512_32,AVX512F_32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK,CHECK64,AVX512_64,AVX512F_64
; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=CHECK,CHECK32,SSE2_32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=CHECK,CHECK64,SSE2_64
; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=-sse | FileCheck %s --check-prefixes=CHECK,CHECK32,X87
; Verify that scalar integer conversions to FP compile successfully
; (at one time long double failed with avx512f), and that reasonable
; instruction sequences are selected based on subtarget features.
define float @u32_to_f(i32 %a) nounwind {
; AVX512_32-LABEL: u32_to_f:
; AVX512_32: # %bb.0:
; AVX512_32-NEXT: pushl %eax
; AVX512_32-NEXT: vcvtusi2ssl {{[0-9]+}}(%esp), %xmm0, %xmm0
; AVX512_32-NEXT: vmovss %xmm0, (%esp)
; AVX512_32-NEXT: flds (%esp)
; AVX512_32-NEXT: popl %eax
; AVX512_32-NEXT: retl
;
; AVX512_64-LABEL: u32_to_f:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtusi2ssl %edi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; SSE2_32-LABEL: u32_to_f:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %eax
; SSE2_32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; SSE2_32-NEXT: movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
; SSE2_32-NEXT: orpd %xmm0, %xmm1
; SSE2_32-NEXT: subsd %xmm0, %xmm1
; SSE2_32-NEXT: xorps %xmm0, %xmm0
; SSE2_32-NEXT: cvtsd2ss %xmm1, %xmm0
; SSE2_32-NEXT: movss %xmm0, (%esp)
; SSE2_32-NEXT: flds (%esp)
; SSE2_32-NEXT: popl %eax
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: u32_to_f:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: movl %edi, %eax
; SSE2_64-NEXT: cvtsi2ssq %rax, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: u32_to_f:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $8, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: movl $0, {{[0-9]+}}(%esp)
; X87-NEXT: fildll (%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%r = uitofp i32 %a to float
ret float %r
}
define float @s32_to_f(i32 %a) nounwind {
; AVX512_32-LABEL: s32_to_f:
; AVX512_32: # %bb.0:
; AVX512_32-NEXT: pushl %eax
; AVX512_32-NEXT: vcvtsi2ssl {{[0-9]+}}(%esp), %xmm0, %xmm0
; AVX512_32-NEXT: vmovss %xmm0, (%esp)
; AVX512_32-NEXT: flds (%esp)
; AVX512_32-NEXT: popl %eax
; AVX512_32-NEXT: retl
;
; AVX512_64-LABEL: s32_to_f:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtsi2ssl %edi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; SSE2_32-LABEL: s32_to_f:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %eax
; SSE2_32-NEXT: cvtsi2ssl {{[0-9]+}}(%esp), %xmm0
; SSE2_32-NEXT: movss %xmm0, (%esp)
; SSE2_32-NEXT: flds (%esp)
; SSE2_32-NEXT: popl %eax
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: s32_to_f:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: cvtsi2ssl %edi, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: s32_to_f:
; X87: # %bb.0:
; X87-NEXT: pushl %eax
; X87-NEXT: movl {{[0-9]+}}(%esp), %eax
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: fildl (%esp)
; X87-NEXT: popl %eax
; X87-NEXT: retl
%r = sitofp i32 %a to float
ret float %r
}
define double @u32_to_d(i32 %a) nounwind {
; AVX512_32-LABEL: u32_to_d:
; AVX512_32: # %bb.0:
; AVX512_32-NEXT: pushl %ebp
; AVX512_32-NEXT: movl %esp, %ebp
; AVX512_32-NEXT: andl $-8, %esp
; AVX512_32-NEXT: subl $8, %esp
; AVX512_32-NEXT: vcvtusi2sdl 8(%ebp), %xmm0, %xmm0
; AVX512_32-NEXT: vmovsd %xmm0, (%esp)
; AVX512_32-NEXT: fldl (%esp)
; AVX512_32-NEXT: movl %ebp, %esp
; AVX512_32-NEXT: popl %ebp
; AVX512_32-NEXT: retl
;
; AVX512_64-LABEL: u32_to_d:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtusi2sdl %edi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; SSE2_32-LABEL: u32_to_d:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $8, %esp
; SSE2_32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; SSE2_32-NEXT: movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
; SSE2_32-NEXT: orpd %xmm0, %xmm1
; SSE2_32-NEXT: subsd %xmm0, %xmm1
; SSE2_32-NEXT: movsd %xmm1, (%esp)
; SSE2_32-NEXT: fldl (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: u32_to_d:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: movl %edi, %eax
; SSE2_64-NEXT: cvtsi2sdq %rax, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: u32_to_d:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $8, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: movl $0, {{[0-9]+}}(%esp)
; X87-NEXT: fildll (%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%r = uitofp i32 %a to double
ret double %r
}
define double @s32_to_d(i32 %a) nounwind {
; AVX512_32-LABEL: s32_to_d:
; AVX512_32: # %bb.0:
; AVX512_32-NEXT: pushl %ebp
; AVX512_32-NEXT: movl %esp, %ebp
; AVX512_32-NEXT: andl $-8, %esp
; AVX512_32-NEXT: subl $8, %esp
; AVX512_32-NEXT: vcvtsi2sdl 8(%ebp), %xmm0, %xmm0
; AVX512_32-NEXT: vmovsd %xmm0, (%esp)
; AVX512_32-NEXT: fldl (%esp)
; AVX512_32-NEXT: movl %ebp, %esp
; AVX512_32-NEXT: popl %ebp
; AVX512_32-NEXT: retl
;
; AVX512_64-LABEL: s32_to_d:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtsi2sdl %edi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; SSE2_32-LABEL: s32_to_d:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $8, %esp
; SSE2_32-NEXT: cvtsi2sdl 8(%ebp), %xmm0
; SSE2_32-NEXT: movsd %xmm0, (%esp)
; SSE2_32-NEXT: fldl (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: s32_to_d:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: cvtsi2sdl %edi, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: s32_to_d:
; X87: # %bb.0:
; X87-NEXT: pushl %eax
; X87-NEXT: movl {{[0-9]+}}(%esp), %eax
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: fildl (%esp)
; X87-NEXT: popl %eax
; X87-NEXT: retl
%r = sitofp i32 %a to double
ret double %r
}
define x86_fp80 @u32_to_x(i32 %a) nounwind {
; AVX512_32-LABEL: u32_to_x:
; AVX512_32: # %bb.0:
; AVX512_32-NEXT: pushl %ebp
; AVX512_32-NEXT: movl %esp, %ebp
; AVX512_32-NEXT: andl $-8, %esp
; AVX512_32-NEXT: subl $8, %esp
; AVX512_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512_32-NEXT: vmovss {{.*#+}} xmm1 = mem[0],zero,zero,zero
; AVX512_32-NEXT: vorpd %xmm0, %xmm1, %xmm1
; AVX512_32-NEXT: vsubsd %xmm0, %xmm1, %xmm0
; AVX512_32-NEXT: vmovsd %xmm0, (%esp)
; AVX512_32-NEXT: fldl (%esp)
; AVX512_32-NEXT: movl %ebp, %esp
; AVX512_32-NEXT: popl %ebp
; AVX512_32-NEXT: retl
;
; AVX512_64-LABEL: u32_to_x:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vmovq {{.*#+}} xmm0 = mem[0],zero
; AVX512_64-NEXT: vmovd %edi, %xmm1
; AVX512_64-NEXT: vpor %xmm0, %xmm1, %xmm1
; AVX512_64-NEXT: vsubsd %xmm0, %xmm1, %xmm0
; AVX512_64-NEXT: vmovsd %xmm0, -{{[0-9]+}}(%rsp)
; AVX512_64-NEXT: fldl -{{[0-9]+}}(%rsp)
; AVX512_64-NEXT: retq
;
; SSE2_32-LABEL: u32_to_x:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $8, %esp
; SSE2_32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; SSE2_32-NEXT: movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
; SSE2_32-NEXT: orpd %xmm0, %xmm1
; SSE2_32-NEXT: subsd %xmm0, %xmm1
; SSE2_32-NEXT: movsd %xmm1, (%esp)
; SSE2_32-NEXT: fldl (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: u32_to_x:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: movl %edi, %eax
; SSE2_64-NEXT: movq %rax, -{{[0-9]+}}(%rsp)
; SSE2_64-NEXT: fildll -{{[0-9]+}}(%rsp)
; SSE2_64-NEXT: retq
;
; X87-LABEL: u32_to_x:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $8, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: movl $0, {{[0-9]+}}(%esp)
; X87-NEXT: fildll (%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%r = uitofp i32 %a to x86_fp80
ret x86_fp80 %r
}
define x86_fp80 @s32_to_x(i32 %a) nounwind {
; CHECK32-LABEL: s32_to_x:
; CHECK32: # %bb.0:
; CHECK32-NEXT: pushl %eax
; CHECK32-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK32-NEXT: movl %eax, (%esp)
; CHECK32-NEXT: fildl (%esp)
; CHECK32-NEXT: popl %eax
; CHECK32-NEXT: retl
;
; CHECK64-LABEL: s32_to_x:
; CHECK64: # %bb.0:
; CHECK64-NEXT: movl %edi, -{{[0-9]+}}(%rsp)
; CHECK64-NEXT: fildl -{{[0-9]+}}(%rsp)
; CHECK64-NEXT: retq
%r = sitofp i32 %a to x86_fp80
ret x86_fp80 %r
}
define float @u64_to_f(i64 %a) nounwind {
; AVX512DQVL_32-LABEL: u64_to_f:
; AVX512DQVL_32: # %bb.0:
; AVX512DQVL_32-NEXT: pushl %eax
; AVX512DQVL_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQVL_32-NEXT: vcvtuqq2ps %ymm0, %xmm0
; AVX512DQVL_32-NEXT: vmovss %xmm0, (%esp)
; AVX512DQVL_32-NEXT: flds (%esp)
; AVX512DQVL_32-NEXT: popl %eax
; AVX512DQVL_32-NEXT: vzeroupper
; AVX512DQVL_32-NEXT: retl
;
; AVX512_64-LABEL: u64_to_f:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtusi2ssq %rdi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; AVX512DQ_32-LABEL: u64_to_f:
; AVX512DQ_32: # %bb.0:
; AVX512DQ_32-NEXT: pushl %eax
; AVX512DQ_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQ_32-NEXT: vcvtuqq2ps %zmm0, %ymm0
; AVX512DQ_32-NEXT: vmovss %xmm0, (%esp)
; AVX512DQ_32-NEXT: flds (%esp)
; AVX512DQ_32-NEXT: popl %eax
; AVX512DQ_32-NEXT: vzeroupper
; AVX512DQ_32-NEXT: retl
;
; AVX512F_32-LABEL: u64_to_f:
; AVX512F_32: # %bb.0:
; AVX512F_32-NEXT: pushl %ebp
; AVX512F_32-NEXT: movl %esp, %ebp
; AVX512F_32-NEXT: andl $-8, %esp
; AVX512F_32-NEXT: subl $16, %esp
; AVX512F_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512F_32-NEXT: vmovlps %xmm0, {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: xorl %eax, %eax
; AVX512F_32-NEXT: cmpl $0, 12(%ebp)
; AVX512F_32-NEXT: setns %al
; AVX512F_32-NEXT: fildll {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: fadds {{\.LCPI.*}}(,%eax,4)
; AVX512F_32-NEXT: fstps {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; AVX512F_32-NEXT: vmovss %xmm0, (%esp)
; AVX512F_32-NEXT: flds (%esp)
; AVX512F_32-NEXT: movl %ebp, %esp
; AVX512F_32-NEXT: popl %ebp
; AVX512F_32-NEXT: retl
;
; SSE2_32-LABEL: u64_to_f:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $16, %esp
; SSE2_32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; SSE2_32-NEXT: movlps %xmm0, {{[0-9]+}}(%esp)
; SSE2_32-NEXT: xorl %eax, %eax
; SSE2_32-NEXT: cmpl $0, 12(%ebp)
; SSE2_32-NEXT: setns %al
; SSE2_32-NEXT: fildll {{[0-9]+}}(%esp)
; SSE2_32-NEXT: fadds {{\.LCPI.*}}(,%eax,4)
; SSE2_32-NEXT: fstps {{[0-9]+}}(%esp)
; SSE2_32-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; SSE2_32-NEXT: movss %xmm0, (%esp)
; SSE2_32-NEXT: flds (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: u64_to_f:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: testq %rdi, %rdi
; SSE2_64-NEXT: js .LBB6_1
; SSE2_64-NEXT: # %bb.2:
; SSE2_64-NEXT: cvtsi2ssq %rdi, %xmm0
; SSE2_64-NEXT: retq
; SSE2_64-NEXT: .LBB6_1:
; SSE2_64-NEXT: movq %rdi, %rax
; SSE2_64-NEXT: shrq %rax
; SSE2_64-NEXT: andl $1, %edi
; SSE2_64-NEXT: orq %rax, %rdi
; SSE2_64-NEXT: cvtsi2ssq %rdi, %xmm0
; SSE2_64-NEXT: addss %xmm0, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: u64_to_f:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $16, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl 12(%ebp), %ecx
; X87-NEXT: movl %ecx, {{[0-9]+}}(%esp)
; X87-NEXT: movl %eax, {{[0-9]+}}(%esp)
; X87-NEXT: xorl %eax, %eax
; X87-NEXT: testl %ecx, %ecx
; X87-NEXT: setns %al
; X87-NEXT: fildll {{[0-9]+}}(%esp)
; X87-NEXT: fadds {{\.LCPI.*}}(,%eax,4)
; X87-NEXT: fstps {{[0-9]+}}(%esp)
; X87-NEXT: flds {{[0-9]+}}(%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%r = uitofp i64 %a to float
ret float %r
}
define float @s64_to_f(i64 %a) nounwind {
; AVX512DQVL_32-LABEL: s64_to_f:
; AVX512DQVL_32: # %bb.0:
; AVX512DQVL_32-NEXT: pushl %eax
; AVX512DQVL_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQVL_32-NEXT: vcvtqq2ps %ymm0, %xmm0
; AVX512DQVL_32-NEXT: vmovss %xmm0, (%esp)
; AVX512DQVL_32-NEXT: flds (%esp)
; AVX512DQVL_32-NEXT: popl %eax
; AVX512DQVL_32-NEXT: vzeroupper
; AVX512DQVL_32-NEXT: retl
;
; AVX512_64-LABEL: s64_to_f:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtsi2ssq %rdi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; AVX512DQ_32-LABEL: s64_to_f:
; AVX512DQ_32: # %bb.0:
; AVX512DQ_32-NEXT: pushl %eax
; AVX512DQ_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQ_32-NEXT: vcvtqq2ps %zmm0, %ymm0
; AVX512DQ_32-NEXT: vmovss %xmm0, (%esp)
; AVX512DQ_32-NEXT: flds (%esp)
; AVX512DQ_32-NEXT: popl %eax
; AVX512DQ_32-NEXT: vzeroupper
; AVX512DQ_32-NEXT: retl
;
; AVX512F_32-LABEL: s64_to_f:
; AVX512F_32: # %bb.0:
; AVX512F_32-NEXT: pushl %eax
; AVX512F_32-NEXT: fildll {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: fstps (%esp)
; AVX512F_32-NEXT: flds (%esp)
; AVX512F_32-NEXT: popl %eax
; AVX512F_32-NEXT: retl
;
; SSE2_32-LABEL: s64_to_f:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %eax
; SSE2_32-NEXT: fildll {{[0-9]+}}(%esp)
; SSE2_32-NEXT: fstps (%esp)
; SSE2_32-NEXT: flds (%esp)
; SSE2_32-NEXT: popl %eax
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: s64_to_f:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: cvtsi2ssq %rdi, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: s64_to_f:
; X87: # %bb.0:
; X87-NEXT: fildll {{[0-9]+}}(%esp)
; X87-NEXT: retl
%r = sitofp i64 %a to float
ret float %r
}
define float @s64_to_f_2(i64 %a) nounwind {
; AVX512DQVL_32-LABEL: s64_to_f_2:
; AVX512DQVL_32: # %bb.0:
; AVX512DQVL_32-NEXT: pushl %eax
; AVX512DQVL_32-NEXT: movl {{[0-9]+}}(%esp), %eax
; AVX512DQVL_32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; AVX512DQVL_32-NEXT: addl $5, %eax
; AVX512DQVL_32-NEXT: adcl $0, %ecx
; AVX512DQVL_32-NEXT: vmovd %eax, %xmm0
; AVX512DQVL_32-NEXT: vpinsrd $1, %ecx, %xmm0, %xmm0
; AVX512DQVL_32-NEXT: vcvtqq2ps %ymm0, %xmm0
; AVX512DQVL_32-NEXT: vmovss %xmm0, (%esp)
; AVX512DQVL_32-NEXT: flds (%esp)
; AVX512DQVL_32-NEXT: popl %eax
; AVX512DQVL_32-NEXT: vzeroupper
; AVX512DQVL_32-NEXT: retl
;
; AVX512_64-LABEL: s64_to_f_2:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: addq $5, %rdi
; AVX512_64-NEXT: vcvtsi2ssq %rdi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; AVX512DQ_32-LABEL: s64_to_f_2:
; AVX512DQ_32: # %bb.0:
; AVX512DQ_32-NEXT: pushl %eax
; AVX512DQ_32-NEXT: movl {{[0-9]+}}(%esp), %eax
; AVX512DQ_32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; AVX512DQ_32-NEXT: addl $5, %eax
; AVX512DQ_32-NEXT: adcl $0, %ecx
; AVX512DQ_32-NEXT: vmovd %eax, %xmm0
; AVX512DQ_32-NEXT: vpinsrd $1, %ecx, %xmm0, %xmm0
; AVX512DQ_32-NEXT: vcvtqq2ps %zmm0, %ymm0
; AVX512DQ_32-NEXT: vmovss %xmm0, (%esp)
; AVX512DQ_32-NEXT: flds (%esp)
; AVX512DQ_32-NEXT: popl %eax
; AVX512DQ_32-NEXT: vzeroupper
; AVX512DQ_32-NEXT: retl
;
; AVX512F_32-LABEL: s64_to_f_2:
; AVX512F_32: # %bb.0:
; AVX512F_32-NEXT: pushl %ebp
; AVX512F_32-NEXT: movl %esp, %ebp
; AVX512F_32-NEXT: andl $-8, %esp
; AVX512F_32-NEXT: subl $16, %esp
; AVX512F_32-NEXT: movl 8(%ebp), %eax
; AVX512F_32-NEXT: movl 12(%ebp), %ecx
; AVX512F_32-NEXT: addl $5, %eax
; AVX512F_32-NEXT: adcl $0, %ecx
; AVX512F_32-NEXT: vmovd %eax, %xmm0
; AVX512F_32-NEXT: vpinsrd $1, %ecx, %xmm0, %xmm0
; AVX512F_32-NEXT: vmovq %xmm0, {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: fildll {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: fstps {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: flds {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: movl %ebp, %esp
; AVX512F_32-NEXT: popl %ebp
; AVX512F_32-NEXT: retl
;
; SSE2_32-LABEL: s64_to_f_2:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $16, %esp
; SSE2_32-NEXT: movl 8(%ebp), %eax
; SSE2_32-NEXT: movl 12(%ebp), %ecx
; SSE2_32-NEXT: addl $5, %eax
; SSE2_32-NEXT: adcl $0, %ecx
; SSE2_32-NEXT: movd %ecx, %xmm0
; SSE2_32-NEXT: movd %eax, %xmm1
; SSE2_32-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1]
; SSE2_32-NEXT: movq %xmm1, {{[0-9]+}}(%esp)
; SSE2_32-NEXT: fildll {{[0-9]+}}(%esp)
; SSE2_32-NEXT: fstps {{[0-9]+}}(%esp)
; SSE2_32-NEXT: flds {{[0-9]+}}(%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: s64_to_f_2:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: addq $5, %rdi
; SSE2_64-NEXT: cvtsi2ssq %rdi, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: s64_to_f_2:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $8, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl 12(%ebp), %ecx
; X87-NEXT: addl $5, %eax
; X87-NEXT: adcl $0, %ecx
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: movl %ecx, {{[0-9]+}}(%esp)
; X87-NEXT: fildll (%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%a1 = add i64 %a, 5
%r = sitofp i64 %a1 to float
ret float %r
}
define double @u64_to_d(i64 %a) nounwind {
; AVX512DQVL_32-LABEL: u64_to_d:
; AVX512DQVL_32: # %bb.0:
; AVX512DQVL_32-NEXT: pushl %ebp
; AVX512DQVL_32-NEXT: movl %esp, %ebp
; AVX512DQVL_32-NEXT: andl $-8, %esp
; AVX512DQVL_32-NEXT: subl $8, %esp
; AVX512DQVL_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQVL_32-NEXT: vcvtuqq2pd %ymm0, %ymm0
; AVX512DQVL_32-NEXT: vmovlps %xmm0, (%esp)
; AVX512DQVL_32-NEXT: fldl (%esp)
; AVX512DQVL_32-NEXT: movl %ebp, %esp
; AVX512DQVL_32-NEXT: popl %ebp
; AVX512DQVL_32-NEXT: vzeroupper
; AVX512DQVL_32-NEXT: retl
;
; AVX512_64-LABEL: u64_to_d:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtusi2sdq %rdi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; AVX512DQ_32-LABEL: u64_to_d:
; AVX512DQ_32: # %bb.0:
; AVX512DQ_32-NEXT: pushl %ebp
; AVX512DQ_32-NEXT: movl %esp, %ebp
; AVX512DQ_32-NEXT: andl $-8, %esp
; AVX512DQ_32-NEXT: subl $8, %esp
; AVX512DQ_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQ_32-NEXT: vcvtuqq2pd %zmm0, %zmm0
; AVX512DQ_32-NEXT: vmovlps %xmm0, (%esp)
; AVX512DQ_32-NEXT: fldl (%esp)
; AVX512DQ_32-NEXT: movl %ebp, %esp
; AVX512DQ_32-NEXT: popl %ebp
; AVX512DQ_32-NEXT: vzeroupper
; AVX512DQ_32-NEXT: retl
;
; AVX512F_32-LABEL: u64_to_d:
; AVX512F_32: # %bb.0:
; AVX512F_32-NEXT: pushl %ebp
; AVX512F_32-NEXT: movl %esp, %ebp
; AVX512F_32-NEXT: andl $-8, %esp
; AVX512F_32-NEXT: subl $8, %esp
; AVX512F_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512F_32-NEXT: vunpcklps {{.*#+}} xmm0 = xmm0[0],mem[0],xmm0[1],mem[1]
; AVX512F_32-NEXT: vsubpd {{\.LCPI.*}}, %xmm0, %xmm0
; AVX512F_32-NEXT: vhaddpd %xmm0, %xmm0, %xmm0
; AVX512F_32-NEXT: vmovlpd %xmm0, (%esp)
; AVX512F_32-NEXT: fldl (%esp)
; AVX512F_32-NEXT: movl %ebp, %esp
; AVX512F_32-NEXT: popl %ebp
; AVX512F_32-NEXT: retl
;
; SSE2_32-LABEL: u64_to_d:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $8, %esp
; SSE2_32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; SSE2_32-NEXT: unpcklps {{.*#+}} xmm0 = xmm0[0],mem[0],xmm0[1],mem[1]
; SSE2_32-NEXT: subpd {{\.LCPI.*}}, %xmm0
; SSE2_32-NEXT: pshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
; SSE2_32-NEXT: addpd %xmm0, %xmm1
; SSE2_32-NEXT: movlpd %xmm1, (%esp)
; SSE2_32-NEXT: fldl (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: u64_to_d:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: movq %rdi, %xmm1
; SSE2_64-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],mem[0],xmm1[1],mem[1]
; SSE2_64-NEXT: subpd {{.*}}(%rip), %xmm1
; SSE2_64-NEXT: pshufd {{.*#+}} xmm0 = xmm1[2,3,0,1]
; SSE2_64-NEXT: addpd %xmm1, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: u64_to_d:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $16, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl 12(%ebp), %ecx
; X87-NEXT: movl %ecx, {{[0-9]+}}(%esp)
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: xorl %eax, %eax
; X87-NEXT: testl %ecx, %ecx
; X87-NEXT: setns %al
; X87-NEXT: fildll (%esp)
; X87-NEXT: fadds {{\.LCPI.*}}(,%eax,4)
; X87-NEXT: fstpl {{[0-9]+}}(%esp)
; X87-NEXT: fldl {{[0-9]+}}(%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%r = uitofp i64 %a to double
ret double %r
}
define double @s64_to_d(i64 %a) nounwind {
; AVX512DQVL_32-LABEL: s64_to_d:
; AVX512DQVL_32: # %bb.0:
; AVX512DQVL_32-NEXT: pushl %ebp
; AVX512DQVL_32-NEXT: movl %esp, %ebp
; AVX512DQVL_32-NEXT: andl $-8, %esp
; AVX512DQVL_32-NEXT: subl $8, %esp
; AVX512DQVL_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQVL_32-NEXT: vcvtqq2pd %ymm0, %ymm0
; AVX512DQVL_32-NEXT: vmovlps %xmm0, (%esp)
; AVX512DQVL_32-NEXT: fldl (%esp)
; AVX512DQVL_32-NEXT: movl %ebp, %esp
; AVX512DQVL_32-NEXT: popl %ebp
; AVX512DQVL_32-NEXT: vzeroupper
; AVX512DQVL_32-NEXT: retl
;
; AVX512_64-LABEL: s64_to_d:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: vcvtsi2sdq %rdi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; AVX512DQ_32-LABEL: s64_to_d:
; AVX512DQ_32: # %bb.0:
; AVX512DQ_32-NEXT: pushl %ebp
; AVX512DQ_32-NEXT: movl %esp, %ebp
; AVX512DQ_32-NEXT: andl $-8, %esp
; AVX512DQ_32-NEXT: subl $8, %esp
; AVX512DQ_32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero
; AVX512DQ_32-NEXT: vcvtqq2pd %zmm0, %zmm0
; AVX512DQ_32-NEXT: vmovlps %xmm0, (%esp)
; AVX512DQ_32-NEXT: fldl (%esp)
; AVX512DQ_32-NEXT: movl %ebp, %esp
; AVX512DQ_32-NEXT: popl %ebp
; AVX512DQ_32-NEXT: vzeroupper
; AVX512DQ_32-NEXT: retl
;
; AVX512F_32-LABEL: s64_to_d:
; AVX512F_32: # %bb.0:
; AVX512F_32-NEXT: pushl %ebp
; AVX512F_32-NEXT: movl %esp, %ebp
; AVX512F_32-NEXT: andl $-8, %esp
; AVX512F_32-NEXT: subl $8, %esp
; AVX512F_32-NEXT: fildll 8(%ebp)
; AVX512F_32-NEXT: fstpl (%esp)
; AVX512F_32-NEXT: fldl (%esp)
; AVX512F_32-NEXT: movl %ebp, %esp
; AVX512F_32-NEXT: popl %ebp
; AVX512F_32-NEXT: retl
;
; SSE2_32-LABEL: s64_to_d:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $8, %esp
; SSE2_32-NEXT: fildll 8(%ebp)
; SSE2_32-NEXT: fstpl (%esp)
; SSE2_32-NEXT: fldl (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: s64_to_d:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: cvtsi2sdq %rdi, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: s64_to_d:
; X87: # %bb.0:
; X87-NEXT: fildll {{[0-9]+}}(%esp)
; X87-NEXT: retl
%r = sitofp i64 %a to double
ret double %r
}
define double @s64_to_d_2(i64 %a) nounwind {
; AVX512DQVL_32-LABEL: s64_to_d_2:
; AVX512DQVL_32: # %bb.0:
; AVX512DQVL_32-NEXT: pushl %ebp
; AVX512DQVL_32-NEXT: movl %esp, %ebp
; AVX512DQVL_32-NEXT: andl $-8, %esp
; AVX512DQVL_32-NEXT: subl $8, %esp
; AVX512DQVL_32-NEXT: movl 8(%ebp), %eax
; AVX512DQVL_32-NEXT: movl 12(%ebp), %ecx
; AVX512DQVL_32-NEXT: addl $5, %eax
; AVX512DQVL_32-NEXT: adcl $0, %ecx
; AVX512DQVL_32-NEXT: vmovd %eax, %xmm0
; AVX512DQVL_32-NEXT: vpinsrd $1, %ecx, %xmm0, %xmm0
; AVX512DQVL_32-NEXT: vcvtqq2pd %ymm0, %ymm0
; AVX512DQVL_32-NEXT: vmovlps %xmm0, (%esp)
; AVX512DQVL_32-NEXT: fldl (%esp)
; AVX512DQVL_32-NEXT: movl %ebp, %esp
; AVX512DQVL_32-NEXT: popl %ebp
; AVX512DQVL_32-NEXT: vzeroupper
; AVX512DQVL_32-NEXT: retl
;
; AVX512_64-LABEL: s64_to_d_2:
; AVX512_64: # %bb.0:
; AVX512_64-NEXT: addq $5, %rdi
; AVX512_64-NEXT: vcvtsi2sdq %rdi, %xmm0, %xmm0
; AVX512_64-NEXT: retq
;
; AVX512DQ_32-LABEL: s64_to_d_2:
; AVX512DQ_32: # %bb.0:
; AVX512DQ_32-NEXT: pushl %ebp
; AVX512DQ_32-NEXT: movl %esp, %ebp
; AVX512DQ_32-NEXT: andl $-8, %esp
; AVX512DQ_32-NEXT: subl $8, %esp
; AVX512DQ_32-NEXT: movl 8(%ebp), %eax
; AVX512DQ_32-NEXT: movl 12(%ebp), %ecx
; AVX512DQ_32-NEXT: addl $5, %eax
; AVX512DQ_32-NEXT: adcl $0, %ecx
; AVX512DQ_32-NEXT: vmovd %eax, %xmm0
; AVX512DQ_32-NEXT: vpinsrd $1, %ecx, %xmm0, %xmm0
; AVX512DQ_32-NEXT: vcvtqq2pd %zmm0, %zmm0
; AVX512DQ_32-NEXT: vmovlps %xmm0, (%esp)
; AVX512DQ_32-NEXT: fldl (%esp)
; AVX512DQ_32-NEXT: movl %ebp, %esp
; AVX512DQ_32-NEXT: popl %ebp
; AVX512DQ_32-NEXT: vzeroupper
; AVX512DQ_32-NEXT: retl
;
; AVX512F_32-LABEL: s64_to_d_2:
; AVX512F_32: # %bb.0:
; AVX512F_32-NEXT: pushl %ebp
; AVX512F_32-NEXT: movl %esp, %ebp
; AVX512F_32-NEXT: andl $-8, %esp
; AVX512F_32-NEXT: subl $16, %esp
; AVX512F_32-NEXT: movl 8(%ebp), %eax
; AVX512F_32-NEXT: movl 12(%ebp), %ecx
; AVX512F_32-NEXT: addl $5, %eax
; AVX512F_32-NEXT: adcl $0, %ecx
; AVX512F_32-NEXT: vmovd %eax, %xmm0
; AVX512F_32-NEXT: vpinsrd $1, %ecx, %xmm0, %xmm0
; AVX512F_32-NEXT: vmovq %xmm0, {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: fildll {{[0-9]+}}(%esp)
; AVX512F_32-NEXT: fstpl (%esp)
; AVX512F_32-NEXT: fldl (%esp)
; AVX512F_32-NEXT: movl %ebp, %esp
; AVX512F_32-NEXT: popl %ebp
; AVX512F_32-NEXT: retl
;
; SSE2_32-LABEL: s64_to_d_2:
; SSE2_32: # %bb.0:
; SSE2_32-NEXT: pushl %ebp
; SSE2_32-NEXT: movl %esp, %ebp
; SSE2_32-NEXT: andl $-8, %esp
; SSE2_32-NEXT: subl $16, %esp
; SSE2_32-NEXT: movl 8(%ebp), %eax
; SSE2_32-NEXT: movl 12(%ebp), %ecx
; SSE2_32-NEXT: addl $5, %eax
; SSE2_32-NEXT: adcl $0, %ecx
; SSE2_32-NEXT: movd %ecx, %xmm0
; SSE2_32-NEXT: movd %eax, %xmm1
; SSE2_32-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1]
; SSE2_32-NEXT: movq %xmm1, {{[0-9]+}}(%esp)
; SSE2_32-NEXT: fildll {{[0-9]+}}(%esp)
; SSE2_32-NEXT: fstpl (%esp)
; SSE2_32-NEXT: fldl (%esp)
; SSE2_32-NEXT: movl %ebp, %esp
; SSE2_32-NEXT: popl %ebp
; SSE2_32-NEXT: retl
;
; SSE2_64-LABEL: s64_to_d_2:
; SSE2_64: # %bb.0:
; SSE2_64-NEXT: addq $5, %rdi
; SSE2_64-NEXT: cvtsi2sdq %rdi, %xmm0
; SSE2_64-NEXT: retq
;
; X87-LABEL: s64_to_d_2:
; X87: # %bb.0:
; X87-NEXT: pushl %ebp
; X87-NEXT: movl %esp, %ebp
; X87-NEXT: andl $-8, %esp
; X87-NEXT: subl $8, %esp
; X87-NEXT: movl 8(%ebp), %eax
; X87-NEXT: movl 12(%ebp), %ecx
; X87-NEXT: addl $5, %eax
; X87-NEXT: adcl $0, %ecx
; X87-NEXT: movl %eax, (%esp)
; X87-NEXT: movl %ecx, {{[0-9]+}}(%esp)
; X87-NEXT: fildll (%esp)
; X87-NEXT: movl %ebp, %esp
; X87-NEXT: popl %ebp
; X87-NEXT: retl
%b = add i64 %a, 5
%f = sitofp i64 %b to double
ret double %f
}
define x86_fp80 @u64_to_x(i64 %a) nounwind {
; CHECK32-LABEL: u64_to_x:
; CHECK32: # %bb.0:
; CHECK32-NEXT: pushl %ebp
; CHECK32-NEXT: movl %esp, %ebp
; CHECK32-NEXT: andl $-8, %esp
; CHECK32-NEXT: subl $8, %esp
; CHECK32-NEXT: movl 8(%ebp), %eax
; CHECK32-NEXT: movl 12(%ebp), %ecx
; CHECK32-NEXT: movl %ecx, {{[0-9]+}}(%esp)
; CHECK32-NEXT: movl %eax, (%esp)
; CHECK32-NEXT: xorl %eax, %eax
; CHECK32-NEXT: testl %ecx, %ecx
; CHECK32-NEXT: setns %al
; CHECK32-NEXT: fildll (%esp)
; CHECK32-NEXT: fadds {{\.LCPI.*}}(,%eax,4)
; CHECK32-NEXT: movl %ebp, %esp
; CHECK32-NEXT: popl %ebp
; CHECK32-NEXT: retl
;
; CHECK64-LABEL: u64_to_x:
; CHECK64: # %bb.0:
; CHECK64-NEXT: movq %rdi, -{{[0-9]+}}(%rsp)
; CHECK64-NEXT: xorl %eax, %eax
; CHECK64-NEXT: testq %rdi, %rdi
; CHECK64-NEXT: setns %al
; CHECK64-NEXT: fildll -{{[0-9]+}}(%rsp)
; CHECK64-NEXT: fadds {{\.LCPI.*}}(,%rax,4)
; CHECK64-NEXT: retq
%r = uitofp i64 %a to x86_fp80
ret x86_fp80 %r
}
define x86_fp80 @s64_to_x(i64 %a) nounwind {
; CHECK32-LABEL: s64_to_x:
; CHECK32: # %bb.0:
; CHECK32-NEXT: fildll {{[0-9]+}}(%esp)
; CHECK32-NEXT: retl
;
; CHECK64-LABEL: s64_to_x:
; CHECK64: # %bb.0:
; CHECK64-NEXT: movq %rdi, -{{[0-9]+}}(%rsp)
; CHECK64-NEXT: fildll -{{[0-9]+}}(%rsp)
; CHECK64-NEXT: retq
%r = sitofp i64 %a to x86_fp80
ret x86_fp80 %r
}