1 ; RUN: llc -mtriple=armv7a--none-eabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-HARDFLOAT-EABI %s
2 ; RUN: llc -mtriple=armv7a--none-gnueabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-HARDFLOAT-GNU %s
3 ; RUN: llc -mtriple=armv7a--none-musleabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-HARDFLOAT-GNU %s
4 ; RUN: llc -mtriple=armv8-eabihf < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-ARMV8 %s
5 ; RUN: llc -mtriple=thumbv7m-eabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-SOFTFLOAT-EABI %s
6 ; RUN: llc -mtriple=thumbv7m-gnueabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-SOFTFLOAT-GNU %s
7 ; RUN: llc -mtriple=thumbv7m-musleabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-SOFTFLOAT-GNU %s
9 ;; +fp16 is special: it has f32->f16 (unlike v7), but not f64->f16 (unlike v8).
10 ;; This exposes unsafe-fp-math optimization opportunities; test that.
11 ; RUN: llc -mattr=+vfp3,+fp16 < %s |\
12 ; RUN: FileCheck --check-prefix=CHECK --check-prefix=CHECK-FP16 --check-prefix=CHECK-FP16-SAFE %s
13 ; RUN: llc -mattr=+vfp3,+fp16 < %s -enable-unsafe-fp-math |\
14 ; RUN: FileCheck --check-prefix=CHECK --check-prefix=CHECK-FP16 --check-prefix=CHECK-FP16-UNSAFE %s
16 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32"
17 target triple = "armv7---eabihf"
21 @z = common global i16 0
23 define void @foo() nounwind {
26 %0 = load i16, ptr @x, align 2
27 %1 = load i16, ptr @y, align 2
28 %2 = tail call float @llvm.convert.from.fp16.f32(i16 %0)
29 ; CHECK-HARDFLOAT-EABI: __aeabi_h2f
30 ; CHECK-HARDFLOAT-GNU: __gnu_h2f_ieee
31 ; CHECK-FP16: vcvtb.f32.f16
32 ; CHECK-ARMV8: vcvtb.f32.f16
33 ; CHECK-SOFTFLOAT-EABI: __aeabi_h2f
34 ; CHECK-SOFTFLOAT-GNU: __gnu_h2f_ieee
35 %3 = tail call float @llvm.convert.from.fp16.f32(i16 %1)
36 ; CHECK-HARDFLOAT-EABI: __aeabi_h2f
37 ; CHECK-HARDFLOAT-GNU: __gnu_h2f_ieee
38 ; CHECK-FP16: vcvtb.f32.f16
39 ; CHECK-ARMV8: vcvtb.f32.f16
40 ; CHECK-SOFTFLOAT-EABI: __aeabi_h2f
41 ; CHECK-SOFTFLOAT-GNU: __gnu_h2f_ieee
42 %4 = fadd float %2, %3
43 %5 = tail call i16 @llvm.convert.to.fp16.f32(float %4)
44 ; CHECK-HARDFLOAT-EABI: __aeabi_f2h
45 ; CHECK-HARDFLOAT-GNU: __gnu_f2h_ieee
46 ; CHECK-FP16: vcvtb.f16.f32
47 ; CHECK-ARMV8: vcvtb.f16.f32
48 ; CHECK-SOFTFLOAT-EABI: __aeabi_f2h
49 ; CHECK-SOFTFLOAT-GNU: __gnu_f2h_ieee
50 store i16 %5, ptr @x, align 2
54 define double @test_from_fp16(i16 %in) {
55 ; CHECK-LABEL: test_from_fp16:
56 %val = call double @llvm.convert.from.fp16.f64(i16 %in)
57 ; CHECK-HARDFLOAT-EABI: bl __aeabi_h2f
58 ; CHECK-HARDFLOAT-EABI: vmov [[TMP:s[0-9]+]], r0
59 ; CHECK-HARDFLOAT-EABI: vcvt.f64.f32 {{d[0-9]+}}, [[TMP]]
61 ; CHECK-HARDFLOAT-GNU: bl __gnu_h2f_ieee
62 ; CHECK-HARDFLOAT-GNU: vmov [[TMP:s[0-9]+]], r0
63 ; CHECK-HARDFLOAT-GNU: vcvt.f64.f32 {{d[0-9]+}}, [[TMP]]
65 ; CHECK-FP16: vmov [[TMP16:s[0-9]+]], r0
66 ; CHECK-FP16: vcvtb.f32.f16 [[TMP32:s[0-9]+]], [[TMP16]]
67 ; CHECK-FP16: vcvt.f64.f32 d0, [[TMP32]]
69 ; CHECK-ARMV8: vmov [[TMP:s[0-9]+]], r0
70 ; CHECK-ARMV8: vcvtb.f64.f16 d0, [[TMP]]
72 ; CHECK-SOFTFLOAT-EABI: bl __aeabi_h2f
73 ; CHECK-SOFTFLOAT-EABI: bl __aeabi_f2d
75 ; CHECK-SOFTFLOAT-GNU: bl __gnu_h2f_ieee
76 ; CHECK-SOFTFLOAT-GNU: bl __aeabi_f2d
80 define i16 @test_to_fp16(double %in) {
81 ; CHECK-LABEL: test_to_fp16:
82 %val = call i16 @llvm.convert.to.fp16.f64(double %in)
83 ; CHECK-HARDFLOAT-EABI: bl __aeabi_d2h
85 ; CHECK-HARDFLOAT-GNU: bl __aeabi_d2h
87 ; CHECK-FP16-SAFE: bl __aeabi_d2h
89 ; CHECK-FP16-UNSAFE: vcvt.f32.f64 s0, d0
90 ; CHECK-FP16-UNSAFE-NEXT: vcvtb.f16.f32 s0, s0
92 ; CHECK-ARMV8: vcvtb.f16.f64 [[TMP:s[0-9]+]], d0
93 ; CHECK-ARMV8: vmov r0, [[TMP]]
95 ; CHECK-SOFTFLOAT-EABI: bl __aeabi_d2h
97 ; CHECK-SOFTFLOAT-GNU: bl __aeabi_d2h
101 declare float @llvm.convert.from.fp16.f32(i16) nounwind readnone
102 declare double @llvm.convert.from.fp16.f64(i16) nounwind readnone
104 declare i16 @llvm.convert.to.fp16.f32(float) nounwind readnone
105 declare i16 @llvm.convert.to.fp16.f64(double) nounwind readnone