1; RUN: llc < %s | FileCheck %s
2; RUN: llc -mattr=+vfp3,+fp16 < %s | FileCheck --check-prefix=CHECK-FP16 %s
3; RUN: llc -mtriple=armv8-eabihf < %s | FileCheck --check-prefix=CHECK-ARMV8 %s
4; RUN: llc -mtriple=thumbv7m-eabi < %s | FileCheck --check-prefix=CHECK-SOFTFLOAT %s
5
6target 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"
7target triple = "armv7---eabihf"
8
9@x = global i16 12902
10@y = global i16 0
11@z = common global i16 0
12
13define void @foo() nounwind {
14; CHECK-LABEL: foo:
15; CHECK-FP16-LABEL: foo:
16; CHECK-ARMV8-LABEL: foo:
17; CHECK-SOFTFLOAT-LABEL: foo:
18entry:
19  %0 = load i16* @x, align 2
20  %1 = load i16* @y, align 2
21  %2 = tail call float @llvm.convert.from.fp16.f32(i16 %0)
22; CHECK: __gnu_h2f_ieee
23; CHECK-FP16: vcvtb.f32.f16
24; CHECK-ARMv8: vcvtb.f32.f16
25; CHECK-SOFTFLOAT: __gnu_h2f_ieee
26  %3 = tail call float @llvm.convert.from.fp16.f32(i16 %1)
27; CHECK: __gnu_h2f_ieee
28; CHECK-FP16: vcvtb.f32.f16
29; CHECK-ARMV8: vcvtb.f32.f16
30; CHECK-SOFTFLOAT: __gnu_h2f_ieee
31  %4 = fadd float %2, %3
32  %5 = tail call i16 @llvm.convert.to.fp16.f32(float %4)
33; CHECK: __gnu_f2h_ieee
34; CHECK-FP16: vcvtb.f16.f32
35; CHECK-ARMV8: vcvtb.f16.f32
36; CHECK-SOFTFLOAT: __gnu_f2h_ieee
37  store i16 %5, i16* @x, align 2
38  ret void
39}
40
41define double @test_from_fp16(i16 %in) {
42; CHECK-LABEL: test_from_fp16:
43; CHECK-FP16-LABEL: test_from_fp16:
44; CHECK-ARMV8-LABEL: test_from_fp16:
45; CHECK-SOFTFLOAT-LABEL: test_from_fp16:
46  %val = call double @llvm.convert.from.fp16.f64(i16 %in)
47; CHECK: bl __gnu_h2f_ieee
48; CHECK: vmov [[TMP:s[0-9]+]], r0
49; CHECK: vcvt.f64.f32 d0, [[TMP]]
50
51; CHECK-FP16: vmov [[TMP16:s[0-9]+]], r0
52; CHECK-FP16: vcvtb.f32.f16 [[TMP32:s[0-9]+]], [[TMP16]]
53; CHECK-FP16: vcvt.f64.f32 d0, [[TMP32]]
54
55; CHECK-ARMV8: vmov [[TMP:s[0-9]+]], r0
56; CHECK-ARMV8: vcvtb.f64.f16 d0, [[TMP]]
57
58; CHECK-SOFTFLOAT: bl __gnu_h2f_ieee
59; CHECK-SOFTFLOAT: bl __aeabi_f2d
60  ret double %val
61}
62
63define i16 @test_to_fp16(double %in) {
64; CHECK-LABEL: test_to_fp16:
65; CHECK-FP16-LABEL: test_to_fp16:
66; CHECK-ARMV8-LABEL: test_to_fp16:
67; CHECK-SOFTFLOAT-LABEL: test_to_fp16:
68  %val = call i16 @llvm.convert.to.fp16.f64(double %in)
69; CHECK: bl __aeabi_d2h
70
71; CHECK-FP16: bl __aeabi_d2h
72
73; CHECK-ARMV8: vcvtb.f16.f64 [[TMP:s[0-9]+]], d0
74; CHECK-ARMV8: vmov r0, [[TMP]]
75
76; CHECK-SOFTFLOAT: bl __aeabi_d2h
77  ret i16 %val
78}
79
80declare float @llvm.convert.from.fp16.f32(i16) nounwind readnone
81declare double @llvm.convert.from.fp16.f64(i16) nounwind readnone
82
83declare i16 @llvm.convert.to.fp16.f32(float) nounwind readnone
84declare i16 @llvm.convert.to.fp16.f64(double) nounwind readnone
85