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 8 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 15 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" 18 19 @x = global i16 12902 20 @y = global i16 0 21 @z = common global i16 0 22 23 define void @foo() nounwind { 24 ; CHECK-LABEL: foo: 25 entry: 26 %0 = load i16, i16* @x, align 2 27 %1 = load i16, i16* @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, i16* @x, align 2 51 ret void 52 } 53 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]] 60 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]] 64 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]] 68 69 ; CHECK-ARMV8: vmov [[TMP:s[0-9]+]], r0 70 ; CHECK-ARMV8: vcvtb.f64.f16 d0, [[TMP]] 71 72 ; CHECK-SOFTFLOAT-EABI: bl __aeabi_h2f 73 ; CHECK-SOFTFLOAT-EABI: bl __aeabi_f2d 74 75 ; CHECK-SOFTFLOAT-GNU: bl __gnu_h2f_ieee 76 ; CHECK-SOFTFLOAT-GNU: bl __aeabi_f2d 77 ret double %val 78 } 79 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 84 85 ; CHECK-HARDFLOAT-GNU: bl __aeabi_d2h 86 87 ; CHECK-FP16-SAFE: bl __aeabi_d2h 88 89 ; CHECK-FP16-UNSAFE: vcvt.f32.f64 s0, d0 90 ; CHECK-FP16-UNSAFE-NEXT: vcvtb.f16.f32 s0, s0 91 92 ; CHECK-ARMV8: vcvtb.f16.f64 [[TMP:s[0-9]+]], d0 93 ; CHECK-ARMV8: vmov r0, [[TMP]] 94 95 ; CHECK-SOFTFLOAT-EABI: bl __aeabi_d2h 96 97 ; CHECK-SOFTFLOAT-GNU: bl __aeabi_d2h 98 ret i16 %val 99 } 100 101 declare float @llvm.convert.from.fp16.f32(i16) nounwind readnone 102 declare double @llvm.convert.from.fp16.f64(i16) nounwind readnone 103 104 declare i16 @llvm.convert.to.fp16.f32(float) nounwind readnone 105 declare i16 @llvm.convert.to.fp16.f64(double) nounwind readnone 106
