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Feature test for half precision FP.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98504 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2010-03-14 18:42:43 +00:00
parent 631379e79c
commit b9b5840d96
1 changed files with 32 additions and 0 deletions
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test/CodeGen/ARM/fp16.ll Normal file
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; RUN: llc < %s | FileCheck %s
; RUN: llc -mattr=+fp16,+vfp3 | FileCheck --check-prefix=CHECK-FP16 %s
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"
target triple = "armv7-eabi"
@x = global i16 12902
@y = global i16 0
@z = common global i16 0
define arm_aapcs_vfpcc void @foo() nounwind {
; CHECK: foo:
; CHECK-FP6: foo:
entry:
%0 = load i16* @x, align 2
%1 = load i16* @y, align 2
%2 = tail call float @llvm.convert.from.fp16(i16 %0)
; CHECK: __gnu_h2f_ieee
; CHECK-FP16: vcvtb.f16.f32
%3 = tail call float @llvm.convert.from.fp16(i16 %1)
; CHECK: __gnu_h2f_ieee
; CHECK-FP16: vcvtb.f16.f32
%4 = fadd float %2, %3
%5 = tail call i16 @llvm.convert.to.fp16(float %4)
; CHECK: __gnu_f2h_ieee
; CHECK-FP16: vcvtb.f32.f16
store i16 %5, i16* @x, align 2
ret void
}
declare float @llvm.convert.from.fp16(i16) nounwind readnone
declare i16 @llvm.convert.to.fp16(float) nounwind readnone