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Unfortunately, we don't seem to have a direct truncation, but the extension can be legally split into two operations so we should support that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213357 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
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declare float @llvm.convert.from.fp16.f32(i16) nounwind readnone
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declare double @llvm.convert.from.fp16.f64(i16) nounwind readnone
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; SI-LABEL: @test_convert_fp16_to_fp32:
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; SI: BUFFER_LOAD_USHORT [[VAL:v[0-9]+]]
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; SI: V_CVT_F32_F16_e32 [[RESULT:v[0-9]+]], [[VAL]]
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; SI: BUFFER_STORE_DWORD [[RESULT]]
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define void @test_convert_fp16_to_fp32(float addrspace(1)* noalias %out, i16 addrspace(1)* noalias %in) nounwind {
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%val = load i16 addrspace(1)* %in, align 2
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%cvt = call float @llvm.convert.from.fp16.f32(i16 %val) nounwind readnone
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store float %cvt, float addrspace(1)* %out, align 4
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ret void
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}
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; SI-LABEL: @test_convert_fp16_to_fp64:
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; SI: BUFFER_LOAD_USHORT [[VAL:v[0-9]+]]
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; SI: V_CVT_F32_F16_e32 [[RESULT32:v[0-9]+]], [[VAL]]
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; SI: V_CVT_F64_F32_e32 [[RESULT:v\[[0-9]+:[0-9]+\]]], [[RESULT32]]
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; SI: BUFFER_STORE_DWORDX2 [[RESULT]]
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define void @test_convert_fp16_to_fp64(double addrspace(1)* noalias %out, i16 addrspace(1)* noalias %in) nounwind {
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%val = load i16 addrspace(1)* %in, align 2
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%cvt = call double @llvm.convert.from.fp16.f64(i16 %val) nounwind readnone
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store double %cvt, double addrspace(1)* %out, align 4
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ret void
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}
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