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%opencl.image2d_t = type opaque
declare <4 x float> @llvm.R600.tex(<4 x float>, i32, i32, i32, i32, i32, i32,
i32, i32, i32) readnone
declare i32 @llvm.OpenCL.image.get.resource.id.2d(
%opencl.image2d_t addrspace(1)*) nounwind readnone
declare i32 @llvm.OpenCL.sampler.get.resource.id(i32) readnone
define <4 x float> @__clc_v4f_from_v2f(<2 x float> %v) alwaysinline {
%e0 = extractelement <2 x float> %v, i32 0
%e1 = extractelement <2 x float> %v, i32 1
%res.0 = insertelement <4 x float> undef, float %e0, i32 0
%res.1 = insertelement <4 x float> %res.0, float %e1, i32 1
%res.2 = insertelement <4 x float> %res.1, float 0.0, i32 2
%res.3 = insertelement <4 x float> %res.2, float 0.0, i32 3
ret <4 x float> %res.3
}
define <4 x float> @__clc_read_imagef_tex(
%opencl.image2d_t addrspace(1)* nocapture %img,
i32 %sampler, <2 x float> %coord) alwaysinline {
entry:
%coord_v4 = call <4 x float> @__clc_v4f_from_v2f(<2 x float> %coord)
%smp_id = call i32 @llvm.OpenCL.sampler.get.resource.id(i32 %sampler)
%img_id = call i32 @llvm.OpenCL.image.get.resource.id.2d(
%opencl.image2d_t addrspace(1)* %img)
%tex_id = add i32 %img_id, 2 ; First 2 IDs are reserved.
%coord_norm = and i32 %sampler, 1
%is_norm = icmp eq i32 %coord_norm, 1
br i1 %is_norm, label %NormCoord, label %UnnormCoord
NormCoord:
%data.norm = call <4 x float> @llvm.R600.tex(
<4 x float> %coord_v4,
i32 0, i32 0, i32 0, ; Offset.
i32 2, i32 %smp_id,
i32 1, i32 1, i32 1, i32 1) ; Normalized coords.
ret <4 x float> %data.norm
UnnormCoord:
%data.unnorm = call <4 x float> @llvm.R600.tex(
<4 x float> %coord_v4,
i32 0, i32 0, i32 0, ; Offset.
i32 %tex_id, i32 %smp_id,
i32 0, i32 0, i32 0, i32 0) ; Unnormalized coords.
ret <4 x float> %data.unnorm
}
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