39 lines
971 B
LLVM
39 lines
971 B
LLVM
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; Simple bit of IR to mimic CUDA's libdevice. We want to be
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; able to link with it and we need to make sure all __nvvm_reflect
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; calls are eliminated by the time PTX has been produced.
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target triple = "nvptx-unknown-cuda"
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declare i32 @__nvvm_reflect(i8*)
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@"$str" = private addrspace(1) constant [8 x i8] c"USE_MUL\00"
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define void @unused_subfunc(float %a) {
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ret void
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}
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define void @used_subfunc(float %a) {
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ret void
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}
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define float @_Z17device_mul_or_addff(float %a, float %b) {
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%reflect = call i32 @__nvvm_reflect(i8* addrspacecast (i8 addrspace(1)* getelementptr inbounds ([8 x i8], [8 x i8] addrspace(1)* @"$str", i32 0, i32 0) to i8*))
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%cmp = icmp ne i32 %reflect, 0
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br i1 %cmp, label %use_mul, label %use_add
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use_mul:
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%ret1 = fmul float %a, %b
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br label %exit
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use_add:
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%ret2 = fadd float %a, %b
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br label %exit
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exit:
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%ret = phi float [%ret1, %use_mul], [%ret2, %use_add]
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call void @used_subfunc(float %ret)
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ret float %ret
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}
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