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| ; XFAIL: *
; REQUIRES: asserts
; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s
; write_register doesn't prevent us from illegally trying to write a
; vgpr value into a scalar register, but I don't think there's much we
; can do to avoid this.
declare void @llvm.write_register.i32(metadata, i32) #0
declare i32 @llvm.amdgcn.workitem.id.x() #0
declare void @llvm.amdgcn.wave.barrier() #2
define amdgpu_kernel void @write_vgpr_into_sgpr() {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
call void @llvm.write_register.i32(metadata !0, i32 %tid)
call void @llvm.amdgcn.wave.barrier() #2
ret void
}
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind }
attributes #2 = { convergent nounwind }
!0 = !{!"exec_lo"}
|