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