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53 lines
1.1 KiB
LLVM
53 lines
1.1 KiB
LLVM
; RUN: llc -mtriple=amdgcn-- -verify-machineinstrs -o /dev/null %s
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; This testcase produces a situation with unused value numbers in subregister
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; liveranges that get distributed by ConnectedVNInfoEqClasses.
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define amdgpu_kernel void @hoge() {
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bb:
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%tmp = tail call i32 @llvm.amdgcn.workitem.id.x()
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br i1 undef, label %bb2, label %bb23
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bb2:
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br i1 undef, label %bb6, label %bb8
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bb6:
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%tmp7 = or i64 undef, undef
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br label %bb8
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bb8:
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%tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ]
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%tmp10 = icmp eq i32 %tmp, 0
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br i1 %tmp10, label %bb11, label %bb23
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bb11:
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br i1 undef, label %bb20, label %bb17
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bb17:
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br label %bb20
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bb20:
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%tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ]
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%tmp22 = trunc i64 %tmp21 to i32
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br label %bb23
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bb23:
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%tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ]
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br label %bb25
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bb25:
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%tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ]
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br i1 undef, label %bb25, label %bb30
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bb30:
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br i1 undef, label %bb32, label %bb34
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bb32:
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%tmp33 = zext i32 %tmp26 to i64
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br label %bb34
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bb34:
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x()
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