34 lines
869 B
LLVM
34 lines
869 B
LLVM
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; RUN: llc -verify-machineinstrs -o /dev/null %s
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; Check that renameDisconnectedComponents() does not create vregs without a
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; definition on every path (there should at least be IMPLICIT_DEF instructions).
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target triple = "amdgcn--"
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define amdgpu_kernel void @func() {
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B0:
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br i1 undef, label %B1, label %B2
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B1:
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br label %B2
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B2:
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%v0 = phi <4 x float> [ zeroinitializer, %B1 ], [ <float 0.0, float 0.0, float 0.0, float undef>, %B0 ]
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br i1 undef, label %B20.1, label %B20.2
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B20.1:
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br label %B20.2
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B20.2:
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%v2 = phi <4 x float> [ zeroinitializer, %B20.1 ], [ %v0, %B2 ]
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br i1 undef, label %B30.1, label %B30.2
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B30.1:
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%sub = fsub <4 x float> %v2, undef
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br label %B30.2
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B30.2:
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%v3 = phi <4 x float> [ %sub, %B30.1 ], [ %v2, %B20.2 ]
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%ve0 = extractelement <4 x float> %v3, i32 0
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store float %ve0, float addrspace(3)* undef, align 4
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ret void
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}
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