18 lines
633 B
LLVM
18 lines
633 B
LLVM
; RUN: opt %s -mtriple amdgcn-- -analyze -divergence -use-gpu-divergence-analysis | FileCheck %s
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; CHECK: DIVERGENT: %tmp = cmpxchg volatile
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define amdgpu_kernel void @unreachable_loop(i32 %tidx) #0 {
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entry:
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unreachable
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unreachable_loop: ; preds = %do.body.i, %if.then11
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%tmp = cmpxchg volatile i32 addrspace(1)* null, i32 0, i32 0 seq_cst seq_cst
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%cmp.i = extractvalue { i32, i1 } %tmp, 1
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br i1 %cmp.i, label %unreachable_loop, label %end
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end: ; preds = %do.body.i51, %atomicAdd_g_f.exit
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unreachable
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}
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attributes #0 = { norecurse nounwind }
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