31 lines
697 B
LLVM
31 lines
697 B
LLVM
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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declare void @bar()
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declare void @baz()
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; Check that dereferenceable metadata is combined
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; CHECK-LABEL: cont:
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; CHECK: load ptr, ptr
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; CHECK-SAME: !dereferenceable ![[DEREF:[0-9]+]]
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define ptr @test_phi_combine_load_metadata(i1 %c, ptr dereferenceable(8) %p1, ptr dereferenceable(8) %p2) {
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br i1 %c, label %t, label %f
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t:
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call void @bar()
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%v1 = load ptr, ptr %p1, align 8, !dereferenceable !0
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br label %cont
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f:
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call void @baz()
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%v2 = load ptr, ptr %p2, align 8, !dereferenceable !1
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br label %cont
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cont:
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%res = phi ptr [ %v1, %t ], [ %v2, %f ]
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ret ptr %res
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}
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; CHECK: ![[DEREF]] = !{i64 8}
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!0 = !{i64 8}
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!1 = !{i64 16}
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