533b7c1f6c
As long as aliasee has `@llvm.used` or `@llvm.compiler.used` references, we cannot do the related replace or delete operations. Even if it is a Local Linkage, we cannot infer if there is no other use for it, such as asm or other future added cases. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D145293
28 lines
1.3 KiB
LLVM
28 lines
1.3 KiB
LLVM
; RUN: opt -S -passes=globalopt < %s | FileCheck %s
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target datalayout = "p:32:32:32-p1:16:16:16"
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@c = hidden addrspace(1) global i8 42
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@i = internal addrspace(1) global i8 42
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; CHECK: @i = internal addrspace(1) global i8 42
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@llvm.used = appending global [1 x ptr] [ptr addrspacecast (ptr addrspace(1) @ca to ptr)], section "llvm.metadata"
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; CHECK-DAG: @llvm.used = appending global [1 x ptr] [ptr addrspacecast (ptr addrspace(1) @ca to ptr)], section "llvm.metadata"
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@llvm.compiler.used = appending global [2 x ptr] [ptr addrspacecast(ptr addrspace(1) @ia to ptr), ptr addrspacecast (ptr addrspace(1) @i to ptr)], section "llvm.metadata"
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; CHECK-DAG: @llvm.compiler.used = appending global [2 x ptr] [ptr addrspacecast (ptr addrspace(1) @i to ptr), ptr addrspacecast (ptr addrspace(1) @ia to ptr)], section "llvm.metadata"
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@sameAsUsed = global [1 x ptr] [ptr addrspacecast(ptr addrspace(1) @ca to ptr)]
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; CHECK-DAG: @sameAsUsed = local_unnamed_addr global [1 x ptr] [ptr addrspacecast (ptr addrspace(1) @c to ptr)]
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@ia = internal alias i8, ptr addrspace(1) @i
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; CHECK: @ia = internal alias i8, ptr addrspace(1) @i
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@ca = internal alias i8, ptr addrspace(1) @c
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; CHECK: @ca = internal alias i8, ptr addrspace(1) @c
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define ptr addrspace(1) @h() {
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ret ptr addrspace(1) @ca
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}
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