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80f0208e78
The verifier follows GlobalAlias operands so that it can detect cycles of alias definitions. It was doing this in a way that caused it to also recurse through initializers for the GlobalValue aliasees, and it would fail when an initializer refers to a global that is a declaration and not a definition. This patch causes it to stop recursing when it hits a global definition. <rdar://problem/17277451> llvm-svn: 210734
32 lines
798 B
LLVM
32 lines
798 B
LLVM
; RUN: not llvm-as %s -o /dev/null 2>&1 | FileCheck %s
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declare void @f()
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@fa = alias void ()* @f
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; CHECK: Alias must point to a definition
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; CHECK-NEXT: @fa
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@g = external global i32
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@ga = alias i32* @g
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; CHECK: Alias must point to a definition
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; CHECK-NEXT: @ga
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; References to a global declaration from an initializer are OK.
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@gptr = global i32* @g
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@gptr_a = alias i32** @gptr
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; CHECK-NOT: Alias must point to a definition
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@test2_a = alias i32* @test2_b
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@test2_b = alias i32* @test2_a
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; CHECK: Aliases cannot form a cycle
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; CHECK-NEXT: i32* @test2_a
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; CHECK-NEXT: Aliases cannot form a cycle
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; CHECK-NEXT: i32* @test2_b
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@test3_a = global i32 42
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@test3_b = alias weak i32* @test3_a
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@test3_c = alias i32* @test3_b
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; CHECK: Alias cannot point to a weak alias
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; CHECK-NEXT: i32* @test3_c
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