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bf0a0e516e
Not sure why this logic seems to be repeated in 2 different places, one called by the other. On AMDGPU addrspace(3) globals start allocating at 0, so these checks will be incorrect (not that real code actually tries to compare these addresses) llvm-svn: 335649
62 lines
3.2 KiB
LLVM
62 lines
3.2 KiB
LLVM
; This test checks to make sure that constant exprs don't fold in some simple
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; situations
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; RUN: llvm-as < %s | llvm-dis | FileCheck %s
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; RUN: verify-uselistorder %s
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; Even give it a datalayout, to tempt folding as much as possible.
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target datalayout = "p:32:32"
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@A = global i64 0
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@B = global i64 0
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; Don't fold this. @A might really be allocated next to @B, in which case the
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; icmp should return true. It's not valid to *dereference* in @B from a pointer
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; based on @A, but icmp isn't a dereference.
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; CHECK: @C = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* @B)
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@C = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* @B)
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; Don't fold this completely away either. In theory this could be simplified
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; to only use a gep on one side of the icmp though.
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; CHECK: @D = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* getelementptr inbounds (i64, i64* @B, i64 2))
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@D = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* getelementptr inbounds (i64, i64* @B, i64 2))
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; CHECK: @E = global i64 addrspace(1)* addrspacecast (i64* @A to i64 addrspace(1)*)
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@E = global i64 addrspace(1)* addrspacecast(i64* @A to i64 addrspace(1)*)
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; Don't add an inbounds on @weak.gep, since @weak may be null.
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; CHECK: @weak.gep = global i32* getelementptr (i32, i32* @weak, i32 1)
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@weak.gep = global i32* getelementptr (i32, i32* @weak, i32 1)
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@weak = extern_weak global i32
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; An object with weak linkage cannot have it's identity determined at compile time.
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; CHECK: @F = global i1 icmp eq (i32* @weakany, i32* @glob)
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@F = global i1 icmp eq (i32* @weakany, i32* @glob)
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@weakany = weak global i32 0
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; Empty globals might end up anywhere, even on top of another global.
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; CHECK: @empty.cmp = global i1 icmp eq ([0 x i8]* @empty.1, [0 x i8]* @empty.2)
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@empty.1 = external global [0 x i8], align 1
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@empty.2 = external global [0 x i8], align 1
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@empty.cmp = global i1 icmp eq ([0 x i8]* @empty.1, [0 x i8]* @empty.2)
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@addrspace3 = internal addrspace(3) global i32 undef
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; CHECK: @no.fold.addrspace.icmp.eq.gv.null = global i1 icmp eq (i32 addrspace(3)* @addrspace3, i32 addrspace(3)* null)
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; CHECK: @no.fold.addrspace.icmp.eq.null.gv = global i1 icmp eq (i32 addrspace(3)* @addrspace3, i32 addrspace(3)* null)
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; CHECK: @no.fold.addrspace.icmp.ne.gv.null = global i1 icmp ne (i32 addrspace(3)* @addrspace3, i32 addrspace(3)* null)
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; CHECK: @no.fold.addrspace.icmp.ne.null.gv = global i1 icmp ne (i32 addrspace(3)* @addrspace3, i32 addrspace(3)* null)
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@no.fold.addrspace.icmp.eq.gv.null = global i1 icmp eq (i32 addrspace(3)* @addrspace3, i32 addrspace(3)* null)
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@no.fold.addrspace.icmp.eq.null.gv = global i1 icmp eq (i32 addrspace(3)* null, i32 addrspace(3)* @addrspace3)
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@no.fold.addrspace.icmp.ne.gv.null = global i1 icmp ne (i32 addrspace(3)* @addrspace3, i32 addrspace(3)* null)
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@no.fold.addrspace.icmp.ne.null.gv = global i1 icmp ne (i32 addrspace(3)* null, i32 addrspace(3)* @addrspace3)
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; Don't add an inbounds on @glob.a3, since it's not inbounds.
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; CHECK: @glob.a3 = alias i32, getelementptr (i32, i32* @glob.a2, i32 1)
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@glob = global i32 0
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@glob.a3 = alias i32, getelementptr (i32, i32* @glob.a2, i32 1)
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@glob.a2 = alias i32, getelementptr (i32, i32* @glob.a1, i32 1)
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@glob.a1 = alias i32, i32* @glob
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