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d5508bfe28
Change the default for `-num-shuffles` to 5 and better document the algorithm in the header docs of `verify-uselistorder`. llvm-svn: 214419
28 lines
1.2 KiB
LLVM
28 lines
1.2 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 -preserve-bc-use-list-order
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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* @A, i64 1), i64* @B)
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@C = global i1 icmp eq (i64* getelementptr inbounds (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* @A, i64 1), i64* getelementptr inbounds (i64* @B, i64 2))
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@D = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* getelementptr inbounds (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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