forked from OSchip/llvm-project
29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
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; RUN: opt < %s -loop-unswitch -S | FileCheck %s
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; In cases where two address spaces do not have the same size pointer, the
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; input for the addrspacecast should not be used as a substitute for itself
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; when manipulating the pointer.
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target datalayout = "e-m:e-p:16:16-p1:32:16-i32:16-i64:16-n8:16"
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define void @foo() {
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; CHECK-LABEL: @foo
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entry:
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%arrayidx.i1 = getelementptr inbounds i16, i16* undef, i16 undef
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%arrayidx.i = addrspacecast i16* %arrayidx.i1 to i16 addrspace(1)*
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br i1 undef, label %for.body.i, label %bar.exit
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for.body.i: ; preds = %for.body.i, %entry
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; When we call makeLoopInvariant (i.e. trivial LICM) on this load, it
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; will try to find the base object to prove deferenceability. If we look
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; through the addrspacecast, we'll fail an assertion about bitwidths matching
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; CHECK-LABEL: for.body.i
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; CHECK: %0 = load i16, i16 addrspace(1)* %arrayidx.i, align 2
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%0 = load i16, i16 addrspace(1)* %arrayidx.i, align 2
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%cmp1.i = icmp eq i16 %0, 0
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br i1 %cmp1.i, label %bar.exit, label %for.body.i
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bar.exit: ; preds = %for.body.i, %entry
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ret void
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}
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