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llvm-project/llvm/test/Transforms/Inline/inline-constexpr-addrspacec...

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Fix assert when inlining a constantexpr addrspacecast The pointer size of the addrspacecasted pointer might not have matched, so this would have hit an assert in accumulateConstantOffset. I think this was here to allow constant folding of a load of an addrspacecasted constant. Accumulating the offset through the addrspacecast doesn't make much sense, so something else is necessary to allow folding the load through this cast. llvm-svn: 243300
2015-07-28 02:31:03 +08:00
; RUN: opt -S -inline < %s | FileCheck %s
target datalayout = "e-p3:32:32-p4:64:64-n32"
@lds = internal addrspace(3) global [64 x i64] zeroinitializer
; CHECK-LABEL: @constexpr_addrspacecast_ptr_size_change(
; CHECK: load i64, i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* addrspacecast (i64 addrspace(3)* getelementptr inbounds ([64 x i64], [64 x i64] addrspace(3)* @lds, i32 0, i32 0) to i64 addrspace(4)*), i64 undef)
; CHECK-NEXT: br
define void @constexpr_addrspacecast_ptr_size_change() #0 {
%tmp0 = call i32 @foo(i64 addrspace(4)* addrspacecast (i64 addrspace(3)* getelementptr inbounds ([64 x i64], [64 x i64] addrspace(3)* @lds, i32 0, i32 0) to i64 addrspace(4)*)) #1
ret void
}
define i32 @foo(i64 addrspace(4)* %arg) #1 {
bb:
%tmp = getelementptr i64, i64 addrspace(4)* %arg, i64 undef
%tmp1 = load i64, i64 addrspace(4)* %tmp
br i1 undef, label %bb2, label %bb3
bb2:
store i64 0, i64 addrspace(4)* %tmp
br label %bb3
bb3:
unreachable
}
attributes #0 = { nounwind }
attributes #1 = { alwaysinline nounwind }