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Differential D24805 Diff 100231 llvm/trunk/test/Transforms/GVNSink/struct.ll

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				; RUN: opt -gvn-sink -S < %s \| FileCheck %s

				%struct = type {i32, i32}
				%struct2 = type { [ 2 x i32], i32 }

				; Struct indices cannot be variant.

				; CHECK-LABEL: @f() {
				; CHECK: getelementptr
				; CHECK: getelementptr
				define void @f() {
				bb:
				br i1 undef, label %bb2, label %bb1

				bb1: ; preds = %bb
				%tmp = getelementptr inbounds %struct, %struct* null, i64 0, i32 1
				br label %bb4

				bb2: ; preds = %bb
				%tmp3 = getelementptr inbounds %struct, %struct* null, i64 0, i32 0
				br label %bb4

				bb4: ; preds = %bb2, %bb1
				%tmp5 = phi i32 [ 1, %bb1 ], [ 0, %bb2 ]
				ret void
				}

				; Struct indices cannot be variant.

				; CHECK-LABEL: @g() {
				; CHECK: getelementptr
				; CHECK: getelementptr
				define void @g() {
				bb:
				br i1 undef, label %bb2, label %bb1

				bb1: ; preds = %bb
				%tmp = getelementptr inbounds %struct2, %struct2* null, i64 0, i32 0, i32 1
				br label %bb4

				bb2: ; preds = %bb
				%tmp3 = getelementptr inbounds %struct2, %struct2* null, i64 0, i32 0, i32 0
				br label %bb4

				bb4: ; preds = %bb2, %bb1
				%tmp5 = phi i32 [ 1, %bb1 ], [ 0, %bb2 ]
				ret void
				}


				; ... but the first parameter to a GEP can.

				; CHECK-LABEL: @h() {
				; CHECK: getelementptr
				; CHECK-NOT: getelementptr
				define void @h() {
				bb:
				br i1 undef, label %bb2, label %bb1

				bb1: ; preds = %bb
				%tmp = getelementptr inbounds %struct, %struct* null, i32 0, i32 0
				br label %bb4

				bb2: ; preds = %bb
				%tmp3 = getelementptr inbounds %struct, %struct* null, i32 1, i32 0
				br label %bb4

				bb4: ; preds = %bb2, %bb1
				%tmp5 = phi i32 [ 0, %bb1 ], [ 1, %bb2 ]
				ret void
				}
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