[InstCombine] Add tests for PR44423 and PR44425; NFC (11552433) · Commits · llvm-doe / llvm-project

llvm/test/Transforms/InstCombine/getelementptr.ll

+40 −0

Original line number	Diff line number	Diff line
		@@ -1168,3 +1168,43 @@ define <2 x i32> @PR32414(i32* %ptr) {
		%tmp1 = getelementptr inbounds i32, i32* %tmp0, <2 x i64> <i64 0, i64 1>
		ret <2 x i32*> %tmp1
		}

		define i32* @test_bitcast_nzgep([1 x i32]* %base, i64 %idx) {
		; CHECK-LABEL: @test_bitcast_nzgep(
		; CHECK-NEXT: [[PTR:%.]] = getelementptr [1 x i32], [1 x i32] [[BASE:%.]], i64 0, i64 [[IDX:%.]]
		; CHECK-NEXT: ret i32* [[PTR]]
		;
		%base2 = bitcast [1 x i32]* %base to i32*
		%ptr = getelementptr inbounds i32, i32* %base2, i64 %idx
		ret i32* %ptr
		}

		define i32* @test_zgep_nzgep([1 x i32]* %base, i64 %idx) {
		; CHECK-LABEL: @test_zgep_nzgep(
		; CHECK-NEXT: [[PTR:%.]] = getelementptr [1 x i32], [1 x i32] [[BASE:%.]], i64 0, i64 [[IDX:%.]]
		; CHECK-NEXT: ret i32* [[PTR]]
		;
		%base2 = getelementptr [1 x i32], [1 x i32]* %base, i64 0, i64 0
		%ptr = getelementptr inbounds i32, i32* %base2, i64 %idx
		ret i32* %ptr
		}

		define i32* @test_nzgep_zgep([1 x i32]* %base, i64 %idx) {
		; CHECK-LABEL: @test_nzgep_zgep(
		; CHECK-NEXT: [[PTR:%.]] = getelementptr [1 x i32], [1 x i32] [[BASE:%.]], i64 [[IDX:%.]], i64 0
		; CHECK-NEXT: ret i32* [[PTR]]
		;
		%base2 = getelementptr inbounds [1 x i32], [1 x i32]* %base, i64 %idx
		%ptr = getelementptr [1 x i32], [1 x i32]* %base2, i64 0, i64 0
		ret i32* %ptr
		}

		define i32* @test_gep_inbounds_of_gep(i32* %base) {
		; CHECK-LABEL: @test_gep_inbounds_of_gep(
		; CHECK-NEXT: [[PTR2:%.]] = getelementptr inbounds i32, i32 [[BASE:%.*]], i64 8
		; CHECK-NEXT: ret i32* [[PTR2]]
		;
		%ptr1 = getelementptr i32, i32* %base, i64 4
		%ptr2 = getelementptr inbounds i32, i32* %ptr1, i64 4
		ret i32* %ptr2
		}