Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Analysis/Lint/check-zero-divide.ll

@@ -0,0 +1,78 @@
+; RUN: opt -lint -disable-output %s 2>&1 | FileCheck %s
+
+define <2 x i32> @use_vector_sdiv(<2 x i32> %a) nounwind {
+  %b = sdiv <2 x i32> %a, <i32 5, i32 8>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_srem(<2 x i32> %a) nounwind {
+  %b = srem <2 x i32> %a, <i32 5, i32 8>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_udiv(<2 x i32> %a) nounwind {
+  %b = udiv <2 x i32> %a, <i32 5, i32 8>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_urem(<2 x i32> %a) nounwind {
+  %b = urem <2 x i32> %a, <i32 5, i32 8>
+  ret <2 x i32> %b
+}
+
+define i32 @use_sdiv_by_zero(i32 %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv i32 %a, 0
+  %b = sdiv i32 %a, 0
+  ret i32 %b
+}
+
+define i32 @use_sdiv_by_zeroinitializer(i32 %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv i32 %a, 0
+  %b = sdiv i32 %a, zeroinitializer
+   ret i32 %b
+}
+
+define <2 x i32> @use_vector_sdiv_by_zero_x(<2 x i32> %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv <2 x i32> %a, <i32 0, i32 5>
+  %b = sdiv <2 x i32> %a, <i32 0, i32 5>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_sdiv_by_zero_y(<2 x i32> %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT:  %b = sdiv <2 x i32> %a, <i32 4, i32 0>
+  %b = sdiv <2 x i32> %a, <i32 4, i32 0>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_sdiv_by_zero_xy(<2 x i32> %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv <2 x i32> %a, zeroinitializer
+  %b = sdiv <2 x i32> %a, <i32 0, i32 0>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_sdiv_by_undef_x(<2 x i32> %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv <2 x i32> %a, <i32 undef, i32 5>
+  %b = sdiv <2 x i32> %a, <i32 undef, i32 5>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_sdiv_by_undef_y(<2 x i32> %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv <2 x i32> %a, <i32 5, i32 undef>
+  %b = sdiv <2 x i32> %a, <i32 5, i32 undef>
+  ret <2 x i32> %b
+}
+
+define <2 x i32> @use_vector_sdiv_by_undef_xy(<2 x i32> %a) nounwind {
+; CHECK: Undefined behavior: Division by zero
+; CHECK-NEXT: %b = sdiv <2 x i32> %a, undef
+  %b = sdiv <2 x i32> %a, <i32 undef, i32 undef>
+  ret <2 x i32> %b
+}
+