[llvm] r370890 - [NFC] Added a negative test for new fold

[David Bolvansky via llvm-commits]

Author: xbolva00
Date: Wed Sep  4 05:46:25 2019
New Revision: 370890

URL: http://llvm.org/viewvc/llvm-project?rev=370890&view=rev
Log:
[NFC] Added a negative test for new fold

Modified:
    llvm/trunk/test/Transforms/InstCombine/sub-and-or-not-xor.ll

Modified: llvm/trunk/test/Transforms/InstCombine/sub-and-or-not-xor.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/sub-and-or-not-xor.ll?rev=370890&r1=370889&r2=370890&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/sub-and-or-not-xor.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/sub-and-or-not-xor.ll Wed Sep  4 05:46:25 2019
@@ -99,3 +99,22 @@ define <2 x i32> @sub_to_xor_vec(<2 x i3
   %sub = sub <2 x i32> %and, %or
   ret <2 x i32> %sub
 }
+
+; Negative tests
+
+define i32 @sub_to_xor_extra_use_and_or(i32 %x, i32 %y) {
+; CHECK-LABEL: @sub_to_xor_extra_use_and_or(
+; CHECK-NEXT:    [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    call void @use(i32 [[OR]])
+; CHECK-NEXT:    [[AND:%.*]] = and i32 [[X]], [[Y]]
+; CHECK-NEXT:    call void @use(i32 [[AND]])
+; CHECK-NEXT:    [[SUB:%.*]] = sub i32 [[AND]], [[OR]]
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
+  %or = or i32 %x, %y
+  call void @use(i32 %or)
+  %and = and i32 %x, %y
+  call void @use(i32 %and)
+  %sub = sub i32 %and, %or
+  ret i32 %sub
+}