From 99f79cbf31cc6ccdfa1aed253a64c5e8012f4ef7 Mon Sep 17 00:00:00 2001
From: Philip Reames <listmail@philipreames.com>
Date: Fri, 4 Dec 2020 15:12:16 -0800
Subject: [PATCH] [test] precommit test for D92698

---
 .../test/Analysis/ValueTracking/known-non-equal.ll | 128 ++++++++++++++++++++-
 1 file changed, 124 insertions(+), 4 deletions(-)

diff --git a/llvm/test/Analysis/ValueTracking/known-non-equal.ll b/llvm/test/Analysis/ValueTracking/known-non-equal.ll
index d28b3f4..ae2251b 100644
--- a/llvm/test/Analysis/ValueTracking/known-non-equal.ll
+++ b/llvm/test/Analysis/ValueTracking/known-non-equal.ll
@@ -1,20 +1,140 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -instsimplify < %s -S | FileCheck %s
 
-; CHECK: define i1 @test
 define i1 @test(i8* %pq, i8 %B) {
+; CHECK-LABEL: @test(
+; CHECK-NEXT:    ret i1 false
+;
   %q = load i8, i8* %pq, !range !0 ; %q is known nonzero; no known bits
   %A = add nsw i8 %B, %q
   %cmp = icmp eq i8 %A, %B
-  ; CHECK: ret i1 false
   ret i1 %cmp
 }
 
-; CHECK: define i1 @test2
 define i1 @test2(i8 %a, i8 %b) {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    ret i1 false
+;
   %A = or i8 %a, 2    ; %A[1] = 1
   %B = and i8 %b, -3  ; %B[1] = 0
   %cmp = icmp eq i8 %A, %B ; %A[1] and %B[1] are contradictory.
-  ; CHECK: ret i1 false
+  ret i1 %cmp
+}
+
+define i1 @test3(i8 %B) {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    ret i1 false
+;
+  %A = add nsw i8 %B, 1
+  %cmp = icmp eq i8 %A, %B
+  ret i1 %cmp
+}
+
+define i1 @sext(i8 %B) {
+; CHECK-LABEL: @sext(
+; CHECK-NEXT:    ret i1 false
+;
+  %A = add nsw i8 %B, 1
+  %A.cast = sext i8 %A to i32
+  %B.cast = sext i8 %B to i32
+  %cmp = icmp eq i32 %A.cast, %B.cast
+  ret i1 %cmp
+}
+
+define i1 @zext(i8 %B) {
+; CHECK-LABEL: @zext(
+; CHECK-NEXT:    ret i1 false
+;
+  %A = add nsw i8 %B, 1
+  %A.cast = zext i8 %A to i32
+  %B.cast = zext i8 %B to i32
+  %cmp = icmp eq i32 %A.cast, %B.cast
+  ret i1 %cmp
+}
+
+define i1 @inttoptr(i32 %B) {
+; CHECK-LABEL: @inttoptr(
+; CHECK-NEXT:    [[A:%.*]] = add nsw i32 [[B:%.*]], 1
+; CHECK-NEXT:    [[A_CAST:%.*]] = inttoptr i32 [[A]] to i8*
+; CHECK-NEXT:    [[B_CAST:%.*]] = inttoptr i32 [[B]] to i8*
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8* [[A_CAST]], [[B_CAST]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %A = add nsw i32 %B, 1
+  %A.cast = inttoptr i32 %A to i8*
+  %B.cast = inttoptr i32 %B to i8*
+  %cmp = icmp eq i8* %A.cast, %B.cast
+  ret i1 %cmp
+}
+
+define i1 @ptrtoint(i32* %B) {
+; CHECK-LABEL: @ptrtoint(
+; CHECK-NEXT:    [[A:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 1
+; CHECK-NEXT:    [[A_CAST:%.*]] = ptrtoint i32* [[A]] to i32
+; CHECK-NEXT:    [[B_CAST:%.*]] = ptrtoint i32* [[B]] to i32
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[A_CAST]], [[B_CAST]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %A = getelementptr inbounds i32, i32* %B, i32 1
+  %A.cast = ptrtoint i32* %A to i32
+  %B.cast = ptrtoint i32* %B to i32
+  %cmp = icmp eq i32 %A.cast, %B.cast
+  ret i1 %cmp
+}
+
+define i1 @add1(i8 %B, i8 %C) {
+; CHECK-LABEL: @add1(
+; CHECK-NEXT:    ret i1 false
+;
+  %A = add i8 %B, 1
+  %A.op = add i8 %A, %C
+  %B.op = add i8 %B, %C
+
+  %cmp = icmp eq i8 %A.op, %B.op
+  ret i1 %cmp
+}
+
+define i1 @add2(i8 %B, i8 %C) {
+; CHECK-LABEL: @add2(
+; CHECK-NEXT:    ret i1 false
+;
+  %A = add i8 %B, 1
+  %A.op = add i8 %C, %A
+  %B.op = add i8 %C, %B
+
+  %cmp = icmp eq i8 %A.op, %B.op
+  ret i1 %cmp
+}
+
+define i1 @sub1(i8 %B, i8 %C) {
+; CHECK-LABEL: @sub1(
+; CHECK-NEXT:    [[A:%.*]] = add i8 [[B:%.*]], 1
+; CHECK-NEXT:    [[A_OP:%.*]] = sub i8 [[A]], [[C:%.*]]
+; CHECK-NEXT:    [[B_OP:%.*]] = sub i8 [[B]], [[C]]
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8 [[A_OP]], [[B_OP]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %A = add i8 %B, 1
+  %A.op = sub i8 %A, %C
+  %B.op = sub i8 %B, %C
+
+  %cmp = icmp eq i8 %A.op, %B.op
+  ret i1 %cmp
+}
+
+define i1 @sub2(i8 %B, i8 %C) {
+; CHECK-LABEL: @sub2(
+; CHECK-NEXT:    [[A:%.*]] = add i8 [[B:%.*]], 1
+; CHECK-NEXT:    [[A_OP:%.*]] = sub i8 [[C:%.*]], [[A]]
+; CHECK-NEXT:    [[B_OP:%.*]] = sub i8 [[C]], [[B]]
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8 [[A_OP]], [[B_OP]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %A = add i8 %B, 1
+  %A.op = sub i8 %C, %A
+  %B.op = sub i8 %C, %B
+
+  %cmp = icmp eq i8 %A.op, %B.op
   ret i1 %cmp
 }
 
-- 
2.7.4