From 114e964dce9f18e8f3c25a3a4136e59ead9ae50c Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Thu, 1 Oct 2020 11:58:01 -0400
Subject: [PATCH] [InstCombine] auto-generate complete test checks; NFC

---
 .../InstCombine/bitreverse-known-bits.ll           | 36 +++++++++++++---------
 1 file changed, 22 insertions(+), 14 deletions(-)

diff --git a/llvm/test/Transforms/InstCombine/bitreverse-known-bits.ll b/llvm/test/Transforms/InstCombine/bitreverse-known-bits.ll
index cd1523a..b8702f6 100644
--- a/llvm/test/Transforms/InstCombine/bitreverse-known-bits.ll
+++ b/llvm/test/Transforms/InstCombine/bitreverse-known-bits.ll
@@ -1,11 +1,13 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -S -instcombine | FileCheck %s
 
 declare i8 @llvm.bitreverse.i8(i8)
 declare i32 @llvm.bitreverse.i32(i32)
 
-; CHECK-LABEL: @test1
-; CHECK: ret i1 true
 define i1 @test1(i32 %arg) {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    ret i1 true
+;
   %a = or i32 %arg, 4294901760
   %b = call i32 @llvm.bitreverse.i32(i32 %a)
   %and = and i32 %b, 65535
@@ -13,9 +15,10 @@ define i1 @test1(i32 %arg) {
   ret i1 %res
 }
 
-; CHECK-LABEL: @test2
-; CHECK: ret i1 true
 define i1 @test2(i32 %arg) {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    ret i1 true
+;
   %a = or i32 %arg, 1
   %b = call i32 @llvm.bitreverse.i32(i32 %a)
   %c = and i32 %b, 2147483648
@@ -24,9 +27,10 @@ define i1 @test2(i32 %arg) {
   ret i1 %res
 }
 
-; CHECK-LABEL: @test3
-; CHECK: ret i1 false
 define i1 @test3(i32 %arg) {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    ret i1 false
+;
   %a = or i32 %arg, 65536
   %b = call i32 @llvm.bitreverse.i32(i32 %a)
   %and = and i32 %b, 32768
@@ -34,18 +38,22 @@ define i1 @test3(i32 %arg) {
   ret i1 %res
 }
 
-; CHECK-LABEL: @add_bitreverse
-; Make sure we process range metadata on bitreverse
+; known bits for the bitreverse will say the result is in the range [0, 64)
+; but the metadata says [0, 16). So make sure the range metadata wins.
+;    add %reverse, 1111 0000
+; should become
+;    or  %reverse, 1111 0000
+
 define i8 @add_bitreverse(i8 %a) {
+; CHECK-LABEL: @add_bitreverse(
+; CHECK-NEXT:    [[B:%.*]] = and i8 [[A:%.*]], -4
+; CHECK-NEXT:    [[REVERSE:%.*]] = call i8 @llvm.bitreverse.i8(i8 [[B]]), [[RNG0:!range !.*]]
+; CHECK-NEXT:    [[C:%.*]] = or i8 [[REVERSE]], -16
+; CHECK-NEXT:    ret i8 [[C]]
+;
   %b = and i8 %a, 252
-  ; known bits for the bitreverse will say the result is in the range [0, 64)
-  ; but the metadata says [0, 16). So make sure the range metadata wins.
-  ;    add %reverse, 1111 0000
-  ; should become
-  ;    or  %reverse, 1111 0000
   %reverse = call i8 @llvm.bitreverse.i8(i8 %b), !range !1
   %c = add i8 %reverse, -16
-; CHECK: or i8 %reverse, -16
   ret i8 %c
 }
 !1 = !{i8 0, i8 16}
-- 
2.7.4