[llvm] r284244 - [InstCombine] auto-generate checks

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Fri Oct 14 10:41:25 2016
New Revision: 284244

URL: http://llvm.org/viewvc/llvm-project?rev=284244&view=rev
Log:
[InstCombine] auto-generate checks

Modified:
    llvm/trunk/test/Transforms/InstCombine/sub-xor.ll

Modified: llvm/trunk/test/Transforms/InstCombine/sub-xor.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/sub-xor.ll?rev=284244&r1=284243&r2=284244&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/sub-xor.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/sub-xor.ll Fri Oct 14 10:41:25 2016
@@ -1,47 +1,49 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -instcombine -S < %s | FileCheck %s
 
-define i32 @test1(i32 %x) nounwind {
+define i32 @test1(i32 %x) {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    [[AND:%.*]] = and i32 %x, 31
+; CHECK-NEXT:    [[SUB:%.*]] = xor i32 [[AND]], 63
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
   %and = and i32 %x, 31
   %sub = sub i32 63, %and
   ret i32 %sub
-
-; CHECK-LABEL: @test1(
-; CHECK-NEXT: and i32 %x, 31
-; CHECK-NEXT: xor i32 %and, 63
-; CHECK-NEXT: ret
 }
 
 declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone
 
 define i32 @test2(i32 %x) nounwind {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    [[COUNT:%.*]] = tail call i32 @llvm.ctlz.i32(i32 %x, i1 true) #0
+; CHECK-NEXT:    [[SUB:%.*]] = xor i32 [[COUNT]], 31
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
   %count = tail call i32 @llvm.ctlz.i32(i32 %x, i1 true) nounwind readnone
   %sub = sub i32 31, %count
   ret i32 %sub
-
-; CHECK-LABEL: @test2(
-; CHECK-NEXT: ctlz
-; CHECK-NEXT: xor i32 %count, 31
-; CHECK-NEXT: ret
 }
 
-define i32 @test3(i32 %x) nounwind {
+define i32 @test3(i32 %x) {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    [[AND:%.*]] = and i32 %x, 31
+; CHECK-NEXT:    [[ADD:%.*]] = sub nsw i32 73, [[AND]]
+; CHECK-NEXT:    ret i32 [[ADD]]
+;
   %and = and i32 %x, 31
   %sub = xor i32 31, %and
   %add = add i32 %sub, 42
   ret i32 %add
-
-; CHECK-LABEL: @test3(
-; CHECK-NEXT: and i32 %x, 31
-; CHECK-NEXT: sub nsw i32 73, %and
-; CHECK-NEXT: ret
 }
 
-define i32 @test4(i32 %x) nounwind {
+define i32 @test4(i32 %x) {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:    [[ADD:%.*]] = add i32 %x, -2147483606
+; CHECK-NEXT:    ret i32 [[ADD]]
+;
   %sub = xor i32 %x, 2147483648
   %add = add i32 %sub, 42
   ret i32 %add
-
-; CHECK-LABEL: @test4(
-; CHECK-NEXT: add i32 %x, -2147483606
-; CHECK-NEXT: ret
 }
+