| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| @G1 = global i32 0 |
| @G2 = global i32 0 |
| |
| define i1 @test0(i1 %A) { |
| ; CHECK-LABEL: @test0( |
| ; CHECK-NEXT: ret i1 %A |
| ; |
| %B = xor i1 %A, false |
| ret i1 %B |
| } |
| |
| define i32 @test1(i32 %A) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: ret i32 %A |
| ; |
| %B = xor i32 %A, 0 |
| ret i32 %B |
| } |
| |
| define i1 @test2(i1 %A) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %B = xor i1 %A, %A |
| ret i1 %B |
| } |
| |
| define i32 @test3(i32 %A) { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| %B = xor i32 %A, %A |
| ret i32 %B |
| } |
| |
| define i32 @test4(i32 %A) { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: ret i32 -1 |
| ; |
| %NotA = xor i32 -1, %A |
| %B = xor i32 %A, %NotA |
| ret i32 %B |
| } |
| |
| define i32 @test5(i32 %A) { |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: [[TMP1:%.*]] = and i32 %A, -124 |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| %t1 = or i32 %A, 123 |
| %r = xor i32 %t1, 123 |
| ret i32 %r |
| } |
| |
| define i8 @test6(i8 %A) { |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: ret i8 %A |
| ; |
| %B = xor i8 %A, 17 |
| %C = xor i8 %B, 17 |
| ret i8 %C |
| } |
| |
| define i32 @test7(i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: [[A1:%.*]] = and i32 %A, 7 |
| ; CHECK-NEXT: [[B1:%.*]] = and i32 %B, 128 |
| ; CHECK-NEXT: [[C11:%.*]] = or i32 [[A1]], [[B1]] |
| ; CHECK-NEXT: ret i32 [[C11]] |
| ; |
| %A1 = and i32 %A, 7 |
| %B1 = and i32 %B, 128 |
| %C1 = xor i32 %A1, %B1 |
| ret i32 %C1 |
| } |
| |
| define i8 @test8(i1 %c) { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: br i1 %c, label %False, label %True |
| ; CHECK: True: |
| ; CHECK-NEXT: ret i8 1 |
| ; CHECK: False: |
| ; CHECK-NEXT: ret i8 3 |
| ; |
| %d = xor i1 %c, true |
| br i1 %d, label %True, label %False |
| |
| True: |
| ret i8 1 |
| |
| False: |
| ret i8 3 |
| } |
| |
| define i1 @test9(i8 %A) { |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i8 %A, 89 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %B = xor i8 %A, 123 |
| %C = icmp eq i8 %B, 34 |
| ret i1 %C |
| } |
| |
| define i8 @test10(i8 %A) { |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NEXT: [[B:%.*]] = and i8 %A, 3 |
| ; CHECK-NEXT: [[C1:%.*]] = or i8 [[B]], 4 |
| ; CHECK-NEXT: ret i8 [[C1]] |
| ; |
| %B = and i8 %A, 3 |
| %C = xor i8 %B, 4 |
| ret i8 %C |
| } |
| |
| define i8 @test11(i8 %A) { |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NEXT: [[B:%.*]] = and i8 %A, -13 |
| ; CHECK-NEXT: [[TMP1:%.*]] = or i8 [[B]], 8 |
| ; CHECK-NEXT: ret i8 [[TMP1]] |
| ; |
| %B = or i8 %A, 12 |
| %C = xor i8 %B, 4 |
| ret i8 %C |
| } |
| |
| define i1 @test12(i8 %A) { |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 %A, 4 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %B = xor i8 %A, 4 |
| %c = icmp ne i8 %B, 0 |
| ret i1 %c |
| } |
| |
| define i1 @test13(i8 %A, i8 %B) { |
| ; CHECK-LABEL: @test13( |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 %A, %B |
| ; CHECK-NEXT: ret i1 [[TMP1]] |
| ; |
| %C = icmp ult i8 %A, %B |
| %D = icmp ugt i8 %A, %B |
| %E = xor i1 %C, %D |
| ret i1 %E |
| } |
| |
| define i1 @test14(i8 %A, i8 %B) { |
| ; CHECK-LABEL: @test14( |
| ; CHECK-NEXT: ret i1 true |
| ; |
| %C = icmp eq i8 %A, %B |
| %D = icmp ne i8 %B, %A |
| %E = xor i1 %C, %D |
| ret i1 %E |
| } |
| |
| define i32 @test15(i32 %A) { |
| ; CHECK-LABEL: @test15( |
| ; CHECK-NEXT: [[C:%.*]] = sub i32 0, %A |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| %B = add i32 %A, -1 |
| %C = xor i32 %B, -1 |
| ret i32 %C |
| } |
| |
| define i32 @test16(i32 %A) { |
| ; CHECK-LABEL: @test16( |
| ; CHECK-NEXT: [[C:%.*]] = sub i32 -124, %A |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| %B = add i32 %A, 123 |
| %C = xor i32 %B, -1 |
| ret i32 %C |
| } |
| |
| define i32 @test17(i32 %A) { |
| ; CHECK-LABEL: @test17( |
| ; CHECK-NEXT: [[C:%.*]] = add i32 %A, -124 |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| %B = sub i32 123, %A |
| %C = xor i32 %B, -1 |
| ret i32 %C |
| } |
| |
| define i32 @test18(i32 %A) { |
| ; CHECK-LABEL: @test18( |
| ; CHECK-NEXT: [[C:%.*]] = add i32 %A, 124 |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| %B = xor i32 %A, -1 |
| %C = sub i32 123, %B |
| ret i32 %C |
| } |
| |
| define i32 @test19(i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test19( |
| ; CHECK-NEXT: ret i32 %B |
| ; |
| %C = xor i32 %A, %B |
| %D = xor i32 %C, %A |
| ret i32 %D |
| } |
| |
| define void @test20(i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test20( |
| ; CHECK-NEXT: store i32 %B, i32* @G1, align 4 |
| ; CHECK-NEXT: store i32 %A, i32* @G2, align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| %t2 = xor i32 %B, %A |
| %t5 = xor i32 %t2, %B |
| %t8 = xor i32 %t5, %t2 |
| store i32 %t8, i32* @G1 |
| store i32 %t5, i32* @G2 |
| ret void |
| } |
| |
| define i32 @test21(i1 %C, i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test21( |
| ; CHECK-NEXT: [[D:%.*]] = select i1 %C, i32 %B, i32 %A |
| ; CHECK-NEXT: ret i32 [[D]] |
| ; |
| %C2 = xor i1 %C, true |
| %D = select i1 %C2, i32 %A, i32 %B |
| ret i32 %D |
| } |
| |
| define i32 @test22(i1 %X) { |
| ; CHECK-LABEL: @test22( |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext i1 %X to i32 |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| %Y = xor i1 %X, true |
| %Z = zext i1 %Y to i32 |
| %Q = xor i32 %Z, 1 |
| ret i32 %Q |
| } |
| |
| ; Look through a zext between xors. |
| |
| define i32 @fold_zext_xor_sandwich(i1 %X) { |
| ; CHECK-LABEL: @fold_zext_xor_sandwich( |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext i1 %X to i32 |
| ; CHECK-NEXT: [[Q:%.*]] = xor i32 [[TMP1]], 3 |
| ; CHECK-NEXT: ret i32 [[Q]] |
| ; |
| %Y = xor i1 %X, true |
| %Z = zext i1 %Y to i32 |
| %Q = xor i32 %Z, 2 |
| ret i32 %Q |
| } |
| |
| define <2 x i32> @fold_zext_xor_sandwich_vec(<2 x i1> %X) { |
| ; CHECK-LABEL: @fold_zext_xor_sandwich_vec( |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i1> %X to <2 x i32> |
| ; CHECK-NEXT: [[Q:%.*]] = xor <2 x i32> [[TMP1]], <i32 3, i32 3> |
| ; CHECK-NEXT: ret <2 x i32> [[Q]] |
| ; |
| %Y = xor <2 x i1> %X, <i1 true, i1 true> |
| %Z = zext <2 x i1> %Y to <2 x i32> |
| %Q = xor <2 x i32> %Z, <i32 2, i32 2> |
| ret <2 x i32> %Q |
| } |
| |
| define i1 @test23(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @test23( |
| ; CHECK-NEXT: [[T4:%.*]] = icmp eq i32 %b, 0 |
| ; CHECK-NEXT: ret i1 [[T4]] |
| ; |
| %t2 = xor i32 %b, %a |
| %t4 = icmp eq i32 %t2, %a |
| ret i1 %t4 |
| } |
| |
| define i1 @test24(i32 %c, i32 %d) { |
| ; CHECK-LABEL: @test24( |
| ; CHECK-NEXT: [[T4:%.*]] = icmp ne i32 %d, 0 |
| ; CHECK-NEXT: ret i1 [[T4]] |
| ; |
| %t2 = xor i32 %d, %c |
| %t4 = icmp ne i32 %t2, %c |
| ret i1 %t4 |
| } |
| |
| define i32 @test25(i32 %g, i32 %h) { |
| ; CHECK-LABEL: @test25( |
| ; CHECK-NEXT: [[T4:%.*]] = and i32 %h, %g |
| ; CHECK-NEXT: ret i32 [[T4]] |
| ; |
| %h2 = xor i32 %h, -1 |
| %t2 = and i32 %h2, %g |
| %t4 = xor i32 %t2, %g |
| ret i32 %t4 |
| } |
| |
| define i32 @test26(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @test26( |
| ; CHECK-NEXT: [[T4:%.*]] = and i32 %a, %b |
| ; CHECK-NEXT: ret i32 [[T4]] |
| ; |
| %b2 = xor i32 %b, -1 |
| %t2 = xor i32 %a, %b2 |
| %t4 = and i32 %t2, %a |
| ret i32 %t4 |
| } |
| |
| define i32 @test27(i32 %b, i32 %c, i32 %d) { |
| ; CHECK-LABEL: @test27( |
| ; CHECK-NEXT: [[T6:%.*]] = icmp eq i32 %b, %c |
| ; CHECK-NEXT: [[T7:%.*]] = zext i1 [[T6]] to i32 |
| ; CHECK-NEXT: ret i32 [[T7]] |
| ; |
| %t2 = xor i32 %d, %b |
| %t5 = xor i32 %d, %c |
| %t6 = icmp eq i32 %t2, %t5 |
| %t7 = zext i1 %t6 to i32 |
| ret i32 %t7 |
| } |
| |
| define i32 @test28(i32 %indvar) { |
| ; CHECK-LABEL: @test28( |
| ; CHECK-NEXT: [[T214:%.*]] = add i32 %indvar, 1 |
| ; CHECK-NEXT: ret i32 [[T214]] |
| ; |
| %t7 = add i32 %indvar, -2147483647 |
| %t214 = xor i32 %t7, -2147483648 |
| ret i32 %t214 |
| } |