1 ; RUN: llc < %s -march=x86 -mattr=+sse2 | FileCheck %s -check-prefix=X32 2 ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64 3 ; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=X64 4 5 ; Though it is undefined, we want xor undef,undef to produce zero. 6 define <4 x i32> @test1() nounwind { 7 %tmp = xor <4 x i32> undef, undef 8 ret <4 x i32> %tmp 9 10 ; X32: test1: 11 ; X32: pxor %xmm0, %xmm0 12 ; X32: ret 13 } 14 15 ; Though it is undefined, we want xor undef,undef to produce zero. 16 define i32 @test2() nounwind{ 17 %tmp = xor i32 undef, undef 18 ret i32 %tmp 19 ; X32: test2: 20 ; X32: xorl %eax, %eax 21 ; X32: ret 22 } 23 24 define i32 @test3(i32 %a, i32 %b) nounwind { 25 entry: 26 %tmp1not = xor i32 %b, -2 27 %tmp3 = and i32 %tmp1not, %a 28 %tmp4 = lshr i32 %tmp3, 1 29 ret i32 %tmp4 30 31 ; X64: test3: 32 ; X64: notl 33 ; X64: andl 34 ; X64: shrl %eax 35 ; X64: ret 36 37 ; X32: test3: 38 ; X32: movl 8(%esp), %eax 39 ; X32: notl %eax 40 ; X32: andl 4(%esp), %eax 41 ; X32: shrl %eax 42 ; X32: ret 43 } 44 45 define i32 @test4(i32 %a, i32 %b) nounwind { 46 entry: 47 br label %bb 48 bb: 49 %b_addr.0 = phi i32 [ %b, %entry ], [ %tmp8, %bb ] 50 %a_addr.0 = phi i32 [ %a, %entry ], [ %tmp3, %bb ] 51 %tmp3 = xor i32 %a_addr.0, %b_addr.0 52 %tmp4not = xor i32 %tmp3, 2147483647 53 %tmp6 = and i32 %tmp4not, %b_addr.0 54 %tmp8 = shl i32 %tmp6, 1 55 %tmp10 = icmp eq i32 %tmp8, 0 56 br i1 %tmp10, label %bb12, label %bb 57 bb12: 58 ret i32 %tmp3 59 60 ; X64: test4: 61 ; X64: notl [[REG:%[a-z]+]] 62 ; X64: andl {{.*}}[[REG]] 63 ; X32: test4: 64 ; X32: notl [[REG:%[a-z]+]] 65 ; X32: andl {{.*}}[[REG]] 66 } 67 68 define i16 @test5(i16 %a, i16 %b) nounwind { 69 entry: 70 br label %bb 71 bb: 72 %b_addr.0 = phi i16 [ %b, %entry ], [ %tmp8, %bb ] 73 %a_addr.0 = phi i16 [ %a, %entry ], [ %tmp3, %bb ] 74 %tmp3 = xor i16 %a_addr.0, %b_addr.0 75 %tmp4not = xor i16 %tmp3, 32767 76 %tmp6 = and i16 %tmp4not, %b_addr.0 77 %tmp8 = shl i16 %tmp6, 1 78 %tmp10 = icmp eq i16 %tmp8, 0 79 br i1 %tmp10, label %bb12, label %bb 80 bb12: 81 ret i16 %tmp3 82 ; X64: test5: 83 ; X64: notl [[REG:%[a-z]+]] 84 ; X64: andl {{.*}}[[REG]] 85 ; X32: test5: 86 ; X32: notl [[REG:%[a-z]+]] 87 ; X32: andl {{.*}}[[REG]] 88 } 89 90 define i8 @test6(i8 %a, i8 %b) nounwind { 91 entry: 92 br label %bb 93 bb: 94 %b_addr.0 = phi i8 [ %b, %entry ], [ %tmp8, %bb ] 95 %a_addr.0 = phi i8 [ %a, %entry ], [ %tmp3, %bb ] 96 %tmp3 = xor i8 %a_addr.0, %b_addr.0 97 %tmp4not = xor i8 %tmp3, 127 98 %tmp6 = and i8 %tmp4not, %b_addr.0 99 %tmp8 = shl i8 %tmp6, 1 100 %tmp10 = icmp eq i8 %tmp8, 0 101 br i1 %tmp10, label %bb12, label %bb 102 bb12: 103 ret i8 %tmp3 104 ; X64: test6: 105 ; X64: notb [[REG:%[a-z]+]] 106 ; X64: andb {{.*}}[[REG]] 107 ; X32: test6: 108 ; X32: notb [[REG:%[a-z]+]] 109 ; X32: andb {{.*}}[[REG]] 110 } 111 112 define i32 @test7(i32 %a, i32 %b) nounwind { 113 entry: 114 br label %bb 115 bb: 116 %b_addr.0 = phi i32 [ %b, %entry ], [ %tmp8, %bb ] 117 %a_addr.0 = phi i32 [ %a, %entry ], [ %tmp3, %bb ] 118 %tmp3 = xor i32 %a_addr.0, %b_addr.0 119 %tmp4not = xor i32 %tmp3, 2147483646 120 %tmp6 = and i32 %tmp4not, %b_addr.0 121 %tmp8 = shl i32 %tmp6, 1 122 %tmp10 = icmp eq i32 %tmp8, 0 123 br i1 %tmp10, label %bb12, label %bb 124 bb12: 125 ret i32 %tmp3 126 ; X64: test7: 127 ; X64: xorl $2147483646, [[REG:%[a-z]+]] 128 ; X64: andl {{.*}}[[REG]] 129 ; X32: test7: 130 ; X32: xorl $2147483646, [[REG:%[a-z]+]] 131 ; X32: andl {{.*}}[[REG]] 132 } 133 134 define i32 @test8(i32 %a) nounwind { 135 ; rdar://7553032 136 entry: 137 %t1 = sub i32 0, %a 138 %t2 = add i32 %t1, -1 139 ret i32 %t2 140 ; X64: test8: 141 ; X64: notl {{%eax|%edi|%ecx}} 142 ; X32: test8: 143 ; X32: notl %eax 144 } 145
