1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 define i64 @test_sext_zext(i16 %A) {
5 ; CHECK-LABEL: @test_sext_zext(
6 ; CHECK-NEXT: [[C2:%.*]] = zext i16 %A to i64
7 ; CHECK-NEXT: ret i64 [[C2]]
9 %c1 = zext i16 %A to i32
10 %c2 = sext i32 %c1 to i64
14 define <2 x i64> @test2(<2 x i1> %A) {
15 ; CHECK-LABEL: @test2(
16 ; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i1> %A to <2 x i64>
17 ; CHECK-NEXT: [[ZEXT:%.*]] = xor <2 x i64> [[TMP1]], <i64 1, i64 1>
18 ; CHECK-NEXT: ret <2 x i64> [[ZEXT]]
20 %xor = xor <2 x i1> %A, <i1 true, i1 true>
21 %zext = zext <2 x i1> %xor to <2 x i64>
25 define <2 x i64> @test3(<2 x i64> %A) {
26 ; CHECK-LABEL: @test3(
27 ; CHECK-NEXT: [[AND:%.*]] = and <2 x i64> %A, <i64 23, i64 42>
28 ; CHECK-NEXT: ret <2 x i64> [[AND]]
30 %trunc = trunc <2 x i64> %A to <2 x i32>
31 %and = and <2 x i32> %trunc, <i32 23, i32 42>
32 %zext = zext <2 x i32> %and to <2 x i64>
36 define <2 x i64> @test4(<2 x i64> %A) {
37 ; CHECK-LABEL: @test4(
38 ; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i64> %A, <i64 4294967295, i64 4294967295>
39 ; CHECK-NEXT: [[XOR:%.*]] = and <2 x i64> [[TMP1]], <i64 23, i64 42>
40 ; CHECK-NEXT: ret <2 x i64> [[XOR]]
42 %trunc = trunc <2 x i64> %A to <2 x i32>
43 %and = and <2 x i32> %trunc, <i32 23, i32 42>
44 %xor = xor <2 x i32> %and, <i32 23, i32 42>
45 %zext = zext <2 x i32> %xor to <2 x i64>
49 ; FIXME: If the xor was done in the smaller type, the back-to-back zexts would get combined.
51 define i64 @fold_xor_zext_sandwich(i1 %a) {
52 ; CHECK-LABEL: @fold_xor_zext_sandwich(
53 ; CHECK-NEXT: [[ZEXT1:%.*]] = zext i1 %a to i32
54 ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[ZEXT1]], 1
55 ; CHECK-NEXT: [[ZEXT2:%.*]] = zext i32 [[XOR]] to i64
56 ; CHECK-NEXT: ret i64 [[ZEXT2]]
58 %zext1 = zext i1 %a to i32
59 %xor = xor i32 %zext1, 1
60 %zext2 = zext i32 %xor to i64
64 define <2 x i64> @fold_xor_zext_sandwich_vec(<2 x i1> %a) {
65 ; CHECK-LABEL: @fold_xor_zext_sandwich_vec(
66 ; CHECK-NEXT: [[ZEXT1:%.*]] = zext <2 x i1> %a to <2 x i64>
67 ; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i64> [[ZEXT1]], <i64 1, i64 1>
68 ; CHECK-NEXT: ret <2 x i64> [[XOR]]
70 %zext1 = zext <2 x i1> %a to <2 x i32>
71 %xor = xor <2 x i32> %zext1, <i32 1, i32 1>
72 %zext2 = zext <2 x i32> %xor to <2 x i64>