1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -O3 -S < %s | FileCheck %s
3 ; RUN: opt -passes='default<O3>' -S < %s | FileCheck %s
5 ; These are tests that check for set/clear bits in a bitfield based on PR37098:
6 ; https://bugs.llvm.org/show_bug.cgi?id=37098
8 ; The initial IR from clang has been transformed by SROA, but no other passes
9 ; have run yet. In all cases, we should reduce these to a mask and compare
10 ; instead of shift/cast/logic ops.
12 ; Currently, this happens mostly through a combination of instcombine and
13 ; aggressive-instcombine. If pass ordering changes, we may have to adjust
14 ; the pattern matching in 1 or both of those passes.
16 ; Legal i32 is required to allow casting transforms that eliminate the zexts.
17 target datalayout = "n32"
19 define i32 @allclear(i32 %a) {
20 ; CHECK-LABEL: @allclear(
21 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 15
22 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 0
23 ; CHECK-NEXT: [[TMP3:%.*]] = zext i1 [[TMP2]] to i32
24 ; CHECK-NEXT: ret i32 [[TMP3]]
26 %a.sroa.0.0.trunc = trunc i32 %a to i8
27 %a.sroa.5.0.shift = lshr i32 %a, 8
28 %bf.clear = and i8 %a.sroa.0.0.trunc, 1
29 %bf.cast = zext i8 %bf.clear to i32
30 %bf.lshr = lshr i8 %a.sroa.0.0.trunc, 1
31 %bf.clear2 = and i8 %bf.lshr, 1
32 %bf.cast3 = zext i8 %bf.clear2 to i32
33 %or = or i32 %bf.cast, %bf.cast3
34 %bf.lshr5 = lshr i8 %a.sroa.0.0.trunc, 2
35 %bf.clear6 = and i8 %bf.lshr5, 1
36 %bf.cast7 = zext i8 %bf.clear6 to i32
37 %or8 = or i32 %or, %bf.cast7
38 %bf.lshr10 = lshr i8 %a.sroa.0.0.trunc, 3
39 %bf.clear11 = and i8 %bf.lshr10, 1
40 %bf.cast12 = zext i8 %bf.clear11 to i32
41 %or13 = or i32 %or8, %bf.cast12
42 %cmp = icmp eq i32 %or13, 0
43 %conv = zext i1 %cmp to i32
47 define i32 @anyset(i32 %a) {
48 ; CHECK-LABEL: @anyset(
49 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 15
50 ; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i32 [[TMP1]], 0
51 ; CHECK-NEXT: [[TMP3:%.*]] = zext i1 [[TMP2]] to i32
52 ; CHECK-NEXT: ret i32 [[TMP3]]
54 %a.sroa.0.0.trunc = trunc i32 %a to i8
55 %a.sroa.5.0.shift = lshr i32 %a, 8
56 %bf.clear = and i8 %a.sroa.0.0.trunc, 1
57 %bf.cast = zext i8 %bf.clear to i32
58 %bf.lshr = lshr i8 %a.sroa.0.0.trunc, 1
59 %bf.clear2 = and i8 %bf.lshr, 1
60 %bf.cast3 = zext i8 %bf.clear2 to i32
61 %or = or i32 %bf.cast, %bf.cast3
62 %bf.lshr5 = lshr i8 %a.sroa.0.0.trunc, 2
63 %bf.clear6 = and i8 %bf.lshr5, 1
64 %bf.cast7 = zext i8 %bf.clear6 to i32
65 %or8 = or i32 %or, %bf.cast7
66 %bf.lshr10 = lshr i8 %a.sroa.0.0.trunc, 3
67 %bf.clear11 = and i8 %bf.lshr10, 1
68 %bf.cast12 = zext i8 %bf.clear11 to i32
69 %or13 = or i32 %or8, %bf.cast12
70 %cmp = icmp ne i32 %or13, 0
71 %conv = zext i1 %cmp to i32
75 define i32 @allset(i32 %a) {
76 ; CHECK-LABEL: @allset(
77 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 15
78 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 15
79 ; CHECK-NEXT: [[TMP3:%.*]] = zext i1 [[TMP2]] to i32
80 ; CHECK-NEXT: ret i32 [[TMP3]]
82 %a.sroa.0.0.trunc = trunc i32 %a to i8
83 %a.sroa.5.0.shift = lshr i32 %a, 8
84 %bf.clear = and i8 %a.sroa.0.0.trunc, 1
85 %bf.cast = zext i8 %bf.clear to i32
86 %bf.lshr = lshr i8 %a.sroa.0.0.trunc, 1
87 %bf.clear2 = and i8 %bf.lshr, 1
88 %bf.cast3 = zext i8 %bf.clear2 to i32
89 %and = and i32 %bf.cast, %bf.cast3
90 %bf.lshr5 = lshr i8 %a.sroa.0.0.trunc, 2
91 %bf.clear6 = and i8 %bf.lshr5, 1
92 %bf.cast7 = zext i8 %bf.clear6 to i32
93 %and8 = and i32 %and, %bf.cast7
94 %bf.lshr10 = lshr i8 %a.sroa.0.0.trunc, 3
95 %bf.clear11 = and i8 %bf.lshr10, 1
96 %bf.cast12 = zext i8 %bf.clear11 to i32
97 %and13 = and i32 %and8, %bf.cast12
98 %cmp = icmp ne i32 %and13, 0
99 %conv = zext i1 %cmp to i32
103 define i32 @anyclear(i32 %a) {
104 ; CHECK-LABEL: @anyclear(
105 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 15
106 ; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i32 [[TMP1]], 15
107 ; CHECK-NEXT: [[TMP3:%.*]] = zext i1 [[TMP2]] to i32
108 ; CHECK-NEXT: ret i32 [[TMP3]]
110 %a.sroa.0.0.trunc = trunc i32 %a to i8
111 %a.sroa.5.0.shift = lshr i32 %a, 8
112 %bf.clear = and i8 %a.sroa.0.0.trunc, 1
113 %bf.cast = zext i8 %bf.clear to i32
114 %bf.lshr = lshr i8 %a.sroa.0.0.trunc, 1
115 %bf.clear2 = and i8 %bf.lshr, 1
116 %bf.cast3 = zext i8 %bf.clear2 to i32
117 %and = and i32 %bf.cast, %bf.cast3
118 %bf.lshr5 = lshr i8 %a.sroa.0.0.trunc, 2
119 %bf.clear6 = and i8 %bf.lshr5, 1
120 %bf.cast7 = zext i8 %bf.clear6 to i32
121 %and8 = and i32 %and, %bf.cast7
122 %bf.lshr10 = lshr i8 %a.sroa.0.0.trunc, 3
123 %bf.clear11 = and i8 %bf.lshr10, 1
124 %bf.cast12 = zext i8 %bf.clear11 to i32
125 %and13 = and i32 %and8, %bf.cast12
126 %cmp = icmp eq i32 %and13, 0
127 %conv = zext i1 %cmp to i32