| Jakub Staszak | 9da9934 | 2011-07-06 18:22:43 +0000 | [diff] [blame] | 1 | ; RUN: opt -lower-expect -strip-dead-prototypes -S -o - < %s | FileCheck %s |
| 2 | |
| 3 | ; CHECK: @test1 |
| 4 | define i32 @test1(i32 %x) nounwind uwtable ssp { |
| 5 | entry: |
| 6 | %retval = alloca i32, align 4 |
| 7 | %x.addr = alloca i32, align 4 |
| 8 | store i32 %x, i32* %x.addr, align 4 |
| 9 | %tmp = load i32* %x.addr, align 4 |
| 10 | %cmp = icmp sgt i32 %tmp, 1 |
| 11 | %conv = zext i1 %cmp to i32 |
| 12 | %conv1 = sext i32 %conv to i64 |
| 13 | %expval = call i64 @llvm.expect.i64(i64 %conv1, i64 1) |
| 14 | %tobool = icmp ne i64 %expval, 0 |
| 15 | ; CHECK: !prof !0 |
| 16 | ; CHECK-NOT: @llvm.expect |
| 17 | br i1 %tobool, label %if.then, label %if.end |
| 18 | |
| 19 | if.then: ; preds = %entry |
| 20 | %call = call i32 (...)* @f() |
| 21 | store i32 %call, i32* %retval |
| 22 | br label %return |
| 23 | |
| 24 | if.end: ; preds = %entry |
| 25 | store i32 1, i32* %retval |
| 26 | br label %return |
| 27 | |
| 28 | return: ; preds = %if.end, %if.then |
| 29 | %0 = load i32* %retval |
| 30 | ret i32 %0 |
| 31 | } |
| 32 | |
| 33 | declare i64 @llvm.expect.i64(i64, i64) nounwind readnone |
| 34 | |
| 35 | declare i32 @f(...) |
| 36 | |
| 37 | ; CHECK: @test2 |
| 38 | define i32 @test2(i32 %x) nounwind uwtable ssp { |
| 39 | entry: |
| 40 | %retval = alloca i32, align 4 |
| 41 | %x.addr = alloca i32, align 4 |
| 42 | store i32 %x, i32* %x.addr, align 4 |
| 43 | %tmp = load i32* %x.addr, align 4 |
| 44 | %conv = sext i32 %tmp to i64 |
| 45 | %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1) |
| 46 | %tobool = icmp ne i64 %expval, 0 |
| 47 | ; CHECK: !prof !0 |
| 48 | ; CHECK-NOT: @llvm.expect |
| 49 | br i1 %tobool, label %if.then, label %if.end |
| 50 | |
| 51 | if.then: ; preds = %entry |
| 52 | %call = call i32 (...)* @f() |
| 53 | store i32 %call, i32* %retval |
| 54 | br label %return |
| 55 | |
| 56 | if.end: ; preds = %entry |
| 57 | store i32 1, i32* %retval |
| 58 | br label %return |
| 59 | |
| 60 | return: ; preds = %if.end, %if.then |
| 61 | %0 = load i32* %retval |
| 62 | ret i32 %0 |
| 63 | } |
| 64 | |
| 65 | ; CHECK: @test3 |
| 66 | define i32 @test3(i32 %x) nounwind uwtable ssp { |
| 67 | entry: |
| 68 | %retval = alloca i32, align 4 |
| 69 | %x.addr = alloca i32, align 4 |
| 70 | store i32 %x, i32* %x.addr, align 4 |
| 71 | %tmp = load i32* %x.addr, align 4 |
| 72 | %tobool = icmp ne i32 %tmp, 0 |
| 73 | %lnot = xor i1 %tobool, true |
| 74 | %lnot.ext = zext i1 %lnot to i32 |
| 75 | %conv = sext i32 %lnot.ext to i64 |
| 76 | %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1) |
| 77 | %tobool1 = icmp ne i64 %expval, 0 |
| 78 | ; CHECK: !prof !0 |
| 79 | ; CHECK-NOT: @llvm.expect |
| 80 | br i1 %tobool1, label %if.then, label %if.end |
| 81 | |
| 82 | if.then: ; preds = %entry |
| 83 | %call = call i32 (...)* @f() |
| 84 | store i32 %call, i32* %retval |
| 85 | br label %return |
| 86 | |
| 87 | if.end: ; preds = %entry |
| 88 | store i32 1, i32* %retval |
| 89 | br label %return |
| 90 | |
| 91 | return: ; preds = %if.end, %if.then |
| 92 | %0 = load i32* %retval |
| 93 | ret i32 %0 |
| 94 | } |
| 95 | |
| 96 | ; CHECK: @test4 |
| 97 | define i32 @test4(i32 %x) nounwind uwtable ssp { |
| 98 | entry: |
| 99 | %retval = alloca i32, align 4 |
| 100 | %x.addr = alloca i32, align 4 |
| 101 | store i32 %x, i32* %x.addr, align 4 |
| 102 | %tmp = load i32* %x.addr, align 4 |
| 103 | %tobool = icmp ne i32 %tmp, 0 |
| 104 | %lnot = xor i1 %tobool, true |
| 105 | %lnot1 = xor i1 %lnot, true |
| 106 | %lnot.ext = zext i1 %lnot1 to i32 |
| 107 | %conv = sext i32 %lnot.ext to i64 |
| 108 | %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1) |
| 109 | %tobool2 = icmp ne i64 %expval, 0 |
| 110 | ; CHECK: !prof !0 |
| 111 | ; CHECK-NOT: @llvm.expect |
| 112 | br i1 %tobool2, label %if.then, label %if.end |
| 113 | |
| 114 | if.then: ; preds = %entry |
| 115 | %call = call i32 (...)* @f() |
| 116 | store i32 %call, i32* %retval |
| 117 | br label %return |
| 118 | |
| 119 | if.end: ; preds = %entry |
| 120 | store i32 1, i32* %retval |
| 121 | br label %return |
| 122 | |
| 123 | return: ; preds = %if.end, %if.then |
| 124 | %0 = load i32* %retval |
| 125 | ret i32 %0 |
| 126 | } |
| 127 | |
| 128 | ; CHECK: @test5 |
| 129 | define i32 @test5(i32 %x) nounwind uwtable ssp { |
| 130 | entry: |
| 131 | %retval = alloca i32, align 4 |
| 132 | %x.addr = alloca i32, align 4 |
| 133 | store i32 %x, i32* %x.addr, align 4 |
| 134 | %tmp = load i32* %x.addr, align 4 |
| 135 | %cmp = icmp slt i32 %tmp, 0 |
| 136 | %conv = zext i1 %cmp to i32 |
| 137 | %conv1 = sext i32 %conv to i64 |
| 138 | %expval = call i64 @llvm.expect.i64(i64 %conv1, i64 0) |
| 139 | %tobool = icmp ne i64 %expval, 0 |
| 140 | ; CHECK: !prof !1 |
| 141 | ; CHECK-NOT: @llvm.expect |
| 142 | br i1 %tobool, label %if.then, label %if.end |
| 143 | |
| 144 | if.then: ; preds = %entry |
| 145 | %call = call i32 (...)* @f() |
| 146 | store i32 %call, i32* %retval |
| 147 | br label %return |
| 148 | |
| 149 | if.end: ; preds = %entry |
| 150 | store i32 1, i32* %retval |
| 151 | br label %return |
| 152 | |
| 153 | return: ; preds = %if.end, %if.then |
| 154 | %0 = load i32* %retval |
| 155 | ret i32 %0 |
| 156 | } |
| 157 | |
| 158 | ; CHECK: @test6 |
| 159 | define i32 @test6(i32 %x) nounwind uwtable ssp { |
| 160 | entry: |
| 161 | %retval = alloca i32, align 4 |
| 162 | %x.addr = alloca i32, align 4 |
| 163 | store i32 %x, i32* %x.addr, align 4 |
| 164 | %tmp = load i32* %x.addr, align 4 |
| 165 | %conv = sext i32 %tmp to i64 |
| 166 | %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1) |
| 167 | ; CHECK: !prof !2 |
| 168 | ; CHECK-NOT: @llvm.expect |
| 169 | switch i64 %expval, label %sw.epilog [ |
| 170 | i64 1, label %sw.bb |
| 171 | i64 2, label %sw.bb |
| 172 | ] |
| 173 | |
| 174 | sw.bb: ; preds = %entry, %entry |
| 175 | store i32 0, i32* %retval |
| 176 | br label %return |
| 177 | |
| 178 | sw.epilog: ; preds = %entry |
| 179 | store i32 1, i32* %retval |
| 180 | br label %return |
| 181 | |
| 182 | return: ; preds = %sw.epilog, %sw.bb |
| 183 | %0 = load i32* %retval |
| 184 | ret i32 %0 |
| 185 | } |
| 186 | |
| 187 | ; CHECK: @test7 |
| 188 | define i32 @test7(i32 %x) nounwind uwtable ssp { |
| 189 | entry: |
| 190 | %retval = alloca i32, align 4 |
| 191 | %x.addr = alloca i32, align 4 |
| 192 | store i32 %x, i32* %x.addr, align 4 |
| 193 | %tmp = load i32* %x.addr, align 4 |
| 194 | %conv = sext i32 %tmp to i64 |
| 195 | %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1) |
| 196 | ; CHECK: !prof !3 |
| 197 | ; CHECK-NOT: @llvm.expect |
| 198 | switch i64 %expval, label %sw.epilog [ |
| 199 | i64 2, label %sw.bb |
| 200 | i64 3, label %sw.bb |
| 201 | ] |
| 202 | |
| 203 | sw.bb: ; preds = %entry, %entry |
| 204 | %tmp1 = load i32* %x.addr, align 4 |
| 205 | store i32 %tmp1, i32* %retval |
| 206 | br label %return |
| 207 | |
| 208 | sw.epilog: ; preds = %entry |
| 209 | store i32 0, i32* %retval |
| 210 | br label %return |
| 211 | |
| 212 | return: ; preds = %sw.epilog, %sw.bb |
| 213 | %0 = load i32* %retval |
| 214 | ret i32 %0 |
| 215 | } |
| 216 | |
| 217 | ; CHECK: @test8 |
| 218 | define i32 @test8(i32 %x) nounwind uwtable ssp { |
| 219 | entry: |
| 220 | %retval = alloca i32, align 4 |
| 221 | %x.addr = alloca i32, align 4 |
| 222 | store i32 %x, i32* %x.addr, align 4 |
| 223 | %tmp = load i32* %x.addr, align 4 |
| 224 | %cmp = icmp sgt i32 %tmp, 1 |
| 225 | %conv = zext i1 %cmp to i32 |
| 226 | %expval = call i32 @llvm.expect.i32(i32 %conv, i32 1) |
| 227 | %tobool = icmp ne i32 %expval, 0 |
| 228 | ; CHECK: !prof !0 |
| 229 | ; CHECK-NOT: @llvm.expect |
| 230 | br i1 %tobool, label %if.then, label %if.end |
| 231 | |
| 232 | if.then: ; preds = %entry |
| 233 | %call = call i32 (...)* @f() |
| 234 | store i32 %call, i32* %retval |
| 235 | br label %return |
| 236 | |
| 237 | if.end: ; preds = %entry |
| 238 | store i32 1, i32* %retval |
| 239 | br label %return |
| 240 | |
| 241 | return: ; preds = %if.end, %if.then |
| 242 | %0 = load i32* %retval |
| 243 | ret i32 %0 |
| 244 | } |
| 245 | |
| 246 | declare i32 @llvm.expect.i32(i32, i32) nounwind readnone |
| 247 | |
| 248 | ; CHECK: !0 = metadata !{metadata !"branch_weights", i32 64, i32 4} |
| 249 | ; CHECK: !1 = metadata !{metadata !"branch_weights", i32 4, i32 64} |
| 250 | ; CHECK: !2 = metadata !{metadata !"branch_weights", i32 4, i32 64, i32 4} |
| 251 | ; CHECK: !3 = metadata !{metadata !"branch_weights", i32 64, i32 4, i32 4} |