1; RUN: llc -verify-machineinstrs < %s -mtriple=x86_64-apple-darwin | FileCheck --check-prefix=CHECK-APPLE %s 2; RUN: llc -verify-machineinstrs -O0 < %s -mtriple=x86_64-apple-darwin | FileCheck --check-prefix=CHECK-O0 %s 3 4declare i8* @malloc(i64) 5declare void @free(i8*) 6%swift_error = type {i64, i8} 7 8; This tests the basic usage of a swifterror parameter. "foo" is the function 9; that takes a swifterror parameter and "caller" is the caller of "foo". 10define float @foo(%swift_error** swifterror %error_ptr_ref) { 11; CHECK-APPLE-LABEL: foo: 12; CHECK-APPLE: movl $16, %edi 13; CHECK-APPLE: malloc 14; CHECK-APPLE: movb $1, 8(%rax) 15; CHECK-APPLE: movq %rax, %r12 16 17; CHECK-O0-LABEL: foo: 18; CHECK-O0: movl $16 19; CHECK-O0: malloc 20; CHECK-O0: movb $1, 8(%rax) 21; CHECK-O0: movq %{{.*}}, %r12 22entry: 23 %call = call i8* @malloc(i64 16) 24 %call.0 = bitcast i8* %call to %swift_error* 25 store %swift_error* %call.0, %swift_error** %error_ptr_ref 26 %tmp = getelementptr inbounds i8, i8* %call, i64 8 27 store i8 1, i8* %tmp 28 ret float 1.0 29} 30 31; "caller" calls "foo" that takes a swifterror parameter. 32define float @caller(i8* %error_ref) { 33; CHECK-APPLE-LABEL: caller: 34; CHECK-APPLE: xorl %r12d, %r12d 35; CHECK-APPLE: callq {{.*}}foo 36; CHECK-APPLE: testq %r12, %r12 37; CHECK-APPLE: jne 38; Access part of the error object and save it to error_ref 39; CHECK-APPLE: movb 8(%r12) 40; CHECK-APPLE: movq %r12, %rdi 41; CHECK_APPLE: callq {{.*}}free 42 43; CHECK-O0-LABEL: caller: 44; CHECK-O0: xorl 45; CHECK-O0: movl %{{.*}}, %r12d 46; CHECK-O0: callq {{.*}}foo 47; CHECK-O0: jne 48entry: 49 %error_ptr_ref = alloca swifterror %swift_error* 50 store %swift_error* null, %swift_error** %error_ptr_ref 51 %call = call float @foo(%swift_error** swifterror %error_ptr_ref) 52 %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref 53 %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null 54 %tmp = bitcast %swift_error* %error_from_foo to i8* 55 br i1 %had_error_from_foo, label %handler, label %cont 56cont: 57 %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 58 %t = load i8, i8* %v1 59 store i8 %t, i8* %error_ref 60 br label %handler 61handler: 62 call void @free(i8* %tmp) 63 ret float 1.0 64} 65 66; "caller2" is the caller of "foo", it calls "foo" inside a loop. 67define float @caller2(i8* %error_ref) { 68; CHECK-APPLE-LABEL: caller2: 69; CHECK-APPLE: xorl %r12d, %r12d 70; CHECK-APPLE: callq {{.*}}foo 71; CHECK-APPLE: testq %r12, %r12 72; CHECK-APPLE: jne 73; CHECK-APPLE: ucomiss 74; CHECK-APPLE: jbe 75; Access part of the error object and save it to error_ref 76; CHECK-APPLE: movb 8(%r12) 77; CHECK-APPLE: movq %r12, %rdi 78; CHECK_APPLE: callq {{.*}}free 79 80; CHECK-O0-LABEL: caller2: 81; CHECK-O0: xorl 82; CHECK-O0: movl %{{.*}}, %r12d 83; CHECK-O0: callq {{.*}}foo 84; CHECK-O0: movq %r12, [[ID:%[a-z]+]] 85; CHECK-O0: cmpq $0, [[ID]] 86; CHECK-O0: jne 87entry: 88 %error_ptr_ref = alloca swifterror %swift_error* 89 br label %bb_loop 90bb_loop: 91 store %swift_error* null, %swift_error** %error_ptr_ref 92 %call = call float @foo(%swift_error** swifterror %error_ptr_ref) 93 %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref 94 %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null 95 %tmp = bitcast %swift_error* %error_from_foo to i8* 96 br i1 %had_error_from_foo, label %handler, label %cont 97cont: 98 %cmp = fcmp ogt float %call, 1.000000e+00 99 br i1 %cmp, label %bb_end, label %bb_loop 100bb_end: 101 %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 102 %t = load i8, i8* %v1 103 store i8 %t, i8* %error_ref 104 br label %handler 105handler: 106 call void @free(i8* %tmp) 107 ret float 1.0 108} 109 110; "foo_if" is a function that takes a swifterror parameter, it sets swifterror 111; under a certain condition. 112define float @foo_if(%swift_error** swifterror %error_ptr_ref, i32 %cc) { 113; CHECK-APPLE-LABEL: foo_if: 114; CHECK-APPLE: testl %edi, %edi 115; CHECK-APPLE: je 116; CHECK-APPLE: movl $16, %edi 117; CHECK-APPLE: malloc 118; CHECK-APPLE: movb $1, 8(%rax) 119; CHECK-APPLE: movq %rax, %r12 120; CHECK-APPLE-NOT: %r12 121; CHECK-APPLE: ret 122 123; CHECK-O0-LABEL: foo_if: 124; CHECK-O0: cmpl $0 125; spill to stack 126; CHECK-O0: movq %r12, {{.*}}(%rsp) 127; CHECK-O0: je 128; CHECK-O0: movl $16, 129; CHECK-O0: malloc 130; CHECK-O0: movq %rax, [[ID:%[a-z]+]] 131; CHECK-O0-DAG: movb $1, 8(%rax) 132; CHECK-O0-DAG: movq [[ID]], %r12 133; CHECK-O0: ret 134; reload from stack 135; CHECK-O0: movq {{.*}}(%rsp), %r12 136; CHECK-O0: ret 137entry: 138 %cond = icmp ne i32 %cc, 0 139 br i1 %cond, label %gen_error, label %normal 140 141gen_error: 142 %call = call i8* @malloc(i64 16) 143 %call.0 = bitcast i8* %call to %swift_error* 144 store %swift_error* %call.0, %swift_error** %error_ptr_ref 145 %tmp = getelementptr inbounds i8, i8* %call, i64 8 146 store i8 1, i8* %tmp 147 ret float 1.0 148 149normal: 150 ret float 0.0 151} 152 153; "foo_loop" is a function that takes a swifterror parameter, it sets swifterror 154; under a certain condition inside a loop. 155define float @foo_loop(%swift_error** swifterror %error_ptr_ref, i32 %cc, float %cc2) { 156; CHECK-APPLE-LABEL: foo_loop: 157; CHECK-APPLE: movq %r12, %rax 158; CHECK-APPLE: testl 159; CHECK-APPLE: je 160; CHECK-APPLE: movl $16, %edi 161; CHECK-APPLE: malloc 162; CHECK-APPLE: movb $1, 8(%rax) 163; CHECK-APPLE: ucomiss 164; CHECK-APPLE: jbe 165; CHECK-APPLE: movq %rax, %r12 166; CHECK-APPLE: ret 167 168; CHECK-O0-LABEL: foo_loop: 169; spill to stack 170; CHECK-O0: movq %r12, {{.*}}(%rsp) 171; CHECK-O0: cmpl $0 172; CHECK-O0: je 173; CHECK-O0: movl $16, 174; CHECK-O0: malloc 175; CHECK-O0: movq %rax, [[ID:%[a-z]+]] 176; CHECK-O0: movb $1, 8([[ID]]) 177; CHECK-O0: jbe 178; reload from stack 179; CHECK-O0: movq {{.*}}(%rsp), %r12 180; CHECK-O0: ret 181entry: 182 br label %bb_loop 183 184bb_loop: 185 %cond = icmp ne i32 %cc, 0 186 br i1 %cond, label %gen_error, label %bb_cont 187 188gen_error: 189 %call = call i8* @malloc(i64 16) 190 %call.0 = bitcast i8* %call to %swift_error* 191 store %swift_error* %call.0, %swift_error** %error_ptr_ref 192 %tmp = getelementptr inbounds i8, i8* %call, i64 8 193 store i8 1, i8* %tmp 194 br label %bb_cont 195 196bb_cont: 197 %cmp = fcmp ogt float %cc2, 1.000000e+00 198 br i1 %cmp, label %bb_end, label %bb_loop 199bb_end: 200 ret float 0.0 201} 202 203%struct.S = type { i32, i32, i32, i32, i32, i32 } 204 205; "foo_sret" is a function that takes a swifterror parameter, it also has a sret 206; parameter. 207define void @foo_sret(%struct.S* sret %agg.result, i32 %val1, %swift_error** swifterror %error_ptr_ref) { 208; CHECK-APPLE-LABEL: foo_sret: 209; CHECK-APPLE: movq %rdi, %{{.*}} 210; CHECK-APPLE: movl $16, %edi 211; CHECK-APPLE: malloc 212; CHECK-APPLE: movb $1, 8(%rax) 213; CHECK-APPLE: movl %{{.*}}, 4(%{{.*}}) 214; CHECK-APPLE: movq %rax, %r12 215; CHECK-APPLE: movq %{{.*}}, %rax 216; CHECK-APPLE-NOT: x19 217 218; CHECK-O0-LABEL: foo_sret: 219; CHECK-O0: movl $16, 220; spill sret to stack 221; CHECK-O0: movq %rdi, 222; CHECK-O0: movq {{.*}}, %rdi 223; CHECK-O0: malloc 224; CHECK-O0: movb $1, 8(%rax) 225; CHECK-O0: movl %{{.*}}, 4(%{{.*}}) 226; CHECK-O0: movq %{{.*}}, %r12 227; reload sret from stack 228; CHECK-O0: movq {{.*}}(%rsp), %rax 229; CHECK-O0: ret 230entry: 231 %call = call i8* @malloc(i64 16) 232 %call.0 = bitcast i8* %call to %swift_error* 233 store %swift_error* %call.0, %swift_error** %error_ptr_ref 234 %tmp = getelementptr inbounds i8, i8* %call, i64 8 235 store i8 1, i8* %tmp 236 %v2 = getelementptr inbounds %struct.S, %struct.S* %agg.result, i32 0, i32 1 237 store i32 %val1, i32* %v2 238 ret void 239} 240 241; "caller3" calls "foo_sret" that takes a swifterror parameter. 242define float @caller3(i8* %error_ref) { 243; CHECK-APPLE-LABEL: caller3: 244; CHECK-APPLE: movl $1, %esi 245; CHECK-APPLE: xorl %r12d, %r12d 246; CHECK-APPLE: callq {{.*}}foo_sret 247; CHECK-APPLE: testq %r12, %r12 248; CHECK-APPLE: jne 249; Access part of the error object and save it to error_ref 250; CHECK-APPLE: movb 8(%r12), 251; CHECK-APPLE: movb %{{.*}}, 252; CHECK-APPLE: movq %r12, %rdi 253; CHECK_APPLE: callq {{.*}}free 254 255; CHECK-O0-LABEL: caller3: 256; CHECK-O0: xorl 257; CHECK-O0: movl {{.*}}, %r12d 258; CHECK-O0: movl $1, %esi 259; CHECK-O0: movq {{.*}}, %rdi 260; CHECK-O0: callq {{.*}}foo_sret 261; CHECK-O0: movq %r12, 262; CHECK-O0: cmpq $0 263; CHECK-O0: jne 264; Access part of the error object and save it to error_ref 265; CHECK-O0: movb 8(%{{.*}}), 266; CHECK-O0: movb %{{.*}}, 267; reload from stack 268; CHECK-O0: movq {{.*}}(%rsp), %rdi 269; CHECK-O0: callq {{.*}}free 270entry: 271 %s = alloca %struct.S, align 8 272 %error_ptr_ref = alloca swifterror %swift_error* 273 store %swift_error* null, %swift_error** %error_ptr_ref 274 call void @foo_sret(%struct.S* sret %s, i32 1, %swift_error** swifterror %error_ptr_ref) 275 %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref 276 %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null 277 %tmp = bitcast %swift_error* %error_from_foo to i8* 278 br i1 %had_error_from_foo, label %handler, label %cont 279cont: 280 %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 281 %t = load i8, i8* %v1 282 store i8 %t, i8* %error_ref 283 br label %handler 284handler: 285 call void @free(i8* %tmp) 286 ret float 1.0 287} 288 289; This is a caller with multiple swifterror values, it calls "foo" twice, each 290; time with a different swifterror value, from "alloca swifterror". 291define float @caller_with_multiple_swifterror_values(i8* %error_ref, i8* %error_ref2) { 292; CHECK-APPLE-LABEL: caller_with_multiple_swifterror_values: 293 294; The first swifterror value: 295; CHECK-APPLE: xorl %r12d, %r12d 296; CHECK-APPLE: callq {{.*}}foo 297; CHECK-APPLE: testq %r12, %r12 298; CHECK-APPLE: jne 299; Access part of the error object and save it to error_ref 300; CHECK-APPLE: movb 8(%r12) 301; CHECK-APPLE: movq %r12, %rdi 302; CHECK_APPLE: callq {{.*}}free 303 304; The second swifterror value: 305; CHECK-APPLE: xorl %r12d, %r12d 306; CHECK-APPLE: callq {{.*}}foo 307; CHECK-APPLE: testq %r12, %r12 308; CHECK-APPLE: jne 309; Access part of the error object and save it to error_ref 310; CHECK-APPLE: movb 8(%r12) 311; CHECK-APPLE: movq %r12, %rdi 312; CHECK_APPLE: callq {{.*}}free 313 314; CHECK-O0-LABEL: caller_with_multiple_swifterror_values: 315 316; The first swifterror value: 317; CHECK-O0: xorl 318; CHECK-O0: movl %{{.*}}, %r12d 319; CHECK-O0: callq {{.*}}foo 320; CHECK-O0: jne 321 322; The second swifterror value: 323; CHECK-O0: xorl 324; CHECK-O0: movl %{{.*}}, %r12d 325; CHECK-O0: callq {{.*}}foo 326; CHECK-O0: jne 327entry: 328 %error_ptr_ref = alloca swifterror %swift_error* 329 store %swift_error* null, %swift_error** %error_ptr_ref 330 %call = call float @foo(%swift_error** swifterror %error_ptr_ref) 331 %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref 332 %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null 333 %tmp = bitcast %swift_error* %error_from_foo to i8* 334 br i1 %had_error_from_foo, label %handler, label %cont 335cont: 336 %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 337 %t = load i8, i8* %v1 338 store i8 %t, i8* %error_ref 339 br label %handler 340handler: 341 call void @free(i8* %tmp) 342 343 %error_ptr_ref2 = alloca swifterror %swift_error* 344 store %swift_error* null, %swift_error** %error_ptr_ref2 345 %call2 = call float @foo(%swift_error** swifterror %error_ptr_ref2) 346 %error_from_foo2 = load %swift_error*, %swift_error** %error_ptr_ref2 347 %had_error_from_foo2 = icmp ne %swift_error* %error_from_foo2, null 348 %bitcast2 = bitcast %swift_error* %error_from_foo2 to i8* 349 br i1 %had_error_from_foo2, label %handler2, label %cont2 350cont2: 351 %v2 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo2, i64 0, i32 1 352 %t2 = load i8, i8* %v2 353 store i8 %t2, i8* %error_ref2 354 br label %handler2 355handler2: 356 call void @free(i8* %bitcast2) 357 358 ret float 1.0 359} 360