1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -inline-threshold=0 -passes=always-inline -S | FileCheck %s 3; RUN: opt < %s -passes=always-inline -S | FileCheck %s 4 5declare ptr @foo(ptr) nounwind willreturn 6 7define ptr @callee(ptr %p) alwaysinline { 8; CHECK-LABEL: @callee( 9; CHECK-NEXT: [[R:%.*]] = call ptr @foo(ptr noalias [[P:%.*]]) 10; CHECK-NEXT: ret ptr [[R]] 11; 12 %r = call ptr @foo(ptr noalias %p) 13 ret ptr %r 14} 15 16define ptr @caller(ptr %ptr, i64 %x) { 17; CHECK-LABEL: @caller( 18; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 19; CHECK-NEXT: [[R_I:%.*]] = call nonnull ptr @foo(ptr noalias [[GEP]]) 20; CHECK-NEXT: ret ptr [[R_I]] 21; 22 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 23 %p = call nonnull ptr @callee(ptr %gep) 24 ret ptr %p 25} 26 27declare void @llvm.experimental.guard(i1,...) 28; Cannot add nonnull attribute to foo 29; because the guard is a throwing call 30define internal ptr @callee_with_throwable(ptr %p) alwaysinline { 31 %r = call ptr @foo(ptr %p) 32 %cond = icmp ne ptr %r, null 33 call void (i1, ...) @llvm.experimental.guard(i1 %cond) [ "deopt"() ] 34 ret ptr %r 35} 36 37declare ptr @bar(ptr) readonly nounwind 38; Here also we cannot add nonnull attribute to the call bar. 39define internal ptr @callee_with_explicit_control_flow(ptr %p) alwaysinline { 40 %r = call ptr @bar(ptr %p) 41 %cond = icmp ne ptr %r, null 42 br i1 %cond, label %ret, label %orig 43 44ret: 45 ret ptr %r 46 47orig: 48 ret ptr %p 49} 50 51define ptr @caller2(ptr %ptr, i64 %x, i1 %cond) { 52; CHECK-LABEL: @caller2( 53; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 54; CHECK-NEXT: [[R_I:%.*]] = call ptr @foo(ptr [[GEP]]) 55; CHECK-NEXT: [[COND_I:%.*]] = icmp ne ptr [[R_I]], null 56; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[COND_I]]) [ "deopt"() ] 57; CHECK-NEXT: [[R_I1:%.*]] = call ptr @bar(ptr [[GEP]]) 58; CHECK-NEXT: [[COND_I2:%.*]] = icmp ne ptr [[R_I1]], null 59; CHECK-NEXT: br i1 [[COND_I2]], label [[RET_I:%.*]], label [[ORIG_I:%.*]] 60; CHECK: ret.i: 61; CHECK-NEXT: br label [[CALLEE_WITH_EXPLICIT_CONTROL_FLOW_EXIT:%.*]] 62; CHECK: orig.i: 63; CHECK-NEXT: br label [[CALLEE_WITH_EXPLICIT_CONTROL_FLOW_EXIT]] 64; CHECK: callee_with_explicit_control_flow.exit: 65; CHECK-NEXT: [[Q3:%.*]] = phi ptr [ [[R_I1]], [[RET_I]] ], [ [[GEP]], [[ORIG_I]] ] 66; CHECK-NEXT: br i1 [[COND:%.*]], label [[PRET:%.*]], label [[QRET:%.*]] 67; CHECK: pret: 68; CHECK-NEXT: ret ptr [[R_I]] 69; CHECK: qret: 70; CHECK-NEXT: ret ptr [[Q3]] 71; 72 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 73 %p = call nonnull ptr @callee_with_throwable(ptr %gep) 74 %q = call nonnull ptr @callee_with_explicit_control_flow(ptr %gep) 75 br i1 %cond, label %pret, label %qret 76 77pret: 78 ret ptr %p 79 80qret: 81 ret ptr %q 82} 83 84define internal ptr @callee3(ptr %p) alwaysinline { 85 %r = call noalias ptr @foo(ptr %p) 86 ret ptr %r 87} 88 89; add the deref attribute to the existing attributes on foo. 90define ptr @caller3(ptr %ptr, i64 %x) { 91; CHECK-LABEL: @caller3( 92; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 93; CHECK-NEXT: [[R_I:%.*]] = call noalias dereferenceable_or_null(12) ptr @foo(ptr [[GEP]]) 94; CHECK-NEXT: ret ptr [[R_I]] 95; 96 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 97 %p = call dereferenceable_or_null(12) ptr @callee3(ptr %gep) 98 ret ptr %p 99} 100 101declare ptr @inf_loop_call(ptr) nounwind 102; We cannot propagate attributes to foo because we do not know whether inf_loop_call 103; will return execution. 104define internal ptr @callee_with_sideeffect_callsite(ptr %p) alwaysinline { 105 %r = call ptr @foo(ptr %p) 106 %v = call ptr @inf_loop_call(ptr %p) 107 ret ptr %r 108} 109 110; do not add deref attribute to foo 111define ptr @test4(ptr %ptr, i64 %x) { 112; CHECK-LABEL: @test4( 113; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 114; CHECK-NEXT: [[R_I:%.*]] = call ptr @foo(ptr [[GEP]]) 115; CHECK-NEXT: [[V_I:%.*]] = call ptr @inf_loop_call(ptr [[GEP]]) 116; CHECK-NEXT: ret ptr [[R_I]] 117; 118 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 119 %p = call dereferenceable_or_null(12) ptr @callee_with_sideeffect_callsite(ptr %gep) 120 ret ptr %p 121} 122 123declare ptr @baz(ptr) nounwind willreturn 124define internal ptr @callee5(ptr %p) alwaysinline { 125 %r = call ptr @foo(ptr %p) 126 %v = call ptr @baz(ptr %p) 127 ret ptr %r 128} 129 130; add the deref attribute to foo. 131define ptr @test5(ptr %ptr, i64 %x) { 132; CHECK-LABEL: @test5( 133; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 134; CHECK-NEXT: [[R_I:%.*]] = call dereferenceable_or_null(12) ptr @foo(ptr [[GEP]]) 135; CHECK-NEXT: [[V_I:%.*]] = call ptr @baz(ptr [[GEP]]) 136; CHECK-NEXT: ret ptr [[R_I]] 137; 138 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 139 %s = call dereferenceable_or_null(12) ptr @callee5(ptr %gep) 140 ret ptr %s 141} 142 143; deref attributes have different values on the callee and the call feeding into 144; the return. 145; AttrBuilder overwrites the existing value. 146define internal ptr @callee6(ptr %p) alwaysinline { 147 %r = call dereferenceable_or_null(16) ptr @foo(ptr %p) 148 %v = call ptr @baz(ptr %p) 149 ret ptr %r 150} 151 152 153define ptr @test6(ptr %ptr, i64 %x) { 154; CHECK-LABEL: @test6( 155; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 156; CHECK-NEXT: [[R_I:%.*]] = call dereferenceable_or_null(16) ptr @foo(ptr [[GEP]]) 157; CHECK-NEXT: [[V_I:%.*]] = call ptr @baz(ptr [[GEP]]) 158; CHECK-NEXT: ret ptr [[R_I]] 159; 160 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 161 %s = call dereferenceable_or_null(12) ptr @callee6(ptr %gep) 162 ret ptr %s 163} 164 165; We add the attributes from the callee to both the calls below. 166define internal ptr @callee7(ptr %ptr, i1 %cond) alwaysinline { 167 br i1 %cond, label %pass, label %fail 168 169pass: 170 %r = call ptr @foo(ptr noalias %ptr) 171 ret ptr %r 172 173fail: 174 %s = call ptr @baz(ptr %ptr) 175 ret ptr %s 176} 177 178define void @test7(ptr %ptr, i64 %x, i1 %cond) { 179; CHECK-LABEL: @test7( 180; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 181; CHECK-NEXT: br i1 [[COND:%.*]], label [[PASS_I:%.*]], label [[FAIL_I:%.*]] 182; CHECK: pass.i: 183; CHECK-NEXT: [[R_I:%.*]] = call nonnull ptr @foo(ptr noalias [[GEP]]) 184; CHECK-NEXT: br label [[CALLEE7_EXIT:%.*]] 185; CHECK: fail.i: 186; CHECK-NEXT: [[S_I:%.*]] = call nonnull ptr @baz(ptr [[GEP]]) 187; CHECK-NEXT: br label [[CALLEE7_EXIT]] 188; CHECK: callee7.exit: 189; CHECK-NEXT: [[T1:%.*]] = phi ptr [ [[R_I]], [[PASS_I]] ], [ [[S_I]], [[FAIL_I]] ] 190; CHECK-NEXT: call void @snort(ptr [[T1]]) 191; CHECK-NEXT: ret void 192; 193 194 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 195 %t = call nonnull ptr @callee7(ptr %gep, i1 %cond) 196 call void @snort(ptr %t) 197 ret void 198} 199declare void @snort(ptr) 200 201declare i32 @intrinsic(ptr) nounwind argmemonly 202 203define internal i32 @callee8(ptr %ptr) alwaysinline { 204 %r = call i32 @intrinsic(ptr noalias %ptr) 205 ret i32 %r 206} 207 208 209; signext is an attribute specific to the target ABI and not the 210; callee/callsite. 211; We cannot propagate that attribute to another call since it can be invalid at 212; that call. 213define i32 @test8(ptr %ptr, i64 %x) { 214; CHECK-LABEL: @test8( 215; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]] 216; CHECK-NEXT: [[R_I:%.*]] = call i32 @intrinsic(ptr noalias [[GEP]]) 217; CHECK-NEXT: ret i32 [[R_I]] 218; 219 220 %gep = getelementptr inbounds i8, ptr %ptr, i64 %x 221 %t = call signext i32 @callee8(ptr %gep) 222 ret i32 %t 223} 224