1; Do setup work for all below tests: generate bitcode and combined index 2; RUN: llvm-as -function-summary %s -o %t.bc 3; RUN: llvm-as -function-summary %p/Inputs/funcimport.ll -o %t2.bc 4; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc 5 6; Do the import now 7; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIMDEF 8 9; Test import with smaller instruction limit 10; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -import-instr-limit=5 -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIM5 11; INSTLIM5-NOT: @staticfunc.llvm.2 12 13define i32 @main() #0 { 14entry: 15 call void (...) @weakalias() 16 call void (...) @analias() 17 call void (...) @linkoncealias() 18 %call = call i32 (...) @referencestatics() 19 %call1 = call i32 (...) @referenceglobals() 20 %call2 = call i32 (...) @referencecommon() 21 call void (...) @setfuncptr() 22 call void (...) @callfuncptr() 23 call void (...) @weakfunc() 24 ret i32 0 25} 26 27; Won't import weak alias 28; CHECK-DAG: declare void @weakalias 29declare void @weakalias(...) #1 30 31; Cannot create an alias to available_externally 32; CHECK-DAG: declare void @analias 33declare void @analias(...) #1 34 35; Aliases import the aliasee function 36declare void @linkoncealias(...) #1 37; CHECK-DAG: define linkonce_odr void @linkoncefunc() 38; CHECK-DAG: @linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)* 39 40; INSTLIMDEF-DAG: define available_externally i32 @referencestatics(i32 %i) 41; INSTLIM5-DAG: declare i32 @referencestatics(...) 42declare i32 @referencestatics(...) #1 43 44; The import of referencestatics will expose call to staticfunc that 45; should in turn be imported as a promoted/renamed and hidden function. 46; Ensure that the call is to the properly-renamed function. 47; INSTLIMDEF-DAG: %call = call i32 @staticfunc.llvm.2() 48; INSTLIMDEF-DAG: define available_externally hidden i32 @staticfunc.llvm.2() 49 50; CHECK-DAG: define available_externally i32 @referenceglobals(i32 %i) 51declare i32 @referenceglobals(...) #1 52 53; The import of referenceglobals will expose call to globalfunc1 that 54; should in turn be imported. 55; CHECK-DAG: define available_externally void @globalfunc1() 56 57; CHECK-DAG: define available_externally i32 @referencecommon(i32 %i) 58declare i32 @referencecommon(...) #1 59 60; CHECK-DAG: define available_externally void @setfuncptr() 61declare void @setfuncptr(...) #1 62 63; CHECK-DAG: define available_externally void @callfuncptr() 64declare void @callfuncptr(...) #1 65 66; Ensure that all uses of local variable @P which has used in setfuncptr 67; and callfuncptr are to the same promoted/renamed global. 68; CHECK-DAG: @P.llvm.2 = available_externally hidden global void ()* null 69; CHECK-DAG: %0 = load void ()*, void ()** @P.llvm.2, 70; CHECK-DAG: store void ()* @staticfunc2.llvm.2, void ()** @P.llvm.2, 71 72; Won't import weak func 73; CHECK-DAG: declare void @weakfunc(...) 74declare void @weakfunc(...) #1 75 76