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 13 define i32 @main() #0 { 14 entry: 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 29 declare void @weakalias(...) #1 30 31 ; Cannot create an alias to available_externally 32 ; CHECK-DAG: declare void @analias 33 declare void @analias(...) #1 34 35 ; Aliases import the aliasee function 36 declare 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(...) 42 declare 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) 51 declare 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) 58 declare i32 @referencecommon(...) #1 59 60 ; CHECK-DAG: define available_externally void @setfuncptr() 61 declare void @setfuncptr(...) #1 62 63 ; CHECK-DAG: define available_externally void @callfuncptr() 64 declare 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(...) 74 declare void @weakfunc(...) #1 75 76
