5fe40050bd
Function::copyAttributesFrom will copy the personality function, prefix data and prolog data from the source function to the new function, and is invoked when the IRMover copies the function prototype. This puts a reference to a constant in the source module on a function in the dest module, which causes an error when deleting the source module after importing, since the personality function in the source module still has uses (this would presumably also be an issue for the prologue and prefix data). Remove the copies added to the dest copy when creating the new prototype, as they are mapped properly when/if we link the function body. llvm-svn: 257420
78 lines
3.1 KiB
LLVM
78 lines
3.1 KiB
LLVM
; Do setup work for all below tests: generate bitcode and combined index
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; RUN: llvm-as -function-summary %s -o %t.bc
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; RUN: llvm-as -function-summary %p/Inputs/funcimport.ll -o %t2.bc
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; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
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; Do the import now
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; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIMDEF
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; Test import with smaller instruction limit
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; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -import-instr-limit=5 -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIM5
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; INSTLIM5-NOT: @staticfunc.llvm.2
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define i32 @main() #0 {
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entry:
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call void (...) @weakalias()
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call void (...) @analias()
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call void (...) @linkoncealias()
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%call = call i32 (...) @referencestatics()
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%call1 = call i32 (...) @referenceglobals()
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%call2 = call i32 (...) @referencecommon()
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call void (...) @setfuncptr()
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call void (...) @callfuncptr()
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call void (...) @weakfunc()
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ret i32 0
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}
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; Won't import weak alias
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; CHECK-DAG: declare void @weakalias
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declare void @weakalias(...) #1
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; Cannot create an alias to available_externally
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; CHECK-DAG: declare void @analias
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declare void @analias(...) #1
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; Aliases import the aliasee function
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declare void @linkoncealias(...) #1
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; CHECK-DAG: define linkonce_odr void @linkoncefunc()
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; CHECK-DAG: @linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*
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; INSTLIMDEF-DAG: define available_externally i32 @referencestatics(i32 %i)
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; INSTLIM5-DAG: declare i32 @referencestatics(...)
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declare i32 @referencestatics(...) #1
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; The import of referencestatics will expose call to staticfunc that
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; should in turn be imported as a promoted/renamed and hidden function.
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; Ensure that the call is to the properly-renamed function.
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; INSTLIMDEF-DAG: %call = call i32 @staticfunc.llvm.2()
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; INSTLIMDEF-DAG: define available_externally hidden i32 @staticfunc.llvm.2()
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; CHECK-DAG: define available_externally i32 @referenceglobals(i32 %i)
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declare i32 @referenceglobals(...) #1
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; The import of referenceglobals will expose call to globalfunc1 that
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; should in turn be imported.
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; CHECK-DAG: define available_externally void @globalfunc1()
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; CHECK-DAG: define available_externally i32 @referencecommon(i32 %i)
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declare i32 @referencecommon(...) #1
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; CHECK-DAG: define available_externally void @setfuncptr()
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declare void @setfuncptr(...) #1
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; CHECK-DAG: define available_externally void @callfuncptr()
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declare void @callfuncptr(...) #1
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; Ensure that all uses of local variable @P which has used in setfuncptr
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; and callfuncptr are to the same promoted/renamed global.
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; CHECK-DAG: @P.llvm.2 = available_externally hidden global void ()* null
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; CHECK-DAG: %0 = load void ()*, void ()** @P.llvm.2,
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; CHECK-DAG: store void ()* @staticfunc2.llvm.2, void ()** @P.llvm.2,
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; Won't import weak func
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; CHECK-DAG: declare void @weakfunc(...)
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declare void @weakfunc(...) #1
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; INSTLIMDEF-DAG: define available_externally hidden void @funcwithpersonality.llvm.2() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; INSTLIM5-DAG: declare hidden void @funcwithpersonality.llvm.2()
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