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4fdb61f06e
Ensure WeakAny variables are imported as ExternalWeak declarations. To handle WeakAny more consistently and fix this issue: 1) Update helper doImportAsDefinition to properly flag WeakAny variables and aliases as not importing defintions. Update callers of doImportAsDefinition to remove now redundant checks for WeakAny aliases, or ignore aliases, as appropriate. 2) Add any !doImportAsDefinition GVs to DoNotLinkFromSource set during linking of the GV prototype, where we usually add GVs to the DoNotLinkFromSource set for other reasons. Remove now unnecessary adding of WeakAny aliases to DoNotLinkFromSource set from copyGlobalAliasProto. Remove now unnecessary guard against linking non-imported function bodies from ModuleLinker::run. llvm-svn: 252626
183 lines
7.4 KiB
LLVM
183 lines
7.4 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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; Ensure statics are promoted/renamed correctly from this file (all but
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; constant variable need promotion).
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; RUN: llvm-link %t.bc -functionindex=%t3.thinlto.bc -S | FileCheck %s --check-prefix=EXPORTSTATIC
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; EXPORTSTATIC: @staticvar.llvm.1 = hidden global
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; EXPORTSTATIC: @staticconstvar = internal unnamed_addr constant
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; EXPORTSTATIC: @P.llvm.1 = hidden global void ()* null
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; EXPORTSTATIC: define hidden i32 @staticfunc.llvm.1
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; EXPORTSTATIC: define hidden void @staticfunc2.llvm.1
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; Ensure that both weak alias to an imported function and strong alias to a
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; non-imported function are correctly turned into declarations.
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; Also ensures that alias to a linkonce function is turned into a declaration
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; and that the associated linkonce function is not in the output, as it is
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; lazily linked and never referenced/materialized.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB1
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; IMPORTGLOB1: define available_externally void @globalfunc1
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; IMPORTGLOB1: declare void @globalfunc2
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; IMPORTGLOB1: declare extern_weak void @weakalias
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; IMPORTGLOB1: declare void @analias
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; IMPORTGLOB1: declare void @linkoncealias
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; IMPORTGLOB1-NOT: @linkoncefunc
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; Ensure that weak alias to a non-imported function is correctly
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; turned into a declaration, but that strong alias to an imported function
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; is imported as alias.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB2
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; IMPORTGLOB2: @analias = alias void (...), bitcast (void ()* @globalfunc2
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; IMPORTGLOB2: declare void @globalfunc1
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; IMPORTGLOB2: define available_externally void @globalfunc2
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; IMPORTGLOB2: declare extern_weak void @weakalias
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; Ensure that strong alias imported in second pass of importing ends up
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; as an alias.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc1:%t.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB3
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; IMPORTGLOB3: @analias = alias void (...), bitcast (void ()* @globalfunc2
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; IMPORTGLOB3: define available_externally void @globalfunc1
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; IMPORTGLOB3: define available_externally void @globalfunc2
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; IMPORTGLOB3: declare extern_weak void @weakalias
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; Ensure that strong alias imported in first pass of importing ends up
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; as an alias, and that seeing the alias definition during a second inlining
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; pass is handled correctly.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc2:%t.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB4
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; IMPORTGLOB4: @analias = alias void (...), bitcast (void ()* @globalfunc2
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; IMPORTGLOB4: define available_externally void @globalfunc2
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; IMPORTGLOB4: define available_externally void @globalfunc1
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; IMPORTGLOB4: declare extern_weak void @weakalias
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; Ensure that imported static variable and function references are correctly
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; promoted and renamed (including static constant variable).
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=referencestatics:%t.bc -S | FileCheck %s --check-prefix=IMPORTSTATIC
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; IMPORTSTATIC: @staticvar.llvm.1 = available_externally hidden global
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; IMPORTSTATIC: @staticconstvar.llvm.1 = internal unnamed_addr constant
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; IMPORTSTATIC: define available_externally i32 @referencestatics
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; IMPORTSTATIC: %call = call i32 @staticfunc.llvm.1
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; IMPORTSTATIC: %0 = load i32, i32* @staticvar.llvm.1
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; IMPORTSTATIC: declare hidden i32 @staticfunc.llvm.1
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; Ensure that imported global (external) function and variable references
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; are handled correctly (including referenced variable imported as
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; available_externally definition)
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=referenceglobals:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOBALS
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; IMPORTGLOBALS: @globalvar = available_externally global
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; IMPORTGLOBALS: declare void @globalfunc1()
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; IMPORTGLOBALS: define available_externally i32 @referenceglobals
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; Ensure that common variable correctly imported as common defition.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=referencecommon:%t.bc -S | FileCheck %s --check-prefix=IMPORTCOMMON
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; IMPORTCOMMON: @commonvar = common global
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; IMPORTCOMMON: define available_externally i32 @referencecommon
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; Ensure that imported static function pointer correctly promoted and renamed.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=callfuncptr:%t.bc -S | FileCheck %s --check-prefix=IMPORTFUNCPTR
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; IMPORTFUNCPTR: @P.llvm.1 = available_externally hidden global void ()* null
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; IMPORTFUNCPTR: define available_externally void @callfuncptr
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; IMPORTFUNCPTR: %0 = load void ()*, void ()** @P.llvm.1
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; Ensure that imported weak function reference/definition handled properly.
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; Imported weak_any definition should be skipped with warning, and imported
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; reference should turned into an external_weak declaration.
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=callweakfunc:%t.bc -import=weakfunc:%t.bc -S 2>&1 | FileCheck %s --check-prefix=IMPORTWEAKFUNC
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; IMPORTWEAKFUNC: Ignoring import request for weak-any function weakfunc
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; IMPORTWEAKFUNC: @weakvar = extern_weak global i32, align 4
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; IMPORTWEAKFUNC: declare extern_weak void @weakfunc
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; IMPORTWEAKFUNC: define available_externally void @callweakfunc
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@globalvar = global i32 1, align 4
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@staticvar = internal global i32 1, align 4
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@staticconstvar = internal unnamed_addr constant [2 x i32] [i32 10, i32 20], align 4
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@commonvar = common global i32 0, align 4
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@P = internal global void ()* null, align 8
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@weakalias = weak alias void (...), bitcast (void ()* @globalfunc1 to void (...)*)
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@analias = alias void (...), bitcast (void ()* @globalfunc2 to void (...)*)
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@linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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define void @globalfunc1() #0 {
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entry:
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ret void
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}
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define void @globalfunc2() #0 {
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entry:
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ret void
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}
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define linkonce_odr void @linkoncefunc() #0 {
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entry:
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ret void
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}
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define i32 @referencestatics(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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%call = call i32 @staticfunc()
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%0 = load i32, i32* @staticvar, align 4
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%add = add nsw i32 %call, %0
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%1 = load i32, i32* %i.addr, align 4
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%idxprom = sext i32 %1 to i64
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%arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* @staticconstvar, i64 0, i64 %idxprom
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%2 = load i32, i32* %arrayidx, align 4
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%add1 = add nsw i32 %add, %2
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ret i32 %add1
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}
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define i32 @referenceglobals(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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call void @globalfunc1()
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%0 = load i32, i32* @globalvar, align 4
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ret i32 %0
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}
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define i32 @referencecommon(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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%0 = load i32, i32* @commonvar, align 4
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ret i32 %0
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}
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define void @setfuncptr() #0 {
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entry:
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store void ()* @staticfunc2, void ()** @P, align 8
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ret void
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}
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define void @callfuncptr() #0 {
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entry:
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%0 = load void ()*, void ()** @P, align 8
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call void %0()
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ret void
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}
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@weakvar = weak global i32 1, align 4
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define weak void @weakfunc() #0 {
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entry:
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ret void
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}
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define void @callweakfunc() #0 {
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entry:
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call void @weakfunc()
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ret void
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}
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define internal i32 @staticfunc() #0 {
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entry:
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ret i32 1
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}
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define internal void @staticfunc2() #0 {
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entry:
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ret void
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}
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