5b22bcc2b7
For a MC_GlobalAddress reference to a dso_local external GlobalValue with a definition, emit .Lfoo$local to avoid a relocation. -fno-pic and -fpie can infer dso_local but -fpic cannot. In the future, we can explore the possibility of inferring dso_local with -fpic. As the description of D73228 says, LLVM's existing IPO optimization behaviors (like -fno-semantic-interposition) and a previous assembly behavior give us enough license to be aggressive here. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D73230
231 lines
7.8 KiB
LLVM
231 lines
7.8 KiB
LLVM
; RUN: llc -mtriple x86_64-pc-linux -relocation-model=static < %s | \
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; RUN: FileCheck --check-prefixes=COMMON,STATIC %s
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; RUN: llc -mtriple x86_64-pc-linux -relocation-model=pic < %s | \
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; RUN: FileCheck --check-prefixes=COMMON,CHECK %s
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; RUN: llc -mtriple x86_64-pc-linux -relocation-model=dynamic-no-pic < %s | \
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; RUN: FileCheck --check-prefixes=COMMON,CHECK %s
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; 32 bits
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; RUN: llc -mtriple i386-pc-linux \
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; RUN: -relocation-model=pic < %s | FileCheck --check-prefix=CHECK32 %s
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; globals
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@strong_default_global = global i32 42
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define i32* @get_strong_default_global() {
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ret i32* @strong_default_global
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}
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; CHECK: movq strong_default_global@GOTPCREL(%rip), %rax
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; STATIC: movl $strong_default_global, %eax
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; CHECK32: movl strong_default_global@GOT(%eax), %eax
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@weak_default_global = weak global i32 42
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define i32* @get_weak_default_global() {
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ret i32* @weak_default_global
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}
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; CHECK: movq weak_default_global@GOTPCREL(%rip), %rax
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; STATIC: movl $weak_default_global, %eax
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; CHECK32: movl weak_default_global@GOT(%eax), %eax
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@external_default_global = external global i32
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define i32* @get_external_default_global() {
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ret i32* @external_default_global
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}
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; CHECK: movq external_default_global@GOTPCREL(%rip), %rax
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; STATIC: movl $external_default_global, %eax
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; CHECK32: movl external_default_global@GOT(%eax), %eax
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@strong_local_global = dso_local global i32 42
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define i32* @get_strong_local_global() {
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ret i32* @strong_local_global
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}
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; CHECK: leaq .Lstrong_local_global$local(%rip), %rax
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; STATIC: movl $.Lstrong_local_global$local, %eax
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; CHECK32: leal .Lstrong_local_global$local@GOTOFF(%eax), %eax
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@weak_local_global = weak dso_local global i32 42
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define i32* @get_weak_local_global() {
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ret i32* @weak_local_global
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}
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; CHECK: leaq weak_local_global(%rip), %rax
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; STATIC: movl $weak_local_global, %eax
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; CHECK32: leal weak_local_global@GOTOFF(%eax), %eax
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@external_local_global = external dso_local global i32
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define i32* @get_external_local_global() {
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ret i32* @external_local_global
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}
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; CHECK: leaq external_local_global(%rip), %rax
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; STATIC: movl $external_local_global, %eax
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; CHECK32: leal external_local_global@GOTOFF(%eax), %eax
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@strong_preemptable_global = dso_preemptable global i32 42
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define i32* @get_strong_preemptable_global() {
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ret i32* @strong_preemptable_global
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}
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; CHECK: movq strong_preemptable_global@GOTPCREL(%rip), %rax
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; STATIC: movl $strong_preemptable_global, %eax
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; CHECK32: movl strong_preemptable_global@GOT(%eax), %eax
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@weak_preemptable_global = weak dso_preemptable global i32 42
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define i32* @get_weak_preemptable_global() {
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ret i32* @weak_preemptable_global
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}
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; CHECK ;ADD_LABEL_BACK; movq weak_preemptable_global@GOTPCREL(%rip), %rax
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; STATIC ;ADD_LABEL_BACK; movq weak_preemptable_global@GOTPCREL, %rax
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; CHECK32 ;ADD_LABEL_BACK; movl weak_preemptable_global@GOT(%eax), %eax
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@external_preemptable_global = external dso_preemptable global i32
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define i32* @get_external_preemptable_global() {
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ret i32* @external_preemptable_global
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}
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; CHECK: movq external_preemptable_global@GOTPCREL(%rip), %rax
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; STATIC: movl $external_preemptable_global, %eax
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; CHECK32: movl external_preemptable_global@GOT(%eax), %eax
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; aliases
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@aliasee = global i32 42
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@strong_default_alias = alias i32, i32* @aliasee
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define i32* @get_strong_default_alias() {
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ret i32* @strong_default_alias
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}
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; CHECK: movq strong_default_alias@GOTPCREL(%rip), %rax
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; STATIC: movl $strong_default_alias, %eax
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; CHECK32: movl strong_default_alias@GOT(%eax), %eax
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@weak_default_alias = weak alias i32, i32* @aliasee
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define i32* @get_weak_default_alias() {
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ret i32* @weak_default_alias
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}
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; CHECK: movq weak_default_alias@GOTPCREL(%rip), %rax
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; STATIC: movl $weak_default_alias, %eax
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; CHECK32: movl weak_default_alias@GOT(%eax), %eax
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@strong_local_alias = dso_local alias i32, i32* @aliasee
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define i32* @get_strong_local_alias() {
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ret i32* @strong_local_alias
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}
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; CHECK: leaq strong_local_alias(%rip), %rax
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; STATIC: movl $strong_local_alias, %eax
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; CHECK32: leal strong_local_alias@GOTOFF(%eax), %eax
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@weak_local_alias = weak dso_local alias i32, i32* @aliasee
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define i32* @get_weak_local_alias() {
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ret i32* @weak_local_alias
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}
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; CHECK: leaq weak_local_alias(%rip), %rax
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; STATIC: movl $weak_local_alias, %eax
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; CHECK32: leal weak_local_alias@GOTOFF(%eax), %eax
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@strong_preemptable_alias = dso_preemptable alias i32, i32* @aliasee
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define i32* @get_strong_preemptable_alias() {
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ret i32* @strong_preemptable_alias
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}
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; CHECK: movq strong_preemptable_alias@GOTPCREL(%rip), %rax
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; STATIC: movl $strong_preemptable_alias, %eax
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; CHECK32: movl strong_preemptable_alias@GOT(%eax), %eax
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@weak_preemptable_alias = weak dso_preemptable alias i32, i32* @aliasee
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define i32* @get_weak_preemptable_alias() {
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ret i32* @weak_preemptable_alias
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}
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; CHECK: movq weak_preemptable_alias@GOTPCREL(%rip), %rax
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; STATIC: movl $weak_preemptable_alias, %eax
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; CHECK32: movl weak_preemptable_alias@GOT(%eax), %eax
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; functions
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define void @strong_default_function() {
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ret void
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}
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define void()* @get_strong_default_function() {
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ret void()* @strong_default_function
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}
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; CHECK: movq strong_default_function@GOTPCREL(%rip), %rax
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; STATIC: movl $strong_default_function, %eax
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; CHECK32: movl strong_default_function@GOT(%eax), %eax
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define weak void @weak_default_function() {
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ret void
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}
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define void()* @get_weak_default_function() {
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ret void()* @weak_default_function
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}
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; CHECK: movq weak_default_function@GOTPCREL(%rip), %rax
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; STATIC: movl $weak_default_function, %eax
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; CHECK32: movl weak_default_function@GOT(%eax), %eax
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declare void @external_default_function()
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define void()* @get_external_default_function() {
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ret void()* @external_default_function
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}
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; CHECK: movq external_default_function@GOTPCREL(%rip), %rax
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; STATIC: movl $external_default_function, %eax
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; CHECK32: movl external_default_function@GOT(%eax), %eax
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define dso_local void @strong_local_function() {
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ret void
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}
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define void()* @get_strong_local_function() {
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ret void()* @strong_local_function
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}
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; COMMON: {{^}}strong_local_function:
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; COMMON-NEXT .Lstrong_local_function:
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; CHECK: leaq .Lstrong_local_function$local(%rip), %rax
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; STATIC: movl $.Lstrong_local_function$local, %eax
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; CHECK32: leal .Lstrong_local_function$local@GOTOFF(%eax), %eax
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define weak dso_local void @weak_local_function() {
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ret void
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}
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define void()* @get_weak_local_function() {
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ret void()* @weak_local_function
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}
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; CHECK: leaq weak_local_function(%rip), %rax
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; STATIC: movl $weak_local_function, %eax
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; CHECK32: leal weak_local_function@GOTOFF(%eax), %eax
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declare dso_local void @external_local_function()
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define void()* @get_external_local_function() {
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ret void()* @external_local_function
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}
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; CHECK: leaq external_local_function(%rip), %rax
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; STATIC: movl $external_local_function, %eax
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; CHECK32: leal external_local_function@GOTOFF(%eax), %eax
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define dso_preemptable void @strong_preemptable_function() {
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ret void
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}
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define void()* @get_strong_preemptable_function() {
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ret void()* @strong_preemptable_function
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}
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; CHECK: movq strong_preemptable_function@GOTPCREL(%rip), %rax
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; STATIC: movl $strong_preemptable_function, %eax
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; CHECK32: movl strong_preemptable_function@GOT(%eax), %eax
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define weak dso_preemptable void @weak_preemptable_function() {
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ret void
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}
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define void()* @get_weak_preemptable_function() {
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ret void()* @weak_preemptable_function
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}
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; CHECK: movq weak_preemptable_function@GOTPCREL(%rip), %rax
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; STATIC: movl $weak_preemptable_function, %eax
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; CHECK32: movl weak_preemptable_function@GOT(%eax), %eax
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declare dso_preemptable void @external_preemptable_function()
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define void()* @get_external_preemptable_function() {
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ret void()* @external_preemptable_function
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}
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; CHECK: movq external_preemptable_function@GOTPCREL(%rip), %rax
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; STATIC: movl $external_preemptable_function, %eax
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; CHECK32: movl external_preemptable_function@GOT(%eax), %eax
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; COMMON: {{^}}strong_local_global:
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; COMMON-NEXT .Lstrong_local_global:
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