Rafael Espindola 713cab059e Optimize more linkonce_odr values during LTO.
When a linkonce_odr value that is on the dso list is not unnamed_addr
we can still look to see if anything is actually using its address. If
not, it is safe to hide it.

This patch implements that by moving GlobalStatus to Transforms/Utils
and using it in Internalize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193090 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-21 17:14:55 +00:00

67 lines
2.3 KiB
LLVM

; No arguments means internalize everything
; RUN: opt < %s -internalize -S | FileCheck --check-prefix=ALL %s
; Non existent files should be treated as if they were empty (so internalize
; everything)
; RUN: opt < %s -internalize -internalize-public-api-file /nonexistent/file 2> /dev/null -S | FileCheck --check-prefix=ALL %s
; Internalize all but foo and j
; RUN: opt < %s -internalize -internalize-public-api-list foo -internalize-public-api-list j -S | FileCheck --check-prefix=FOO_AND_J %s
; RUN: opt < %s -S -internalize -internalize-public-api-list bar -internalize-public-api-list foo -internalize-public-api-file /nonexistent/file 2> /dev/null | FileCheck --check-prefix=FOO_AND_BAR %s
; -file and -list options should be merged, the apifile contains foo and j
; RUN: opt < %s -internalize -internalize-public-api-list bar -internalize-public-api-file %S/apifile -S | FileCheck --check-prefix=FOO_J_AND_BAR %s
; Put zed1 and zed2 in the symbol table. If the address is not relevant, we
; internalize them.
; RUN: opt < %s -internalize -internalize-dso-list zed1,zed2,zed3 -S | FileCheck --check-prefix=ZEDS %s
; ALL: @i = internal global
; FOO_AND_J: @i = internal global
; FOO_AND_BAR: @i = internal global
; FOO_J_AND_BAR: @i = internal global
@i = global i32 0
; ALL: @j = internal global
; FOO_AND_J: @j = global
; FOO_AND_BAR: @j = internal global
; FOO_J_AND_BAR: @j = global
@j = global i32 0
; ZEDS: @zed1 = internal global i32 42
@zed1 = linkonce_odr global i32 42
; ZEDS: @zed2 = internal unnamed_addr global i32 42
@zed2 = linkonce_odr unnamed_addr global i32 42
; ZEDS: @zed3 = linkonce_odr global i32 42
@zed3 = linkonce_odr global i32 42
define i32* @get_zed3() {
ret i32* @zed3
}
; ALL: define internal void @main() {
; FOO_AND_J: define internal void @main() {
; FOO_AND_BAR: define internal void @main() {
; FOO_J_AND_BAR: define internal void @main() {
define void @main() {
ret void
}
; ALL: define internal void @foo() {
; FOO_AND_J: define void @foo() {
; FOO_AND_BAR: define void @foo() {
; FOO_J_AND_BAR: define void @foo() {
define void @foo() {
ret void
}
; ALL: define available_externally void @bar() {
; FOO_AND_J: define available_externally void @bar() {
; FOO_AND_BAR: define available_externally void @bar() {
; FOO_J_AND_BAR: define available_externally void @bar() {
define available_externally void @bar() {
ret void
}