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llvm-mirror/test/Linker/metadata-attach.ll
Jin Lin 673715d427 Preserve the lexical order for global variables during llvm-link merge
The order of global variables is generated in the order of recursively materializing variables if the global variable has the attribute of hasLocalLinkage or hasLinkOnceLinkage during the module merging. In practice, it is often the exact reverse of source order. This new order may cause performance regression.

The change is to preserve the original lexical order for global variables.

Reviewed By: jdoerfert, dexonsmith

Differential Revision: https://reviews.llvm.org/D94202
2021-04-26 10:11:34 -07:00

50 lines
1.5 KiB
LLVM

; RUN: llvm-link %s -S -o - | FileCheck %s
; RUN: llvm-link %s %S/Inputs/metadata-attach.ll -S -o - | FileCheck --check-prefix=CHECK-LINKED1 %s
; RUN: llvm-link %S/Inputs/metadata-attach.ll %s -S -o - | FileCheck --check-prefix=CHECK-LINKED2 %s
; CHECK: @g1 = global i32 0, !attach !0{{$}}
; CHECK-LINKED1: @g1 = global i32 0, !attach !0{{$}}
@g1 = global i32 0, !attach !0
; CHECK: @g2 = external global i32, !attach !0{{$}}
; CHECK: @g3 = weak global i32 1, !attach !0{{$}}
; CHECK-LINKED1: @g2 = global i32 1, !attach !1{{$}}
@g2 = external global i32, !attach !0
; CHECK-LINKED1: @g3 = global i32 2, !attach !1{{$}}
@g3 = weak global i32 1, !attach !0
; CHECK-LINKED2: @g1 = global i32 0, !attach !0{{$}}
; CHECK-LINKED2: @g2 = global i32 1, !attach !1{{$}}
; CHECK-LINKED2: @g3 = global i32 2, !attach !1{{$}}
; CHECK: define void @f1() !attach !0 {
; CHECK-LINKED1: define void @f1() !attach !0 {
define void @f1() !attach !0 {
call void @f2()
store i32 0, i32* @g2
ret void
}
; CHECK: declare !attach !0 void @f2()
; CHECK-LINKED1: define void @f2() !attach !1 {
declare !attach !0 void @f2()
; CHECK: define weak void @f3() !attach !0 {
; CHECK-LINKED1: define void @f3() !attach !1 {
define weak void @f3() !attach !0 {
ret void
}
; CHECK-LINKED2: define void @f2() !attach !1 {
; CHECK-LINKED2: define void @f3() !attach !1 {
; CHECK-LINKED2: define void @f1() !attach !0 {
; CHECK-LINKED1: !0 = !{i32 0}
; CHECK-LINKED1: !1 = !{i32 1}
; CHECK-LINKED2: !0 = !{i32 0}
; CHECK-LINKED2: !1 = !{i32 1}
!0 = !{i32 0}