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Beef up some dllexport tests. 

Adds some dllexport tests to verify that:
  - Variables in bss are exported appropriately
  - Non-dllexport symbols aliased to dllexport symbols are not exported
  - Symbols declared as dllexport but are not defined are not exported

We plan to enable dllimport/dllexport support for the PS4, and these
additional tests are for points we noticed in our internal testing.

Patch by Warren Ristow!

Differential Revision: http://reviews.llvm.org/D18682

llvm-svn: 265333
This commit is contained in:
Sean Silva 2016-04-04 19:10:55 +00:00
parent b5792b231b
commit f4517a15b8
1 changed files with 23 additions and 1 deletions
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24
llvm/test/CodeGen/X86/dllexport-x86_64.ll
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@ -52,11 +52,19 @@ define weak_odr dllexport void @weak1() {
; CHECK: .globl WeakVar2
@WeakVar2 = weak_odr dllexport unnamed_addr constant i32 1
; CHECK: .bss
; CHECK: .globl WeakVar3
@WeakVar3 = weak_odr dllexport global i32 0, align 4
; CHECK: .globl alias
; CHECK: alias = notExported
@alias = dllexport alias void(), void()* @notExported
; CHECK: .globl aliasNotExported
; CHECK: aliasNotExported = f1
@aliasNotExported = alias void(), void()* @f1
; CHECK: .globl alias2
; CHECK: alias2 = f1
@alias2 = dllexport alias void(), void()* @f1
@ -72,10 +80,22 @@ define weak_odr dllexport void @weak1() {
@blob = global [6 x i8] c"\B8*\00\00\00\C3", section ".text", align 16
@blob_alias = dllexport alias i32 (), bitcast ([6 x i8]* @blob to i32 ()*)
; Verify item that should not be exported does not appear in the export table.
@exportedButNotDefinedVariable = external dllexport global i32
declare dllexport void @exportedButNotDefinedFunction()
define void @foo() {
entry:
store i32 4, i32* @exportedButNotDefinedVariable, align 4
call void @exportedButNotDefinedFunction()
ret void
}
; Verify items that should not be exported do not appear in the export table.
; We use a separate check prefix to avoid confusion between -NOT and -SAME.
; NOTEXPORTED: .section .drectve
; NOTEXPORTED-NOT: notExported
; NOTEXPORTED-NOT: aliasNotExported
; NOTEXPORTED-NOT: exportedButNotDefinedVariable
; NOTEXPORTED-NOT: exportedButNotDefinedFunction
; CHECK: .section .drectve
; WIN32: /EXPORT:f1
@ -88,6 +108,7 @@ define weak_odr dllexport void @weak1() {
; WIN32-SAME: /EXPORT:Var3,DATA
; WIN32-SAME: /EXPORT:WeakVar1,DATA
; WIN32-SAME: /EXPORT:WeakVar2,DATA
; WIN32-SAME: /EXPORT:WeakVar3,DATA
; WIN32-SAME: /EXPORT:alias
; WIN32-SAME: /EXPORT:alias2
; WIN32-SAME: /EXPORT:alias3
@ -103,6 +124,7 @@ define weak_odr dllexport void @weak1() {
; MINGW-SAME: -export:Var3,data
; MINGW-SAME: -export:WeakVar1,data
; MINGW-SAME: -export:WeakVar2,data
; MINGW-SAME: -export:WeakVar3,data
; MINGW-SAME: -export:alias
; MINGW-SAME: -export:alias2
; MINGW-SAME: -export:alias3