Switch the linker to having a whitelist of GVs.
This replaces DoNotLinkFromSource with ValuesToLink. It also moves the
computation of ValuesToLink earlier.
It is a bit simpler and an important step in slitting the linker into an
ir mover and a linker proper.
The test change is because we now avoid creating dead declarations.
llvm-svn: 254559
diff --git a/llvm/test/Linker/funcimport.ll b/llvm/test/Linker/funcimport.ll
index 1e6c0ec..38deafd 100644
--- a/llvm/test/Linker/funcimport.ll
+++ b/llvm/test/Linker/funcimport.ll
@@ -26,20 +26,20 @@
; lazily linked and never referenced/materialized.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB1
; IMPORTGLOB1-DAG: define available_externally void @globalfunc1
-; IMPORTGLOB1-DAG: declare void @globalfunc2
; IMPORTGLOB1-DAG: declare void @weakalias
; IMPORTGLOB1-DAG: declare void @analias
-; IMPORTGLOB1-DAG: @linkoncealias = external global
+; IMPORTGLOB1-NOT: @linkoncealias
; IMPORTGLOB1-NOT: @linkoncefunc
+; IMPORTGLOB1-NOT: declare void @globalfunc2
; Ensure that weak alias to a non-imported function is correctly
; turned into a declaration, but that strong alias to an imported function
; is imported as alias.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB2
; IMPORTGLOB2-DAG: declare void @analias
-; IMPORTGLOB2-DAG: declare void @globalfunc1
; IMPORTGLOB2-DAG: define available_externally void @globalfunc2
; IMPORTGLOB2-DAG: declare void @weakalias
+; IMPORTGLOB2-NOT: declare void @globalfunc1
; Ensure that strong alias imported in second pass of importing ends up
; as an alias.
@@ -98,9 +98,9 @@
; reference should turned into an external_weak declaration.
; 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
; IMPORTWEAKFUNC-DAG: Ignoring import request for weak-any function weakfunc
-; IMPORTWEAKFUNC-DAG: @weakvar = extern_weak global i32, align 4
; IMPORTWEAKFUNC-DAG: declare extern_weak void @weakfunc
; IMPORTWEAKFUNC-DAG: define available_externally void @callweakfunc
+; IMPORTWEAKFUNC-NOT: @weakvar = extern_weak global i32, align 4
@globalvar = global i32 1, align 4
@staticvar = internal global i32 1, align 4