diff options
Diffstat (limited to 'llvm/test/Linker/alias.ll')
| -rw-r--r-- | llvm/test/Linker/alias.ll | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/llvm/test/Linker/alias.ll b/llvm/test/Linker/alias.ll index 4e2072396d4..ae9da70174e 100644 --- a/llvm/test/Linker/alias.ll +++ b/llvm/test/Linker/alias.ll @@ -1,16 +1,37 @@ -; RUN: llvm-link %s %S/Inputs/alias.ll -S -o - | FileCheck %s -; RUN: llvm-link %S/Inputs/alias.ll %s -S -o - | FileCheck %s +; RUN: llvm-link %s %S/Inputs/alias.ll -S -o - | FileCheck --check-prefix=C1 %s +; RUN: llvm-link %S/Inputs/alias.ll %s -S -o - | FileCheck --check-prefix=C2 %s + +; FIXME: +; The C1 direction is incorrect. +; When moving an alias to an existing module and we want to discard the aliasee +; (the C2 case), the IRMover knows to copy the aliasee as internal. +; When moving a replacement to an aliasee to a module that has an alias (C1), +; a replace all uses with blindly changes the alias. +; The C1 case doesn't happen when using a system linker with a plugin because +; the linker does full symbol resolution first. +; Given that this is a problem only with llvm-link and its 1 module at a time +; linking, it should probably learn to changes the aliases in the destination +; before using the IRMover. @foo = weak global i32 0 -; CHECK-DAG: @foo = alias i32, i32* @zed +; C1-DAG: @foo = alias i32, i32* @zed +; C2-DAG: @foo = alias i32, i32* @zed @bar = alias i32, i32* @foo -; CHECK-DAG: @bar = alias i32, i32* @foo +; C1-DAG: @bar = alias i32, i32* @foo + +; C2-DAG: @foo.1 = internal global i32 0 +; C2-DAG: @bar = alias i32, i32* @foo.1 @foo2 = weak global i32 0 -; CHECK-DAG: @foo2 = alias i16, bitcast (i32* @zed to i16*) +; C1-DAG: @foo2 = alias i16, bitcast (i32* @zed to i16*) +; C2-DAG: @foo2 = alias i16, bitcast (i32* @zed to i16*) @bar2 = alias i32, i32* @foo2 -; CHECK-DAG: @bar2 = alias i32, bitcast (i16* @foo2 to i32*) +; C1-DAG: @bar2 = alias i32, bitcast (i16* @foo2 to i32*) + +; C2-DAG: @foo2.2 = internal global i32 0 +; C2-DAG: @bar2 = alias i32, i32* @foo2.2 -; CHECK-DAG: @zed = global i32 42 +; C1-DAG: @zed = global i32 42 +; C2-DAG: @zed = global i32 42 |
