1*9880d681SAndroid Build Coastguard Worker; RUN: llvm-link %s %S/Inputs/alias.ll -S -o - | FileCheck --check-prefix=C1 %s 2*9880d681SAndroid Build Coastguard Worker; RUN: llvm-link %S/Inputs/alias.ll %s -S -o - | FileCheck --check-prefix=C2 %s 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; FIXME: 5*9880d681SAndroid Build Coastguard Worker; The C1 direction is incorrect. 6*9880d681SAndroid Build Coastguard Worker; When moving an alias to an existing module and we want to discard the aliasee 7*9880d681SAndroid Build Coastguard Worker; (the C2 case), the IRMover knows to copy the aliasee as internal. 8*9880d681SAndroid Build Coastguard Worker; When moving a replacement to an aliasee to a module that has an alias (C1), 9*9880d681SAndroid Build Coastguard Worker; a replace all uses with blindly changes the alias. 10*9880d681SAndroid Build Coastguard Worker; The C1 case doesn't happen when using a system linker with a plugin because 11*9880d681SAndroid Build Coastguard Worker; the linker does full symbol resolution first. 12*9880d681SAndroid Build Coastguard Worker; Given that this is a problem only with llvm-link and its 1 module at a time 13*9880d681SAndroid Build Coastguard Worker; linking, it should probably learn to changes the aliases in the destination 14*9880d681SAndroid Build Coastguard Worker; before using the IRMover. 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Worker@foo = weak global i32 0 17*9880d681SAndroid Build Coastguard Worker; C1-DAG: @foo = alias i32, i32* @zed 18*9880d681SAndroid Build Coastguard Worker; C2-DAG: @foo = alias i32, i32* @zed 19*9880d681SAndroid Build Coastguard Worker 20*9880d681SAndroid Build Coastguard Worker@bar = alias i32, i32* @foo 21*9880d681SAndroid Build Coastguard Worker; C1-DAG: @bar = alias i32, i32* @foo 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Worker; C2-DAG: @foo.1 = internal global i32 0 24*9880d681SAndroid Build Coastguard Worker; C2-DAG: @bar = alias i32, i32* @foo.1 25*9880d681SAndroid Build Coastguard Worker 26*9880d681SAndroid Build Coastguard Worker@foo2 = weak global i32 0 27*9880d681SAndroid Build Coastguard Worker; C1-DAG: @foo2 = alias i16, bitcast (i32* @zed to i16*) 28*9880d681SAndroid Build Coastguard Worker; C2-DAG: @foo2 = alias i16, bitcast (i32* @zed to i16*) 29*9880d681SAndroid Build Coastguard Worker 30*9880d681SAndroid Build Coastguard Worker@bar2 = alias i32, i32* @foo2 31*9880d681SAndroid Build Coastguard Worker; C1-DAG: @bar2 = alias i32, bitcast (i16* @foo2 to i32*) 32*9880d681SAndroid Build Coastguard Worker 33*9880d681SAndroid Build Coastguard Worker; C2-DAG: @foo2.2 = internal global i32 0 34*9880d681SAndroid Build Coastguard Worker; C2-DAG: @bar2 = alias i32, i32* @foo2.2 35*9880d681SAndroid Build Coastguard Worker 36*9880d681SAndroid Build Coastguard Worker; C1-DAG: @zed = global i32 42 37*9880d681SAndroid Build Coastguard Worker; C2-DAG: @zed = global i32 42 38