LLVM 3.5.0 rejects aliases used by LLVM codegen

LLVM HEAD has changed the behavior of aliases to reject references to things other than definitions. This unfortunately means that the handling of externs breaks,

"inplace/bin/ghc-stage1" -static  -H64m -O0 -fllvm -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -package-name rts -dcmm-lint      -i -irts -irts/dist/build -irts/dist/build/autogen -Irts/dist/build -Irts/dist/build/autogen           -O2    -c rts/Apply.cmm -o rts/dist/build/Apply.o
You are using a new version of LLVM that hasn't been tested yet!
We will try though...
Alias must point to a definition
i8* @"barf$alias"
Alias must point to a definition
i8* @"stg_gc_unpt_r1$alias"
Alias must point to a definition
i8* @"stg_apply_interp_info$alias"
Alias must point to a definition
i8* @"stg_yield_to_interpreter$alias"
Alias must point to a definition
i8* @"stg_ap_stack_entries$alias"
Alias must point to a definition
i8* @"__stg_gc_enter_1$alias"
Alias must point to a definition
i8* @"stg_upd_frame_info$alias"
LLVM ERROR: Broken module found, compilation aborted!

In reference to the following aliases,.

@barf = external global i8
@barf$alias = alias private i8* @barf
@stg_gc_unpt_r1 = external global i8
@stg_gc_unpt_r1$alias = alias private i8* @stg_gc_unpt_r1
@stg_apply_interp_info = external global i8
@stg_apply_interp_info$alias = alias private i8* @stg_apply_interp_info
@stg_yield_to_interpreter = external global i8
@stg_yield_to_interpreter$alias = alias private i8* @stg_yield_to_interpreter
@stg_ap_stack_entries = external global i8
@stg_ap_stack_entries$alias = alias private i8* @stg_ap_stack_entries
@__stg_gc_enter_1 = external global i8
@__stg_gc_enter_1$alias = alias private i8* @__stg_gc_enter_1
@stg_upd_frame_info = external global i8
@stg_upd_frame_info$alias = alias private i8* @stg_upd_frame_info

Trac metadata

Trac field	Value
Version	7.8.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	high
Resolution	Unresolved
Component	Compiler
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