llvm-6502/test/Transforms/InstCombine/cast_ld_addr_space.ll
Mon P Wang 6753f959d2 Instrcombine should not change load(cast p) to cast(load p) if the cast
changes the address space of the pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64035 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-07 22:19:29 +00:00

19 lines
1.0 KiB
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep bitcast | count 1
; InstCombine can not 'load (cast P)' -> cast (load P)' if the cast changes
; the address space.
define void @test2(i8 addrspace(1)* %source, <2 x i8> addrspace(1)* %dest) {
entry:
%arrayidx1 = bitcast <2 x i8> addrspace(1)* %dest to <2 x i8> addrspace(1)*
%conv = bitcast i8 addrspace(1)* %source to <16 x i8>*
%arrayidx22 = bitcast <16 x i8>* %conv to <16 x i8>*
%tmp3 = load <16 x i8>* %arrayidx22
%arrayidx223 = bitcast i8 addrspace(1)* %source to i8*
%tmp4 = load i8* %arrayidx223
%tmp5 = insertelement <2 x i8> undef, i8 %tmp4, i32 0
%splat = shufflevector <2 x i8> %tmp5, <2 x i8> undef, <2 x i32> zeroinitializer
store <2 x i8> %splat, <2 x i8> addrspace(1)* %arrayidx1
ret void
}