I mean it cannot find the intrinsic at all:

# ./Release/bin/llc < test/CodeGen/R600/llvm.sin.ll -march=r600 -mcpu=r600
LLVM ERROR: Cannot select: 0x8a5570: f32 = fsin 0x8a5670 [ORD=2] [ID=3]
  0x8a5670: f32,ch = CopyFromReg 0x871928, 0x8a5970 [ID=2]
    0x8a5970: f32 = Register %T0_X [ID=1]
In function: test

litte different with eg. -mcpu=hainan: 

# ./Release/bin/llc < test/CodeGen/R600/llvm.sin.ll -march=r600 -mcpu=hainan
LLVM ERROR: Cannot select: target intrinsic %llvm.AMDGPU.store.output