[PPC] Getindex on Atomic{Float64} or Atomic{Float32}

[vchuravy]

From worker 85: running testset threads...

      From worker 85:   LLVM ERROR: Cannot select: 0x2379e990: i64 = any_extend 0x2379ef40
      From worker 85:     0x2379ef40: f32 = bitcast 0x237a3290
      From worker 85:       0x237a3290: i32,ch = AtomicLoad<Volatile LD4[%3](align=16)> 0x231772e0, 0x23452470
      From worker 85:         0x23452470: i64,ch = CopyFromReg 0x231772e0, Register:i64 %0
      From worker 85:           0x2379a338: i64 = Register %0
      From worker 85:   In function: julia_getindex_16213

[vchuravy]

[vchuravy@service0001 julia]$ cat bugpoint-reduced-simplified.ll
; ModuleID = 'bugpoint-reduced-simplified.bc'
source_filename = "getindex"
target datalayout = "e-m:e-i64:64-n32:64-ni:10:11:12:13"
target triple = "powerpc64le-unknown-linux-gnu"

define void @julia_getindex_185() {
top:
  %rv.i = load atomic double, double* undef acquire, align 16
  ret void
}

!llvm.module.flags = !{!0}

!0 = !{i32 1, !"Debug Info Version", i32 3}

Fails with:

[vchuravy@service0001 julia]$ usr/tools/llc --code-model=large --relocation-model=static -filetype=obj bugpoint-reduced-simplified.ll 
Intrinsic has incorrect argument type!
void (double)* @llvm.ppc.cfence.f64
in function julia_getindex_185
LLVM ERROR: Broken function found, compilation aborted!