|  | ; RUN: opt < %s -passes=loop-vectorize -mattr=avx,+slow-unaligned-mem-32 -S | FileCheck %s --check-prefix=SLOWMEM32 --check-prefix=CHECK | 
|  | ; RUN: opt < %s -passes=loop-vectorize -mattr=avx,-slow-unaligned-mem-32 -S | FileCheck %s --check-prefix=FASTMEM32 --check-prefix=CHECK | 
|  |  | 
|  | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" | 
|  | target triple = "x86_64-apple-macosx10.8.0" | 
|  |  | 
|  | ; CHECK-LABEL: @read_mod_write_single_ptr( | 
|  | ; CHECK: load <8 x float> | 
|  | ; CHECK: ret i32 | 
|  | define i32 @read_mod_write_single_ptr(ptr nocapture %a, i32 %n) nounwind uwtable ssp { | 
|  | %1 = icmp sgt i32 %n, 0 | 
|  | br i1 %1, label %.lr.ph, label %._crit_edge | 
|  |  | 
|  | .lr.ph:                                           ; preds = %0, %.lr.ph | 
|  | %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ] | 
|  | %2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv | 
|  | %3 = load float, ptr %2, align 4 | 
|  | %4 = fmul float %3, 3.000000e+00 | 
|  | store float %4, ptr %2, align 4 | 
|  | %indvars.iv.next = add i64 %indvars.iv, 1 | 
|  | %lftr.wideiv = trunc i64 %indvars.iv.next to i32 | 
|  | %exitcond = icmp eq i32 %lftr.wideiv, %n | 
|  | br i1 %exitcond, label %._crit_edge, label %.lr.ph | 
|  |  | 
|  | ._crit_edge:                                      ; preds = %.lr.ph, %0 | 
|  | ret i32 undef | 
|  | } | 
|  |  | 
|  |  | 
|  | ; CHECK-LABEL: @read_mod_i64( | 
|  | ; SLOWMEM32: load <2 x i64> | 
|  | ; FASTMEM32: load <4 x i64> | 
|  | ; CHECK: ret i32 | 
|  | define i32 @read_mod_i64(ptr nocapture %a, i32 %n) nounwind uwtable ssp { | 
|  | %1 = icmp sgt i32 %n, 0 | 
|  | br i1 %1, label %.lr.ph, label %._crit_edge | 
|  |  | 
|  | .lr.ph:                                           ; preds = %0, %.lr.ph | 
|  | %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ] | 
|  | %2 = getelementptr inbounds i64, ptr %a, i64 %indvars.iv | 
|  | %3 = load i64, ptr %2, align 4 | 
|  | %4 = add i64 %3, 3 | 
|  | store i64 %4, ptr %2, align 4 | 
|  | %indvars.iv.next = add i64 %indvars.iv, 1 | 
|  | %lftr.wideiv = trunc i64 %indvars.iv.next to i32 | 
|  | %exitcond = icmp eq i32 %lftr.wideiv, %n | 
|  | br i1 %exitcond, label %._crit_edge, label %.lr.ph | 
|  |  | 
|  | ._crit_edge:                                      ; preds = %.lr.ph, %0 | 
|  | ret i32 undef | 
|  | } | 
|  |  |