forked from OSchip/llvm-project
39 lines
1.3 KiB
LLVM
39 lines
1.3 KiB
LLVM
|
; RUN: opt < %s -loop-vectorize -force-vector-width=4 -force-vector-interleave=2 -dce -instcombine -S | FileCheck %s
|
||
|
|
|
||
|
|
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"
|
||
|
|
|
||
|
|
@a = common global [2048 x i32] zeroinitializer, align 16
|
||
|
|
|
||
|
|
; This is the loop.
|
||
|
|
; for (i=0; i<n; i++){
|
||
|
|
; a[i] += i;
|
||
|
|
; }
|
||
|
|
;CHECK-LABEL: @inc(
|
||
|
|
;CHECK: load <4 x i32>
|
||
|
|
;CHECK: load <4 x i32>
|
||
|
|
;CHECK: add nsw <4 x i32>
|
||
|
|
;CHECK: add nsw <4 x i32>
|
||
|
|
;CHECK: store <4 x i32>
|
||
|
|
;CHECK: store <4 x i32>
|
||
|
|
;CHECK: ret void
|
||
|
|
define void @inc(i32 %n) nounwind uwtable noinline 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 [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv
|
||
|
|
%3 = load i32, i32* %2, align 4
|
||
|
|
%4 = trunc i64 %indvars.iv to i32
|
||
|
|
%5 = add nsw i32 %3, %4
|
||
|
|
store i32 %5, i32* %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 void
|
||
|
|
}
|
||
|
|
|