1; RUN: opt -passes='default<Oz>' -S < %s | FileCheck %s 2 3; Forcing vectorization should allow for more aggressive loop-rotation with 4; -Oz, because LV requires rotated loops. Make sure the loop in @foo is 5; vectorized with -Oz. 6 7target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" 8target triple = "arm64-apple-ios5.0.0" 9 10define void @foo(ptr noalias nocapture %ptrA, ptr noalias nocapture readonly %ptrB, i64 %size) { 11; CHECK-LABEL: @foo( 12; CHECK: fmul <4 x float> 13; 14entry: 15 br label %for.cond 16 17for.cond: ; preds = %for.body, %entry 18 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 19 %exitcond = icmp eq i64 %indvars.iv, %size 20 br i1 %exitcond, label %for.cond.cleanup, label %for.body 21 22for.body: ; preds = %for.cond 23 %arrayidx = getelementptr inbounds float, ptr %ptrB, i64 %indvars.iv 24 %0 = load float, ptr %arrayidx, align 4 25 %arrayidx2 = getelementptr inbounds float, ptr %ptrA, i64 %indvars.iv 26 %1 = load float, ptr %arrayidx2, align 4 27 %mul3 = fmul float %0, %1 28 store float %mul3, ptr %arrayidx2, align 4 29 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 30 br label %for.cond, !llvm.loop !0 31 32for.cond.cleanup: ; preds = %for.cond 33 ret void 34} 35 36!0 = distinct !{!0, !1} 37!1 = !{!"llvm.loop.vectorize.enable", i1 true} 38