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1; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-none-apple-ios7.0 -mcpu=cyclone | FileCheck %s2 3; Check trunc i64 operation is translated as a subregister access4; eliminating an i32 induction varible.5 6; CHECK-NOT: add {{x[0-9]+}}, {{x[0-9]+}}, #17; CHECK: add {{w[0-9]+}}, {{w[0-9]+}}, #18; CHECK-NEXT: cmp {{w[0-9]+}}, {{w[0-9]+}}9define void @test1_signed(ptr nocapture %a, ptr nocapture readonly %box, i8 %limit, i64 %inv) minsize {10entry:11 %conv = zext i8 %limit to i3212 %cmp223 = icmp eq i8 %limit, 013 br i1 %cmp223, label %for.end15, label %for.body4.lr.ph.us14 15for.body4.us:16 %indvars.iv = phi i64 [ 0, %for.body4.lr.ph.us ], [ %indvars.iv.next, %for.body4.us ]17 %arrayidx6.us = getelementptr inbounds [8 x i8], ptr %a, i64 %indvars.iv, i64 %inv18 %0 = load i8, ptr %arrayidx6.us, align 119 %idxprom7.us = zext i8 %0 to i6420 %arrayidx8.us = getelementptr inbounds i8, ptr %box, i64 %idxprom7.us21 %1 = load i8, ptr %arrayidx8.us, align 122 store i8 %1, ptr %arrayidx6.us, align 123 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 124 %2 = trunc i64 %indvars.iv.next to i3225 %cmp2.us = icmp slt i32 %2, %conv26 br i1 %cmp2.us, label %for.body4.us, label %for.cond1.for.inc13_crit_edge.us27 28for.body4.lr.ph.us:29 %indvars.iv26 = phi i64 [ %indvars.iv.next27, %for.cond1.for.inc13_crit_edge.us ], [ 0, %entry ]30 br label %for.body4.us31 32for.cond1.for.inc13_crit_edge.us:33 %indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 134 %exitcond28 = icmp eq i64 %indvars.iv26, 335 br i1 %exitcond28, label %for.end15, label %for.body4.lr.ph.us36 37for.end15:38 ret void39}40