| Chad Rosier | 9ce19fb | 2014-04-09 20:43:40 +0000 | [diff] [blame^] | 1 | ; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s |
| 2 | |
| 3 | ; Check trunc i64 operation is translated as a subregister access |
| 4 | ; eliminating an i32 induction varible. |
| 5 | ; CHECK: add {{x[0-9]+}}, {{x[0-9]+}}, #1 |
| 6 | ; CHECK-NOT: add {{w[0-9]+}}, {{w[0-9]+}}, #1 |
| 7 | ; CHECK-NEXT: cmp {{w[0-9]+}}, {{w[0-9]+}}, uxtw |
| 8 | define void @test1_signed([8 x i8]* nocapture %a, i8* nocapture readonly %box, i8 %limit) { |
| 9 | entry: |
| 10 | %conv = zext i8 %limit to i32 |
| 11 | %cmp223 = icmp eq i8 %limit, 0 |
| 12 | br i1 %cmp223, label %for.end15, label %for.body4.lr.ph.us |
| 13 | |
| 14 | for.body4.us: |
| 15 | %indvars.iv = phi i64 [ 0, %for.body4.lr.ph.us ], [ %indvars.iv.next, %for.body4.us ] |
| 16 | %arrayidx6.us = getelementptr inbounds [8 x i8]* %a, i64 %indvars.iv26, i64 %indvars.iv |
| 17 | %0 = load i8* %arrayidx6.us, align 1 |
| 18 | %idxprom7.us = zext i8 %0 to i64 |
| 19 | %arrayidx8.us = getelementptr inbounds i8* %box, i64 %idxprom7.us |
| 20 | %1 = load i8* %arrayidx8.us, align 1 |
| 21 | store i8 %1, i8* %arrayidx6.us, align 1 |
| 22 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| 23 | %2 = trunc i64 %indvars.iv.next to i32 |
| 24 | %cmp2.us = icmp slt i32 %2, %conv |
| 25 | br i1 %cmp2.us, label %for.body4.us, label %for.cond1.for.inc13_crit_edge.us |
| 26 | |
| 27 | for.body4.lr.ph.us: |
| 28 | %indvars.iv26 = phi i64 [ %indvars.iv.next27, %for.cond1.for.inc13_crit_edge.us ], [ 0, %entry ] |
| 29 | br label %for.body4.us |
| 30 | |
| 31 | for.cond1.for.inc13_crit_edge.us: |
| 32 | %indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 1 |
| 33 | %exitcond28 = icmp eq i64 %indvars.iv26, 3 |
| 34 | br i1 %exitcond28, label %for.end15, label %for.body4.lr.ph.us |
| 35 | |
| 36 | for.end15: |
| 37 | ret void |
| 38 | } |