| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -loop-unroll -codegenprepare < %s | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| 4 | target triple = "armv7--linux-gnueabihf" |
| 5 | |
| 6 | ; CHECK-LABEL: @f |
| 7 | define i32 @f(i32 %a) #0 { |
| 8 | ; CHECK: call i32 @llvm.bitreverse.i32 |
| 9 | entry: |
| 10 | br label %for.body |
| 11 | |
| 12 | for.cond.cleanup: ; preds = %for.body |
| 13 | ret i32 %or |
| 14 | |
| 15 | for.body: ; preds = %for.body, %entry |
| 16 | %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| 17 | %b.07 = phi i32 [ 0, %entry ], [ %or, %for.body ] |
| 18 | %shr = lshr i32 %a, %i.08 |
| 19 | %and = and i32 %shr, 1 |
| 20 | %sub = sub nuw nsw i32 31, %i.08 |
| 21 | %shl = shl i32 %and, %sub |
| 22 | %or = or i32 %shl, %b.07 |
| 23 | %inc = add nuw nsw i32 %i.08, 1 |
| 24 | %exitcond = icmp eq i32 %inc, 32 |
| 25 | br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !3 |
| 26 | } |
| 27 | |
| 28 | attributes #0 = { norecurse nounwind readnone "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="cortex-a8" "target-features"="+dsp,+neon,+vfp3" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| 29 | |
| 30 | !llvm.module.flags = !{!0, !1} |
| 31 | !llvm.ident = !{!2} |
| 32 | |
| 33 | !0 = !{i32 1, !"wchar_size", i32 4} |
| 34 | !1 = !{i32 1, !"min_enum_size", i32 4} |
| 35 | !2 = !{!"clang version 3.8.0"} |
| 36 | !3 = distinct !{!3, !4} |
| 37 | !4 = !{!"llvm.loop.unroll.full"} |