| ; RUN: opt < %s -indvars -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" |
| |
| ; It is okay to do LFTR on this loop even though the trip count is a |
| ; division because in this case the division can be optimized to a |
| ; shift. |
| |
| define void @foo(i8* %a, i8 %n) nounwind uwtable ssp { |
| ; CHECK-LABEL: @foo( |
| entry: |
| %e = icmp sgt i8 %n, 3 |
| br i1 %e, label %loop, label %exit |
| |
| loop: |
| ; CHECK-LABEL: loop: |
| %i = phi i8 [ 0, %entry ], [ %i.inc, %loop ] |
| %i1 = phi i8 [ 0, %entry ], [ %i1.inc, %loop ] |
| %i.inc = add nsw i8 %i, 4 |
| %i1.inc = add i8 %i1, 1 |
| store volatile i8 0, i8* %a |
| %c = icmp slt i8 %i, %n |
| ; CHECK-LABEL: %exitcond = icmp ne i8 %i1.inc |
| br i1 %c, label %loop, label %exit |
| |
| exit: |
| ; CHECK-LABEL: exit: |
| ret void |
| } |
