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- ; 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
- }
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