mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
30 lines
866 B
LLVM
30 lines
866 B
LLVM
|
; 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
|
||
|
|
}
|