forked from OSchip/llvm-project
51 lines
1.6 KiB
LLVM
51 lines
1.6 KiB
LLVM
; RUN: opt -loop-unroll-and-jam -allow-unroll-and-jam -unroll-and-jam-count=2 -S < %s | FileCheck %s
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;
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; Check that the disable_nonforced loop property is honored by
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; loop unroll-and-jam.
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;
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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; CHECK-LABEL: disable_nonforced
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; CHECK: load
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; CHECK-NOT: load
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define void @disable_nonforced(i32 %I, i32 %J, i32* noalias nocapture %A, i32* noalias nocapture readonly %B) {
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entry:
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%cmp = icmp ne i32 %J, 0
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%cmp122 = icmp ne i32 %I, 0
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%or.cond = and i1 %cmp, %cmp122
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br i1 %or.cond, label %for.outer.preheader, label %for.end
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for.outer.preheader:
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br label %for.outer
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for.outer:
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%i.us = phi i32 [ %add8.us, %for.latch ], [ 0, %for.outer.preheader ]
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br label %for.inner
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for.inner:
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%j.us = phi i32 [ 0, %for.outer ], [ %inc.us, %for.inner ]
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%sum1.us = phi i32 [ 0, %for.outer ], [ %add.us, %for.inner ]
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%arrayidx.us = getelementptr inbounds i32, i32* %B, i32 %j.us
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%0 = load i32, i32* %arrayidx.us, align 4
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%add.us = add i32 %0, %sum1.us
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%inc.us = add nuw i32 %j.us, 1
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%exitcond = icmp eq i32 %inc.us, %J
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br i1 %exitcond, label %for.latch, label %for.inner
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for.latch:
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%add.us.lcssa = phi i32 [ %add.us, %for.inner ]
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%arrayidx6.us = getelementptr inbounds i32, i32* %A, i32 %i.us
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store i32 %add.us.lcssa, i32* %arrayidx6.us, align 4
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%add8.us = add nuw i32 %i.us, 1
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%exitcond25 = icmp eq i32 %add8.us, %I
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br i1 %exitcond25, label %for.end.loopexit, label %for.outer, !llvm.loop !0
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for.end.loopexit:
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br label %for.end
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for.end:
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ret void
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}
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!0 = distinct !{!0, !{!"llvm.loop.disable_nonforced"}}
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