forked from OSchip/llvm-project
95 lines
3.6 KiB
LLVM
95 lines
3.6 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -passes='loop-vectorize' -debug-only=loop-vectorize -S 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64-S128-v256:256:256-v512:512:512"
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; CHECK: LV: Checking a loop in "f1"
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; CHECK: LV: Loop hints: force=? width=0 interleave=1
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define dso_local void @f1(i32 signext %n, i32* %A) {
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entry:
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%cmp1 = icmp sgt i32 %n, 0
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br i1 %cmp1, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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%wide.trip.count = zext i32 %n to i64
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%0 = trunc i64 %indvars.iv to i32
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store i32 %0, i32* %arrayidx, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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br i1 %exitcond, label %for.body, label %for.end.loopexit, !llvm.loop !1
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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; CHECK: LV: Checking a loop in "f2"
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; CHECK: LV: Loop hints: force=? width=0 interleave=4
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define dso_local void @f2(i32 signext %n, i32* %A) {
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entry:
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%cmp1 = icmp sgt i32 %n, 0
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br i1 %cmp1, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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%wide.trip.count = zext i32 %n to i64
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%0 = trunc i64 %indvars.iv to i32
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store i32 %0, i32* %arrayidx, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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br i1 %exitcond, label %for.body, label %for.end.loopexit, !llvm.loop !3
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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; CHECK: LV: Checking a loop in "f3"
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; CHECK: LV: Loop hints: force=? width=0 interleave=1
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define dso_local void @f3(i32 signext %n, i32* %A) {
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entry:
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%cmp1 = icmp sgt i32 %n, 0
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br i1 %cmp1, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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%wide.trip.count = zext i32 %n to i64
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%0 = trunc i64 %indvars.iv to i32
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store i32 %0, i32* %arrayidx, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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br i1 %exitcond, label %for.body, label %for.end.loopexit, !llvm.loop !6
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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!1 = distinct !{!1, !2}
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!2 = !{!"llvm.loop.unroll.disable"}
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!3 = distinct !{!3, !4, !5}
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!4 = !{!"llvm.loop.unroll.disable"}
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!5 = !{!"llvm.loop.interleave.count", i32 4}
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!6 = distinct !{!6, !7, !8}
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!7 = !{!"llvm.loop.mustprogress"}
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!8 = !{!"llvm.loop.unroll.count", i32 1}
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