102 lines
4.1 KiB
LLVM
102 lines
4.1 KiB
LLVM
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; REQUIRES: asserts
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; RUN: opt < %s -passes='loop-vectorize' -force-vector-width=2 -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 --debug-only=loop-vectorize -S 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64-v256:256:256-v512:512:512"
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; Currently we cannot handle reduction loops.
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; CHECK: LV: Checking a loop in "f1"
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; CHECK: LEV: Unable to vectorize epilogue because the loop is not a supported candidate.
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define signext i32 @f1(i8* noalias %A, i32 signext %n) {
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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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%sum.02 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv
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%0 = load i8, i8* %arrayidx, align 1
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%conv = zext i8 %0 to i32
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%add = add nuw nsw i32 %sum.02, %conv
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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
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for.end.loopexit: ; preds = %for.body
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%add.lcssa = phi i32 [ %add, %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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%sum.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.end.loopexit ]
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ret i32 %sum.0.lcssa
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}
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; Currently we cannot handle live-out variables that are recurrences.
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; CHECK: LV: Checking a loop in "f2"
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; CHECK: LEV: Unable to vectorize epilogue because the loop is not a supported candidate.
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define signext i32 @f2(i8* noalias %A, i32 signext %n) {
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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 i8, i8* %A, i64 %indvars.iv
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%0 = load i8, i8* %arrayidx, align 1
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%add = add i8 %0, 1
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%arrayidx3 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv
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store i8 %add, i8* %arrayidx3, align 1
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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
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for.end.loopexit: ; preds = %for.body
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%inc.lcssa.wide = phi i64 [ %indvars.iv.next, %for.body ]
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%1 = trunc i64 %inc.lcssa.wide to i32
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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%i.0.lcssa = phi i32 [ 0, %entry ], [ %1, %for.end.loopexit ]
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ret i32 %i.0.lcssa
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}
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; Currently we cannot handle widended/truncated inductions.
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; CHECK: LV: Checking a loop in "f3"
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; CHECK: LEV: Unable to vectorize epilogue because the loop is not a supported candidate.
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define void @f3(i8* noalias %A, i32 signext %n) {
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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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%0 = trunc i64 %indvars.iv to i32
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%conv = trunc i32 %0 to i8
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv
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store i8 %conv, i8* %arrayidx, align 1
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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
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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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