derek.holloway
7502bf64a4
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51 lines
3.0 KiB
LLVM
51 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 2
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; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
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@.str = private unnamed_addr constant [3 x i8] c"%x\00", align 1
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define dso_local i32 @test_loop(ptr nocapture noundef readonly %x) {
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; CHECK-LABEL: 'test_loop'
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; CHECK-NEXT: Classifying expressions for: @test_loop
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; CHECK-NEXT: %i.03 = phi i64 [ 1, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,10) S: [1,10) Exits: 9 LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %conv = shl nuw nsw i64 %i.03, 32
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; CHECK-NEXT: --> {4294967296,+,4294967296}<nuw><nsw><%for.body> U: [4294967296,38654705665) S: [4294967296,38654705665) Exits: 38654705664 LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %sext = add nsw i64 %conv, -4294967296
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; CHECK-NEXT: --> {0,+,4294967296}<nuw><nsw><%for.body> U: [0,34359738369) S: [0,34359738369) Exits: 34359738368 LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %idxprom = ashr exact i64 %sext, 32
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,9) S: [0,9) Exits: 8 LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %arrayidx = getelementptr inbounds i32, ptr %x, i64 %idxprom
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; CHECK-NEXT: --> {%x,+,4}<nuw><%for.body> U: full-set S: full-set Exits: (32 + %x) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %0 = load i32, ptr %arrayidx, align 4
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; CHECK-NEXT: --> %0 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.body: Variant }
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; CHECK-NEXT: %call = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %0)
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; CHECK-NEXT: --> %call U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.body: Variant }
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; CHECK-NEXT: %inc = add nuw nsw i64 %i.03, 1
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; CHECK-NEXT: --> {2,+,1}<nuw><nsw><%for.body> U: [2,11) S: [2,11) Exits: 10 LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_loop
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; CHECK-NEXT: Loop %for.body: backedge-taken count is i64 8
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 8
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is i64 8
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; CHECK-NEXT: Loop %for.body: Trip multiple is 9
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;
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %for.body
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ret i32 0
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for.body: ; preds = %entry, %for.body
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%i.03 = phi i64 [ 1, %entry ], [ %inc, %for.body ]
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%conv = shl nuw nsw i64 %i.03, 32
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%sext = add nsw i64 %conv, -4294967296
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%idxprom = ashr exact i64 %sext, 32
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%arrayidx = getelementptr inbounds i32, ptr %x, i64 %idxprom
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%0 = load i32, ptr %arrayidx, align 4
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%call = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %0)
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%inc = add nuw nsw i64 %i.03, 1
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%exitcond.not = icmp eq i64 %inc, 10
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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}
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declare noundef i32 @printf(ptr nocapture noundef readonly, ...)
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