derek.holloway
7502bf64a4
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40 lines
1.4 KiB
LLVM
40 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -passes="print<scalar-evolution>" -disable-output \
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; RUN: -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
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; PR1597
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define i32 @f(i32 %x, i32 %y) {
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; CHECK-LABEL: 'f'
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; CHECK-NEXT: Determining loop execution counts for: @f
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; CHECK-NEXT: Loop %bb: backedge-taken count is (-1 + (-1 * %x) + %y)
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; CHECK-NEXT: Loop %bb: constant max backedge-taken count is i32 -1
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; CHECK-NEXT: Loop %bb: symbolic max backedge-taken count is (-1 + (-1 * %x) + %y)
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; CHECK-NEXT: Loop %bb: Trip multiple is 1
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;
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entry:
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%tmp63 = icmp ult i32 %x, %y ; <i1> [#uses=1]
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br i1 %tmp63, label %bb.preheader, label %bb8
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bb.preheader: ; preds = %entry
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br label %bb
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bb: ; preds = %bb3, %bb.preheader
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%x_addr.0 = phi i32 [ %tmp2, %bb3 ], [ %x, %bb.preheader ] ; <i32> [#uses=1]
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%tmp2 = add i32 %x_addr.0, 1 ; <i32> [#uses=3]
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br label %bb3
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bb3: ; preds = %bb
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%tmp6 = icmp ult i32 %tmp2, %y ; <i1> [#uses=1]
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br i1 %tmp6, label %bb, label %bb8.loopexit
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bb8.loopexit: ; preds = %bb3
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br label %bb8
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bb8: ; preds = %bb8.loopexit, %entry
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%x_addr.1 = phi i32 [ %x, %entry ], [ %tmp2, %bb8.loopexit ] ; <i32> [#uses=1]
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br label %return
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return: ; preds = %bb8
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ret i32 %x_addr.1
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}
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