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TheRock/compiler/amd-llvm/llvm/test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

31 lines
1.0 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
; PR2364
define i32 @func_6() nounwind {
; CHECK-LABEL: 'func_6'
; CHECK-NEXT: Determining loop execution counts for: @func_6
; CHECK-NEXT: Loop %bb5: backedge-taken count is i8 61
; CHECK-NEXT: Loop %bb5: constant max backedge-taken count is i8 61
; CHECK-NEXT: Loop %bb5: symbolic max backedge-taken count is i8 61
; CHECK-NEXT: Loop %bb5: Trip multiple is 62
;
entry:
br label %bb5
bb: ; preds = %bb5
%tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1]
%tmp4 = add i8 %x.0, -4 ; <i8> [#uses=1]
br label %bb5
bb5: ; preds = %bb, %entry
%x.0 = phi i8 [ 0, %entry ], [ %tmp4, %bb ] ; <i8> [#uses=2]
%i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=2]
%tmp7 = icmp eq i8 %x.0, 12 ; <i1> [#uses=1]
br i1 %tmp7, label %return, label %bb
return: ; preds = %bb5
ret i32 %i.0
}