trip-count2.ll
1.32 KB
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; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
; RUN: opt < %s -analyze -scalar-evolution -scalar-evolution-classify-expressions=0 | FileCheck %s
@A = weak global [1000 x i32] zeroinitializer, align 32
define void @PR1101(i32 %N) {
; CHECK-LABEL: 'PR1101'
; CHECK-NEXT: Determining loop execution counts for: @PR1101
; CHECK-NEXT: Loop %bb3: backedge-taken count is 4
; CHECK-NEXT: Loop %bb3: max backedge-taken count is 4
; CHECK-NEXT: Loop %bb3: Predicated backedge-taken count is 4
; CHECK-NEXT: Predicates:
; CHECK: Loop %bb3: Trip multiple is 5
;
entry:
br label %bb3
bb: ; preds = %bb3
%tmp = getelementptr [1000 x i32], [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1]
store i32 123, i32* %tmp
%tmp4 = mul i32 %i.0, 4 ; <i32> [#uses=1]
%tmp5 = or i32 %tmp4, 1
%tmp61 = xor i32 %tmp5, -2147483648
%tmp6 = trunc i32 %tmp61 to i16
%tmp71 = shl i16 %tmp6, 2
%tmp7 = zext i16 %tmp71 to i32
%tmp2 = add i32 %tmp7, %i.0
br label %bb3
bb3: ; preds = %bb, %entry
%i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3]
%tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1]
br i1 %tmp3, label %bb, label %bb5
bb5: ; preds = %bb3
br label %return
return: ; preds = %bb5
ret void
}