1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py 2; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s 3; PR4599 4 5target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" 6 7define i32 @foo(i32 %ecx) nounwind { 8; CHECK-LABEL: 'foo' 9; CHECK-NEXT: Determining loop execution counts for: @foo 10; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %ecx) 11; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i32 -2 12; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %ecx) 13; CHECK-NEXT: Loop %for.body: Trip multiple is 1 14; 15entry: 16 %cmp2 = icmp eq i32 %ecx, 0 ; <i1> [#uses=1] 17 br i1 %cmp2, label %for.end, label %bb.nph 18 19for.cond: ; preds = %for.inc 20 %cmp = icmp ult i32 %inc, %ecx ; <i1> [#uses=1] 21 br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge 22 23for.cond.for.end_crit_edge: ; preds = %for.cond 24 %phitmp = add i32 %i.01, 2 ; <i32> [#uses=1] 25 br label %for.end 26 27bb.nph: ; preds = %entry 28 br label %for.body 29 30for.body: ; preds = %bb.nph, %for.cond 31 %i.01 = phi i32 [ %inc, %for.cond ], [ 0, %bb.nph ] ; <i32> [#uses=3] 32 %call = call i32 @bar(i32 %i.01) nounwind ; <i32> [#uses=0] 33 br label %for.inc 34 35for.inc: ; preds = %for.body 36 %inc = add i32 %i.01, 1 ; <i32> [#uses=2] 37 br label %for.cond 38 39for.end: ; preds = %for.cond.for.end_crit_edge, %entry 40 %i.0.lcssa = phi i32 [ %phitmp, %for.cond.for.end_crit_edge ], [ 1, %entry ] ; <i32> [#uses=1] 41 ret i32 %i.0.lcssa 42} 43 44declare i32 @bar(i32) 45