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; RUN: opt "-passes=print<scalar-evolution>,loop(loop-deletion),simplifycfg" -disable-output < %s 2>&1 | FileCheck %s --check-prefix=CHECK-ANALYSIS-1
; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s --check-prefix=CHECK-ANALYSIS-2
define i32 @pr34538() local_unnamed_addr #0 {
; CHECK-ANALYSIS-1: Loop %do.body: backedge-taken count is 10000
; CHECK-ANALYSIS-1: Loop %do.body: max backedge-taken count is 10000
; CHECK-ANALYSIS-1: Loop %do.body: Predicated backedge-taken count is 10000
entry:
br label %do.body
do.body: ; preds = %do.body, %entry
%start.0 = phi i32 [ 0, %entry ], [ %inc.start.0, %do.body ]
%cmp = icmp slt i32 %start.0, 10000
%inc = zext i1 %cmp to i32
%inc.start.0 = add nsw i32 %start.0, %inc
br i1 %cmp, label %do.body, label %do.end
do.end: ; preds = %do.body
ret i32 0
}
define i32 @foo() {
entry:
br label %do.body
do.body: ; preds = %do.body, %entry
%start.0 = phi i32 [ 0, %entry ], [ %inc.start.0, %do.body ]
%cmp = icmp slt i32 %start.0, 10000
%select_ext = select i1 %cmp, i32 2 , i32 1
%inc.start.0 = add nsw i32 %start.0, %select_ext
br i1 %cmp, label %do.body, label %do.end
do.end: ; preds = %do.body
ret i32 0
; CHECK-ANALYSIS-2: Loop %do.body: backedge-taken count is 5000
; CHECK-ANALYSIS-2: Loop %do.body: max backedge-taken count is 5000
; CHECK-ANALYSIS-2: Loop %do.body: Predicated backedge-taken count is 5000
}
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