blob: 9b0c3a6aba66d57a8f13efff5b7d8a20a8ccb0b5 [file] [log] [blame]
; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution -scalar-evolution < %s | FileCheck %s
; RUN: opt -disable-output "-passes=print<scalar-evolution>,print<scalar-evolution>" < %s 2>&1 | FileCheck %s
define void @bad.nsw() {
; CHECK-LABEL: Classifying expressions for: @bad.nsw
; CHECK-LABEL: Classifying expressions for: @bad.nsw
entry:
br label %loop
loop:
%i = phi i8 [ -1, %entry ], [ %i.inc, %loop ]
; CHECK: %i = phi i8 [ -1, %entry ], [ %i.inc, %loop ]
; CHECK-NEXT: --> {-1,+,-128}<nw><%loop>
; CHECK-NOT: --> {-1,+,-128}<nsw><%loop>
%counter = phi i8 [ 0, %entry ], [ %counter.inc, %loop ]
%i.inc = add i8 %i, -128
%i.sext = sext i8 %i to i16
%counter.inc = add i8 %counter, 1
%continue = icmp eq i8 %counter, 1
br i1 %continue, label %exit, label %loop
exit:
ret void
}