1; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s -o - -S | FileCheck %s 2; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s -o - -S 2>&1 | FileCheck %s 3 4target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 5target triple = "x86_64-apple-macosx10.9.0" 6 7; Test that SCEV is capable of figuring out value of 'IV' that actually does not change. 8; CHECK: Classifying expressions for: @foo 9; CHECK: %iv.i = phi i64 10; CHECK: -5 U: [-5,-4) S: [-5,-4) Exits: -5 LoopDispositions: { %loop: Invariant } 11define void @foo() { 12entry: 13 br label %loop 14 15loop: 16 %iv.i = phi i64 [ -5, %entry ], [ %iv.next.i, %loop ] 17 %iv.next.i = add nsw i64 %iv.i, 0 18 br label %loop 19} 20