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