xref: /aosp_15_r20/external/llvm/test/Analysis/ScalarEvolution/2010-09-03-RequiredTransitive.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -indvars -scalar-evolution -analyze < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; This test checks if the SCEV analysis is printed out at all.
3*9880d681SAndroid Build Coastguard Worker; It failed once as the RequiredTransitive option was not implemented
4*9880d681SAndroid Build Coastguard Worker; correctly.
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Worker; CHECK: Classifying expressions for: @main
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Workerdefine i32 @main() nounwind {
9*9880d681SAndroid Build Coastguard Workerentry:
10*9880d681SAndroid Build Coastguard Worker  br label %for.cond
11*9880d681SAndroid Build Coastguard Worker
12*9880d681SAndroid Build Coastguard Workerfor.cond:                                         ; preds = %for.inc, %entry
13*9880d681SAndroid Build Coastguard Worker  %indvar1 = phi i64 [ %indvar.next2, %for.inc ], [ 0, %entry ] ; <i64> [#uses=3]
14*9880d681SAndroid Build Coastguard Worker  %exitcond = icmp ne i64 %indvar1, 1024          ; <i1> [#uses=1]
15*9880d681SAndroid Build Coastguard Worker  br i1 %exitcond, label %for.body, label %for.end
16*9880d681SAndroid Build Coastguard Worker
17*9880d681SAndroid Build Coastguard Workerfor.body:                                         ; preds = %for.cond
18*9880d681SAndroid Build Coastguard Worker  br label %for.inc
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard Workerfor.inc:                                          ; preds = %for.body
21*9880d681SAndroid Build Coastguard Worker  %indvar.next2 = add i64 %indvar1, 1             ; <i64> [#uses=1]
22*9880d681SAndroid Build Coastguard Worker  br label %for.cond
23*9880d681SAndroid Build Coastguard Worker
24*9880d681SAndroid Build Coastguard Workerfor.end:                                          ; preds = %for.cond
25*9880d681SAndroid Build Coastguard Worker  ret i32 0
26*9880d681SAndroid Build Coastguard Worker}
27