xref: /aosp_15_r20/external/llvm/test/Analysis/ScalarEvolution/2008-11-02-QuadraticCrash.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -analyze -scalar-evolution
2*9880d681SAndroid Build Coastguard Worker; PR1827
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdeclare void @use(i32)
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine void @foo() {
7*9880d681SAndroid Build Coastguard Workerentry:
8*9880d681SAndroid Build Coastguard Worker	br label %loop_1
9*9880d681SAndroid Build Coastguard Worker
10*9880d681SAndroid Build Coastguard Workerloop_1:		; preds = %loop_1, %entry
11*9880d681SAndroid Build Coastguard Worker	%a = phi i32 [ 2, %entry ], [ %b, %loop_1 ]		; <i32> [#uses=2]
12*9880d681SAndroid Build Coastguard Worker	%c = phi i32 [ 5, %entry ], [ %d, %loop_1 ]		; <i32> [#uses=1]
13*9880d681SAndroid Build Coastguard Worker	%b = add i32 %a, 1		; <i32> [#uses=1]
14*9880d681SAndroid Build Coastguard Worker	%d = add i32 %c, %a		; <i32> [#uses=3]
15*9880d681SAndroid Build Coastguard Worker	%A = icmp ult i32 %d, 50		; <i1> [#uses=1]
16*9880d681SAndroid Build Coastguard Worker	br i1 %A, label %loop_1, label %endloop
17*9880d681SAndroid Build Coastguard Worker
18*9880d681SAndroid Build Coastguard Workerendloop:		; preds = %loop_1
19*9880d681SAndroid Build Coastguard Worker	call void @use(i32 %d)
20*9880d681SAndroid Build Coastguard Worker	ret void
21*9880d681SAndroid Build Coastguard Worker}
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