llvm-project/llvm/test/Analysis/ScalarEvolution/2008-11-02-QuadraticCrash.ll

22 lines
542 B
LLVM

; RUN: llvm-as < %s | opt -analyze -scalar-evolution -disable-output
; PR1827
declare void @use(i32)
define void @foo() {
entry:
br label %loop_1
loop_1: ; preds = %loop_1, %entry
%a = phi i32 [ 2, %entry ], [ %b, %loop_1 ] ; <i32> [#uses=2]
%c = phi i32 [ 5, %entry ], [ %d, %loop_1 ] ; <i32> [#uses=1]
%b = add i32 %a, 1 ; <i32> [#uses=1]
%d = add i32 %c, %a ; <i32> [#uses=3]
%A = icmp ult i32 %d, 50 ; <i1> [#uses=1]
br i1 %A, label %loop_1, label %endloop
endloop: ; preds = %loop_1
call void @use(i32 %d)
ret void
}