blob: 6ffd14835243eb4fafb712cfbb971c7eb3be26d5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
; LFTR should eliminate the need for the computation of i*i completely. It
; is only used to compute the exit value.
; RUN: llvm-as < %s | opt -indvars -dce | llvm-dis | not grep mul
%A = external global int
implementation
int %quadratic_setlt() { ;; for (i = 7; i*i < 1000; ++i)
entry:
br label %loop
loop:
%i = phi int [ 7, %entry ], [ %i.next, %loop ]
%i.next = add int %i, 1
store int %i, int* %A
%i2 = mul int %i, %i
%c = setlt int %i2, 1000
br bool %c, label %loop, label %loopexit
loopexit:
ret int %i
}
|