forked from OSchip/llvm-project
43 lines
1.2 KiB
LLVM
43 lines
1.2 KiB
LLVM
; RUN: opt %loadPolly -polly-detect-unprofitable -polly-detect -analyze < %s | FileCheck %s -check-prefix=PHI
|
|
|
|
; void f(long A[], long N) {
|
|
; long i;
|
|
; for (i = 0; i < N; ++i)
|
|
; A[i] = i;
|
|
; }
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
|
|
|
|
define void @f(i64* %A, i64 %N, i64 %p) nounwind {
|
|
entry:
|
|
fence seq_cst
|
|
br label %pre
|
|
|
|
pre:
|
|
%p_tmp = srem i64 %p, 5
|
|
br i1 true, label %for.i, label %then
|
|
|
|
for.i:
|
|
%indvar = phi i64 [ 0, %pre ], [ %indvar.next, %for.i ]
|
|
%indvar.p1 = phi i64 [ 0, %pre ], [ %indvar.p1.next, %for.i ]
|
|
%indvar.p2 = phi i64 [ 0, %pre ], [ %indvar.p2.next, %for.i ]
|
|
%sum = add i64 %indvar, %indvar.p1
|
|
%sum2 = sub i64 %sum, %indvar.p2
|
|
%scevgep = getelementptr i64, i64* %A, i64 %indvar
|
|
store i64 %indvar, i64* %scevgep
|
|
%indvar.next = add nsw i64 %indvar, 1
|
|
%indvar.p1.next = add nsw i64 %indvar.p1, %p_tmp
|
|
%indvar.p2.next = add nsw i64 %indvar.p2, %p_tmp
|
|
%exitcond = icmp eq i64 %sum2, %N
|
|
br i1 %exitcond, label %then, label %for.i
|
|
|
|
then:
|
|
br label %return
|
|
|
|
return:
|
|
fence seq_cst
|
|
ret void
|
|
}
|
|
|
|
; PHI: Valid Region for Scop: pre => return
|