aliasing_conditional_alias_groups_1.ll
1.86 KB
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; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; Check that there is no alias group because we either access A or B never both.
;
; CHECK: Alias Groups (0):
;
; void jd(int b, int *A, int *B) {
; for (int i = 0; i < 1024; i++) {
; if (b)
; A[i] = A[i - 1];
; else
; B[i] = B[i - 1];
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @jd(i32 %b, i32* %A, i32* %B) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%exitcond = icmp ne i64 %indvars.iv, 1024
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%tobool = icmp eq i32 %b, 0
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %for.body
%tmp = add nsw i64 %indvars.iv, -1
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %tmp
%tmp3 = load i32, i32* %arrayidx, align 4
%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 %tmp3, i32* %arrayidx2, align 4
br label %if.end
if.else: ; preds = %for.body
%tmp4 = add nsw i64 %indvars.iv, -1
%arrayidx5 = getelementptr inbounds i32, i32* %B, i64 %tmp4
%tmp5 = load i32, i32* %arrayidx5, align 4
%arrayidx7 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
store i32 %tmp5, i32* %arrayidx7, align 4
br label %if.end
if.end: ; preds = %if.else, %if.then
br label %for.inc
for.inc: ; preds = %if.end
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}