non_affine_but_sdiv.ll
2.26 KB
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; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; CHECK: Statements {
; CHECK-NEXT: Stmt_for_body
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] : 0 <= i0 < N };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> [i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : -4 + N + 5i0 <= 5o0 <= N + 5i0 };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : -N + 5i0 <= 5o0 <= 4 - N + 5i0 };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[i0] };
; CHECK-NEXT: }
;
; void f(int *A, int N) {
; for (int i = 0; i < N; i++)
; A[i] = A[i + (N / 5)] + A[i + (N / -5)];
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A, i32 %N) {
entry:
%tmp = sext i32 %N to i64
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%cmp = icmp slt i64 %indvars.iv, %tmp
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%div = sdiv i32 %N, 5
%tmp1 = trunc i64 %indvars.iv to i32
%add = add nsw i32 %tmp1, %div
%idxprom = sext i32 %add to i64
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %idxprom
%tmp2 = load i32, i32* %arrayidx, align 4
%div1 = sdiv i32 %N, -5
%tmp3 = trunc i64 %indvars.iv to i32
%add2 = add nsw i32 %tmp3, %div1
%idxprom3 = sext i32 %add2 to i64
%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %idxprom3
%tmp4 = load i32, i32* %arrayidx4, align 4
%add5 = add nsw i32 %tmp2, %tmp4
%arrayidx7 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 %add5, i32* %arrayidx7, align 4
br label %for.inc
for.inc: ; preds = %for.body
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}