unsigned-division-1.ll
1.33 KB
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; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; void f(int *A, unsigned N) {
; for (unsigned i = 0; i < N / 2; i++)
; A[i]++;
; }
;
; CHECK: Assumed Context:
; CHECK-NEXT: [N] -> { : }
; CHECK-NEXT: Invalid Context:
; CHECK-NEXT: [N] -> { : N < 0 }
;
; CHECK: Domain :=
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] : i0 >= 0 and 2i0 <= -2 + N };
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A, i32 %N) {
entry:
%tmp = lshr i32 %N, 1
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%lftr.wideiv = trunc i64 %indvars.iv to i32
%exitcond = icmp ne i32 %lftr.wideiv, %tmp
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp1 = load i32, i32* %arrayidx, align 4
%inc = add nsw i32 %tmp1, 1
store i32 %inc, i32* %arrayidx, 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
}