no-scalar-deps-in-non-affine-subregion.ll
1.98 KB
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; RUN: opt %loadPolly -polly-scops \
; RUN: -analyze < %s | FileCheck %s
;
; Check that we do not generate any scalar dependences regarding x. It is
; defined and used on the non-affine subregion only, thus we do not need
; to represent the definition and uses in the model.
;
; CHECK: Stmt_bb2__TO__bb11
; CHECK-NOT: [Scalar: 1]
; CHECK-NOT: MemRef_x
;
; void f(int *A) {
; int x;
; for (int i = 0; i < 1024; i++) {
; if (A[i]) {
; if (i > 512)
; x = 1;
; else
; x = 2;
; A[i] = x;
; }
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A) {
bb:
br label %bb1
bb1: ; preds = %bb12, %bb
%indvars.iv = phi i64 [ %indvars.iv.next, %bb12 ], [ 0, %bb ]
%exitcond = icmp ne i64 %indvars.iv, 1024
br i1 %exitcond, label %bb2, label %bb13
bb2: ; preds = %bb1
%tmp = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp3 = load i32, i32* %tmp, align 4
%tmp4 = icmp eq i32 %tmp3, 0
br i1 %tmp4, label %bb11, label %bb5
bb5: ; preds = %bb2
%tmp6 = icmp sgt i64 %indvars.iv, 512
br i1 %tmp6, label %bb7, label %bb8
bb7: ; preds = %bb5
br label %bb9
bb8: ; preds = %bb5
br label %bb9
bb9: ; preds = %bb8, %bb7
%x.0 = phi i32 [ 1, %bb7 ], [ 2, %bb8 ]
%tmp10 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 %x.0, i32* %tmp10, align 4
br label %bb11
bb11: ; preds = %bb2, %bb9
br label %bb12
bb12: ; preds = %bb11
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %bb1
bb13: ; preds = %bb1
ret void
}