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; RUN: opt %loadPolly -polly-codegen-isl -S -verify-dom-info < %s | FileCheck %s
;
; Check that we do not reuse the B[i-1] GEP created in block S again in
; block Q. Hence, we create two GEPs for B[i-1]:
;
; CHECK: %scevgep{{.}} = getelementptr i32* %B, i64 -1
; CHECK: %scevgep{{.}} = getelementptr i32* %B, i64 -1
;
; void f(int *A, int *B) {
; int x = 0;
; for (int i = 0; i < 1024; i++) {
; if (A[i]) {
; if (i > 512)
; S: A[i] = B[i - 1];
; Q: A[i] += B[i - 1];
; }
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A, i32* %B) {
bb:
br label %bb1
bb1: ; preds = %bb22, %bb
%indvars.iv = phi i64 [ %indvars.iv.next, %bb22 ], [ 0, %bb ]
%exitcond = icmp ne i64 %indvars.iv, 1024
br i1 %exitcond, label %bb2, label %bb23
bb2: ; preds = %bb1
%tmp = getelementptr inbounds i32* %A, i64 %indvars.iv
%tmp3 = load i32* %tmp, align 4
%tmp4 = icmp eq i32 %tmp3, 0
br i1 %tmp4, label %bb21, label %bb5
bb5: ; preds = %bb2
%tmp6 = icmp sgt i64 %indvars.iv, 512
br i1 %tmp6, label %bb7, label %bb13
bb7: ; preds = %bb5
br label %bb8
bb8: ; preds = %bb7
%tmp9 = add nsw i64 %indvars.iv, -1
%tmp10 = getelementptr inbounds i32* %B, i64 %tmp9
%tmp11 = load i32* %tmp10, align 4
%tmp12 = getelementptr inbounds i32* %A, i64 %indvars.iv
store i32 %tmp11, i32* %tmp12, align 4
br label %bb13
bb13: ; preds = %bb8, %bb5
br label %bb14
bb14: ; preds = %bb13
%tmp15 = add nsw i64 %indvars.iv, -1
%tmp16 = getelementptr inbounds i32* %B, i64 %tmp15
%tmp17 = load i32* %tmp16, align 4
%tmp18 = getelementptr inbounds i32* %A, i64 %indvars.iv
%tmp19 = load i32* %tmp18, align 4
%tmp20 = add nsw i32 %tmp19, %tmp17
store i32 %tmp20, i32* %tmp18, align 4
br label %bb21
bb21: ; preds = %bb2, %bb14
br label %bb22
bb22: ; preds = %bb21
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %bb1
bb23: ; preds = %bb1
ret void
}
|
