read-only-statements.ll
2.34 KB
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; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; Check we remove read only statements.
;
; CHECK: Statements {
; CHECK-NEXT: Stmt_for_body_2
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_for_body_2[i0] : 0 <= i0 <= 99 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_for_body_2[i0] -> [i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: +] [Scalar: 0]
; CHECK-NEXT: { Stmt_for_body_2[i0] -> MemRef_A[i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
; CHECK-NEXT: { Stmt_for_body_2[i0] -> MemRef_A[i0] };
; CHECK-NEXT: }
;
; int g(int);
; void f(int *A) {
; for (int i = 0; i < 100; i++) {
; (A[i]);
; /* Split BB */
; (A[i]);
; /* Split BB */
; A[i] += 1;
; /* Split BB */
; (A[i]);
; /* Split BB */
; (A[i]);
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A) {
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, 100
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp = load i32, i32* %arrayidx, align 4
br label %for.body.1
for.body.1:
%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp1 = load i32, i32* %arrayidx2, align 4
br label %for.body.2
for.body.2:
%arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp2 = load i32, i32* %arrayidx5, align 4
%add = add nsw i32 %tmp2, 1
store i32 %add, i32* %arrayidx5, align 4
br label %for.body.3
for.body.3:
%arrayidx7 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp3 = load i32, i32* %arrayidx7, align 4
br label %for.body.4
for.body.4:
%arrayidx10 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp4 = load i32, i32* %arrayidx10, 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
}