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; RUN: opt %loadPolly -basicaa -polly-scops -analyze -polly-allow-modref-calls \
; RUN: < %s | FileCheck %s
; RUN: opt %loadPolly -basicaa -polly-codegen -disable-output \
; RUN: -polly-allow-modref-calls < %s
;
; Verify that we model the read access of the gcread intrinsic
; correctly, thus that A is read by it but B is not.
;
; CHECK: Stmt_for_body
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_for_body[i0] : 0 <= i0 <= 1023 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_for_body[i0] -> [i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE]
; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[o0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE]
; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_dummyloc[0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE]
; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_B[i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE]
; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[i0] };
;
; void jd(int *restirct A, int *restrict B) {
; char **dummyloc;
; for (int i = 0; i < 1024; i++) {
; char *dummy = @llvm.gcread(A, nullptr);
; *dummyloc = dummy;
; A[i] = B[i];
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @jd(i32* noalias %A, i32* noalias %B) gc "dummy" {
entry:
%dummyloc = alloca i8*
br label %entry.split
entry.split:
br label %for.cond
for.cond: ; preds = %for.inc, %entry.split
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry.split ]
%exitcond = icmp ne i64 %indvars.iv, 1024
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
%bc = bitcast i32* %arrayidx to i8*
%dummy = call i8* @f(i8* %bc, i8** null)
store i8* %dummy, i8** %dummyloc, align 4
%tmp = load i32, i32* %arrayidx2
store i32 %tmp, 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
}
declare i8* @f(i8*, i8**) #0
attributes #0 = { argmemonly readonly nounwind }
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