1 ; RUN: opt %loadPolly -polly-allow-modref-calls -polly-print-scops -disable-output < %s | FileCheck %s
2 ; RUN: opt %loadPolly -polly-allow-modref-calls -S -polly-codegen < %s
4 ; Verify we can handle a memset to "null" and that we do not model it.
5 ; TODO: FIXME: We could use the undefined memset to optimize the code further,
6 ; see the TODOs in the ScopInfo.cpp.
9 ; CHECK-NEXT: Stmt_for_cond5_preheader_us221
10 ; CHECK-NEXT: Domain :=
11 ; CHECK-NEXT: { Stmt_for_cond5_preheader_us221[0] };
12 ; CHECK-NEXT: Schedule :=
13 ; CHECK-NEXT: { Stmt_for_cond5_preheader_us221[i0] -> [0] };
14 ; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
15 ; CHECK-NEXT: { Stmt_for_cond5_preheader_us221[i0] -> MemRef_A[0] };
19 target datalayout = "e-m:e-i64:64-i128:128-n8:16:32:64-S128"
21 define void @test(ptr %A) {
23 br i1 undef, label %for.end68, label %for.cond5.preheader.lr.ph
25 for.cond5.preheader.lr.ph: ; preds = %entry
26 br label %for.cond5.preheader.us221
28 for.cond5.preheader.us221: ; preds = %for.cond5.preheader.us221, %for.cond5.preheader.lr.ph
30 call void @llvm.memset.p0.i64(ptr null, i8 0, i64 undef, i32 1, i1 false)
31 br i1 true, label %for.end68, label %for.cond5.preheader.us221
33 for.end68: ; preds = %for.cond5.preheader.us221, %entry
37 declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i32, i1)