1; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s 2target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32" 3 4declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) #0 5declare void @llvm.assume(i1) #0 6 7define void @test1(ptr %P, ptr %Q) nounwind ssp { 8 tail call void @llvm.assume(i1 true) 9 tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 10 load i8, ptr %P 11 load i8, ptr %Q 12 ret void 13 14; CHECK-LABEL: Function: test1: 15 16; CHECK: MayAlias: i8* %P, i8* %Q 17; CHECK: NoModRef: Ptr: i8* %P <-> tail call void @llvm.assume(i1 true) 18; CHECK: NoModRef: Ptr: i8* %Q <-> tail call void @llvm.assume(i1 true) 19; CHECK: Both ModRef: Ptr: i8* %P <-> tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 20; CHECK: Both ModRef: Ptr: i8* %Q <-> tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 21; CHECK: NoModRef: tail call void @llvm.assume(i1 true) <-> tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 22; CHECK: NoModRef: tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) <-> tail call void @llvm.assume(i1 true) 23} 24 25; Same but with operand bundles 26define void @test2(ptr %P, ptr %Q) nounwind ssp { 27 tail call void @llvm.assume(i1 true) [ "nonnull"(ptr %P) ] 28 tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 29 load i8, ptr %P 30 load i8, ptr %Q 31 ret void 32 33; CHECK-LABEL: Function: test2: 34 35; CHECK: MayAlias: i8* %P, i8* %Q 36; CHECK: NoModRef: Ptr: i8* %P <-> tail call void @llvm.assume(i1 true) [ "nonnull"(ptr %P) ] 37; CHECK: NoModRef: Ptr: i8* %Q <-> tail call void @llvm.assume(i1 true) [ "nonnull"(ptr %P) ] 38; CHECK: Both ModRef: Ptr: i8* %P <-> tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 39; CHECK: Both ModRef: Ptr: i8* %Q <-> tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 40; CHECK: NoModRef: tail call void @llvm.assume(i1 true) [ "nonnull"(ptr %P) ] <-> tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) 41; CHECK: NoModRef: tail call void @llvm.memcpy.p0.p0.i64(ptr %P, ptr %Q, i64 12, i1 false) <-> tail call void @llvm.assume(i1 true) [ "nonnull"(ptr %P) ] 42} 43 44attributes #0 = { nounwind } 45