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 4@G1 = external global i32 5 6declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) 7declare void @llvm.memmove.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) 8declare void @llvm.experimental.deoptimize.void(...) 9declare void @unknown_but_readonly() readonly 10 11define void @test1(ptr %p) { 12 load i8, ptr %p 13 call void(...) @llvm.experimental.deoptimize.void() [ "deopt"() ] 14 ret void 15 16; CHECK-LABEL: Function: test1: 17; CHECK: Just Ref: Ptr: i8* %p <-> call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ] 18} 19 20; By specification calls with deopt bundles reads through all operands and entire heap. 21; Check that global G1 is reported as Ref by memcpy/memmove calls. 22define i32 @test_memcpy_with_deopt() { 23; CHECK-LABEL: Function: test_memcpy_with_deopt: 24; CHECK: Both ModRef: Ptr: i8* %A <-> call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 25; CHECK: Just Ref: Ptr: i8* %B <-> call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 26; CHECK: Just Ref: Ptr: i32* @G1 <-> call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 27 28 %A = alloca i8 29 %B = alloca i8 30 load i8, ptr %A 31 load i8, ptr %B 32 33 store i32 2, ptr @G1 ;; Not referenced by semantics of memcpy but still may be read due to "deopt" 34 35 call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 36 37 %C = load i32, ptr @G1 38 ret i32 %C 39} 40 41define i32 @test_memmove_with_deopt() { 42; CHECK-LABEL: Function: test_memmove_with_deopt: 43; CHECK: Both ModRef: Ptr: i8* %A <-> call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 44; CHECK: Just Ref: Ptr: i8* %B <-> call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 45; CHECK: Just Ref: Ptr: i32* @G1 <-> call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 46 47 %A = alloca i8 48 %B = alloca i8 49 load i8, ptr %A 50 load i8, ptr %B 51 52 store i32 2, ptr @G1 ;; Not referenced by semantics of memcpy but still may be read due to "deopt" 53 54 call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ] 55 56 %C = load i32, ptr @G1 57 ret i32 %C 58} 59