; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
target 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"
@G1 = external global i32
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1)
declare void @llvm.memmove.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1)
declare void @llvm.experimental.deoptimize.void(...)
declare void @unknown_but_readonly() readonly
define void @test1(ptr %p) {
load i8, ptr %p
call void(...) @llvm.experimental.deoptimize.void() [ "deopt"() ]
ret void
; CHECK-LABEL: Function: test1:
; CHECK: Just Ref: Ptr: i8* %p <-> call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
}
; By specification calls with deopt bundles reads through all operands and entire heap.
; Check that global G1 is reported as Ref by memcpy/memmove calls.
define i32 @test_memcpy_with_deopt() {
; CHECK-LABEL: Function: test_memcpy_with_deopt:
; CHECK: Both ModRef: Ptr: i8* %A <-> call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
; CHECK: Just Ref: Ptr: i8* %B <-> call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
; CHECK: Just Ref: Ptr: i32* @G1 <-> call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
%A = alloca i8
%B = alloca i8
load i8, ptr %A
load i8, ptr %B
store i32 2, ptr @G1 ;; Not referenced by semantics of memcpy but still may be read due to "deopt"
call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
%C = load i32, ptr @G1
ret i32 %C
}
define i32 @test_memmove_with_deopt() {
; CHECK-LABEL: Function: test_memmove_with_deopt:
; CHECK: Both ModRef: Ptr: i8* %A <-> call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
; CHECK: Just Ref: Ptr: i8* %B <-> call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
; CHECK: Just Ref: Ptr: i32* @G1 <-> call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
%A = alloca i8
%B = alloca i8
load i8, ptr %A
load i8, ptr %B
store i32 2, ptr @G1 ;; Not referenced by semantics of memcpy but still may be read due to "deopt"
call void @llvm.memmove.p0.p0.i64(ptr %A, ptr %B, i64 -1, i1 false) [ "deopt"() ]
%C = load i32, ptr @G1
ret i32 %C
}
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