59 lines
2.4 KiB
LLVM
59 lines
2.4 KiB
LLVM
; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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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"
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@G1 = external global i32
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
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declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
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declare void @llvm.experimental.deoptimize.void(...)
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declare void @unknown_but_readonly() readonly
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define void @test1(i8* %p) {
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load i8, i8* %p
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call void(...) @llvm.experimental.deoptimize.void() [ "deopt"() ]
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ret void
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; CHECK-LABEL: Function: test1:
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; CHECK: Just Ref: Ptr: i8* %p <-> call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
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}
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; By specification calls with deopt bundles reads through all operands and entire heap.
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; Check that global G1 is reported as Ref by memcpy/memmove calls.
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define i32 @test_memcpy_with_deopt() {
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; CHECK-LABEL: Function: test_memcpy_with_deopt:
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; CHECK: Both ModRef: Ptr: i8* %A <-> call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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; CHECK: Just Ref: Ptr: i8* %B <-> call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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; CHECK: Just Ref: Ptr: i32* @G1 <-> call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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%A = alloca i8
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%B = alloca i8
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load i8, i8* %A
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load i8, i8* %B
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store i32 2, i32* @G1 ;; Not referenced by semantics of memcpy but still may be read due to "deopt"
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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%C = load i32, i32* @G1
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ret i32 %C
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}
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define i32 @test_memmove_with_deopt() {
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; CHECK-LABEL: Function: test_memmove_with_deopt:
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; CHECK: Both ModRef: Ptr: i8* %A <-> call void @llvm.memmove.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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; CHECK: Just Ref: Ptr: i8* %B <-> call void @llvm.memmove.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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; CHECK: Just Ref: Ptr: i32* @G1 <-> call void @llvm.memmove.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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%A = alloca i8
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%B = alloca i8
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load i8, i8* %A
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load i8, i8* %B
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store i32 2, i32* @G1 ;; Not referenced by semantics of memcpy but still may be read due to "deopt"
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %A, i8* %B, i64 -1, i1 false) [ "deopt"() ]
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%C = load i32, i32* @G1
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ret i32 %C
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}
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