forked from OSchip/llvm-project
120 lines
4.5 KiB
LLVM
120 lines
4.5 KiB
LLVM
; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
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target triple = "i386-unknown-linux-gnu"
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declare i32* @random.i32(i32* %ptr)
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; CHECK-LABEL: Function: arr:
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; CHECK-DAG: MayAlias: i32* %alloca, i32* %p0
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; CHECK-DAG: NoAlias: i32* %alloca, i32* %p1
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define void @arr() {
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%alloca = alloca i32, i32 4
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%random = call i32* @random.i32(i32* %alloca)
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%p0 = getelementptr inbounds i32, i32* %random, i32 0
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%p1 = getelementptr inbounds i32, i32* %random, i32 1
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ret void
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}
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; CHECK-LABEL: Function: arg:
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; CHECK-DAG: MayAlias: i32* %arg, i32* %p0
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; CHECK-DAG: MayAlias: i32* %arg, i32* %p1
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define void @arg(i32* %arg) {
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%random = call i32* @random.i32(i32* %arg)
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%p0 = getelementptr inbounds i32, i32* %random, i32 0
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%p1 = getelementptr inbounds i32, i32* %random, i32 1
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ret void
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}
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@gv = global i32 1
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; CHECK-LABEL: Function: global:
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; CHECK-DAG: MayAlias: i32* %p0, i32* @gv
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; CHECK-DAG: NoAlias: i32* %p1, i32* @gv
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define void @global() {
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%random = call i32* @random.i32(i32* @gv)
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%p0 = getelementptr inbounds i32, i32* %random, i32 0
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%p1 = getelementptr inbounds i32, i32* %random, i32 1
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ret void
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}
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; CHECK-LABEL: Function: struct:
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; CHECK-DAG: MayAlias: i32* %f0, i32* %p0
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; CHECK-DAG: MayAlias: i32* %f1, i32* %p0
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; CHECK-DAG: NoAlias: i32* %f0, i32* %p1
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; CHECK-DAG: MayAlias: i32* %f1, i32* %p1
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%struct = type { i32, i32, i32 }
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define void @struct() {
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%alloca = alloca %struct
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%alloca.i32 = bitcast %struct* %alloca to i32*
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%random = call i32* @random.i32(i32* %alloca.i32)
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%f0 = getelementptr inbounds %struct, %struct* %alloca, i32 0, i32 0
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%f1 = getelementptr inbounds %struct, %struct* %alloca, i32 0, i32 1
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%p0 = getelementptr inbounds i32, i32* %random, i32 0
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%p1 = getelementptr inbounds i32, i32* %random, i32 1
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ret void
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}
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; CHECK-LABEL: Function: complex1:
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; CHECK-DAG: MayAlias: i32* %a2.0, i32* %r2.0
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; CHECK-DAG: NoAlias: i32* %a2.0, i32* %r2.1
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; CHECK-DAG: MayAlias: i32* %a2.0, i32* %r2.i
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; CHECK-DAG: MayAlias: i32* %a2.0, i32* %r2.1i
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; CHECK-DAG: NoAlias: i32* %a1, i32* %r2.0
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; CHECK-DAG: NoAlias: i32* %a1, i32* %r2.1
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; CHECK-DAG: MayAlias: i32* %a1, i32* %r2.i
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; CHECK-DAG: MayAlias: i32* %a1, i32* %r2.1i
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%complex = type { i32, i32, [4 x i32] }
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define void @complex1(i32 %i) {
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%alloca = alloca %complex
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%alloca.i32 = bitcast %complex* %alloca to i32*
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%r.i32 = call i32* @random.i32(i32* %alloca.i32)
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%random = bitcast i32* %r.i32 to %complex*
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%a1 = getelementptr inbounds %complex, %complex* %alloca, i32 0, i32 1
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%a2.0 = getelementptr inbounds %complex, %complex* %alloca, i32 0, i32 2, i32 0
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%r2.0 = getelementptr inbounds %complex, %complex* %random, i32 0, i32 2, i32 0
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%r2.1 = getelementptr inbounds %complex, %complex* %random, i32 0, i32 2, i32 1
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%r2.i = getelementptr inbounds %complex, %complex* %random, i32 0, i32 2, i32 %i
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%r2.1i = getelementptr inbounds i32, i32* %r2.1, i32 %i
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ret void
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}
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; CHECK-LABEL: Function: complex2:
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; CHECK-DAG: NoAlias: i32* %alloca, i32* %p120
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; CHECK-DAG: MayAlias: i32* %alloca, i32* %pi20
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; CHECK-DAG: MayAlias: i32* %alloca, i32* %pij1
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; CHECK-DAG: MayAlias: i32* %a3, i32* %pij1
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%inner = type { i32, i32 }
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%outer = type { i32, i32, [10 x %inner] }
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declare %outer* @rand_outer(i32* %p)
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define void @complex2(i32 %i, i32 %j) {
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%alloca = alloca i32, i32 128
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%a3 = getelementptr inbounds i32, i32* %alloca, i32 3
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%random = call %outer* @rand_outer(i32* %alloca)
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%p120 = getelementptr inbounds %outer, %outer* %random, i32 1, i32 2, i32 2, i32 0
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%pi20 = getelementptr inbounds %outer, %outer* %random, i32 %i, i32 2, i32 2, i32 0
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%pij1 = getelementptr inbounds %outer, %outer* %random, i32 %i, i32 2, i32 %j, i32 1
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ret void
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}
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; CHECK-LABEL: Function: pointer_offset:
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; CHECK-DAG: MayAlias: i32** %add.ptr, i32** %p1
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; CHECK-DAG: MayAlias: i32** %add.ptr, i32** %q2
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%struct.X = type { i32*, i32* }
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define i32 @pointer_offset(i32 signext %i, i32 signext %j, i32 zeroext %off) {
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entry:
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%i.addr = alloca i32
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%j.addr = alloca i32
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%x = alloca %struct.X
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store i32 %i, i32* %i.addr
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store i32 %j, i32* %j.addr
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%0 = bitcast %struct.X* %x to i8*
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%p1 = getelementptr inbounds %struct.X, %struct.X* %x, i32 0, i32 0
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store i32* %i.addr, i32** %p1
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%q2 = getelementptr inbounds %struct.X, %struct.X* %x, i32 0, i32 1
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store i32* %j.addr, i32** %q2
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%add.ptr = getelementptr inbounds i32*, i32** %q2, i32 %off
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%1 = load i32*, i32** %add.ptr
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%2 = load i32, i32* %1
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ret i32 %2
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}
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