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|
; RUN: opt < %s -basic-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK-LABEL: test_with_zext
; CHECK: NoAlias: i8* %a, i8* %b
define void @test_with_zext() {
%1 = tail call i8* @malloc(i64 120)
%a = getelementptr inbounds i8, i8* %1, i64 8
%2 = getelementptr inbounds i8, i8* %1, i64 16
%3 = zext i32 3 to i64
%b = getelementptr inbounds i8, i8* %2, i64 %3
ret void
}
; CHECK-LABEL: test_with_lshr
; CHECK: NoAlias: i8* %a, i8* %b
define void @test_with_lshr(i64 %i) {
%1 = tail call i8* @malloc(i64 120)
%a = getelementptr inbounds i8, i8* %1, i64 8
%2 = getelementptr inbounds i8, i8* %1, i64 16
%3 = lshr i64 %i, 2
%b = getelementptr inbounds i8, i8* %2, i64 %3
ret void
}
; CHECK-LABEL: test_with_lshr_different_sizes
; CHECK: NoAlias: i16* %m2.idx, i8* %m1
define void @test_with_lshr_different_sizes(i64 %i) {
%m0 = tail call i8* @malloc(i64 120)
%m1 = getelementptr inbounds i8, i8* %m0, i64 1
%m2 = getelementptr inbounds i8, i8* %m0, i64 2
%idx = lshr i64 %i, 2
%m2.i16 = bitcast i8* %m2 to i16*
%m2.idx = getelementptr inbounds i16, i16* %m2.i16, i64 %idx
ret void
}
; CHECK-LABEL: test_with_a_loop
; CHECK: NoAlias: i8* %a, i8* %b
define void @test_with_a_loop(i8* %mem) {
br label %for.loop
for.loop:
%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
%a = getelementptr inbounds i8, i8* %mem, i64 8
%a.plus1 = getelementptr inbounds i8, i8* %mem, i64 16
%i.64 = zext i32 %i to i64
%b = getelementptr inbounds i8, i8* %a.plus1, i64 %i.64
%i.plus1 = add nuw nsw i32 %i, 1
%cmp = icmp eq i32 %i.plus1, 10
br i1 %cmp, label %for.loop.exit, label %for.loop
for.loop.exit:
ret void
}
; CHECK-LABEL: test_with_varying_base_pointer_in_loop
; CHECK: NoAlias: i8* %a, i8* %b
define void @test_with_varying_base_pointer_in_loop(i8* %mem.orig) {
br label %for.loop
for.loop:
%mem = phi i8* [ %mem.orig, %0 ], [ %mem.plus1, %for.loop ]
%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
%a = getelementptr inbounds i8, i8* %mem, i64 8
%a.plus1 = getelementptr inbounds i8, i8* %mem, i64 16
%i.64 = zext i32 %i to i64
%b = getelementptr inbounds i8, i8* %a.plus1, i64 %i.64
%i.plus1 = add nuw nsw i32 %i, 1
%mem.plus1 = getelementptr inbounds i8, i8* %mem, i64 8
%cmp = icmp eq i32 %i.plus1, 10
br i1 %cmp, label %for.loop.exit, label %for.loop
for.loop.exit:
ret void
}
; CHECK-LABEL: test_sign_extension
; CHECK: MayAlias: i64* %b.i64, i8* %a
define void @test_sign_extension(i32 %p) {
%1 = tail call i8* @malloc(i64 120)
%p.64 = zext i32 %p to i64
%a = getelementptr inbounds i8, i8* %1, i64 %p.64
%p.minus1 = add i32 %p, -1
%p.minus1.64 = zext i32 %p.minus1 to i64
%b.i8 = getelementptr inbounds i8, i8* %1, i64 %p.minus1.64
%b.i64 = bitcast i8* %b.i8 to i64*
ret void
}
; CHECK-LABEL: test_fe_tools
; CHECK: MayAlias: i32* %a, i32* %b
define void @test_fe_tools([8 x i32]* %values) {
br label %reorder
for.loop:
%i = phi i32 [ 0, %reorder ], [ %i.next, %for.loop ]
%idxprom = zext i32 %i to i64
%b = getelementptr inbounds [8 x i32], [8 x i32]* %values, i64 0, i64 %idxprom
%i.next = add nuw nsw i32 %i, 1
%1 = icmp eq i32 %i.next, 10
br i1 %1, label %for.loop.exit, label %for.loop
reorder:
%a = getelementptr inbounds [8 x i32], [8 x i32]* %values, i64 0, i64 1
br label %for.loop
for.loop.exit:
ret void
}
@b = global i32 0, align 4
@d = global i32 0, align 4
; CHECK-LABEL: test_spec2006
; CHECK: MayAlias: i32** %x, i32** %y
define void @test_spec2006() {
%h = alloca [1 x [2 x i32*]], align 16
%d.val = load i32, i32* @d, align 4
%d.promoted = sext i32 %d.val to i64
%1 = icmp slt i32 %d.val, 2
br i1 %1, label %.lr.ph, label %3
.lr.ph: ; preds = %0
br label %2
; <label>:2 ; preds = %.lr.ph, %2
%i = phi i32 [ %d.val, %.lr.ph ], [ %i.plus1, %2 ]
%i.promoted = sext i32 %i to i64
%x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %d.promoted, i64 %i.promoted
%i.plus1 = add nsw i32 %i, 1
%cmp = icmp slt i32 %i.plus1, 2
br i1 %cmp, label %2, label %3
; <label>:3 ; preds = %._crit_edge, %0
%y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
ret void
}
; CHECK-LABEL: test_modulo_analysis_easy_case
; CHECK: NoAlias: i32** %x, i32** %y
define void @test_modulo_analysis_easy_case(i64 %i) {
%h = alloca [1 x [2 x i32*]], align 16
%x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i, i64 0
%y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
ret void
}
; CHECK-LABEL: test_modulo_analysis_in_loop
; CHECK: NoAlias: i32** %x, i32** %y
define void @test_modulo_analysis_in_loop() {
%h = alloca [1 x [2 x i32*]], align 16
br label %for.loop
for.loop:
%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
%i.promoted = sext i32 %i to i64
%x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 0
%y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
%i.plus1 = add nsw i32 %i, 1
%cmp = icmp slt i32 %i.plus1, 2
br i1 %cmp, label %for.loop, label %for.loop.exit
for.loop.exit:
ret void
}
; CHECK-LABEL: test_modulo_analysis_with_global
; CHECK: MayAlias: i32** %x, i32** %y
define void @test_modulo_analysis_with_global() {
%h = alloca [1 x [2 x i32*]], align 16
%b = load i32, i32* @b, align 4
%b.promoted = sext i32 %b to i64
br label %for.loop
for.loop:
%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
%i.promoted = sext i32 %i to i64
%x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 %b.promoted
%y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
%i.plus1 = add nsw i32 %i, 1
%cmp = icmp slt i32 %i.plus1, 2
br i1 %cmp, label %for.loop, label %for.loop.exit
for.loop.exit:
ret void
}
; CHECK-LABEL: test_const_eval
; CHECK: NoAlias: i8* %a, i8* %b
define void @test_const_eval(i8* %ptr, i64 %offset) {
%a = getelementptr inbounds i8, i8* %ptr, i64 %offset
%a.dup = getelementptr inbounds i8, i8* %ptr, i64 %offset
%three = zext i32 3 to i64
%b = getelementptr inbounds i8, i8* %a.dup, i64 %three
ret void
}
; CHECK-LABEL: test_const_eval_scaled
; CHECK: MustAlias: i8* %a, i8* %b
define void @test_const_eval_scaled(i8* %ptr) {
%three = zext i32 3 to i64
%six = mul i64 %three, 2
%a = getelementptr inbounds i8, i8* %ptr, i64 %six
%b = getelementptr inbounds i8, i8* %ptr, i64 6
ret void
}
; CHECK-LABEL: Function: foo
; CHECK: MustAlias: float* %arrayidx, float* %arrayidx4.84
define float @foo(i32 *%A, float %rend, float** %wayar) {
entry:
%x0 = load i32, i32* %A, align 4
%conv = sext i32 %x0 to i64
%mul = shl nsw i64 %conv, 3
%call = tail call i8* @malloc(i64 %mul)
%x1 = bitcast i8* %call to float*
%sub = add nsw i32 %x0, -1
%idxprom = sext i32 %sub to i64
%arrayidx = getelementptr inbounds float, float* %x1, i64 %idxprom
store float %rend, float* %arrayidx, align 8
%indvars.iv76.83 = add nsw i64 %conv, -1
%arrayidx4.84 = getelementptr inbounds float, float* %x1, i64 %indvars.iv76.83
%x4 = load float, float* %arrayidx4.84, align 8
ret float %x4
}
; CHECK-LABEL: Function: test_shl_nuw_zext
; CHECK: MustAlias: i8* %p.1, i8* %p.2
define void @test_shl_nuw_zext(i8* %p, i32 %x) {
%shl = shl nuw i32 %x, 1
%shl.ext = zext i32 %shl to i64
%ext = zext i32 %x to i64
%ext.shl = shl nuw i64 %ext, 1
%p.1 = getelementptr i8, i8* %p, i64 %shl.ext
%p.2 = getelementptr i8, i8* %p, i64 %ext.shl
ret void
}
; CHECK-LABEL: Function: test_shl_nsw_sext
; CHECK: MustAlias: i8* %p.1, i8* %p.2
define void @test_shl_nsw_sext(i8* %p, i32 %x) {
%shl = shl nsw i32 %x, 1
%shl.ext = sext i32 %shl to i64
%ext = sext i32 %x to i64
%ext.shl = shl nsw i64 %ext, 1
%p.1 = getelementptr i8, i8* %p, i64 %shl.ext
%p.2 = getelementptr i8, i8* %p, i64 %ext.shl
ret void
}
; CHECK-LABEL: Function: test_implicit_sext
; CHECK: MayAlias: i8* %p.1, i8* %p.2
define void @test_implicit_sext(i8* %p, i32 %x) {
%add = add i32 %x, 1
%ext = sext i32 %x to i64
%ext.add = add i64 %ext, 1
%p.1 = getelementptr i8, i8* %p, i32 %add
%p.2 = getelementptr i8, i8* %p, i64 %ext.add
ret void
}
; CHECK-LABEL: Function: test_partial_decomposition
; CHECK: MustAlias: i8* %p.1, i8* %p.2
define void @test_partial_decomposition(i8* %p, i32 %x) {
%add = add i32 %x, 1
%add.1 = add nsw i32 %add, 1
%add.2 = add nsw i32 %add, 1
%p.1 = getelementptr i8, i8* %p, i32 %add.1
%p.2 = getelementptr i8, i8* %p, i32 %add.2
ret void
}
; Function Attrs: nounwind
declare noalias i8* @malloc(i64)
|
