210 lines
6.2 KiB
LLVM
210 lines
6.2 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-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"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK-LABEL: test_with_zext
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; CHECK: NoAlias: i8* %a, i8* %b
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define void @test_with_zext() {
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%1 = tail call i8* @malloc(i64 120)
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%a = getelementptr inbounds i8* %1, i64 8
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%2 = getelementptr inbounds i8* %1, i64 16
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%3 = zext i32 3 to i64
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%b = getelementptr inbounds i8* %2, i64 %3
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ret void
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}
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; CHECK-LABEL: test_with_lshr
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; CHECK: NoAlias: i8* %a, i8* %b
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define void @test_with_lshr(i64 %i) {
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%1 = tail call i8* @malloc(i64 120)
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%a = getelementptr inbounds i8* %1, i64 8
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%2 = getelementptr inbounds i8* %1, i64 16
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%3 = lshr i64 %i, 2
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%b = getelementptr inbounds i8* %2, i64 %3
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ret void
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}
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; CHECK-LABEL: test_with_a_loop
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; CHECK: NoAlias: i8* %a, i8* %b
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define void @test_with_a_loop(i8* %mem) {
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br label %for.loop
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for.loop:
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%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
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%a = getelementptr inbounds i8* %mem, i64 8
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%a.plus1 = getelementptr inbounds i8* %mem, i64 16
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%i.64 = zext i32 %i to i64
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%b = getelementptr inbounds i8* %a.plus1, i64 %i.64
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%i.plus1 = add nuw nsw i32 %i, 1
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%cmp = icmp eq i32 %i.plus1, 10
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br i1 %cmp, label %for.loop.exit, label %for.loop
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for.loop.exit:
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ret void
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}
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; CHECK-LABEL: test_with_varying_base_pointer_in_loop
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; CHECK: NoAlias: i8* %a, i8* %b
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define void @test_with_varying_base_pointer_in_loop(i8* %mem.orig) {
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br label %for.loop
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for.loop:
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%mem = phi i8* [ %mem.orig, %0 ], [ %mem.plus1, %for.loop ]
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%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
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%a = getelementptr inbounds i8* %mem, i64 8
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%a.plus1 = getelementptr inbounds i8* %mem, i64 16
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%i.64 = zext i32 %i to i64
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%b = getelementptr inbounds i8* %a.plus1, i64 %i.64
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%i.plus1 = add nuw nsw i32 %i, 1
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%mem.plus1 = getelementptr inbounds i8* %mem, i64 8
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%cmp = icmp eq i32 %i.plus1, 10
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br i1 %cmp, label %for.loop.exit, label %for.loop
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for.loop.exit:
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ret void
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}
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; CHECK-LABEL: test_sign_extension
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; CHECK: PartialAlias: i64* %b.i64, i8* %a
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define void @test_sign_extension(i32 %p) {
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%1 = tail call i8* @malloc(i64 120)
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%p.64 = zext i32 %p to i64
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%a = getelementptr inbounds i8* %1, i64 %p.64
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%p.minus1 = add i32 %p, -1
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%p.minus1.64 = zext i32 %p.minus1 to i64
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%b.i8 = getelementptr inbounds i8* %1, i64 %p.minus1.64
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%b.i64 = bitcast i8* %b.i8 to i64*
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ret void
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}
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; CHECK-LABEL: test_fe_tools
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; CHECK: PartialAlias: i32* %a, i32* %b
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define void @test_fe_tools([8 x i32]* %values) {
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br label %reorder
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for.loop:
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%i = phi i32 [ 0, %reorder ], [ %i.next, %for.loop ]
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%idxprom = zext i32 %i to i64
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%b = getelementptr inbounds [8 x i32]* %values, i64 0, i64 %idxprom
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%i.next = add nuw nsw i32 %i, 1
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%1 = icmp eq i32 %i.next, 10
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br i1 %1, label %for.loop.exit, label %for.loop
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reorder:
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%a = getelementptr inbounds [8 x i32]* %values, i64 0, i64 1
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br label %for.loop
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for.loop.exit:
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ret void
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}
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@b = global i32 0, align 4
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@d = global i32 0, align 4
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; CHECK-LABEL: test_spec2006
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; CHECK: PartialAlias: i32** %x, i32** %y
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define void @test_spec2006() {
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%h = alloca [1 x [2 x i32*]], align 16
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%d.val = load i32* @d, align 4
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%d.promoted = sext i32 %d.val to i64
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%1 = icmp slt i32 %d.val, 2
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br i1 %1, label %.lr.ph, label %3
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.lr.ph: ; preds = %0
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br label %2
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; <label>:2 ; preds = %.lr.ph, %2
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%i = phi i32 [ %d.val, %.lr.ph ], [ %i.plus1, %2 ]
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%i.promoted = sext i32 %i to i64
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%x = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 %d.promoted, i64 %i.promoted
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%i.plus1 = add nsw i32 %i, 1
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%cmp = icmp slt i32 %i.plus1, 2
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br i1 %cmp, label %2, label %3
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; <label>:3 ; preds = %._crit_edge, %0
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%y = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
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ret void
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}
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; CHECK-LABEL: test_modulo_analysis_easy_case
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; CHECK: NoAlias: i32** %x, i32** %y
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define void @test_modulo_analysis_easy_case(i64 %i) {
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%h = alloca [1 x [2 x i32*]], align 16
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%x = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 %i, i64 0
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%y = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
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ret void
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}
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; CHECK-LABEL: test_modulo_analysis_in_loop
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; CHECK: NoAlias: i32** %x, i32** %y
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define void @test_modulo_analysis_in_loop() {
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%h = alloca [1 x [2 x i32*]], align 16
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br label %for.loop
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for.loop:
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%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
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%i.promoted = sext i32 %i to i64
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%x = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 0
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%y = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
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%i.plus1 = add nsw i32 %i, 1
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%cmp = icmp slt i32 %i.plus1, 2
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br i1 %cmp, label %for.loop, label %for.loop.exit
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for.loop.exit:
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ret void
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}
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; CHECK-LABEL: test_modulo_analysis_with_global
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; CHECK: PartialAlias: i32** %x, i32** %y
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define void @test_modulo_analysis_with_global() {
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%h = alloca [1 x [2 x i32*]], align 16
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%b = load i32* @b, align 4
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%b.promoted = sext i32 %b to i64
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br label %for.loop
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for.loop:
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%i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ]
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%i.promoted = sext i32 %i to i64
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%x = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 %b.promoted
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%y = getelementptr inbounds [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1
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%i.plus1 = add nsw i32 %i, 1
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%cmp = icmp slt i32 %i.plus1, 2
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br i1 %cmp, label %for.loop, label %for.loop.exit
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for.loop.exit:
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ret void
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}
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; CHECK-LABEL: test_const_eval
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; CHECK: NoAlias: i8* %a, i8* %b
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define void @test_const_eval(i8* %ptr, i64 %offset) {
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%a = getelementptr inbounds i8* %ptr, i64 %offset
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%a.dup = getelementptr inbounds i8* %ptr, i64 %offset
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%three = zext i32 3 to i64
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%b = getelementptr inbounds i8* %a.dup, i64 %three
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ret void
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}
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; CHECK-LABEL: test_const_eval_scaled
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; CHECK: MustAlias: i8* %a, i8* %b
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define void @test_const_eval_scaled(i8* %ptr) {
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%three = zext i32 3 to i64
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%six = mul i64 %three, 2
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%a = getelementptr inbounds i8* %ptr, i64 %six
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%b = getelementptr inbounds i8* %ptr, i64 6
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ret void
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}
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; Function Attrs: nounwind
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declare noalias i8* @malloc(i64)
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