| ; This testcase consists of alias relations on 128-bit pointers that |
| ; should be completely resolvable by basicaa. |
| |
| ; RUN: opt < %s -basicaa -aa-eval -print-no-aliases -print-may-aliases -print-must-aliases -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-i128:128:128-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-p100:128:64:64-p101:128:64:64" |
| |
| |
| ; test0 is similar to SimpleCases.ll |
| |
| %T = type { i32, [10 x i8] } |
| |
| ; CHECK: Function: test0 |
| ; CHECK-NOT: MayAlias: |
| define void @test0(%T addrspace(100)* %P) { |
| %A = getelementptr %T, %T addrspace(100)* %P, i64 0 |
| %B = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 0 |
| %C = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 1 |
| %D = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 1, i64 0 |
| %E = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 1, i64 5 |
| ret void |
| } |
| |
| ; test1 checks that >64 bits of index can be considered. |
| ; If BasicAA is truncating the arithmetic, it will conclude |
| ; that %A and %B must alias when in fact they must not. |
| |
| ; CHECK: Function: test1 |
| ; CHECK-NOT: MustAlias: |
| ; CHECK: NoAlias: |
| ; CHECK-SAME: %A |
| ; CHECK-SAME: %B |
| define void @test1(double addrspace(100)* %P, i128 %i) { |
| ; 1180591620717411303424 is 2**70 |
| ; 590295810358705651712 is 2**69 |
| %i70 = add i128 %i, 1180591620717411303424 |
| %i69 = add i128 %i, 590295810358705651712 |
| %A = getelementptr double, double addrspace(100)* %P, i128 %i70 |
| %B = getelementptr double, double addrspace(100)* %P, i128 %i69 |
| ret void |
| } |
| |
| ; test2 checks that >64 bits of index can be considered |
| ; and computes the same address in two ways to ensure that |
| ; they are considered equivalent. |
| |
| ; CHECK: Function: test2 |
| ; CHECK: MustAlias: |
| ; CHECK-SAME: %A |
| ; CHECK-SAME: %C |
| define void @test2(double addrspace(100)* %P, i128 %i) { |
| ; 1180591620717411303424 is 2**70 |
| ; 590295810358705651712 is 2**69 |
| %i70 = add i128 %i, 1180591620717411303424 |
| %i69 = add i128 %i, 590295810358705651712 |
| %j70 = add i128 %i69, 590295810358705651712 |
| %A = getelementptr double, double addrspace(100)* %P, i128 %i70 |
| %C = getelementptr double, double addrspace(100)* %P, i128 %j70 |
| ret void |
| } |