1; This testcase consists of alias relations on 128-bit pointers that 2; should be completely resolvable by basicaa. 3 4; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-no-aliases -print-may-aliases -print-must-aliases -disable-output 2>&1 | FileCheck %s 5 6target 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" 7 8 9; test0 is similar to SimpleCases.ll 10 11%T = type { i32, [10 x i8] } 12 13; CHECK: Function: test0 14; CHECK-NOT: MayAlias: 15define void @test0(ptr addrspace(100) %P) { 16 %C = getelementptr %T, ptr addrspace(100) %P, i64 0, i32 1 17 %D = getelementptr %T, ptr addrspace(100) %P, i64 0, i32 1, i64 0 18 %E = getelementptr %T, ptr addrspace(100) %P, i64 0, i32 1, i64 5 19 load %T, ptr addrspace(100) %P 20 load i32, ptr addrspace(100) %P 21 load [10 x i8], ptr addrspace(100) %C 22 load i8, ptr addrspace(100) %D 23 load i8, ptr addrspace(100) %E 24 ret void 25} 26 27; test1 checks that >64 bits of index can be considered. 28; If BasicAA is truncating the arithmetic, it will conclude 29; that %A and %B must alias when in fact they must not. 30 31; CHECK: Function: test1 32; CHECK-NOT: MustAlias: 33; CHECK: NoAlias: 34; CHECK-SAME: %A 35; CHECK-SAME: %B 36define void @test1(ptr addrspace(100) %P, i128 %i) { 37 ; 1180591620717411303424 is 2**70 38 ; 590295810358705651712 is 2**69 39 %i70 = add i128 %i, 1180591620717411303424 40 %i69 = add i128 %i, 590295810358705651712 41 %A = getelementptr double, ptr addrspace(100) %P, i128 %i70 42 %B = getelementptr double, ptr addrspace(100) %P, i128 %i69 43 load double, ptr addrspace(100) %A 44 load double, ptr addrspace(100) %B 45 ret void 46} 47 48; test2 checks that >64 bits of index can be considered 49; and computes the same address in two ways to ensure that 50; they are considered equivalent. 51 52; CHECK: Function: test2 53; CHECK: MustAlias: 54; CHECK-SAME: %A 55; CHECK-SAME: %C 56define void @test2(ptr addrspace(100) %P, i128 %i) { 57 ; 1180591620717411303424 is 2**70 58 ; 590295810358705651712 is 2**69 59 %i70 = add i128 %i, 1180591620717411303424 60 %i69 = add i128 %i, 590295810358705651712 61 %j70 = add i128 %i69, 590295810358705651712 62 %A = getelementptr double, ptr addrspace(100) %P, i128 %i70 63 %C = getelementptr double, ptr addrspace(100) %P, i128 %j70 64 load double, ptr addrspace(100) %A 65 load double, ptr addrspace(100) %C 66 ret void 67} 68