forked from OSchip/llvm-project
61 lines
2.2 KiB
LLVM
61 lines
2.2 KiB
LLVM
; 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
|
|
}
|