57d57b1afd
With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
65 lines
2.1 KiB
LLVM
65 lines
2.1 KiB
LLVM
; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
|
|
|
|
; Check that geps with equal base offsets of noalias base pointers stay noalias.
|
|
define i32 @test(i32* %p, i16 %i) {
|
|
; CHECK-LABEL: Function: test:
|
|
%pi = getelementptr i32, i32* %p, i32 0
|
|
%pi.next = getelementptr i32, i32* %p, i32 1
|
|
%b = icmp eq i16 %i, 0
|
|
br i1 %b, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%f = getelementptr i32, i32* %pi, i32 1
|
|
%g = getelementptr i32, i32* %pi.next, i32 1
|
|
br label %bb3
|
|
bb2:
|
|
%f2 = getelementptr i32, i32* %pi, i32 1
|
|
%g2 = getelementptr i32, i32* %pi.next, i32 1
|
|
br label %bb3
|
|
|
|
bb3:
|
|
%ptr_phi = phi i32* [ %f, %bb1 ], [ %f2, %bb2 ]
|
|
%ptr_phi2 = phi i32* [ %g, %bb1 ], [ %g2, %bb2 ]
|
|
; CHECK: NoAlias: i32* %f1, i32* %g1
|
|
%f1 = getelementptr i32, i32* %ptr_phi , i32 1
|
|
%g1 = getelementptr i32, i32* %ptr_phi2 , i32 1
|
|
; This should also work if the access size is not the same.
|
|
; CHECK: NoAlias: i32* %f1, i16* %h1
|
|
%h1 = bitcast i32* %g1 to i16*
|
|
load i32, i32* %f1
|
|
load i32, i32* %g1
|
|
load i16, i16* %h1
|
|
|
|
ret i32 0
|
|
}
|
|
|
|
; Check that geps with equal indices of noalias base pointers stay noalias.
|
|
define i32 @test2([2 x i32]* %p, i32 %i) {
|
|
; CHECK-LABEL: Function: test2:
|
|
%pi = getelementptr [2 x i32], [2 x i32]* %p, i32 0
|
|
%pi.next = getelementptr [2 x i32], [2 x i32]* %p, i32 1
|
|
%b = icmp eq i32 %i, 0
|
|
br i1 %b, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%f = getelementptr [2 x i32], [2 x i32]* %pi, i32 1
|
|
%g = getelementptr [2 x i32], [2 x i32]* %pi.next, i32 1
|
|
br label %bb3
|
|
bb2:
|
|
%f2 = getelementptr [2 x i32], [2 x i32]* %pi, i32 1
|
|
%g2 = getelementptr [2 x i32], [2 x i32]* %pi.next, i32 1
|
|
br label %bb3
|
|
bb3:
|
|
%ptr_phi = phi [2 x i32]* [ %f, %bb1 ], [ %f2, %bb2 ]
|
|
%ptr_phi2 = phi [2 x i32]* [ %g, %bb1 ], [ %g2, %bb2 ]
|
|
; CHECK: NoAlias: i32* %f1, i32* %g1
|
|
%f1 = getelementptr [2 x i32], [2 x i32]* %ptr_phi , i32 1, i32 %i
|
|
%g1 = getelementptr [2 x i32], [2 x i32]* %ptr_phi2 , i32 1, i32 %i
|
|
load i32, i32* %f1
|
|
load i32, i32* %g1
|
|
|
|
ret i32 0
|
|
}
|