mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-23 15:29:51 +00:00
55 lines
1.7 KiB
LLVM
55 lines
1.7 KiB
LLVM
|
; RUN: opt < %s -basicaa -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) {
|
||
|
|
%pi = getelementptr i32* %p, i32 0
|
||
|
|
%pi.next = getelementptr i32* %p, i32 1
|
||
|
|
%b = icmp eq i16 %i, 0
|
||
|
|
br i1 %b, label %bb1, label %bb2
|
||
|
|
|
||
|
|
bb1:
|
||
|
|
%f = getelementptr i32* %pi, i32 1
|
||
|
|
%g = getelementptr i32* %pi.next, i32 1
|
||
|
|
br label %bb3
|
||
|
|
bb2:
|
||
|
|
%f2 = getelementptr i32* %pi, i32 1
|
||
|
|
%g2 = getelementptr 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* %ptr_phi , i32 1
|
||
|
|
%g1 = getelementptr i32* %ptr_phi2 , i32 1
|
||
|
|
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that geps with equal indices of noalias base pointers stay noalias.
|
||
|
|
define i32 @test2([2 x i32]* %p, i32 %i) {
|
||
|
|
%pi = getelementptr [2 x i32]* %p, i32 0
|
||
|
|
%pi.next = getelementptr [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]* %pi, i32 1
|
||
|
|
%g = getelementptr [2 x i32]* %pi.next, i32 1
|
||
|
|
br label %bb3
|
||
|
|
bb2:
|
||
|
|
%f2 = getelementptr [2 x i32]* %pi, i32 1
|
||
|
|
%g2 = getelementptr [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]* %ptr_phi , i32 1, i32 %i
|
||
|
|
%g1 = getelementptr [2 x i32]* %ptr_phi2 , i32 1, i32 %i
|
||
|
|
|
||
|
|
ret i32 0
|
||
|
|
}
|