mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +00:00
7c9c6ed761
Essentially the same as the GEP change in r230786.
A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)
import fileinput
import sys
import re
pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")
for line in sys.stdin:
sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
LLVM
; RUN: opt -S -basicaa -dse < %s | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; We incorrectly returned noalias in the example below for "ptr.64" and
|
|
; "either_ptr.64".
|
|
; PR18460
|
|
|
|
%nested = type { %nested.i64 }
|
|
%nested.i64 = type { i64 }
|
|
|
|
define i64 @testcase(%nested * noalias %p1, %nested * noalias %p2,
|
|
i32 %a, i32 %b) {
|
|
%ptr = getelementptr inbounds %nested, %nested* %p1, i64 -1, i32 0
|
|
%ptr.64 = getelementptr inbounds %nested.i64, %nested.i64* %ptr, i64 0, i32 0
|
|
%ptr2= getelementptr inbounds %nested, %nested* %p2, i64 0, i32 0
|
|
%cmp = icmp ult i32 %a, %b
|
|
%either_ptr = select i1 %cmp, %nested.i64* %ptr2, %nested.i64* %ptr
|
|
%either_ptr.64 = getelementptr inbounds %nested.i64, %nested.i64* %either_ptr, i64 0, i32 0
|
|
|
|
; Because either_ptr.64 and ptr.64 can alias (we used to return noalias)
|
|
; elimination of the first store is not valid.
|
|
|
|
; CHECK: store i64 2
|
|
; CHECK: load
|
|
; CHECK; store i64 1
|
|
|
|
store i64 2, i64* %ptr.64, align 8
|
|
%r = load i64, i64* %either_ptr.64, align 8
|
|
store i64 1, i64* %ptr.64, align 8
|
|
ret i64 %r
|
|
}
|