llvm-6502/test/Analysis/BasicAA/full-store-partial-alias.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
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
2015-02-27 21:17:42 +00:00

38 lines
1.3 KiB
LLVM

; RUN: opt -S -tbaa -basicaa -gvn < %s | FileCheck -check-prefix=BASICAA %s
; RUN: opt -S -tbaa -gvn < %s | FileCheck %s
; rdar://8875631, rdar://8875069
; BasicAA should notice that the store stores to the entire %u object,
; so the %tmp5 load is PartialAlias with the store and suppress TBAA.
; Without BasicAA, TBAA should say that %tmp5 is NoAlias with the store.
target datalayout = "e-p:64:64:64"
%union.anon = type { double }
@u = global %union.anon { double -2.500000e-01 }, align 8
@endianness_test = global i64 1, align 8
define i32 @signbit(double %x) nounwind {
; BASICAA: ret i32 %tmp5.lobit
; CHECK: ret i32 0
entry:
%u = alloca %union.anon, align 8
%tmp9 = getelementptr inbounds %union.anon, %union.anon* %u, i64 0, i32 0
store double %x, double* %tmp9, align 8, !tbaa !0
%tmp2 = load i32, i32* bitcast (i64* @endianness_test to i32*), align 8, !tbaa !3
%idxprom = sext i32 %tmp2 to i64
%tmp4 = bitcast %union.anon* %u to [2 x i32]*
%arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* %tmp4, i64 0, i64 %idxprom
%tmp5 = load i32, i32* %arrayidx, align 4, !tbaa !3
%tmp5.lobit = lshr i32 %tmp5, 31
ret i32 %tmp5.lobit
}
!0 = !{!4, !4, i64 0}
!1 = !{!"omnipotent char", !2}
!2 = !{!"Simple C/C++ TBAA", null}
!3 = !{!5, !5, i64 0}
!4 = !{!"double", !1}
!5 = !{!"int", !1}