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llvm-mirror/test/Analysis/MemorySSA/basicaa-memcpy.ll
Daniel Berlin e485ce96aa MemorySSA: Move to Analysis, from Transforms/Utils. It's used as
Analysis, it has Analysis passes, and once NewGVN is made an Analysis,
this removes the cross dependency from Analysis to Transform/Utils.
NFC.

llvm-svn: 299980
2017-04-11 20:06:36 +00:00

17 lines
619 B
LLVM

; RUN: opt -disable-output -basicaa -print-memoryssa %s 2>&1 | FileCheck %s
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
define void @source_clobber(i8* %a, i8* %b) {
; CHECK-LABEL: @source_clobber(
; CHECK-NEXT: ; 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 128, i32 1, i1 false)
; CHECK-NEXT: ; MemoryUse(liveOnEntry)
; CHECK-NEXT: [[X:%.*]] = load i8, i8* %b
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 128, i32 1, i1 false)
%x = load i8, i8* %b
ret void
}