From 01cdc2016d59acbf596d367da064a5f9da7fc8d8 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 6 Jan 2011 22:25:00 +0000 Subject: [PATCH] With Benjamin's recent amazing patches, we should be able to do even better things :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122978 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/README.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/lib/Target/README.txt b/lib/Target/README.txt index bedc893fbb1..d13ea736a10 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -2073,3 +2073,16 @@ The icmp should fold to false. This CSE opportunity is only available after GVN and InstCombine have run. //===---------------------------------------------------------------------===// + +memcpyopt should turn this: + +define i8* @test10(i32 %x) { + %alloc = call noalias i8* @malloc(i32 %x) nounwind + call void @llvm.memset.p0i8.i32(i8* %alloc, i8 0, i32 %x, i32 1, i1 false) + ret i8* %alloc +} + +into a call to calloc. We should make sure that we analyze calloc as +aggressively as malloc though. + +//===---------------------------------------------------------------------===//