From 6c41ad8c9a93668c481436fc4a5e47e6f14776e7 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 31 May 2010 17:30:14 +0000 Subject: fix PR6623: when optimizing for size, don't inline memcpy/memsets that are too large. This causes the freebsd bootloader to be too large apparently. It's unclear if this should be an -Os or -Oz thing. Thoughts welcome. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105228 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/X86/memcpy.ll | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'test') diff --git a/test/CodeGen/X86/memcpy.ll b/test/CodeGen/X86/memcpy.ll index 16bf7c5a38..7bc31bec16 100644 --- a/test/CodeGen/X86/memcpy.ll +++ b/test/CodeGen/X86/memcpy.ll @@ -25,3 +25,33 @@ entry: ; CHECK: memcpy } +; Large constant memcpy's should lower to a call when optimizing for size. +; PR6623 +define void @test3(i8* nocapture %A, i8* nocapture %B) nounwind optsize noredzone { +entry: + tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false) + ret void +; CHECK: test3: +; CHECK: memcpy +} + +; Large constant memcpy's should be inlined when not optimizing for size. +define void @test4(i8* nocapture %A, i8* nocapture %B) nounwind noredzone { +entry: + tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false) + ret void +; CHECK: test4: +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +} + -- cgit v1.2.3