From b17a94cf1b843d8032b5fdecc30a1de1988e07ce Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Tue, 28 Jul 2015 17:18:25 +0000
Subject: [PATCH] add tests to show broken current behavior of minsize
 attribute

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243451 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/memcpy.ll | 67 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/test/CodeGen/X86/memcpy.ll b/test/CodeGen/X86/memcpy.ll
index f582571252b..78d250930c2 100644
--- a/test/CodeGen/X86/memcpy.ll
+++ b/test/CodeGen/X86/memcpy.ll
@@ -59,6 +59,73 @@ entry:
 ; DARWIN: movq
 }
 
+; FIXME: Both Linux and Darwin should lower to a memcpy call; minsize is on.
+define void @test3_minsize(i8* nocapture %A, i8* nocapture %B) nounwind minsize noredzone {
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false)
+  ret void
+; LINUX-LABEL: test3_minsize:
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+; LINUX: movq
+
+; DARWIN-LABEL: test3_minsize:
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+}
+
+; FIXME: Darwin should lower to a memcpy call; minsize is on.
+define void @test3_minsize_optsize(i8* nocapture %A, i8* nocapture %B) nounwind optsize minsize noredzone {
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false)
+  ret void
+; LINUX-LABEL: test3_minsize_optsize:
+; LINUX: memcpy
+
+; DARWIN-LABEL: test3_minsize_optsize:
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+; DARWIN: movq
+}
+
 ; Large constant memcpy's should be inlined when not optimizing for size.
 define void @test4(i8* nocapture %A, i8* nocapture %B) nounwind noredzone {
 entry:
-- 
2.34.1