From 6cb8c23db1c3becdce6dfbf1b7f1677faca4251e Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Thu, 26 Aug 2010 15:41:53 +0000
Subject: Reapply r112091 and r111922, support for metadata linking, with a
 fix: add a flag to MapValue and friends which indicates whether any
 module-level mappings are being made. In the common case of inlining, no
 module-level mappings are needed, so MapValue doesn't need to examine
 non-function-local metadata, which can be very expensive in the case of a
 large module with really deep metadata (e.g. a large C++ program compiled
 with -g).

This flag is a little awkward; perhaps eventually it can be moved
into the ClonedCodeInfo class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112190 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Linker/metadata-a.ll | 15 +++++++++++++++
 test/Linker/metadata-b.ll |  9 +++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 test/Linker/metadata-a.ll
 create mode 100644 test/Linker/metadata-b.ll

(limited to 'test/Linker')

diff --git a/test/Linker/metadata-a.ll b/test/Linker/metadata-a.ll
new file mode 100644
index 0000000..5a9d2e4
--- /dev/null
+++ b/test/Linker/metadata-a.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-link %s %p/metadata-b.ll -S -o - | FileCheck %s
+
+; CHECK: define void @foo(i32 %a)
+; CHECK: ret void, !attach !0, !also !{i32 %a}
+; CHECK: define void @goo(i32 %b)
+; CHECK: ret void, !attach !1, !and !{i32 %b}
+; CHECK: !0 = metadata !{i32 524334, void (i32)* @foo}
+; CHECK: !1 = metadata !{i32 524334, void (i32)* @goo}
+
+define void @foo(i32 %a) nounwind {
+entry:
+  ret void, !attach !0, !also !{ i32 %a }
+}
+
+!0 = metadata !{i32 524334, void (i32)* @foo}
diff --git a/test/Linker/metadata-b.ll b/test/Linker/metadata-b.ll
new file mode 100644
index 0000000..ef0270a
--- /dev/null
+++ b/test/Linker/metadata-b.ll
@@ -0,0 +1,9 @@
+; This file is for use with metadata-a.ll
+; RUN: true
+
+define void @goo(i32 %b) nounwind {
+entry:
+  ret void, !attach !0, !and !{ i32 %b }
+}
+
+!0 = metadata !{i32 524334, void (i32)* @goo}
-- 
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