hanchenye-llvm-project

Commit Graph

Author	SHA1	Message	Date
Rafael Espindola	83a362cde8	Change the .ll syntax for comdats and add a syntactic sugar. In order to make comdats always explicit in the IR, we decided to make the syntax a bit more compact for the case of a GlobalObject in a comdat with the same name. Just dropping the $name causes problems for @foo = globabl i32 0, comdat $bar = comdat ... and declare void @foo() comdat $bar = comdat ... So the syntax is changed to @g1 = globabl i32 0, comdat($c1) @g2 = globabl i32 0, comdat and declare void @foo() comdat($c1) declare void @foo() comdat llvm-svn: 225302	2015-01-06 22:55:16 +00:00
Rafael Espindola	19bf57eed4	Simplify test. NFC. This is just testing the largest merge mode for comdats. No need to use hard to read names and fancy types. llvm-svn: 223665	2014-12-08 17:02:50 +00:00
David Majnemer	dad0a645a7	IR: Add COMDATs to the IR This new IR facility allows us to represent the object-file semantic of a COMDAT group. COMDATs allow us to tie together sections and make the inclusion of one dependent on another. This is required to implement features like MS ABI VFTables and optimizing away certain kinds of initialization in C++. This functionality is only representable in COFF and ELF, Mach-O has no similar mechanism. Differential Revision: http://reviews.llvm.org/D4178 llvm-svn: 211920	2014-06-27 18:19:56 +00:00

Author

SHA1

Message

Date

Rafael Espindola

83a362cde8

Change the .ll syntax for comdats and add a syntactic sugar.

In order to make comdats always explicit in the IR, we decided to make
the syntax a bit more compact for the case of a GlobalObject in a
comdat with the same name.

Just dropping the $name causes problems for

@foo = globabl i32 0, comdat
$bar = comdat ...

and

declare void @foo() comdat
$bar = comdat ...

So the syntax is changed to

@g1 = globabl i32 0, comdat($c1)
@g2 = globabl i32 0, comdat

and

declare void @foo() comdat($c1)
declare void @foo() comdat

llvm-svn: 225302

2015-01-06 22:55:16 +00:00

Rafael Espindola

19bf57eed4

Simplify test. NFC.

This is just testing the largest merge mode for comdats. No need to use
hard to read names and fancy types.

llvm-svn: 223665

2014-12-08 17:02:50 +00:00

David Majnemer

dad0a645a7

IR: Add COMDATs to the IR

This new IR facility allows us to represent the object-file semantic of
a COMDAT group.

COMDATs allow us to tie together sections and make the inclusion of one
dependent on another. This is required to implement features like MS
ABI VFTables and optimizing away certain kinds of initialization in C++.

This functionality is only representable in COFF and ELF, Mach-O has no
similar mechanism.

Differential Revision: http://reviews.llvm.org/D4178

llvm-svn: 211920

2014-06-27 18:19:56 +00:00

3 Commits