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llvm-project/llvm/test/Bitcode/padding.test

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Add a test for padded bitcode files. llvm-svn: 239829
2015-06-17 00:36:15 +08:00
Test that both llvm-dis (uses a data streamer) and opt (no data streamer)
Improve handling of end of file in the bitcode reader. Before this patch the bitcode reader would read a module from a file that contained in order: * Any number of non MODULE_BLOCK sub blocks. * One MODULE_BLOCK * Any number of non MODULE_BLOCK sub blocks. * 4 '\n' characters to handle OS X's ranlib. Since we support lazy reading of modules, any information that is relevant for the module has to be in the MODULE_BLOCK or before it. We don't gain anything from checking what is after. This patch then changes the reader to stop once the MODULE_BLOCK has been successfully parsed. This avoids the ugly special case for .bc files in an archive and makes it easier to embed bitcode files. llvm-svn: 239845
2015-06-17 04:03:39 +08:00
handle a .bc file with any padding.
Add a test for padded bitcode files. llvm-svn: 239829
2015-06-17 00:36:15 +08:00
Improve handling of end of file in the bitcode reader. Before this patch the bitcode reader would read a module from a file that contained in order: * Any number of non MODULE_BLOCK sub blocks. * One MODULE_BLOCK * Any number of non MODULE_BLOCK sub blocks. * 4 '\n' characters to handle OS X's ranlib. Since we support lazy reading of modules, any information that is relevant for the module has to be in the MODULE_BLOCK or before it. We don't gain anything from checking what is after. This patch then changes the reader to stop once the MODULE_BLOCK has been successfully parsed. This avoids the ugly special case for .bc files in an archive and makes it easier to embed bitcode files. llvm-svn: 239845
2015-06-17 04:03:39 +08:00
A file padded with '\n' can be produced under a peculiar situation:
Add a test for padded bitcode files. llvm-svn: 239829
2015-06-17 00:36:15 +08:00
* A .bc is produced os OS X, but without a darwin triple, so it has no
wrapper.
* It is included in a .a archive
* ranlib is ran on that archive. It will pad the members to make them multiple
of 8 bytes.
Improve handling of end of file in the bitcode reader. Before this patch the bitcode reader would read a module from a file that contained in order: * Any number of non MODULE_BLOCK sub blocks. * One MODULE_BLOCK * Any number of non MODULE_BLOCK sub blocks. * 4 '\n' characters to handle OS X's ranlib. Since we support lazy reading of modules, any information that is relevant for the module has to be in the MODULE_BLOCK or before it. We don't gain anything from checking what is after. This patch then changes the reader to stop once the MODULE_BLOCK has been successfully parsed. This avoids the ugly special case for .bc files in an archive and makes it easier to embed bitcode files. llvm-svn: 239845
2015-06-17 04:03:39 +08:00
and there is no reason to not handle the general case.
Add a test for padded bitcode files. llvm-svn: 239829
2015-06-17 00:36:15 +08:00
RUN: llvm-dis -disable-output %p/Inputs/padding.bc
RUN: opt -disable-output %p/Inputs/padding.bc
Improve handling of end of file in the bitcode reader. Before this patch the bitcode reader would read a module from a file that contained in order: * Any number of non MODULE_BLOCK sub blocks. * One MODULE_BLOCK * Any number of non MODULE_BLOCK sub blocks. * 4 '\n' characters to handle OS X's ranlib. Since we support lazy reading of modules, any information that is relevant for the module has to be in the MODULE_BLOCK or before it. We don't gain anything from checking what is after. This patch then changes the reader to stop once the MODULE_BLOCK has been successfully parsed. This avoids the ugly special case for .bc files in an archive and makes it easier to embed bitcode files. llvm-svn: 239845
2015-06-17 04:03:39 +08:00
RUN: llvm-dis -disable-output %p/Inputs/padding-garbage.bc
RUN: opt -disable-output %p/Inputs/padding-garbage.bc