Rafael Espindola c9179b8b50 Prevent alias from pointing to weak aliases. ... Aliases are just another name for a position in a file. As such, the regular symbol resolutions are not applied. For example, given define void @my_func() { ret void } @my_alias = alias weak void ()* @my_func @my_alias2 = alias void ()* @my_alias We produce without this patch: .weak my_alias my_alias = my_func .globl my_alias2 my_alias2 = my_alias That is, in the resulting ELF file my_alias, my_func and my_alias are just 3 names pointing to offset 0 of .text. That is *not* the semantics of IR linking. For example, linking in a @my_alias = alias void ()* @other_func would require the strong my_alias to override the weak one and my_alias2 would end up pointing to other_func. There is no way to represent that with aliases being just another name, so the best solution seems to be to just disallow it, converting a miscompile into an error. llvm-svn: 204781		2014-03-26 04:48:47 +00:00
..
AArch64	Register Allocator: check other options before using a CSR for the first time.	2014-03-25 00:16:25 +00:00
ARM	test: fix CHECK lines	2014-03-25 03:39:39 +00:00
CPP
Generic	CommandLine: Exit successfully for -version and -help	2014-02-28 19:08:01 +00:00
Hexagon	Fix broken CHECK lines	2014-02-16 07:31:05 +00:00
Inputs
Mips	[mips] Correct lowering of VECTOR_SHUFFLE to VSHF.	2014-03-21 16:56:51 +00:00
MSP430	Fix known typos	2014-01-24 17:20:08 +00:00
NVPTX	Add test to test/CodeGen/NVPTX for "alloca buffer" arguments.	2014-03-24 16:52:30 +00:00
PowerPC	[PowerPC] Select between VSX A-type and M-type FMA instructions just before RA	2014-03-25 23:29:21 +00:00
R600	R600: Add failing testcase for <3 x i32> stores.	2014-03-25 16:50:55 +00:00
SPARC	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
SystemZ	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
Thumb	Add triples to try to fix the windows bots.	2014-02-13 16:49:47 +00:00
Thumb2	ARMv8 IfConversion must skip narrow instructions that a) define CPSR and b) wouldn't affect CPSR in an IT block	2014-02-26 11:27:28 +00:00
X86	Prevent alias from pointing to weak aliases.	2014-03-26 04:48:47 +00:00
XCore	[XCore] Add support for the "m" inline asm constraint.	2014-03-06 16:37:48 +00:00