Bill Schmidt 7a6cb15a92 This patch addresses PR13949. ... For the PowerPC 64-bit ELF Linux ABI, aggregates of size less than 8 bytes are to be passed in the low-order bits ("right-adjusted") of the doubleword register or memory slot assigned to them. A previous patch addressed this for aggregates passed in registers. However, small aggregates passed in the overflow portion of the parameter save area are still being passed left-adjusted. The fix is made in PPCTargetLowering::LowerCall_Darwin_Or_64SVR4 on the caller side, and in PPCTargetLowering::LowerFormalArguments_64SVR4 on the callee side. The main fix on the callee side simply extends existing logic for 1- and 2-byte objects to 1- through 7-byte objects, and correcting a constant left over from 32-bit code. There is also a fix to a bogus calculation of the offset to the following argument in the parameter save area. On the caller side, again a constant left over from 32-bit code is fixed. Additionally, some code for 1, 2, and 4-byte objects is duplicated to handle the 3, 5, 6, and 7-byte objects for SVR4 only. The LowerCall_Darwin_Or_64SVR4 logic is getting fairly convoluted trying to handle both ABIs, and I propose to separate this into two functions in a future patch, at which time the duplication can be removed. The patch adds a new test (structsinmem.ll) to demonstrate correct passing of structures of all seven sizes. Eight dummy parameters are used to force these structures to be in the overflow portion of the parameter save area. As a side effect, this corrects the case when aggregates passed in registers are saved into the first eight doublewords of the parameter save area: Previously they were stored left-justified, and now are properly stored right-justified. This requires changing the expected output of existing test case structsinregs.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166022 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-16 13:30:53 +00:00
..
Analysis	Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis.	2012-10-15 16:24:29 +00:00
Archive	Mark checkSignature const, and in turn stop casting away const from	2012-09-05 22:09:23 +00:00
AsmParser	Move the Attributes::Builder outside of the Attributes class and into its own class named AttrBuilder. No functionality change.	2012-10-15 20:35:56 +00:00
Bitcode	Move the Attributes::Builder outside of the Attributes class and into its own class named AttrBuilder. No functionality change.	2012-10-15 20:35:56 +00:00
CodeGen	Issue:	2012-10-16 07:16:47 +00:00
DebugInfo	Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION.	2012-09-18 02:01:41 +00:00
ExecutionEngine	Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis.	2012-10-15 16:24:29 +00:00
Linker	Move the "findUsedStructTypes" functionality outside of the Module class.	2012-08-03 00:30:35 +00:00
MC	[ms-inline asm] If we parsed a statement and the opcode is valid, then it's an instruction.	2012-10-15 19:08:18 +00:00
Object	Cosmetic changes	2012-10-10 01:45:52 +00:00
Support	Add powerpc-ibm-aix to Triple. Patch by Kai.	2012-10-12 11:08:57 +00:00
TableGen	tblgen: Compile TableGen without RTTI.	2012-10-10 20:27:18 +00:00
Target	This patch addresses PR13949.	2012-10-16 13:30:53 +00:00
Transforms	Use the Attributes::get method which takes an AttrVal value directly to simplify the code a bit. No functionality change.	2012-10-16 05:23:31 +00:00
VMCore	Cleanup whitespace.	2012-10-16 06:10:45 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile