Ulrich Weigand 86aef0a4f0 On PowerPC64, integer return values (as well as arguments) are supposed ... to be extended to a full register. This is modeled in the IR by marking the return value (or argument) with a signext or zeroext attribute. However, while these attributes are respected for function arguments, they are currently ignored for function return values by the PowerPC back-end. This patch updates PPCCallingConv.td to ask for the promotion to i64, and fixes LowerReturn and LowerCallResult to implement it. The new test case verifies that both arguments and return values are properly extended when passing them; and also that the optimizers understand incoming argument and return values are in fact guaranteed by the ABI to be extended. The patch caused a spurious breakage in CodeGen/PowerPC/coalesce-ext.ll, since the test case used a "ret" instruction to create a use of an i32 value at the end of the function (to set up data flow as required for what the test is intended to test). Since there's now an implicit promotion to i64, that data flow no longer works as expected. To fix this, this patch now adds an extra "add" to ensure we have an appropriate use of the i32 value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167396 91177308-0d34-0410-b5e6-96231b3b80d8		2012-11-05 19:39:45 +00:00
..
Analysis	Implement the cost of abnormal x86 instruction lowering as a table.	2012-11-05 19:32:46 +00:00
Archive
Assembler	Don't crash if a .ll file contains a forward-reference that looks like a global	2012-10-11 00:38:25 +00:00
Bindings/Ocaml	Move TargetData to DataLayout.	2012-10-08 16:39:34 +00:00
Bitcode	Change encoding of instruction operands in bitcode binaries to be relative	2012-10-11 20:20:40 +00:00
BugPoint	Fix unexpected passes. These test do work with LTO on linux. I tested both	2012-10-26 02:19:02 +00:00
CodeGen	On PowerPC64, integer return values (as well as arguments) are supposed	2012-11-05 19:39:45 +00:00
DebugInfo	Make sure to generate the right kind of MDNode for enum forward declarations.	2012-10-05 01:49:14 +00:00
ExecutionEngine	Align the data section correctly when loading an ELF file.	2012-10-29 10:47:07 +00:00
Feature	Change ForceSizeOpt attribute into MinSize attribute	2012-10-30 16:32:52 +00:00
Instrumentation	[asan] don't instrument globals that we've created ourselves (reduces the binary size a bit)	2012-11-01 13:42:40 +00:00
Integer
Linker
MC	[mips] Stop reserving register AT and use register scavenger when a scratch	2012-11-03 00:05:43 +00:00
Object	Fix SymbolRef::getAddress implementation for ELF. The 'value' field in symbol table entry should be treated differently for relocatable and relocated files. This patch fixes symbol addresses printed by llvm-nm for executables and shared objects.	2012-09-21 07:08:08 +00:00
Other	Revert the series of commits starting with r166578 which introduced the	2012-11-01 08:07:29 +00:00
Scripts
TableGen	Re-work bit/bits value resolving in tblgen	2012-09-06 23:32:48 +00:00
Transforms	Implement the cost of abnormal x86 instruction lowering as a table.	2012-11-05 19:32:46 +00:00
Unit
Verifier	Assert that dominates is not given a multiple edge. Finding out if we have	2012-08-17 18:21:28 +00:00
YAMLParser
CMakeLists.txt	[CMake] Add llvm-mcmarkup to check-llvm.	2012-11-01 02:13:50 +00:00
lit.cfg	llvm/test/lit.cfg: Don't use mcjit to ppc32 yet, not ready.	2012-11-01 14:28:51 +00:00
lit.site.cfg.in	test: Add a lit config variable to check if LTO is enabled.	2012-10-18 20:43:11 +00:00
Makefile	test: Add a lit config variable to check if LTO is enabled.	2012-10-18 20:43:11 +00:00
Makefile.tests
TestRunner.sh