Hal Finkel fe47bf8fa0 PPC: Implement base pointer and stack realignment ... This builds on some frame-lowering code that has existed since 2005 (r24224) but was disabled in 2008 (r48188) because it needed base pointer support to function correctly. This implementation follows the strategy suggested by Dale Johannesen in r48188 where the following comment was added: This does not currently work, because the delta between old and new stack pointers is added to offsets that reference incoming parameters after the prolog is generated, and the code that does that doesn't handle a variable delta. You don't want to do that anyway; a better approach is to reserve another register that retains to the incoming stack pointer, and reference parameters relative to that. And now we do exactly that. If we don't need a frame pointer, then we use r31 as a base pointer. If we do need a frame pointer, then we use r30 as a base pointer. The base pointer retains the value of the stack pointer before it was decremented in the prologue. We then use the base pointer to resolve all negative frame indicies. The basic scheme follows that for base pointers in the X86 backend. We use a base pointer when we need to dynamically realign the incoming stack pointer. This currently applies only to static objects (dynamic allocas with large alignments, and base-pointer support in SjLj lowering will come in future commits). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186478 91177308-0d34-0410-b5e6-96231b3b80d8		2013-07-17 00:45:52 +00:00
..
Analysis	Add newlines at end of test files, no functionality change	2013-07-13 22:00:58 +00:00
Assembler	Fix test: It was missing run lines and llvm-dis has no -disable-verify option.	2013-07-03 16:27:55 +00:00
Bindings/Ocaml	Fix %t typo in Ocaml bindings test.	2013-07-10 18:55:06 +00:00
Bitcode
BugPoint
CodeGen	PPC: Implement base pointer and stack realignment	2013-07-17 00:45:52 +00:00
DebugInfo	Further simplify test case from r186119/r186035.	2013-07-15 22:28:45 +00:00
ExecutionEngine	Add newlines at end of test files, no functionality change	2013-07-13 22:00:58 +00:00
Feature	Add a new function attribute 'cold' to functions.	2013-05-24 12:26:52 +00:00
FileCheck	Add new directive called CHECK-LABEL to FileCheck.	2013-07-12 14:51:05 +00:00
Instrumentation	[msan] Unpoison stack allocations and undef values in blacklisted functions.	2013-07-03 14:39:14 +00:00
Integer
JitListener
Linker	Extend RemapInstruction and friends to take an optional new parameter, a ValueMaterializer.	2013-05-28 15:17:05 +00:00
MC	ARM: Add support for the Thumb2 PLI alternate literal form.	2013-07-16 21:52:34 +00:00
Object	llvm/test/Object/ar-create.test: Relax a CHECK line to satisfy localized message catalogue.	2013-07-16 23:17:22 +00:00
Other	XFAIL this test on mingw.	2013-07-16 19:20:29 +00:00
TableGen
tools	Revert: Fix wrong code offset for unwind code SET_FPREG.	2013-07-08 04:48:34 +00:00
Transforms	When the inliner merges allocas, it must keep the larger alignment	2013-07-16 17:10:55 +00:00
Unit
Verifier	Also verify llvm.compiler_used.	2013-04-22 15:16:51 +00:00
YAMLParser
CMakeLists.txt	llvm/test/CMakeLists.txt: Add llvm-cov in "check-clang".	2013-07-08 08:44:36 +00:00
lit.cfg	Add the ability to use guarded malloc when running llvm lit tests.	2013-07-11 23:36:57 +00:00
lit.site.cfg.in	Allow host triple to be correctly overridden in CMake builds	2013-05-04 07:36:23 +00:00
Makefile	add polly to check-all	2013-05-20 18:49:15 +00:00
Makefile.tests
TestRunner.sh