Jakob Stoklund Olesen 4662a9f270 Allow coalescing with reserved physregs in certain cases: ... When a virtual register has a single value that is defined as a copy of a reserved register, permit that copy to be joined. These virtual register are usually copies of the stack pointer: %vreg75<def> = COPY %ESP; GR32:%vreg75 MOV32mr %vreg75, 1, %noreg, 0, %noreg, %vreg74<kill> MOV32mi %vreg75, 1, %noreg, 8, %noreg, 0 MOV32mi %vreg75<kill>, 1, %noreg, 4, %noreg, 0 CALLpcrel32 ... Coalescing these virtual registers early decreases register pressure. Previously, they were coalesced by RALinScan::attemptTrivialCoalescing after register allocation was completed. The lower register pressure causes the mcinst-lowering-cmp0.ll test case to fail because it depends on linear scan spilling a particular register. I am deleting 2008-08-05-SpillerBug.ll because it is counting the number of instructions emitted, and its revision history shows the 'correct' count being edited many times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128845 91177308-0d34-0410-b5e6-96231b3b80d8		2011-04-04 21:00:03 +00:00
..
Analysis	Region: Allow user control the printing style of the print function.	2011-04-04 07:19:18 +00:00
Archive	Revert PathV2 changes, as sys::fs::unique_file is not finished yet.	2011-03-01 19:50:55 +00:00
AsmParser	Remove PHINode::reserveOperandSpace(). Instead, add a parameter to	2011-03-30 11:28:46 +00:00
Bitcode	Remove PHINode::reserveOperandSpace(). Instead, add a parameter to	2011-03-30 11:28:46 +00:00
CodeGen	Allow coalescing with reserved physregs in certain cases:	2011-04-04 21:00:03 +00:00
CompilerDriver	Build CompilerDriver library.	2011-03-12 22:01:42 +00:00
ExecutionEngine	Instantiate a JITMemoryManager for MCJIT Dyld	2011-03-29 21:03:05 +00:00
Linker	Set the unnamed_addr only when we're creating a new GV in the dest module.	2011-03-29 23:31:06 +00:00
MC	Added support symbolic floating point constants in the MC assembler for Infinity	2011-03-29 21:11:52 +00:00
Object	Start migrating mach-o dumping facilities to the object file out of a	2011-04-03 23:51:47 +00:00
Support	Assorted bugfixes in object file handling:	2011-04-03 22:53:19 +00:00
Target	Fix incorrect alignment for NEON VST2b32_UPD.	2011-04-04 20:35:31 +00:00
Transforms	Remove some support for ReturnInsts with multiple operands, and for	2011-04-04 07:44:02 +00:00
VMCore	Remove some support for ReturnInsts with multiple operands, and for	2011-04-04 07:44:02 +00:00
CMakeLists.txt	Build CompilerDriver library.	2011-03-12 22:01:42 +00:00
Makefile	Add LLVMObject Library.	2010-11-15 03:21:41 +00:00