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1436 Commits

Author SHA1 Message Date
Chris Lattner 1563983d81 Fix some serious bugs in the cmov descriptions, which didn't cause a problem because 
we never generated them

Make indentation a bit more consistent

llvm-svn: 12549
 2004-03-30 20:18:02 +00:00
Chris Lattner 0048e574fb Fix a fairly major performance problem. If a PHI node had a constant as 
an incoming value from a block, the selector would evaluate the constant
at the TOP of the block instead of at the end of the block.  This made the
live range for the constant span the entire block, increasing register
pressure needlessly.

llvm-svn: 12542
 2004-03-30 19:10:12 +00:00
Chris Lattner 1a0e9ac2f5 Add the select lowering pass to get initial support for select instructions 
llvm-svn: 12541
 2004-03-30 18:41:59 +00:00
Brian Gaeke fd02378d3e Don't warn about a null live range if the Value is a ConstantIntegral. 
Otherwise, if you're in debugging mode, you get warnings for (apparently)
every immediate constant in the function during reg. allocation.

llvm-svn: 12538
 2004-03-29 21:58:41 +00:00
Chris Lattner ba6641d598 Fix PR299: [Sparc] Code generator asserts on alloc of zero size type 
llvm-svn: 12504
 2004-03-19 04:21:43 +00:00
Chris Lattner 6ca9b89abb Malloc doesn't kill a load. This patch need not go into 1.2 though. 
llvm-svn: 12500
 2004-03-18 17:01:26 +00:00
Chris Lattner dc47e27188 Fix a really nasty bug that was breaking ijpeg in LLC mode. We were incorrectly 
folding load instructions into other instructions across free instruction
boundaries.  Perhaps this will also fix the other strange failures?

llvm-svn: 12494
 2004-03-18 06:29:54 +00:00
Brian Gaeke d962dd5528 The .type directive on Solaris uses the # character instead of @. 
llvm-svn: 12454
 2004-03-16 22:52:04 +00:00
Brian Gaeke 3fb0e203cd Fix bug in zero-extending of shorts. 
llvm-svn: 12453
 2004-03-16 22:45:42 +00:00
Brian Gaeke ae22ce5370 Add UMULrr and SMULrr instructions. 
llvm-svn: 12452
 2004-03-16 22:37:13 +00:00
Brian Gaeke ae0ca8baa6 Use ! for comment char; it works in both Solaris as and GAS. 
llvm-svn: 12451
 2004-03-16 22:37:12 +00:00
Brian Gaeke 67fcefbfef Make getClass more robust by adding cLong. 
Add handling for Mul instruction.

llvm-svn: 12450
 2004-03-16 22:37:11 +00:00
Alkis Evlogimenos 804dc659b6 Add LAHF instruction 
llvm-svn: 12424
 2004-03-15 17:20:14 +00:00
Alkis Evlogimenos 4837f6c0d9 Another API change to MRegisterInfo::foldMemoryOperand. Instead of a 
MachineBasicBlock::iterator take a MachineInstr*.

llvm-svn: 12392
 2004-03-14 20:14:27 +00:00
Alkis Evlogimenos 48da2f8a6d Change MRegisterInfo::foldMemoryOperand to return the folded 
instruction to make the API more flexible.

llvm-svn: 12386
 2004-03-14 07:19:51 +00:00
Chris Lattner 699aa70f0c It helps if I save the file. :) 
llvm-svn: 12357
 2004-03-13 00:24:52 +00:00
Chris Lattner 071a5e5649 Rename the intrinsic enum values for llvm.va_* from Intrinsic::va_* to 
Intrinsic::va*.  This avoid conflicting with macros in the stdlib.h file.

llvm-svn: 12356
 2004-03-13 00:24:00 +00:00
Brian Gaeke 1694dafece Make -print-machineinstrs show us the code both before and after reg. alloc. 
llvm-svn: 12344
 2004-03-12 21:19:08 +00:00
Alkis Evlogimenos 9884bda541 Add support for a wider range of CMOV instructions. 
llvm-svn: 12336
 2004-03-12 17:59:56 +00:00
Chris Lattner 65a64e1e7a ADd support for select instructions 
llvm-svn: 12316
 2004-03-12 05:52:14 +00:00
Misha Brukman 505a0838f6 Move implementations of functions here, which avoids #including <cstdlib> in the 
header file and all those who #include it.

llvm-svn: 12297
 2004-03-11 23:52:43 +00:00
Brian Gaeke 14e98b9d96 Get rid of the abort in PhyRegAlloc::finishSavingState(). 
Make an explicit call to it from runOnFunction() if we know we're supposed to
write into the global. This is lame (esp. the const_cast), but it solves
the problem.

llvm-svn: 12291
 2004-03-11 19:46:30 +00:00
Brian Gaeke c028910d25 Give pass a name 
llvm-svn: 12290
 2004-03-11 19:23:15 +00:00
Misha Brukman d313bdfa43 Fix compilation on Sparc: assert(0) => abort() 
llvm-svn: 12289
 2004-03-11 19:08:24 +00:00
Brian Gaeke 5935e0a002 In PhyRegAlloc::saveState(), dump Arguments' saved-state, and try to 
make the output more compact.

Divorce state-saving from the doFinalization method; for some reason it's not
getting called when I want it to, at Reoptimizer time. Put the guts in
PhyRegAlloc::finishSavingState(). Put an abort() in it so that I can be really
really sure that it's getting called.

Update comments.

llvm-svn: 12286
 2004-03-11 06:45:52 +00:00
Brian Gaeke 44a540e869 Remove ghostly directory from the build 
llvm-svn: 12285
 2004-03-11 04:42:41 +00:00
Brian Gaeke 0e09916d60 Move all the SaveState options and stuff inton one spot at the top of the file. 
De-constify SaveStateToModule; we have to set both it and SaveRegAllocState
explicitly in the reoptimizer.
Make SaveRegAllocState an 'external location' option.

llvm-svn: 12278
 2004-03-10 22:21:03 +00:00
Brian Gaeke f819263cc1 Only call verifySavedState if SaveRegAllocState is set AND debugging flag is on. 
llvm-svn: 12277
 2004-03-10 22:01:59 +00:00
Alkis Evlogimenos f234284986 Check if printing of implicit uses is required for all types of shift 
instructions.

llvm-svn: 12258
 2004-03-09 06:10:15 +00:00
Brian Gaeke 3a27bd889b Hmm, who left this sitting around in my tree 
llvm-svn: 12255
 2004-03-09 04:49:13 +00:00
Alkis Evlogimenos 8a3f2f3600 Differentiate between extended precision floats (80-bit) and double precision floats (64-bit) 
llvm-svn: 12254
 2004-03-09 03:37:54 +00:00
Alkis Evlogimenos 8ac958bf43 Use newly added API to emit bytes for instructions that gas misassembles 
llvm-svn: 12253
 2004-03-09 03:35:34 +00:00
Alkis Evlogimenos 508b459d12 Add emitInstruction() API so that we can get the bytes of a simple instruction 
llvm-svn: 12252
 2004-03-09 03:34:53 +00:00
Alkis Evlogimenos a7c2da3af5 Constify things a bit 
llvm-svn: 12251
 2004-03-09 03:30:12 +00:00
Brian Gaeke d734587436 Change PhyRegAlloc::saveStateForValue()'s arg type to deal with 
AllocInfo.Instruction becoming an int.

llvm-svn: 12247
 2004-03-08 23:22:03 +00:00
Brian Gaeke f0a73a3f42 Save argument list alloc state by recording it as the operands of Instruction 
#-1. Other minor changes to deal with AllocInfo.Instruction becoming an int.

llvm-svn: 12246
 2004-03-08 23:22:02 +00:00
Brian Gaeke 0be7ea7289 Make AllocInfo's Instruction an int, so that we can overload it for arguments. 
(Instruction #-1's operands = argument list).

llvm-svn: 12245
 2004-03-08 23:22:01 +00:00
Chris Lattner 98502aae76 Avoid allocating special registers a bit more robustly 
llvm-svn: 12207
 2004-03-08 03:48:07 +00:00
Chris Lattner 653e662a93 Implement folding explicit load instructions into binary operations. For a 
testcase like this:

int %test(int* %P, int %A) {
        %Pv = load int* %P
        %B = add int %A, %Pv
        ret int %B
}

We now generate:
test:
        mov %ECX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP + 8]
        add %EAX, DWORD PTR [%ECX]
        ret

Instead of:
test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, DWORD PTR [%ESP + 8]
        mov %EAX, DWORD PTR [%EAX]
        add %EAX, %ECX
        ret

... saving one instruction, and often a register.  Note that there are a lot
of other instructions that could use this, but they aren't handled.  I'm not
really interested in adding them, but mul/div and all of the FP instructions
could be supported as well if someone wanted to add them.

llvm-svn: 12204
 2004-03-08 01:58:35 +00:00
Chris Lattner 1dd6afe6a2 Rearrange and refactor some code. No functionality changes. 
llvm-svn: 12203
 2004-03-08 01:18:36 +00:00
Alkis Evlogimenos d6f62ba55b Add memory operand version of conditional move. 
llvm-svn: 12190
 2004-03-07 03:19:11 +00:00
Brian Gaeke 4e0669cef0 Support return values of basic integer types. 
Emit RETL instruction to return instead of funny JMPL.
Fix indentation.

llvm-svn: 12186
 2004-03-06 05:32:28 +00:00
Brian Gaeke c65b97d4f6 Sort stanzas into Sparc V8 book page number order. 
Add RET, RETL.  Rename SAVE, RESTORE & JMPL for consistency.

llvm-svn: 12185
 2004-03-06 05:32:13 +00:00
Brian Gaeke 84b4c9208d Hack it so we do not try to allocate values to G0. 
llvm-svn: 12184
 2004-03-06 05:31:32 +00:00
Brian Gaeke 901cfa9e2e Make prolog align stack properly. Make epilog not touch any registers. 
llvm-svn: 12183
 2004-03-06 05:31:21 +00:00
Brian Gaeke 5a1c7a8be3 Emit register names in lowercase, as required by the assembler. 
llvm-svn: 12182
 2004-03-06 05:30:21 +00:00
Brian Gaeke 639b04aca3 Teach getRegClassForType where to find FP registers 
llvm-svn: 12180
 2004-03-06 03:54:13 +00:00
Brian Gaeke 0c76d1146f Asm output is looking a lot better; not correct for all operands yet though. 
llvm-svn: 12143
 2004-03-05 08:39:09 +00:00
Brian Gaeke 9c609df3c9 Support -print-machineinstrs 
llvm-svn: 12124
 2004-03-04 19:22:16 +00:00
Brian Gaeke 8351d8c1a8 make -print-machineinstrs work for both SparcV9 and X86 
llvm-svn: 12122
 2004-03-04 19:16:23 +00:00