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2004-05-14Use <pre> instead of <p><tt> combo to decrease space used for code blocks.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13573 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Mention the --tool-args option that Brian and Chris added.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13572 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Make link to HowToSubmitABug.html local instead of to LLVM website.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13571 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14NAME section is supposed to have a brief description, for apropos(1) & whatis(1)Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13570 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14This seems like as good a place as any to keep POD files.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13569 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Don't keep track of references to LLVM BasicBlocks while emitting; useBrian Gaeke
MachineBasicBlocks instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13568 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Support MachineBasicBlock operands on RawFrm instructions.Brian Gaeke
Get rid of separate numbering for LLVM BasicBlocks; use the automatically generated MachineBasicBlock numbering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13567 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-14Generate branch machine instructions with MachineBasicBlock operands instead ofBrian Gaeke
LLVM BasicBlock operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13566 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13This was not meant to be committedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13565 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Fix a nasty bug that caused us to unroll EXTREMELY large loops due to overflowChris Lattner
in the size calculation. This is not something you want to see: Loop Unroll: F[main] Loop %no_exit Loop Size = 2 Trip Count = 2147483648 - UNROLLING! The problem was that 2*2147483648 == 0. Now we get: Loop Unroll: F[main] Loop %no_exit Loop Size = 2 Trip Count = 2147483648 - TOO LARGE: 4294967296>100 Thanks to some anonymous person playing with the demo page that repeatedly caused zion to go into swapping land. That's one way to ensure you'll get a quick bugfix. :) Testcase here: Transforms/LoopUnroll/2004-05-13-DontUnrollTooMuch.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13564 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13New testcase that used to cause the unroller to try to unroll the loop 2G ↵Chris Lattner
times. :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13563 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Specify units in padding length.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13560 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Make page HTML-4.01 compliant (& => &amp; in URL).Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13559 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Two more improvements for null pointer handling: storing a null pointerChris Lattner
and passing a null pointer into a function. For this testcase: void %test(int** %X) { store int* null, int** %X call void %test(int** null) ret void } we now generate this: test: sub %ESP, 12 mov %EAX, DWORD PTR [%ESP + 16] mov DWORD PTR [%EAX], 0 mov DWORD PTR [%ESP], 0 call test add %ESP, 12 ret instead of this: test: sub %ESP, 12 mov %EAX, DWORD PTR [%ESP + 16] mov %ECX, 0 mov DWORD PTR [%EAX], %ECX mov %EAX, 0 mov DWORD PTR [%ESP], %EAX call test add %ESP, 12 ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13558 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Second half of my fixed-sized-alloca patch. This folds the LEA to computeChris Lattner
the alloca address into common operations like loads/stores. In a simple testcase like this (which is just designed to excersize the alloca A, nothing more): int %test(int %X, bool %C) { %A = alloca int store int %X, int* %A store int* %A, int** %G br bool %C, label %T, label %F T: call int %test(int 1, bool false) %V = load int* %A ret int %V F: call int %test(int 123, bool true) %V2 = load int* %A ret int %V2 } We now generate: test: sub %ESP, 12 mov %EAX, DWORD PTR [%ESP + 16] mov %CL, BYTE PTR [%ESP + 20] *** mov DWORD PTR [%ESP + 8], %EAX mov %EAX, OFFSET G lea %EDX, DWORD PTR [%ESP + 8] mov DWORD PTR [%EAX], %EDX test %CL, %CL je .LBB2 # PC rel: F .LBB1: # T mov DWORD PTR [%ESP], 1 mov DWORD PTR [%ESP + 4], 0 call test *** mov %EAX, DWORD PTR [%ESP + 8] add %ESP, 12 ret .LBB2: # F mov DWORD PTR [%ESP], 123 mov DWORD PTR [%ESP + 4], 1 call test *** mov %EAX, DWORD PTR [%ESP + 8] add %ESP, 12 ret Instead of: test: sub %ESP, 20 mov %EAX, DWORD PTR [%ESP + 24] mov %CL, BYTE PTR [%ESP + 28] *** lea %EDX, DWORD PTR [%ESP + 16] *** mov DWORD PTR [%EDX], %EAX mov %EAX, OFFSET G mov DWORD PTR [%EAX], %EDX test %CL, %CL *** mov DWORD PTR [%ESP + 12], %EDX je .LBB2 # PC rel: F .LBB1: # T mov DWORD PTR [%ESP], 1 mov %EAX, 0 mov DWORD PTR [%ESP + 4], %EAX call test *** mov %EAX, DWORD PTR [%ESP + 12] *** mov %EAX, DWORD PTR [%EAX] add %ESP, 20 ret .LBB2: # F mov DWORD PTR [%ESP], 123 mov %EAX, 1 mov DWORD PTR [%ESP + 4], %EAX call test *** mov %EAX, DWORD PTR [%ESP + 12] *** mov %EAX, DWORD PTR [%EAX] add %ESP, 20 ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13557 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Substantially improve code generation for address exposed locals (aka fixedChris Lattner
sized allocas in the entry block). Instead of generating code like this: entry: reg1024 = ESP+1234 ... (much later) *reg1024 = 17 Generate code that looks like this: entry: (no code generated) ... (much later) t = ESP+1234 *t = 17 The advantage being that we DRAMATICALLY reduce the register pressure for these silly temporaries (they were all being spilled to the stack, resulting in very silly code). This is actually a manual implementation of rematerialization :) I have a patch to fold the alloca address computation into loads & stores, which will make this much better still, but just getting this right took way too much time and I'm sleepy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13554 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Reduce line length to about 80 chars.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13538 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13Insert spacing between the table and the next section.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13523 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-13* Use stylesheets for table borders so we factor out the formatting and canMisha Brukman
adjust it much easier. Also changed border to gray to fit into the current color scheme. * Convert < and > to &lt; and &gt;, respectively. * Wrap long lines at 80 cols git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13522 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Fix a comment.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13518 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Fix a really nasty bug from my changes on Monday to PHIElim. These changesChris Lattner
broke obsequi and a lot of other things. It all boiled down to MBB being overloaded in an inner scope and me confusing it with the one in the outer scope. Ugh! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13517 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Break lines at 80 cols; eliminate extra space caused by a single <p> tag on aMisha Brukman
line by itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13516 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Start NextMBBNumber out at zero.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13515 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Add non-const MachineBasicBlock::getParent() accessor method.Brian Gaeke
MBBs start out as #-1. When a MBB is added to a MachineFunction, it gets the next available unique MBB number. If it is removed from a MachineFunction, it goes back to being #-1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13514 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Add a NextMBBNumber field w/ incrementing accessor method, forBrian Gaeke
function-level unique numbering of MBBs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13513 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Add a Number field w/ accessor method, for function-level unique numberingBrian Gaeke
of MBBs. Add non-const MachineBasicBlock::getParent() accessor method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13512 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Make the subsubsections stand out a bit moreChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13511 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12These images have been moved to img/Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13510 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Use the images in the img/ directory.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13509 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Finally, switch to a stylesheet that makes the documentation easier on the eyesMisha Brukman
and consistent with the LLVM website. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13508 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Centralize images in this dir; add lines.gif from website for consistentMisha Brukman
formatting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13507 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Make file use stylesheets and be HTML-4.01 (Strict)-compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13506 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Made document HTML-4.01 (Strict)-compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13505 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Make file standard-compliant once again.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13504 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Made file comply with HTML-4.01 (Strict)Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13503 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Turn the block extractor on by default now that it basically works, ↵Chris Lattner
eliminating the option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13502 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Made file HTML-4.01 (Strict)-compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13501 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Made to be HTML-4.01 (Strict)-compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13500 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Made to be HTML-4.01 (Strict) -compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13499 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Add proper footer since this file is HTML-4.01 compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13498 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Make document HTML-4.01 (Strict) compliant.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13497 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Fix grammar: remove `the' before LLVM.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13496 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12* Make the document format follow the stringent purple standards (like the restMisha Brukman
of the documentation) * Do not make the link text be the link itself, use some keywords * Make doc use stylesheets and HTML markup for lists instead of definitions * Shorten page by not making multiple lines per link with description + link of the same name as the target git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13495 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Pass boolean constants into function calls more efficiently, generating:Chris Lattner
mov DWORD PTR [%ESP + 4], 1 instead of: mov %EAX, 1 mov DWORD PTR [%ESP + 4], %EAX git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13494 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Do not pass in the same argument to the extracted function more than once, andChris Lattner
give the extracted function a more useful name than just foo_code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13493 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Check to see if all blocks are extractible first.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13491 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Implement support for code extracting basic blocks that have a returnChris Lattner
instruction in them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13490 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Implement splitting of PHI nodes, allowing block extraction of BB's that haveChris Lattner
PHI node entries from multiple outside-the-region blocks. This also fixes extraction of the entry block in a function. Yaay. This has successfully block extracted all (but one) block from the score_move function in obsequi (out of 33). Hrm, I wonder which block the bug is in. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13489 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12* Pull some code out into the definedInRegion/definedInCaller methodsChris Lattner
* Add a stub for the severSplitPHINodes which will allow us to bbextract bb's with PHI nodes in them soon. * Remove unused arguments from findInputsOutputs * Dramatically simplify the code in findInputsOutputs. In particular, nothing really cares whether or not a PHI node is using something. * Move moveCodeToFunction to after emitCallAndSwitchStatement as that's the order they get called. * Fix a bug where we would code extract a region that included a call to vastart. Like 'alloca', calls to vastart must stay in the function that they are defined in. * Add some comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13482 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-12Generate substantially better code when there are a limited number of exitsChris Lattner
from the extracted region. If the return has 0 or 1 exit blocks, the new function returns void. If it has 2 exits, it returns bool, otherwise it returns a ushort as before. This allows us to use a conditional branch instruction when there are two exit blocks, as often happens during block extraction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13481 91177308-0d34-0410-b5e6-96231b3b80d8
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