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100 Commits

Author SHA1 Message Date
Evan Cheng
8e44f0756f Bye bye Pattern ISel, hello DAG ISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25700 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-27 21:26:54 +00:00
Evan Cheng
559806f575 x86 CPU detection and proper subtarget support 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25679 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-27 08:10:46 +00:00
Evan Cheng
97c7fc351e Added preliminary x86 subtarget support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25645 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-26 09:53:06 +00:00
Chris Lattner
2c2c6c61f1 Add explicit #includes of <iostream> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25515 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-22 23:41:00 +00:00
Evan Cheng
98f5dab8a7 Stop doing that accidental commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25474 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-20 01:14:05 +00:00
Evan Cheng
21d5443934 A few more SH{L|R}D peepholes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25473 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-20 01:13:30 +00:00
Evan Cheng
cce47faf52 Didn't mean to commit the last one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25469 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-19 23:27:08 +00:00
Evan Cheng
956044cf03 Added i16 SH{L|R}D patterns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25468 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-19 23:26:24 +00:00
Evan Cheng
bbc8ddbea3 SSE2 floating point load / store patterns. SSE2 fp to int conversion patterns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24886 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-12-20 22:59:51 +00:00
Evan Cheng
56323c761a Only lower SELECT when using DAG based isel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24755 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-12-17 01:22:13 +00:00
Chris Lattner
a763969837 remove some never-completed and now-obsolete code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24671 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-12-12 20:12:20 +00:00
Chris Lattner
c961eea6cb initial step at adding a dag-to-dag isel for X86 backend. Patch contributed 
by Evan Cheng!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24371 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-16 01:54:32 +00:00
Chris Lattner
dbdbf0ce2e Separate X86ISelLowering stuff out from the X86ISelPattern.cpp file. Patch 
contributed by Evan Cheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24358 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-15 00:40:23 +00:00
Chris Lattner
ce8eb0c16b Add a new option to indicate we want the code generator to emit code quickly,not spending tons of time microoptimizing it. This is useful for an -O0style of build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24233 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-08 02:11:51 +00:00
Jim Laskey
b1e1180ca0 1. Use SubtargetFeatures in llc/lli. 
2. Propagate feature "string" to all targets.

3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23192 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-01 21:38:21 +00:00
Nate Begeman
73bfa71524 Remove the X86 and PowerPC Simple instruction selectors; their time has 
passed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22886 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 23:53:15 +00:00
Jeff Cohen
00b16889ab Eliminate all remaining tabs and trailing spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-27 06:12:32 +00:00
Nate Begeman
fb5792f416 Implement Subtarget support 
Implement the X86 Subtarget.

This consolidates the checks for target triple, and setting options based
on target triple into one place.  This allows us to convert the asm printer
and isel over from being littered with "forDarwin", "forCygwin", etc. into
just having the appropriate flags for each subtarget feature controlling
the code for that feature.

This patch also implements indirect external and weak references in the
X86 pattern isel, for darwin.  Next up is to convert over the asm printers
to use this new interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22389 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-12 01:41:54 +00:00
Chris Lattner
81b6ed7ed1 Refactor things a bit to allow the ELF code emitter to run the X86 machine code emitter 
after itself.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22376 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-11 05:17:48 +00:00
Nate Begeman
f63be7d395 First round of support for doing scalar FP using the SSE2 ISA extension and 
XMM registers.  There are many known deficiencies and fixmes, which will be
addressed ASAP.  The major benefit of this work is that it will allow the
LLVM register allocator to allocate FP registers across basic blocks.

The x86 backend will still default to x87 style FP.  To enable this work,
you must pass -enable-sse-scalar-fp and either -sse2 or -sse3 to llc.

An example before and after would be for:
double foo(double *P) { double Sum = 0; int i; for (i = 0; i < 1000; ++i)
                        Sum += P[i]; return Sum; }

The inner loop looks like the following:
x87:
.LBB_foo_1:     # no_exit
        fldl (%esp)
        faddl (%eax,%ecx,8)
        fstpl (%esp)
        incl %ecx
        cmpl $1000, %ecx
        #FP_REG_KILL
        jne .LBB_foo_1  # no_exit

SSE2:
        addsd (%eax,%ecx,8), %xmm0
        incl %ecx
        cmpl $1000, %ecx
        #FP_REG_KILL
        jne .LBB_foo_1  # no_exit


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22340 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-06 18:59:04 +00:00
Chris Lattner
07a9144efe Add support to the X86 backend for emitting ELF files. To use this, we 
currently use: llc t.bc --filetype=obj

This will produce a t.o file which is dumpable with readelf.  Currently
the file produced is empty, but the scaffolding to do more is now in place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22292 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-27 06:30:12 +00:00
Chris Lattner
0431c96cec Refactor the addPassesToEmitAssembly interface into a addPassesToEmitFile 
interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22282 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-25 02:48:37 +00:00
Chris Lattner
6649418598 Enable pattern isel by default 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21898 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-12 19:56:09 +00:00
Misha Brukman
0e0a7a45d3 * Remove trailing whitespace 
* Convert tabs to spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21426 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 23:38:14 +00:00
Nate Begeman
f8b02949e3 Make pattern isel default for ppc 
Add new ppc beta option related to using condition registers
Make pattern isel control flag (-enable-pattern-isel) global and tristate
  0 == off
  1 == on
  2 == target default


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21309 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-15 22:12:16 +00:00
Chris Lattner
18ad19488d Allow the selection-dag based selector to be diabled with -disable-pattern-isel. 
For now, this is the default, as the current selector is missing some big pieces.
To enable the new selector, pass -disable-pattern-isel=false to llc or lli.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19335 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-07 07:50:50 +00:00
Jeff Cohen
1c32f79a82 Revert elimination of global variable hack... still needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19273 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-03 16:34:19 +00:00
Jeff Cohen
40296bdf27 Eliminate the use of the global variable hack in the X86 target that was used 
to get Visual Studio to link in X86.lib to the executables that need it.  There
is another way of doing it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19252 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-02 04:23:12 +00:00
Chris Lattner
3ea78c4276 Use the target triple to pick this target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18830 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-12 17:40:28 +00:00
Chris Lattner
a62869b064 Fix a warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17431 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-02 15:27:57 +00:00
Chris Lattner
7cc372bfc3 Add placeholder variable to make Win32 work, applied for Morten Ofstad 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17406 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 20:10:20 +00:00
Chris Lattner
7d0974b9a0 Improve compatibility with VC++, patch contributed by Morten Ofstad! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17126 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-18 15:54:17 +00:00
Chris Lattner
222b86f694 The person who was planning to add SSE support isn't anymore, so disable 
the -sse* options (to avoid misleading people).

Also, the stack alignment of the target doesn't depend on whether SSE is
eventually implemented, so remove a comment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16860 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-08 22:41:46 +00:00
Reid Spencer
551ccae044 Changes For Bug 352 
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-01 22:55:40 +00:00
Chris Lattner
6f0161aac3 Add -sse[,2,3] arguments to LLC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16018 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-24 08:18:44 +00:00
Chris Lattner
f60b91cbe3 Disable the pattern isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15787 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 23:02:17 +00:00
Chris Lattner
1ab7c5b5e8 Completely disable the pattern isel until it is more substantial. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15380 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:28:02 +00:00
Chris Lattner
cc46c4fcee Remove some (LARGE) abandoned code for the release. If this is ever needed 
again in the future, it can be resurrected out of CVS


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15112 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 21:30:35 +00:00
Chris Lattner
0cf0c37469 Delete the allocate*TargetMachine function, which is now dead . 
The shared command line options are now in a header that makes sense.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14756 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-11 04:17:10 +00:00
Chris Lattner
71d24aab2d Make these format a bit nicer 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14747 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-11 03:27:42 +00:00
Chris Lattner
d36c970a11 Auto-registrate target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14745 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-11 02:48:49 +00:00
Chris Lattner
9a9ca0f06b Remove dead blocks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14564 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-02 05:46:41 +00:00
Chris Lattner
23a53aa9c4 I believe that the code generator now properly handles dead basic blocks. If not, 
this is a bug, and should be fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14476 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-29 07:17:12 +00:00
Chris Lattner
3048373748 Move the IntrinsicLowering header into the CodeGen directory, as per PR346 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14266 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-20 07:49:54 +00:00
Chris Lattner
32305f7763 Fix the fixed stack offset, patch contributed by Vladimir Prus 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14110 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-10 06:19:25 +00:00
Chris Lattner
99c59e8e21 Add support for accurate garbage collection to the LLVM code generators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13696 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:23:35 +00:00
Jakub Staszak
0a8fd30c1b Tablgen files for really simple instruction selector 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 19:34:00 +00:00
Chris Lattner
08bde1870a The X86 backend no longer needs the select lowering pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12578 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:03:46 +00:00
Chris Lattner
12d96a0b4d Add direct support for integer select instructions, though we still don't support 
folding compares into the select yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12553 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 21:22:00 +00:00
Chris Lattner
5abd61f6d9 Add the select lowering pass to get initial support for select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12541 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 18:41:59 +00:00