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Author SHA1 Message Date
Chris Lattner
a30d4be57d Use a custom expander to compile this: 
long %test4(double %X) {
        %tmp.1 = cast double %X to long         ; <long> [#uses=1]
        ret long %tmp.1
}

to this:

_test4:
        sub %ESP, 12
        fld QWORD PTR [%ESP + 16]
        fistp QWORD PTR [%ESP]
        mov %EDX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP]
        add %ESP, 12
        ret

instead of this:

_test4:
        sub %ESP, 28
        fld QWORD PTR [%ESP + 32]
        fstp QWORD PTR [%ESP]
        call ___fixdfdi
        add %ESP, 28
        ret

llvm-svn: 22549
 2005-07-29 00:40:01 +00:00
Andrew Lenharth
0fcc129f80 support bsr, and more .td simplification 
llvm-svn: 22543
 2005-07-28 18:14:47 +00:00
Andrew Lenharth
5a08d95904 get lazy JITing working. Some of shootout runs now 
llvm-svn: 22538
 2005-07-28 12:45:20 +00:00
Chris Lattner
5d02e3a15e Eliminate an extra copy from R1 that Nate noticed on function calls that 
have to write arguments to the stack

llvm-svn: 22536
 2005-07-28 05:23:43 +00:00
Chris Lattner
a9dac1cd7a Specify the correct number of operands 
llvm-svn: 22535
 2005-07-28 04:42:11 +00:00
Nate Begeman
b125feb99f Fold constant adds into loads and stores to frame indices. 
For the following code:
double %ext(int %A.0__, long %A.1__) {
        %A_addr = alloca %typedef.DComplex              ; <%typedef.DComplex*> [#uses=2]
        %tmp.1 = cast %typedef.DComplex* %A_addr to int*                ; <int*> [#uses=1]
        store int %A.0__, int* %tmp.1
        %tmp.2 = getelementptr %typedef.DComplex* %A_addr, int 0, uint 1                ; <double*> [#uses=2]
        %tmp.3 = cast double* %tmp.2 to long*           ; <long*> [#uses=1]
        store long %A.1__, long* %tmp.3
        %tmp.5 = load double* %tmp.2            ; <double> [#uses=1]
        ret double %tmp.5
}

We now generate:
_ext:
.LBB_ext_0:     ;
        stw r3, -12(r1)
        stw r4, -8(r1)
        stw r5, -4(r1)
        lfd f1, -8(r1)
        blr

Instead of:
_ext:
.LBB_ext_0:     ;
        stw r3, -12(r1)
        addi r2, r1, -12
        stw r4, 4(r2)
        stw r5, 8(r2)
        lfd f1, 4(r2)
        blr

This also fires hundreds of times on MultiSource.

llvm-svn: 22533
 2005-07-28 03:02:05 +00:00
Nate Begeman
d230bf7242 Fix some comments 
llvm-svn: 22530
 2005-07-27 23:11:27 +00:00
Jeff Cohen
bd51ec7461 Eliminate all remaining tabs and trailing spaces. 
llvm-svn: 22523
 2005-07-27 06:12:32 +00:00
Nate Begeman
54792213a7 Implement the optimization for the Red Zone on Darwin. This removes the 
unnecessary SP manipulation in leaf routines that don't need it.

llvm-svn: 22522
 2005-07-27 06:06:29 +00:00
Chris Lattner
d9239c4ae0 fix some warnings when compiled with 32-bit hosts 
llvm-svn: 22521
 2005-07-27 05:58:01 +00:00
Jeff Cohen
81980781a1 Eliminate tabs and trailing spaces. 
llvm-svn: 22520
 2005-07-27 05:53:44 +00:00
Chris Lattner
9c98c4366a add a note about the red zone 
llvm-svn: 22518
 2005-07-26 19:07:51 +00:00
Chris Lattner
2e2dd83e7d Wrap some long lines, fix emission of weak global variables 
llvm-svn: 22517
 2005-07-26 19:03:27 +00:00
Nate Begeman
cd48821a69 Update the PPC readme 
llvm-svn: 22516
 2005-07-26 18:59:06 +00:00
Nate Begeman
19014db53f Fix an optimization put in for accessing static globals. This obviates 
the need to build PIC.

llvm-svn: 22512
 2005-07-25 21:15:28 +00:00
Andrew Lenharth
14ff2e9791 fix compile error 
llvm-svn: 22508
 2005-07-23 07:46:48 +00:00
Chris Lattner
dd14de5a1e PowerPC no-pic code is not quite ready for prime-time 
llvm-svn: 22507
 2005-07-22 22:58:34 +00:00
Andrew Lenharth
b6f81cea2f Handle more imm forms, and load small negative i32 constants without hitting memory (should do the same for arbitrary zero extended small negative constants) 
llvm-svn: 22505
 2005-07-22 22:24:01 +00:00
Andrew Lenharth
5732bc768f finally found the gcc defined constants 
llvm-svn: 22502
 2005-07-22 21:00:30 +00:00
Andrew Lenharth
ba955f96e3 Alpha JIT (beta) 
llvm-svn: 22500
 2005-07-22 20:52:16 +00:00
Andrew Lenharth
653f21b2cd simpilfy instruction encoding (and make the lines way shorter, aka Misha happification) 
llvm-svn: 22499
 2005-07-22 20:50:29 +00:00
Andrew Lenharth
0e1c0e7c79 update interface 
llvm-svn: 22498
 2005-07-22 20:49:37 +00:00
Nate Begeman
7259cc60c4 Support building non-PIC 
Remove the LoadHiAddr pseudo-instruction.
Optimization of stores to and loads from statics.
Force JIT to use new non-PIC codepaths.

llvm-svn: 22494
 2005-07-21 20:44:43 +00:00
Chris Lattner
1766305e60 revert to using 4-byte alignment for doubles, as specified by the ABI 
llvm-svn: 22493
 2005-07-21 19:17:18 +00:00
Nate Begeman
95421ab212 Support assembling fsqrt on darwin. This will be implemented better when 
PowerPC gets subtarget support up.

llvm-svn: 22489
 2005-07-21 01:25:49 +00:00
Nate Begeman
ae843fcefe Generate mfocrf when targeting g5. Generate fsqrt/fsqrts when targetin g5. 
8-byte align doubles.

llvm-svn: 22486
 2005-07-20 22:42:00 +00:00
Nate Begeman
b83789d611 Integrate SelectFPExpr into SelectExpr. This gets PPC32 closer to being 
automatically generated from a target description.

llvm-svn: 22470
 2005-07-19 16:51:05 +00:00
Reid Spencer
40c5ebe4eb For: memory operations -> stores 
This is the first incremental patch to implement this feature. It adds no
functionality to LLVM but setup up the information needed from targets in
order to implement the optimization correctly. Each target needs to specify
the maximum number of store operations for conversion of the llvm.memset,
llvm.memcpy, and llvm.memmove intrinsics into a sequence of store operations.
The limit needs to be chosen at the threshold of performance for such an
optimization (generally smallish). The target also needs to specify whether
the target can support unaligned stores for multi-byte store operations.
This helps ensure the optimization doesn't generate code that will trap on
an alignment errors.
More patches to follow.

llvm-svn: 22468
 2005-07-19 04:52:44 +00:00
Nate Begeman
160c12d896 Teach the legalizer how to promote SINT_TO_FP to a wider SINT_TO_FP that 
the target natively supports.  This eliminates some special-case code from
the x86 backend and generates better code as well.

For an i8 to f64 conversion, before & after:

_x87 before:
        subl $2, %esp
        movb 6(%esp), %al
        movsbw %al, %ax
        movw %ax, (%esp)
        filds (%esp)
        addl $2, %esp
        ret

_x87 after:
        subl $2, %esp
        movsbw 6(%esp), %ax
        movw %ax, (%esp)
        filds (%esp)
        addl $2, %esp
        ret

_sse before:
        subl $12, %esp
        movb 16(%esp), %al
        movsbl %al, %eax
        cvtsi2sd %eax, %xmm0
        addl $12, %esp
        ret

_sse after:
        subl $12, %esp
        movsbl 16(%esp), %eax
        cvtsi2sd %eax, %xmm0
        addl $12, %esp
        ret

llvm-svn: 22452
 2005-07-16 02:02:34 +00:00
Nate Begeman
7a1bc7318d Teach the register allocator that movaps is also a move instruction 
llvm-svn: 22451
 2005-07-16 02:00:20 +00:00
Nate Begeman
c93c1c5148 A couple more darwinisms 
llvm-svn: 22450
 2005-07-16 01:59:47 +00:00
Chris Lattner
79573b1a93 Remove all knowledge of UINT_TO_FP from the X86 backend, relying on the 
legalizer to eliminate them.  With this comes the expected code quality
improvements, such as, for this:

double foo(unsigned short X) { return X; }

we now generate this:

_foo:
        subl $4, %esp
        movzwl 8(%esp), %eax
        movl %eax, (%esp)
        fildl (%esp)
        addl $4, %esp
        ret

instead of this:

_foo:
        subl $4, %esp
        movw 8(%esp), %ax
        movzwl %ax, %eax   ;; Load not folded into this.
        movl %eax, (%esp)
        fildl (%esp)
        addl $4, %esp
        ret

-Chris

llvm-svn: 22449
 2005-07-16 00:28:20 +00:00
Nate Begeman
957e0e7c9e Get closer to fully working scalar FP in SSE regs. This gets singlesource 
working, and Olden/power.

llvm-svn: 22441
 2005-07-15 00:38:55 +00:00
Nate Begeman
8c2dadc92e Add support for printing the sse scalar comparison instruction mnemonics. 
llvm-svn: 22440
 2005-07-14 22:52:25 +00:00
John Criswell
64f658a2f7 Fixed PR#596: 
Add parenthesis around the value being negated; that way, if the value
begins with a minus sign (e.g. negative integer), we won't generate a
C predecrement operator by mistake.

llvm-svn: 22437
 2005-07-14 19:41:16 +00:00
Nate Begeman
7330d9cd80 Check in the last of the darwin-specific code necessary to get shootout 
working before modifying the asm printer to use the subtarget info.

llvm-svn: 22408
 2005-07-12 18:34:58 +00:00
Nate Begeman
be4b78ff53 Remove some code that moved to the generic asm printer a long time ago. 
llvm-svn: 22407
 2005-07-12 18:34:15 +00:00
Andrew Lenharth
062b70fd54 Fix povray and minor cleanups 
llvm-svn: 22397
 2005-07-12 04:20:52 +00:00
Jeff Cohen
13c63ee283 I don't know how this ever compiled with gcc, but VC++ correctly rejects it. 
llvm-svn: 22394
 2005-07-12 02:59:38 +00:00
Nate Begeman
4d96f2769c Clean up the TargetSubtarget class a bit, removing an unnecessary argument 
to the constructor.

llvm-svn: 22392
 2005-07-12 02:41:19 +00:00
Chris Lattner
b383dec36f Minor changes to improve comments and fix the build on _WIN32 systems. 
llvm-svn: 22391
 2005-07-12 02:36:10 +00:00
Chris Lattner
855fe2ea0c Add a note 
llvm-svn: 22390
 2005-07-12 02:35:36 +00:00
Nate Begeman
626fb671c8 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.

llvm-svn: 22389
 2005-07-12 01:41:54 +00:00
Nate Begeman
faf9b5b763 Commit some pending darwin changes before subtarget support. 
llvm-svn: 22388
 2005-07-12 01:37:28 +00:00
Chris Lattner
ac2bba6862 fix a warning 
llvm-svn: 22385
 2005-07-11 22:46:18 +00:00
Chris Lattner
cace336deb Output .size directives to tell the assembler the size of each function. 
llvm-svn: 22381
 2005-07-11 06:29:14 +00:00
Chris Lattner
af83621722 Fix crazy indentation 
llvm-svn: 22380
 2005-07-11 06:25:47 +00:00
Chris Lattner
a556fc183f Refactor things a bit to allow the ELF code emitter to run the X86 machine code emitter 
after itself.

llvm-svn: 22376
 2005-07-11 05:17:48 +00:00
Chris Lattner
41dbb3993d Remove prototype for non-existant function 
llvm-svn: 22372
 2005-07-11 04:20:55 +00:00
Chris Lattner
ffaf40a143 Change *EXTLOAD to use an VTSDNode operand instead of being an MVTSDNode. 
This is the last MVTSDNode.

This allows us to eliminate a bunch of special case code for handling
MVTSDNodes.

Also, remove some uses of dyn_cast that should really be cast (which is
cheaper in a release build).

llvm-svn: 22368
 2005-07-10 01:56:13 +00:00
Chris Lattner
273b81e0c0 Change TRUNCSTORE to use a VTSDNode operand instead of being an MVTSTDNode 
llvm-svn: 22366
 2005-07-10 00:29:18 +00:00
Nate Begeman
70532b9f00 Add support for assembling .s files on mac os x for intel 
Add support for running bugpoint on mac os x for intel

llvm-svn: 22351
 2005-07-08 00:23:26 +00:00
Andrew Lenharth
262477edde clean up prolouge and epilouge 
llvm-svn: 22346
 2005-07-07 19:52:58 +00:00
Chris Lattner
e45dd7850d Restore some code that was accidentally removed by Nate's patch yesterday. 
This fixes the regressions from last night.

llvm-svn: 22344
 2005-07-07 17:12:53 +00:00
Nate Begeman
667588d524 Fix a typo in my checkin today that caused regressions. Oops! 
llvm-svn: 22341
 2005-07-07 06:32:01 +00:00
Nate Begeman
e5314eb2c2 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

llvm-svn: 22340
 2005-07-06 18:59:04 +00:00
Chris Lattner
199560c668 Make several cleanups to Andrews varargs change: 
1. Pass Value*'s into lowering methods so that the proper pointers can be
   added to load/stores from the valist
2. Intrinsics that return void should only return a token chain, not a token
   chain/retval pair.
3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone.
4. Now that we have Value*'s available in the lowering methods, pass them
   into any load/stores from the valist that are emitted

llvm-svn: 22339
 2005-07-05 19:58:54 +00:00
Chris Lattner
f8faaa8a39 Fit to 80 columns 
llvm-svn: 22336
 2005-07-05 17:50:16 +00:00
Chris Lattner
23a1b681d0 Fix PowerPC varargs 
llvm-svn: 22335
 2005-07-05 17:48:31 +00:00
Andrew Lenharth
d2db55ec81 check the correct VT 
llvm-svn: 22332
 2005-07-04 20:07:21 +00:00
Andrew Lenharth
6a674b7805 fix loading address of fp symbols 
llvm-svn: 22331
 2005-07-03 20:06:13 +00:00
Chris Lattner
93a2576078 Percolate the call up to the right superclass 
llvm-svn: 22330
 2005-07-03 17:34:39 +00:00
Nate Begeman
12d2961fd2 The statistic needs to be in the correct namespace. 
llvm-svn: 22327
 2005-07-01 23:56:38 +00:00
Chris Lattner
6a865d5a22 Varargs is apparently currently broken on PPC. This hacks it so that it 
is at least overloading the right virtual methods.  The implementations
are currently wrong though.  This fixes Ptrdist/bc, but not other programs
(e.g. siod).

llvm-svn: 22326
 2005-07-01 23:11:56 +00:00
Chris Lattner
b299933fc7 Refactor X86AsmPrinter.cpp into multiple files. Patch contributed 
by Aaron Gray, cleaned up by me.

llvm-svn: 22324
 2005-07-01 22:44:09 +00:00
Andrew Lenharth
b1de98d654 simplify call code, remove pseudo ops for div and rem, track more loads and stores 
llvm-svn: 22323
 2005-07-01 19:14:02 +00:00
Andrew Lenharth
f2c8cd0c36 simplify call code, remove pseudo ops for div and rem, track more loads and stores 
llvm-svn: 22322
 2005-07-01 19:12:13 +00:00
Chris Lattner
c2438fe76f remove some debugging code 
llvm-svn: 22321
 2005-07-01 06:40:58 +00:00
Nate Begeman
31e3028bac Make the x86 asm printer darwin-aware. This mostly entails doing the same 
thing as cygwin most of the time, and printing our alignments in log2
rather than number of bytes.

llvm-svn: 22316
 2005-06-30 00:53:20 +00:00
Andrew Lenharth
898efb338a restore old srcValueNode behavior and try to to work around it 
llvm-svn: 22315
 2005-06-29 18:54:02 +00:00
Andrew Lenharth
edccb834bb tracking the instructions causing loads and stores provides more information than just the pointer being loaded or stored 
llvm-svn: 22311
 2005-06-29 15:57:19 +00:00
Andrew Lenharth
781dd8e05f thinko 
llvm-svn: 22309
 2005-06-29 13:35:05 +00:00
Andrew Lenharth
6b4dbd7cd5 unify SelectExpr and SelectFP 
llvm-svn: 22308
 2005-06-29 12:49:51 +00:00
Andrew Lenharth
88491475e2 fix most regressions 
llvm-svn: 22307
 2005-06-29 12:23:34 +00:00
Andrew Lenharth
172871ba0f support more relocations for stores also 
llvm-svn: 22306
 2005-06-29 00:39:17 +00:00
Andrew Lenharth
41d08a0bbe Get rid of all symbolic loads. I now do gernate all relocations sequences 
rather than relying on the assembler.  Only a few more pseudo instructions
left.  Also merge load code paths.

llvm-svn: 22305
 2005-06-29 00:31:08 +00:00
Andrew Lenharth
d1dbc8ab27 some call work 
llvm-svn: 22303
 2005-06-27 23:59:51 +00:00
Andrew Lenharth
cc12cd8c5a So, it turns out I forgot that one valid way of restoring GP after a call 
is to use RA, which assumes the called function uses RA for the register
holding the return address when it issues a ret.

llvm-svn: 22301
 2005-06-27 23:24:11 +00:00
Nate Begeman
032a94775d Initial set of .td file changes necessary to get scalar fp in xmm registers 
working.  The instruction selector changes will hopefully be coming later
this week once they are debugged.  This is necessary to support the darwin
x86 FP model, and is recommended by intel as the replacement for x87.  As
a bonus, the register allocator knows how to deal with these registers
across basic blocks, unliky the FP stackifier.  This leads to significantly
better codegen in several cases.

llvm-svn: 22300
 2005-06-27 21:20:31 +00:00
Andrew Lenharth
34630b5ab0 get rid of another pseudo op 
llvm-svn: 22299
 2005-06-27 21:11:40 +00:00
Andrew Lenharth
b80c19b01a generate address of constant pool entries 
llvm-svn: 22298
 2005-06-27 21:02:56 +00:00
Andrew Lenharth
6e30e970ed Misha happification patch 
llvm-svn: 22297
 2005-06-27 17:39:17 +00:00
Andrew Lenharth
a3f70592a7 Reduce use of pseudo ops 
Namely, output the rellocation flags explicitly when loading constants.
Added benifit: save a load when loading from the constant pool.

llvm-svn: 22296
 2005-06-27 17:15:36 +00:00
Andrew Lenharth
573514894c missed a load 
llvm-svn: 22295
 2005-06-27 16:40:26 +00:00
Andrew Lenharth
ac3ecf5338 make constant pool labels local 
llvm-svn: 22294
 2005-06-27 16:29:54 +00:00
Andrew Lenharth
f50cb3fad2 who said we had to use the return address in the return address register. Might save a move in many cases 
llvm-svn: 22293
 2005-06-27 15:36:48 +00:00
Chris Lattner
cd6b5c5011 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.

llvm-svn: 22292
 2005-06-27 06:30:12 +00:00
Andrew Lenharth
9dc5d846ee depend more on legalize putting constants on the RHS 
llvm-svn: 22289
 2005-06-26 23:01:11 +00:00
Andrew Lenharth
91bc570aac With setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand), Legalize 
should be able to handle this case.  The code is there, so let's see
if it works.

llvm-svn: 22288
 2005-06-26 22:23:06 +00:00
Chris Lattner
06282f51cf Refactor the addPassesToEmitAssembly interface into a addPassesToEmitFile 
interface.

llvm-svn: 22282
 2005-06-25 02:48:37 +00:00
Andrew Lenharth
17f46306d6 remove a pseudo instruction, make ret always right, and fix vararg chains 
llvm-svn: 22276
 2005-06-23 23:42:05 +00:00
Andrew Lenharth
51d9d1b763 finally, Working varargs 
llvm-svn: 22275
 2005-06-23 16:48:51 +00:00
Andrew Lenharth
eda77c60a0 more complete Lowering for vacopy and vaarg 
llvm-svn: 22274
 2005-06-22 23:04:28 +00:00
Andrew Lenharth
4fd2bde906 If we support structs as va_list, we must pass pointers to them to va_copy 
See last commit for LangRef, this implements it on all targets.

llvm-svn: 22273
 2005-06-22 21:04:42 +00:00
Andrew Lenharth
e54b651806 Make it easier to find alpha stuff in doxygen, and fixup labeling 
of memory instructions in the assembly, to allow later linking
of traces with LLVM Value*s.

llvm-svn: 22271
 2005-06-22 17:19:45 +00:00
John Criswell
00c8485c77 Fixed indentation. 
llvm-svn: 22270
 2005-06-20 19:59:22 +00:00
Andrew Lenharth
4a1dc74471 so this doesn't crash when run. It is hard to tell if things are right enough to work correctly with all the TmpInstructions running around 
llvm-svn: 22261
 2005-06-19 05:45:00 +00:00
Andrew Lenharth
5750531305 OK, at least get rid of old stuff, and mark what needs to be fixed for V9 
llvm-svn: 22255
 2005-06-18 18:46:40 +00:00
Andrew Lenharth
a9214fec08 core changes for varargs 
llvm-svn: 22254
 2005-06-18 18:34:52 +00:00
Reid Spencer
678c9a3b00 Clean up some uninitialized variables and missing return statements that 
GCC 4.0.0 compiler (sometimes incorrectly) warns about under release build.

llvm-svn: 22249
 2005-06-18 17:37:34 +00:00