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Commit Graph

1620 Commits

Author SHA1 Message Date
Chris Lattner
e7f14fb39d Handle 64-bit constant exprs on 64-bit targets.
llvm-svn: 22696
2005-08-08 04:26:32 +00:00
Chris Lattner
fdb467b18d add a small simplification that can be exposed after promotion/expansion
llvm-svn: 22691
2005-08-07 05:00:44 +00:00
Chris Lattner
d3a8084e5b Change FindEarliestCallSeqEnd (used by libcall insertion) to use a set to
avoid revisiting nodes more than once.  This eliminates a source of
potentially exponential behavior.  For a small function in 191.fma3d
(hexah_stress_divergence_), this speeds up isel from taking > 20mins to
taking 0.07s.

llvm-svn: 22680
2005-08-05 18:10:27 +00:00
Chris Lattner
c7a67abac2 Fix a use-of-dangling-pointer bug, from the introduction of SrcValue's.
llvm-svn: 22679
2005-08-05 16:55:31 +00:00
Chris Lattner
644edfb51e Fix a latent bug in the libcall inserter that was exposed by Nate's patch
yesterday.  This fixes whetstone and a bunch of programs in the External tests.

llvm-svn: 22678
2005-08-05 16:23:57 +00:00
Nate Begeman
348caa49b3 Fix a fixme in LegalizeDAG
llvm-svn: 22661
2005-08-04 21:43:28 +00:00
Misha Brukman
8b8272b648 * Unbreak release build
* Add comments to #endif pragmas for readability

llvm-svn: 22647
2005-08-04 14:22:41 +00:00
Chris Lattner
d124203207 Fix PR611, codegen'ing SREM of FP operands to fmod or fmodf instead of
the sequence used for integer ops

llvm-svn: 22629
2005-08-03 20:31:37 +00:00
Chris Lattner
cc8ae687e1 Update to use the new MathExtras.h support for log2 computation.
Patch contributed by Jim Laskey!

llvm-svn: 22594
2005-08-02 19:26:06 +00:00
Chris Lattner
83f0262a2c Fix casts from long to sbyte on ppc
llvm-svn: 22570
2005-08-01 18:16:37 +00:00
Jeff Cohen
019104459d Keep tabs and trailing spaces out.
llvm-svn: 22565
2005-07-30 18:33:25 +00:00
Chris Lattner
d742a80e9e fix float->long conversions on x86
llvm-svn: 22563
2005-07-30 01:40:57 +00:00
Chris Lattner
e0b705ba00 Allow targets to have custom expanders for FP_TO_*INT conversions where
both the src and dest values are legal

llvm-svn: 22555
2005-07-30 00:04:12 +00:00
Chris Lattner
8d48aef4e3 Allow targets to define custom expanders for FP_TO_*INT
llvm-svn: 22548
2005-07-29 00:33:32 +00:00
Chris Lattner
f355c0f6ea allow a target to request that unknown FP_TO_*INT conversion be promoted to
a larger integer destination.

llvm-svn: 22547
2005-07-29 00:11:56 +00:00
Chris Lattner
6b4f386826 instead of having all conversions be handled by one case value, and then have
subcases inside, break things out earlier.

llvm-svn: 22546
2005-07-28 23:31:12 +00:00
Andrew Lenharth
f623af9b64 new is not a valid default anywhere, so make this pure virtual
llvm-svn: 22542
2005-07-28 18:13:59 +00:00
Chris Lattner
b0658628c1 Fix debug info to not print out recently freed memory.
llvm-svn: 22529
2005-07-27 23:11:25 +00:00
Chris Lattner
1a3a4c7791 Print symbolic register names in debug dumps
llvm-svn: 22528
2005-07-27 23:03:38 +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
a25a2010e3 Remove unnecessary FP_EXTEND. This causes worse codegen for SSE.
llvm-svn: 22469
2005-07-19 16:50:03 +00:00
Chris Lattner
d4f9ab3809 The assertion was wrong: the code only worked for i64. While we're at it,
expand the code to work for all integer datatypes.  This should unbreak
alpha.

llvm-svn: 22464
2005-07-18 04:31:14 +00:00
Chris Lattner
07d79f8aa7 Only get the .bss and .data sections when needed instead of unconditionally.
This allows is to not emit empty sections when .data or .bss is not used.

llvm-svn: 22457
2005-07-16 17:41:06 +00:00
Chris Lattner
60bcec0238 Refactor getSection() method to make it easier to use.
llvm-svn: 22455
2005-07-16 17:36:04 +00:00
Chris Lattner
40fbf63df8 Major refactor of the ELFWriter code. Instead of building up one big
vector that represents the .o file at once, build up a vector for each
section of the .o file.  This is needed because the .o file writer needs
to be able to switch between sections as it emits them (e.g. switch
between the .text section and the .rel section when emitting code).

This patch has no functionality change.

llvm-svn: 22453
2005-07-16 08:01:13 +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
Chris Lattner
10da57bfed Break the code for expanding UINT_TO_FP operations out into its own
SelectionDAGLegalize::ExpandLegalUINT_TO_FP method.

Add a new method, PromoteLegalUINT_TO_FP, which allows targets to request
that UINT_TO_FP operations be promoted to a larger input type.  This is
useful for targets that have some UINT_TO_FP or SINT_TO_FP operations but
not all of them (like X86).

The same should be done with SINT_TO_FP, but this patch does not do that
yet.

llvm-svn: 22447
2005-07-16 00:19:57 +00:00
Chris Lattner
94e486c56e You can't use config options without config.h
llvm-svn: 22446
2005-07-15 22:48:31 +00:00
Chris Lattner
d8eb6ea6da Make this use the new autoconf support for finding the executables for
gv and Graphviz.

llvm-svn: 22434
2005-07-14 05:33:13 +00:00
Chris Lattner
d9f1a60c61 As discussed on IRC, this stuff is just for debugging.
llvm-svn: 22432
2005-07-14 05:17:43 +00:00
Chris Lattner
61b33e0bc4 If the Graphviz program is available, use it to visualize dot graphs.
llvm-svn: 22429
2005-07-14 01:10:55 +00:00
Chris Lattner
aeae45b371 Fix Alpha/2005-07-12-TwoMallocCalls.ll and PR593.
It is not safe to call LegalizeOp on something that has already been legalized.
Instead, just force another iteration of legalization.

This could affect all platforms but X86, as this codepath is dynamically
dead on X86 (ISD::MEMSET and friends are legal).

llvm-svn: 22419
2005-07-13 02:00:04 +00:00
Chris Lattner
628a248ff9 Fix test/Regression/CodeGen/Generic/2005-07-12-memcpy-i64-length.ll
llvm-svn: 22417
2005-07-13 01:42:45 +00:00
Chris Lattner
bec12eb953 Add support for 64-bit elf files
llvm-svn: 22400
2005-07-12 06:57:52 +00:00
Jeff Cohen
7bc4266cf1 VC++ demands that the function returns a value
llvm-svn: 22393
2005-07-12 02:53:33 +00:00
Chris Lattner
8dd11b0f9c Clean up code, no functionality changes.
llvm-svn: 22382
2005-07-11 06:34:30 +00:00
Chris Lattner
d710b0a025 Emit a symbol table entry for each function we output to the ELF file. This
allows objdump to know which function we are emitting to:

00000000 <foo>:     <----
   0:   b8 01 00 00 00          mov    $0x1,%eax
   5:   03 44 24 04             add    0x4(%esp,1),%eax
   9:   c3                      ret

... and allows .o files to be useful for linking :)

llvm-svn: 22378
2005-07-11 06:17:35 +00:00
Chris Lattner
34d2a2ae23 add code to emit the .text section to the section header.
Add a *VERY INITIAL* machine code emitter class.  This is enough to take
this C function:
int foo(int X) { return X +1; }

and make objdump produce the following:

$ objdump -d t-llvm.o

t-llvm.o:     file format elf32-i386

Disassembly of section .text:

00000000 <.text>:
   0:   b8 01 00 00 00          mov    $0x1,%eax
   5:   03 44 24 04             add    0x4(%esp,1),%eax
   9:   c3                      ret


Anything using branches or refering to the constant pool or requiring
relocations will not work yet.

llvm-svn: 22375
2005-07-11 05:17:18 +00:00
Chris Lattner
8c10fbf3cc Use a name mangler object to uniquify names and remove nonstandard
characters from them.

llvm-svn: 22371
2005-07-11 03:11:47 +00:00
Chris Lattner
6e49696ba6 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.

llvm-svn: 22367
2005-07-10 01:55:33 +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
Chris Lattner
c355896290 Introduce a new VTSDNode class with the ultimate goal of eliminating the
MVTSDNode class.  This class is used to provide an operand to operators
that require an extra type.  We start by converting FP_ROUND_INREG and
SIGN_EXTEND_INREG over to using it.

llvm-svn: 22364
2005-07-10 00:07:11 +00:00
Chris Lattner
de44e16474 Add support for emitting a .data section and .bss section.
Add support for emitting external and .bss symbols.

llvm-svn: 22358
2005-07-08 05:47:00 +00:00
Chris Lattner
efccb190b5 Add support for emitting the symbol table (and its string table) of the
module to the ELF file.  Test it by adding support for emitting common
symbols.  This allows us to compile this:

%X = weak global int 0
%Y = weak global int 0
%Z = weak global int 0

to an elf file that 'readelf's this:

Symbol table '.symtab' contains 4 entries:
   Num:    Value  Size Type    Bind   Vis      Ndx Name
     0: 00000000     0 NOTYPE  LOCAL  DEFAULT  UND
     1: 00000004     4 OBJECT  GLOBAL DEFAULT  COM X
     2: 00000004     4 OBJECT  GLOBAL DEFAULT  COM Y
     3: 00000004     4 OBJECT  GLOBAL DEFAULT  COM Z

llvm-svn: 22343
2005-07-07 07:02:20 +00:00
Chris Lattner
bf100c8bdb 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.

llvm-svn: 22338
2005-07-05 19:57:53 +00:00
Andrew Lenharth
3543e3b3a9 2 fixes:
1: Legalize operand in UINT_TO_FP expanision

2: SRA x, const i8 was not promoting the constant to shift amount type.
llvm-svn: 22337
2005-07-05 19:52:39 +00:00
Andrew Lenharth
c9903eb2cc I really didn't think this was necessary. But, Legalize wasn't running again
and legalizing the extload.  Strange.  Should fix most alpha regressions.

llvm-svn: 22329
2005-07-02 20:58:53 +00:00
Andrew Lenharth
b8c48ce74e oops
llvm-svn: 22320
2005-06-30 19:32:57 +00:00
Andrew Lenharth
04aa18bd2a FP EXTLOAD is not support on all archs, expand to LOAD and FP_EXTEND
llvm-svn: 22319
2005-06-30 19:22:37 +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