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d91c01484c
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9085 Commits

Author SHA1 Message Date
Chris Lattner
d91c01484c add a note 
llvm-svn: 57557
 2008-10-15 05:53:25 +00:00
Chris Lattner
7194e8406a add support for folding immediates into stores when they 
are due to argument passing in calls.  This is significant because
it hits all immediate arguments to calls on x86-32.

llvm-svn: 57556
 2008-10-15 05:38:32 +00:00
Chris Lattner
214643296b fold immediates into stores in simple cases, this produces diffs like 
this:

-	movl	$0, %eax
-	movl	%eax, _yy_n_chars
+	movl	$0, _yy_n_chars

llvm-svn: 57555
 2008-10-15 05:30:52 +00:00
Chris Lattner
5716b8daa4 fold compare of null pointer into compare with 0. 
llvm-svn: 57553
 2008-10-15 05:18:04 +00:00
Chris Lattner
928e8e5092 Some minor cleanups: 
1. Compute action in X86SelectSelect based on MVT instead of type.
2. Use TLI.getValueType(..) instead of MVT::getVT(..) because the former
   handles pointers and the later doesn't.
3. Don't pass TLI into isTypeLegal, since it already has access to it as 
   an ivar.

#2 gives fast isel some minor new functionality: handling load/stores of
pointers.

llvm-svn: 57552
 2008-10-15 05:07:36 +00:00
Chris Lattner
da69b5e401 Use switch on VT instead of Type* comparisons. 
llvm-svn: 57551
 2008-10-15 04:32:45 +00:00
Chris Lattner
052e062f08 Use X86FastEmitCompare for FCMP_OEQ and FCMP_UNE: it doesn't 
change the generated code, but makes the code simpler.

llvm-svn: 57550
 2008-10-15 04:29:23 +00:00
Chris Lattner
d7024dafbf refactor compare emission out into a new X86FastEmitCompare method, 
which makes it easy to share the compare/imm folding logic with 'setcc'.
This shaves a bunch of instructions off the common select case, which
happens a lot in llvm-gcc.

llvm-svn: 57549
 2008-10-15 04:26:38 +00:00
Chris Lattner
cbea6edde5 Fold immediates into compares when possible, producing "cmp $4, %eax" instead of 
loading 4 into a register and then doing the compare.

llvm-svn: 57548
 2008-10-15 04:13:29 +00:00
Chris Lattner
905dbd0dea more minor refactoring of X86SelectBranch, no functionality change. 
llvm-svn: 57547
 2008-10-15 04:02:26 +00:00
Chris Lattner
99d88895b6 factor buildmi calls in X86SelectBranch 
llvm-svn: 57546
 2008-10-15 03:58:05 +00:00
Chris Lattner
97e96bcca0 factor some more BuildMI's in X86SelectCmp 
llvm-svn: 57545
 2008-10-15 03:52:54 +00:00
Chris Lattner
e66c12b3f5 factor some BuildMI calls, no functionality change. 
llvm-svn: 57544
 2008-10-15 03:47:17 +00:00
Evan Cheng
cb8b4e9dd4 - Add target lowering hooks that specify which setcc conditions are illegal, 
i.e. conditions that cannot be checked with a single instruction. For example,
SETONE and SETUEQ on x86.
- Teach legalizer to implement *illegal* setcc as a and / or of a number of
legal setcc nodes. For now, only implement FP conditions. e.g. SETONE is
implemented as SETO & SETNE, SETUEQ is SETUO | SETEQ.
- Move x86 target over.

llvm-svn: 57542
 2008-10-15 02:05:31 +00:00
Dan Gohman
c070ffc493 FastISel support for exception-handling constructs. 
- Move the EH landing-pad code and adjust it so that it works
   with FastISel as well as with SDISel.
 - Add FastISel support for @llvm.eh.exception and
   @llvm.eh.selector.

llvm-svn: 57539
 2008-10-14 23:54:11 +00:00
Dale Johannesen
19407daf55 Accept -march=i586, because gcc does (a synonym 
for pentium).  Fixes
gcc.target/i386/20000720-1.c
gcc.target/i386/pr26826.c

llvm-svn: 57528
 2008-10-14 22:06:33 +00:00
Evan Cheng
3faedff2de Rename LoadX to LoadExt. 
llvm-svn: 57526
 2008-10-14 21:26:46 +00:00
Jim Grosbach
d0ff59ec42 Update ARM Insn encoding to get endian-ness to match the documentation (31-0 left to right) 
llvm-svn: 57524
 2008-10-14 20:36:24 +00:00
Dan Gohman
9543edc4ef Fix command-line option printing to print two spaces where needed, 
instead of requiring all "short description" strings to begin with
two spaces. This makes these strings less mysterious, and it fixes
some cases where short description strings mistakenly did not
begin with two spaces.

llvm-svn: 57521
 2008-10-14 20:25:08 +00:00
Evan Cheng
39a819027c Fix indentation. 
llvm-svn: 57508
 2008-10-14 17:15:39 +00:00
Dan Gohman
e08e0dcfcc When doing the very-late shift-and address-mode optimization, 
create a new DAG node to represent the new shift to keep the
DAG consistent, even though it'll almost always be folded into
the address.

If a user of the resulting address has multiple uses, the
nodes may get revisited by a later MatchAddress call, in which
case DAG inconsistencies do matter.

This fixes PR2849.

llvm-svn: 57465
 2008-10-13 20:52:04 +00:00
Anton Korobeynikov
6204f4ac43 Update size of inst correctly with segment override. 
llvm-svn: 57414
 2008-10-12 10:30:11 +00:00
Chris Lattner
7910d59d44 Change CALLSEQ_BEGIN and CALLSEQ_END to take TargetConstant's as 
parameters instead of raw Constants.  This prevents the constants from
being selected by the isel pass, fixing PR2735.

llvm-svn: 57385
 2008-10-11 22:08:30 +00:00
Duncan Sands
f175d9eae0 Fix comment typo. 
llvm-svn: 57381
 2008-10-11 19:34:24 +00:00
Anton Korobeynikov
d8b3e6f0ce Add ability to override segment (mostly for code emitter purposes). 
llvm-svn: 57380
 2008-10-11 19:09:15 +00:00
Dale Johannesen
03d0a7d70c Fix SSE4.1 roundss, roundsd. While the instructions have 
the same pattern as roundpd/roundps, the Intel compiler 
builtins do not:  rounds* has an extra operand.  Fixes
gcc.target/i386/sse4_1-rounds[sd]-[1234].c

llvm-svn: 57370
 2008-10-10 23:51:03 +00:00
Anton Korobeynikov
e44fccb2f0 Fix a thinko and unbreak sparc default CC 
llvm-svn: 57368
 2008-10-10 21:47:37 +00:00
Anton Korobeynikov
f5398df73c Extend set of return registers on sparc until someone will implement MRV support there. At least, this will allow libgcc compile, however we are not ABI-compatible with stuff compiled with native gcc. 
llvm-svn: 57364
 2008-10-10 20:30:14 +00:00
Anton Korobeynikov
1ead869e67 Ignore extra 'r' modifier for now 
llvm-svn: 57363
 2008-10-10 20:29:50 +00:00
Anton Korobeynikov
ffdc3498b4 Use expand for smul_lohi for now 
llvm-svn: 57362
 2008-10-10 20:29:31 +00:00
Anton Korobeynikov
8ed548b24a Add rudimentary support for 'r' register operand 
llvm-svn: 57359
 2008-10-10 20:28:10 +00:00
Anton Korobeynikov
ba8bb3e12f Cleanup 
llvm-svn: 57358
 2008-10-10 20:27:31 +00:00
Anton Korobeynikov
6054846989 Add rudimentary asmprinter support for printing inline asm operands for sparc. 
llvm-svn: 57346
 2008-10-10 10:15:03 +00:00
Anton Korobeynikov
a12d563611 Add dummy 'm' inline asm constraint handler for Sparc. I'm not sure, whether it is correct, however :) 
llvm-svn: 57345
 2008-10-10 10:14:47 +00:00
Anton Korobeynikov
8cfd14b138 Cleanup 
llvm-svn: 57344
 2008-10-10 10:14:15 +00:00
Dale Johannesen
075a62519f Add a "loses information" return value to APFloat::convert 
and APFloat::convertToInteger.  Restore return value to
IEEE754.  Adjust all users accordingly.

llvm-svn: 57329
 2008-10-09 23:00:39 +00:00
Dale Johannesen
9e57068854 Rename APFloat::convertToAPInt to bitcastToAPInt to 
make it clearer what the function does.  No functional
change.

llvm-svn: 57325
 2008-10-09 18:53:47 +00:00
Chris Lattner
284ae75537 get CodeGen/Alpha/mul128.ll to work. 
llvm-svn: 57318
 2008-10-09 04:50:56 +00:00
Dale Johannesen
817eff07b1 (re)Put const weak strings in appropriate section on Darwin. 
g++dg/abi/key2.C

llvm-svn: 57309
 2008-10-08 21:49:47 +00:00
Jim Grosbach
974799922e Comment to be explicit that the enumeration values for CondCodes matter. 
llvm-svn: 57295
 2008-10-08 16:24:35 +00:00
Duncan Sands
bc53ce331a Use template to distinguish between function variants. 
GCC 4.4.0 gives an error on the "int" declaration for example
saying that it has already been declared (using the "short"
one). Using templates here allow the compiler to distinguish
between the function to choose.

Also, "llvm/Support/DataTypes.h" was not included, leading to
error messages about not knowing "uint32_t" for example.

Patch by Samuel Tardieu.

llvm-svn: 57292
 2008-10-08 07:44:52 +00:00
Duncan Sands
8f296a3788 Add <cstdio> include where needed by gcc-4.4. 
Patch by Samuel Tardieu.

llvm-svn: 57291
 2008-10-08 07:23:46 +00:00
Dan Gohman
c65ca09308 Add MBB successors and physreg Uses in the same order that 
SDISel typically adds them in. This makes it a little easier
to compare FastISel output with SDISel output.

llvm-svn: 57266
 2008-10-07 22:10:33 +00:00
Dan Gohman
2561119124 Instead of emitting an implicit use for the super-register of 
X86::CL that was used, emit an EXTRACT_SUBREG from the CL
super-register to CL. This more precisely describes how the
CL register is being used.

llvm-svn: 57264
 2008-10-07 21:50:36 +00:00
Jim Grosbach
8ac554209f Unconditional branch instruction encoding fix. Needs to use ABI, not AXI, to get the proper opcode bits. 
llvm-svn: 57262
 2008-10-07 21:08:09 +00:00
Jim Grosbach
5fb8bb7434 need ARM.h for ARMCC definition 
llvm-svn: 57261
 2008-10-07 21:01:51 +00:00
Owen Anderson
c9a628af26 Add an option to enable StrongPHIElimination, for ease of testing. 
llvm-svn: 57259
 2008-10-07 20:22:28 +00:00
Jim Grosbach
d44d20be6e Encode the conditional execution predicate when JITing. 
llvm-svn: 57258
 2008-10-07 19:05:35 +00:00
Dale Johannesen
3d2e449078 Model hardwired inputs & outputs of x86 8-bit divides correctly. 
Fixes local RA miscompilation of gcc.c-torture/execute/20020904-1.c -O0.

llvm-svn: 57257
 2008-10-07 18:54:28 +00:00
Jim Grosbach
61f8207ac9 Clarify naming and correct conditional so that CMP and CMN instructions get the Rn operand encoded properly 
llvm-svn: 57252
 2008-10-07 17:42:09 +00:00