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7089 Commits

Author SHA1 Message Date
Stuart Hastings b476b0cc9f Revise MOVSX16rr8/MOVZX16rr8 (and rm variants) to no longer be 
pseudos.  rdar://problem/8614450

llvm-svn: 131641
 2011-05-19 16:59:50 +00:00
Eli Friedman 6fc94dd687 Revert unintentional commit. 
llvm-svn: 131597
 2011-05-18 23:13:10 +00:00
Eli Friedman 1754a25977 More instcombine simplifications towards better debug locations. 
llvm-svn: 131596
 2011-05-18 23:11:30 +00:00
Cameron Zwarich 9ddeceff19 Reserve the segment registers on x86 to fix verifier failures in any code that 
uses them.

llvm-svn: 131591
 2011-05-18 22:24:48 +00:00
Chad Rosier f4e832b14e Enables vararg functions that pass all arguments via registers to be optimized into tail-calls when possible. 
llvm-svn: 131560
 2011-05-18 19:59:50 +00:00
Mon P Wang 6f6b44d19d Enable autodetect of popcnt 
llvm-svn: 131476
 2011-05-17 18:33:37 +00:00
Eli Friedman 7b27942fe7 Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872. 
This is r131438 with a couple small fixes.

llvm-svn: 131474
 2011-05-17 18:29:03 +00:00
Eli Friedman d000a2c26e Clean up the mess created by r131467+r131469. 
llvm-svn: 131471
 2011-05-17 18:02:22 +00:00
Stuart Hastings c65d8eda7b Revert 131467 due to buildbot complaint. 
llvm-svn: 131469
 2011-05-17 16:59:46 +00:00
Stuart Hastings 3cf5308890 Fix an obscure issue in X86_64 parameter passing: if a tiny byval is 
passed as the fifth parameter, insure it's passed correctly (in R9).
rdar://problem/6920088

llvm-svn: 131467
 2011-05-17 16:45:55 +00:00
Nadav Rotem d8edb1d5cc Fix a bug in PerformEXTRACT_VECTOR_ELTCombine. The code created an ADD SDNode 
with two different types, in cases where the index and the ptr had different
types.

llvm-svn: 131461
 2011-05-17 08:31:57 +00:00
Eric Christopher 56a42ebf15 Update comment. 
llvm-svn: 131459
 2011-05-17 08:16:14 +00:00
Eric Christopher a1d9e29552 Support XOR and AND optimization with no return value. 
Finishes off rdar://8470697

llvm-svn: 131458
 2011-05-17 08:10:18 +00:00
Eric Christopher abfe3131e3 Couple less magic numbers. 
llvm-svn: 131457
 2011-05-17 07:50:41 +00:00
Eric Christopher eb47a2a1e5 Make this code a little less magic number laden. 
llvm-svn: 131456
 2011-05-17 07:47:55 +00:00
Chris Lattner 1e81f57bf0 add a note 
llvm-svn: 131455
 2011-05-17 07:22:33 +00:00
Eli Friedman 7335e8a720 Back out r131444 and r131438; they're breaking nightly tests. I'll look into 
it more tomorrow.

llvm-svn: 131451
 2011-05-17 02:36:59 +00:00
Eli Friedman 83ba150f3a Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872. 
llvm-svn: 131438
 2011-05-17 00:13:47 +00:00
Eli Friedman d4a3609d30 Remove dead code. Fix associated test to use FileCheck. 
llvm-svn: 131424
 2011-05-16 21:28:22 +00:00
Eli Friedman a4d4a0162d Make fast-isel work correctly s/uadd.with.overflow intrinsics. 
llvm-svn: 131420
 2011-05-16 21:06:17 +00:00
Eli Friedman 8f1e11cde9 Fix a FIXME by moving the fast-isel implementation of the objectsize intrinsic from the x86 code to the generic code. 
llvm-svn: 131332
 2011-05-14 00:47:51 +00:00
Rafael Espindola df9db7ed92 Don't produce a vmovntdq if we don't have AVX support. 
llvm-svn: 131330
 2011-05-14 00:30:01 +00:00
Eli Friedman f080a57b81 Zap useless code; this hasn't done anything useful since fast-isel switched to being bottom-up (a very long time ago). 
llvm-svn: 131329
 2011-05-14 00:19:32 +00:00
Eric Christopher 2a9dbbbb12 Turn this into a table, this will make more sense shortly. 
Part of rdar://8470697

llvm-svn: 131200
 2011-05-11 21:44:58 +00:00
Nadav Rotem 8f971c27fb Add custom lowering of X86 vector SRA/SRL/SHL when the shift amount is a splat vector. 
llvm-svn: 131179
 2011-05-11 08:12:09 +00:00
Eric Christopher 4a34e61e53 Optimize atomic lock or that doesn't use the result value. 
Next up: xor and and.

Part of rdar://8470697

llvm-svn: 131171
 2011-05-10 23:57:45 +00:00
Eric Christopher e33464663f Refactor lock versions of binary operators to be a little less 
cut and paste.

llvm-svn: 131139
 2011-05-10 18:36:16 +00:00
Benjamin Kramer d724a590e5 X86: Add a bunch of peeps for add and sub of SETB. 
"b + ((a < b) ? 1 : 0)" compiles into
	cmpl	%esi, %edi
	adcl	$0, %esi
instead of
	cmpl	%esi, %edi
	sbbl	%eax, %eax
	andl	$1, %eax
	addl	%esi, %eax

This saves a register, a false dependency on %eax
(Intel's CPUs still don't ignore it) and it's shorter.

llvm-svn: 131070
 2011-05-08 18:36:07 +00:00
Eli Friedman 2518f8376d Make the logic for determining function alignment more explicit. No functionality change. 
llvm-svn: 131012
 2011-05-06 20:34:06 +00:00
Rafael Espindola a716096677 Dead code elimination. 
llvm-svn: 130984
 2011-05-06 14:56:22 +00:00
Eli Friedman f1e2b50a30 PR9848: pandn is not commutative. 
No test because I can't think of any way to write one that won't break quickly.

llvm-svn: 130932
 2011-05-05 17:45:31 +00:00
Jakob Stoklund Olesen 808dca12f8 Fix X86RegisterInfo::getMatchingSuperRegClass for sub_8bit_hi. 
It is OK for B to be any GR8_ABCD_H superclass, the returned register class
doesn't have to map surjectively onto B.

llvm-svn: 130892
 2011-05-04 23:54:54 +00:00
Bill Wendling db0996c822 Replace the "movnt" intrinsics with a native store + nontemporal metadata bit. 
<rdar://problem/8460511>

llvm-svn: 130791
 2011-05-03 21:11:17 +00:00
Michael J. Spencer 9973738b65 Add pentium{3,4}m cpus. Patch by Alexander Best! 
llvm-svn: 130749
 2011-05-03 03:42:50 +00:00
Eric Christopher d2aa241378 xmm0 is an implicit parameter in this and so shouldn't be in the 
string template.

Fixes rdar://8493866

llvm-svn: 130747
 2011-05-03 01:28:32 +00:00
Rafael Espindola fc8223670a Add r130623 back now that ELF has been fixed to work with -fno-dwarf2-cfi-asm. 
llvm-svn: 130658
 2011-05-01 15:44:13 +00:00
Chandler Carruth ddc91b25e3 Remove an unused variable from this function introduced in r130637, 
likely a result of copy/paste.

llvm-svn: 130640
 2011-05-01 06:14:10 +00:00
Rafael Espindola 750cb61553 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637
 2011-05-01 04:49:54 +00:00
Rafael Espindola 95215a76cd I forgot these files in the previous commit. 
llvm-svn: 130635
 2011-05-01 04:19:24 +00:00
Rafael Espindola b7c2286055 Revert the previous patch while I figure out how to make llvm-gcc 
less agressive about disabling cfi on linux :-(

llvm-svn: 130626
 2011-04-30 23:03:44 +00:00
Jakob Stoklund Olesen 2348cdd67f X86AsmPrinter doesn't know how to handle the X86II::MO_GOT_ABSOLUTE_ADDRESS flag 
after folding ADD32ri to ADD32mi, so don't do that.

This only happens when the greedy register allocator gets itself in trouble and
spills %vreg9 here:

16L             %vreg9<def> = MOVPC32r 0, %ESP<imp-use>; GR32:%vreg9
48L             %vreg9<def> = ADD32ri %vreg9, <es:_GLOBAL_OFFSET_TABLE_>[TF=1], %EFLAGS<imp-def,dead>; GR32:%vreg9

That should never happen, the live range should be split instead.

llvm-svn: 130625
 2011-04-30 23:00:05 +00:00
Rafael Espindola 5265bc483e Enable CFI on OS X. 
Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.

The only two differences I know of are:

* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.

llvm-svn: 130623
 2011-04-30 22:29:54 +00:00
Benjamin Kramer 6708499b6d This is done. 
llvm-svn: 130499
 2011-04-29 14:09:57 +00:00
Chris Lattner 011eae7512 clean up after Sean's r127646 patch. 
llvm-svn: 130475
 2011-04-29 05:40:18 +00:00
Daniel Dunbar a86188bf8e Target/X86/MC: Add an option for disabling arith relaxation, for my own testing 
purposes.

llvm-svn: 130438
 2011-04-28 21:23:31 +00:00
Eli Friedman 7cd5101ad3 fast-isel sret calls, try 2. We actually do need to do something on x86-32. rdar://problem/9303592 . 
llvm-svn: 130429
 2011-04-28 20:19:12 +00:00
Eli Friedman d5a80ca3c8 Revert r130348; causing buildbot issues on x86-32. 
llvm-svn: 130412
 2011-04-28 18:06:10 +00:00
Rafael Espindola c5dac4df2e Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when 
converting the symbol passed to .cfi_personality into bytes is the file.

llvm-svn: 130400
 2011-04-28 16:09:09 +00:00
Chris Lattner 2a75c72e1c move PR9803 to this readme. 
llvm-svn: 130385
 2011-04-28 05:33:16 +00:00
Eli Friedman 8bd572fc58 fast-isel sret. We actually don't need to do anything special on x86. :) rdar://problem/9303592 . 
llvm-svn: 130348
 2011-04-27 23:58:52 +00:00