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8844 Commits

Author SHA1 Message Date
Sanjiv Gupta 1ecffe13b2 Fixed llc crash for zext (i1 -> i8) loads. 
llvm-svn: 92201
 2009-12-28 04:53:24 +00:00
Dale Johannesen 14ee5ead2d Testcase for llvm-gcc checkin 92108. 
llvm-svn: 92110
 2009-12-24 01:10:43 +00:00
Chris Lattner f5e3ed64d5 handle equality memcmp of 8 bytes on x86-64 with two unaligned loads and a 
compare.  On other targets we end up with a call to memcmp because we don't
want 16 individual byte loads.  We should be able to use movups as well, but
we're failing to select the generated icmp.

llvm-svn: 92107
 2009-12-24 01:07:17 +00:00
Chris Lattner 1a32ede6fd move an optimization for memcmp out of simplifylibcalls and into 
SDISel.  This optimization was causing simplifylibcalls to 
introduce type-unsafe nastiness.  This is the first step, I'll be 
expanding the memcmp optimizations shortly, covering things that
we really really wouldn't want simplifylibcalls to do.

llvm-svn: 92098
 2009-12-24 00:37:38 +00:00
Daniel Dunbar ccf79584f9 Remove an XFAIL. 
llvm-svn: 92036
 2009-12-23 20:13:44 +00:00
Mikhail Glushenkov f48a0c43b6 Allow (set_option SwitchOption, true). 
llvm-svn: 91997
 2009-12-23 12:49:30 +00:00
Sanjiv Gupta cd419eebce Reapply 91904. 
llvm-svn: 91996
 2009-12-23 11:19:09 +00:00
Sanjiv Gupta 6920c17f1f deleting empty file. 
llvm-svn: 91994
 2009-12-23 10:35:24 +00:00
Sanjiv Gupta f7b4f89588 Reverting back 91904. 
llvm-svn: 91993
 2009-12-23 09:46:01 +00:00
Dale Johannesen a864a67185 Use more sensible type for flags in asms. PR 5570. 
Patch by Sylve`re Teissier (sorry, ASCII only).

llvm-svn: 91988
 2009-12-23 07:32:51 +00:00
Eric Christopher fdb33458fc Update objectsize intrinsic and associated dependencies. Fix 
lowering code and update testcases.

llvm-svn: 91979
 2009-12-23 02:51:48 +00:00
Anton Korobeynikov ef3fdc1cbd Add testcase for PR5703 
llvm-svn: 91931
 2009-12-22 22:37:23 +00:00
Evan Cheng 71d7eaa87e Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size. 
llvm-svn: 91910
 2009-12-22 17:47:23 +00:00
Sanjiv Gupta 8c5f05fcee While converting one of the operands to a memory operand, we need to check if it is Legal and does not result into a cyclic dep. 
llvm-svn: 91904
 2009-12-22 14:25:37 +00:00
Chris Lattner f6d4129c76 specify a triple to use, fixing the test on non-x86-64 hosts. 
llvm-svn: 91900
 2009-12-22 07:01:12 +00:00
Bob Wilson 62a84ea8e3 Generalize SROA to allow the first index of a GEP to be non-zero. Add a 
missing check that an array reference doesn't go past the end of the array,
and remove some redundant checks for in-bound array and vector references
that are no longer needed.

llvm-svn: 91897
 2009-12-22 06:57:14 +00:00
Chris Lattner dd0c01b5de various cleanups, make the disassemble reject lines with too much 
data on them, for example:

	addb	%al, (%rax)
simple-tests.txt:11:5: error: excess data detected in input
0 0 0 0 0 
    ^

llvm-svn: 91896
 2009-12-22 06:56:51 +00:00
Chris Lattner dc9845b79a rewrite the file parser for the disassembler, implementing support for 
comments.  Also, check in a simple testcase for the disassembler,
including a test for r91864

llvm-svn: 91894
 2009-12-22 06:37:58 +00:00
Chris Lattner f21a220bcd Implement PR5795 by merging duplicated return blocks. This could go further 
by merging all returns in a function into a single one, but simplifycfg 
currently likes to duplicate the return (an unfortunate choice!)

llvm-svn: 91890
 2009-12-22 06:07:30 +00:00
Chris Lattner 2b297ed9ee convert to filecheck 
llvm-svn: 91889
 2009-12-22 06:04:26 +00:00
David Greene dbf7074296 Fix a bug in !subst where TableGen would go and resubstitute text it had 
just substituted.  This could cause infinite looping in certain
pathological cases.

llvm-svn: 91843
 2009-12-21 21:21:34 +00:00
Daniel Dunbar 0fc1f6c595 XFAIL these tests on powerpc, under the assumption that no one cares. If you care, feel free to fix. 
llvm-svn: 91826
 2009-12-21 17:31:59 +00:00
Chris Lattner 8fb07c5a21 fix PR5837 by having SSAUpdate reuse phi nodes for the 
'GetValueInMiddleOfBlock' case, instead of inserting 
duplicates.

A similar fix is almost certainly needed by the machine-level
SSAUpdate implementation.

llvm-svn: 91820
 2009-12-21 07:16:11 +00:00
Chris Lattner 7bc85a931e add check lines for min/max tests. 
llvm-svn: 91816
 2009-12-21 06:08:50 +00:00
Chris Lattner 33269813df really convert this to filecheck. 
llvm-svn: 91815
 2009-12-21 06:06:10 +00:00
Chris Lattner d4fb4296df give instcombine some helper functions for matching MIN and MAX, and 
implement some optimizations for MIN(MIN()) and MAX(MAX()) and 
MIN(MAX()) etc.  This substantially improves the code in PR5822 but
doesn't kick in much elsewhere.  2 max's were optimized in 
pairlocalalign and one in smg2000.

llvm-svn: 91814
 2009-12-21 06:03:05 +00:00
Chris Lattner 7a72d50de7 filecheckize 
llvm-svn: 91813
 2009-12-21 05:53:13 +00:00
Chris Lattner ffbd02829c enhance x-(-A) -> x+A to preserve NUW/NSW. 
Use the presence of NSW/NUW to fold "icmp (x+cst), x" to a constant in
cases where it would otherwise be undefined behavior.

Surprisingly (to me at least), this triggers hundreds of the times in
a few benchmarks: lencode, ldecode, and 466.h264ref seem to *really*
like this.

llvm-svn: 91812
 2009-12-21 04:04:05 +00:00
Chris Lattner 900ce231f9 Optimize all cases of "icmp (X+Cst), X" to something simpler. This triggers 
a bunch in lencode, ldecod, spass, 176.gcc, 252.eon, among others.  It is 
also the first part of PR5822

llvm-svn: 91811
 2009-12-21 03:19:28 +00:00
Chris Lattner d18b455086 convert to filecheck 
llvm-svn: 91810
 2009-12-21 03:11:05 +00:00
Chris Lattner 25bf6f8946 fix an overly conservative caching issue that caused memdep to 
cache a pointer as being unavailable due to phi trans in the
wrong place.  This would cause later queries to fail even when
they didn't involve phi trans.

llvm-svn: 91787
 2009-12-19 21:29:22 +00:00
Chris Lattner 95b431dd32 fix inconsistent use of tabs 
llvm-svn: 91783
 2009-12-19 20:44:43 +00:00
Sanjiv Gupta 8ac077df57 Emit direction operand in binary insns that stores in memory. 
llvm-svn: 91777
 2009-12-19 13:52:01 +00:00
Sanjiv Gupta bda8002e7f Test cases for changes done in 91768. 
llvm-svn: 91773
 2009-12-19 11:38:14 +00:00
Chris Lattner 4ad5eba568 fix PR5827 by disabling the phi slicing transformation in a case 
where instcombine would have to split a critical edge due to a
phi node of an invoke.  Since instcombine can't change the CFG,
it has to bail out from doing the transformation.

llvm-svn: 91763
 2009-12-19 07:01:15 +00:00
Evan Cheng b175de6356 Increase opportunities to optimize (brcond (srl (and c1), c2)). 
llvm-svn: 91717
 2009-12-18 21:31:31 +00:00
Bob Wilson 532cd232fb Reapply 91459 with a simple fix for the problem that broke the x86_64-darwin 
bootstrap.  This also replaces the WeakVH references that Chris objected to
with normal Value references.

llvm-svn: 91711
 2009-12-18 20:14:40 +00:00
Mikhail Glushenkov d7015906d0 Make 'set_option' work with list options. 
This works now: (set_option "list_opt", ["val_1", "val_2", "val_3"])

llvm-svn: 91679
 2009-12-18 11:27:26 +00:00
Eli Friedman 86b9d75dc8 Optimize icmp of null and select of two constants even if the select has 
multiple uses.  (The construct in question was found in gcc.)

llvm-svn: 91675
 2009-12-18 08:22:35 +00:00
Evan Cheng 4cf30b72bf On recent Intel u-arch's, folding loads into some unary SSE instructions can 
be non-optimal. To be precise, we should avoid folding loads if the instructions
only update part of the destination register, and the non-updated part is not
needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these instructions breaks
the partial register dependency and it can improve performance. e.g.

movss (%rdi), %xmm0
cvtss2sd %xmm0, %xmm0

instead of
cvtss2sd (%rdi), %xmm0

An alternative method to break dependency is to clear the register first. e.g.
xorps %xmm0, %xmm0
cvtss2sd (%rdi), %xmm0

llvm-svn: 91672
 2009-12-18 07:40:29 +00:00
Dan Gohman 51fbfb726f Tidy up this testcase and add test for tailcall optimization 
with unreachable.

llvm-svn: 91650
 2009-12-18 01:05:06 +00:00
Bob Wilson 3152b0471b Handle ARM inline asm "w" constraints with 64-bit ("d") registers. 
The change in SelectionDAGBuilder is needed to allow using bitcasts to convert
between f64 (the default type for ARM "d" registers) and 64-bit Neon vector
types.  Radar 7457110.

llvm-svn: 91649
 2009-12-18 01:03:29 +00:00
Dan Gohman 7f4326f8b6 Remove "tail" keywords. These calls are not intended to be tail calls. 
This protects this test from depending on codegen not performing the
tail call optimization by default.

llvm-svn: 91648
 2009-12-18 01:02:18 +00:00
Jakob Stoklund Olesen 78c5919b14 Add test case for the phi reuse patch. 
llvm-svn: 91642
 2009-12-18 00:11:44 +00:00
Sean Callanan 04d8cb74f3 Instruction fixes, added instructions, and AsmString changes in the 
X86 instruction tables.

Also (while I was at it) cleaned up the X86 tables, removing tabs and
80-line violations.

This patch was reviewed by Chris Lattner, but please let me know if
there are any problems.

* X86*.td
	Removed tabs and fixed 80-line violations

* X86Instr64bit.td
	(IRET, POPCNT, BT_, LSL, SWPGS, PUSH_S, POP_S, L_S, SMSW)
		Added
	(CALL, CMOV) Added qualifiers
	(JMP) Added PC-relative jump instruction
	(POPFQ/PUSHFQ) Added qualifiers; renamed PUSHFQ to indicate
		that it is 64-bit only (ambiguous since it has no
		REX prefix)
	(MOV) Added rr form going the other way, which is encoded
		differently
	(MOV) Changed immediates to offsets, which is more correct;
		also fixed MOV64o64a to have to a 64-bit offset
	(MOV) Fixed qualifiers
	(MOV) Added debug-register and condition-register moves
	(MOVZX) Added more forms
	(ADC, SUB, SBB, AND, OR, XOR) Added reverse forms, which
		(as with MOV) are encoded differently
	(ROL) Made REX.W required
	(BT) Uncommented mr form for disassembly only
	(CVT__2__) Added several missing non-intrinsic forms
	(LXADD, XCHG) Reordered operands to make more sense for
		MRMSrcMem
	(XCHG) Added register-to-register forms
	(XADD, CMPXCHG, XCHG) Added non-locked forms
* X86InstrSSE.td
	(CVTSS2SI, COMISS, CVTTPS2DQ, CVTPS2PD, CVTPD2PS, MOVQ)
		Added
* X86InstrFPStack.td
	(COM_FST0, COMP_FST0, COM_FI, COM_FIP, FFREE, FNCLEX, FNOP,
	 FXAM, FLDL2T, FLDL2E, FLDPI, FLDLG2, FLDLN2, F2XM1, FYL2X,
	 FPTAN, FPATAN, FXTRACT, FPREM1, FDECSTP, FINCSTP, FPREM,
	 FYL2XP1, FSINCOS, FRNDINT, FSCALE, FCOMPP, FXSAVE,
	 FXRSTOR)
		Added
	(FCOM, FCOMP) Added qualifiers
	(FSTENV, FSAVE, FSTSW) Fixed opcode names
	(FNSTSW) Added implicit register operand
* X86InstrInfo.td
	(opaque512mem) Added for FXSAVE/FXRSTOR
	(offset8, offset16, offset32, offset64) Added for MOV
	(NOOPW, IRET, POPCNT, IN, BTC, BTR, BTS, LSL, INVLPG, STR,
	 LTR, PUSHFS, PUSHGS, POPFS, POPGS, LDS, LSS, LES, LFS,
	 LGS, VERR, VERW, SGDT, SIDT, SLDT, LGDT, LIDT, LLDT,
	 LODSD, OUTSB, OUTSW, OUTSD, HLT, RSM, FNINIT, CLC, STC,
	 CLI, STI, CLD, STD, CMC, CLTS, XLAT, WRMSR, RDMSR, RDPMC,
	 SMSW, LMSW, CPUID, INVD, WBINVD, INVEPT, INVVPID, VMCALL,
	 VMCLEAR, VMLAUNCH, VMRESUME, VMPTRLD, VMPTRST, VMREAD,
	 VMWRITE, VMXOFF, VMXON) Added
	(NOOPL, POPF, POPFD, PUSHF, PUSHFD) Added qualifier
	(JO, JNO, JB, JAE, JE, JNE, JBE, JA, JS, JNS, JP, JNP, JL,
	 JGE, JLE, JG, JCXZ) Added 32-bit forms
	(MOV) Changed some immediate forms to offset forms
	(MOV) Added reversed reg-reg forms, which are encoded
		differently
	(MOV) Added debug-register and condition-register moves
	(CMOV) Added qualifiers
	(AND, OR, XOR, ADC, SUB, SBB) Added reverse forms, like MOV
	(BT) Uncommented memory-register forms for disassembler
	(MOVSX, MOVZX) Added forms
	(XCHG, LXADD) Made operand order make sense for MRMSrcMem
	(XCHG) Added register-register forms
	(XADD, CMPXCHG) Added unlocked forms
* X86InstrMMX.td
	(MMX_MOVD, MMV_MOVQ) Added forms
* X86InstrInfo.cpp: Changed PUSHFQ to PUSHFQ64 to reflect table
	change

* X86RegisterInfo.td: Added debug and condition register sets
* x86-64-pic-3.ll: Fixed testcase to reflect call qualifier
* peep-test-3.ll: Fixed testcase to reflect test qualifier
* cmov.ll: Fixed testcase to reflect cmov qualifier
* loop-blocks.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-11.ll: Fixed testcase to reflect call qualifier
* 2009-11-04-SubregCoalescingBug.ll: Fixed testcase to reflect call
  qualifier
* x86-64-pic-2.ll: Fixed testcase to reflect call qualifier
* live-out-reg-info.ll: Fixed testcase to reflect test qualifier
* tail-opts.ll: Fixed testcase to reflect call qualifiers
* x86-64-pic-10.ll: Fixed testcase to reflect call qualifier
* bss-pagealigned.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-1.ll: Fixed testcase to reflect call qualifier
* widen_load-1.ll: Fixed testcase to reflect call qualifier

llvm-svn: 91638
 2009-12-18 00:01:26 +00:00
Eli Friedman 250b119d98 Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)". 
llvm-svn: 91631
 2009-12-17 22:42:29 +00:00
Eli Friedman 7cc86b4cc6 Make the ptrtoint comparison simplification work if one side is a global. 
llvm-svn: 91624
 2009-12-17 21:27:47 +00:00
Eli Friedman 5842c9968a Slightly generalize transformation of memmove(a,a,n) so that it also applies 
to memcpy. (Such a memcpy is technically illegal, but in practice is safe
and is generated by struct self-assignment in C code.)

llvm-svn: 91621
 2009-12-17 21:07:31 +00:00
Bob Wilson f3927b7994 Re-revert 91459. It's breaking the x86_64 darwin bootstrap. 
llvm-svn: 91607
 2009-12-17 18:34:24 +00:00
Mikhail Glushenkov 1fe2678a06 Add a 'set_option' action for use in OptionPreprocessor. 
llvm-svn: 91594
 2009-12-17 07:49:16 +00:00