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Author SHA1 Message Date
Chris Lattner
e390b70e2c Make some methods const. The only interesting change here is that 
it changes raw_fd_ostream::preferred_buffer_size to return zero on
a scary stat failure instead of setting the stream to an error state.
This method really should not mutate the stream.

llvm-svn: 91740
 2009-12-19 01:38:42 +00:00
John McCall
57eaeeca78 Qualify a bunch of explicit template instantiations to satisfy clang++. 
llvm-svn: 91736
 2009-12-19 00:55:12 +00:00
John McCall
fdae393452 Put TypesEqual and TypeHasCycleThroughItself in namespace llvm so ADL from 
the templates in TypesContext.h can find them.  Caught by clang++.

llvm-svn: 91735
 2009-12-19 00:51:42 +00:00
Bill Wendling
2a794804da Forgot forward declaration. 
llvm-svn: 91732
 2009-12-19 00:05:07 +00:00
Dan Gohman
4e04fb5ca8 Eliminate unnecessary LLVMContexts. 
llvm-svn: 91729
 2009-12-18 23:42:08 +00:00
Bill Wendling
aed33d79ab Changes from review: 
- Move DisableScheduling flag into TargetOption.h
- Move SDNodeOrdering into its own header file. Give it a minimal interface that
  doesn't conflate construction with storage.
- Move assigning the ordering into the SelectionDAGBuilder.

This isn't used yet, so there should be no functional changes.

llvm-svn: 91727
 2009-12-18 23:32:53 +00:00
Dan Gohman
f4af7d049c Make this comment more precise. 
llvm-svn: 91722
 2009-12-18 23:18:03 +00:00
Eli Friedman
241630ece5 Fix an issue in googletest where a name was used before it was defined. 
llvm-svn: 91718
 2009-12-18 21:38:44 +00:00
Evan Cheng
bc37151dea Increase opportunities to optimize (brcond (srl (and c1), c2)). 
llvm-svn: 91717
 2009-12-18 21:31:31 +00:00
Eli Friedman
a5dba5246a Fix gcc warning. 
llvm-svn: 91715
 2009-12-18 21:07:18 +00:00
Rafael Espindola
c58aaaf793 Catch more cases of a pointer being marked garbage twice. This helps when 
debugging some leaks (PR5770 in particular).

llvm-svn: 91713
 2009-12-18 20:35:38 +00:00
Bob Wilson
03b6955c7f 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
Bob Wilson
93f8ae1d35 Fix another parallel make race condition. 
llvm-svn: 91709
 2009-12-18 20:12:14 +00:00
Victor Hernandez
44652ca549 Formalize MDNode's function-localness: 
- an MDNode is designated as function-local when created, and continues to be even if its operands are modified not to refer to function-local IR
- function-localness is designated via lowest bit in SubclassData
- getLocalFunction() descends MDNode tree to see if it is consistently function-local

Add verification of MDNodes to checks that MDNodes are consistently function-local.
Update AsmWriter to use isFunctionLocal().

llvm-svn: 91708
 2009-12-18 20:09:14 +00:00
Daniel Dunbar
01ebbb9844 Fix Win32 Path.inc for API update. 
llvm-svn: 91706
 2009-12-18 19:59:48 +00:00
Dan Gohman
34f714b928 Revert this use of NUW/NSW also. Overflow-undefined multiplication isn't 
associative either.

llvm-svn: 91701
 2009-12-18 18:45:31 +00:00
Rafael Espindola
4f903d4548 Fix libstdc++ build on ARM linux and part of PR5770. 
MI was not being used but it was also not being deleted, so it was kept in the garbage list. The memory itself was freed once the function code gen was done.

Once in a while the codegen of another function would create an instruction on the same address. Adding it to the garbage group would work once, but when another pointer was added it would cause an assert as "Cache" was about to be pushed to Ts.

For a patch that make us detect problems like this earlier, take a look at

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20091214/092758.html

With that patch we assert as soon and the new instruction is added to the garbage set.

llvm-svn: 91691
 2009-12-18 16:59:39 +00:00
Tilmann Scheller
69e00966bb Fix wrong frame pointer save offset in the 64-bit PowerPC SVR4 ABI. 
Patch contributed by Ken Werner of IBM!

llvm-svn: 91681
 2009-12-18 13:00:34 +00:00
Tilmann Scheller
29361c46ac Add support for calls through function pointers in the 64-bit PowerPC SVR4 ABI. 
Patch contributed by Ken Werner of IBM!

llvm-svn: 91680
 2009-12-18 13:00:15 +00:00
Mikhail Glushenkov
606e829658 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
c8ab298dbd 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
d97d025eba 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
2e46566444 Revert this use of NSW; this one isn't actually safe. NSW addition 
is not reassociative.

llvm-svn: 91667
 2009-12-18 03:57:04 +00:00
Dan Gohman
87a4da3d59 Eliminte unnecessary uses of <cstdio>. 
llvm-svn: 91666
 2009-12-18 03:25:51 +00:00
Dan Gohman
3ceb7c0c47 Add utility routines for NSW multiply. 
llvm-svn: 91664
 2009-12-18 03:10:26 +00:00
Dan Gohman
6bb50740f4 Add utility routines for creating integer negation operators with NSW set. 
Integer negation only overflows with INT_MIN, but that's an important case.

llvm-svn: 91662
 2009-12-18 02:58:50 +00:00
Dan Gohman
ec766ea441 Delete an unused variable. 
llvm-svn: 91659
 2009-12-18 02:14:37 +00:00
Eric Christopher
0253008d0c Fix typo. 
llvm-svn: 91657
 2009-12-18 02:12:53 +00:00
Dan Gohman
91b1161840 Preserve NSW information in more places. 
llvm-svn: 91656
 2009-12-18 02:09:29 +00:00
Evan Cheng
a647318eb3 Re-apply 91623 now that I actually know what I was trying to do. 
llvm-svn: 91655
 2009-12-18 01:59:21 +00:00
Dan Gohman
0f8f7f179d Add Loop contains utility methods for testing whether a loop 
contains another loop, or an instruction. The loop form is
substantially more efficient on large loops than the typical
code it replaces.

llvm-svn: 91654
 2009-12-18 01:24:09 +00:00
Dan Gohman
66a17c5ce2 Minor code simplification. 
llvm-svn: 91653
 2009-12-18 01:20:44 +00:00
Dan Gohman
7c0f6a6c1b Whitespace cleanups. 
llvm-svn: 91651
 2009-12-18 01:14:11 +00:00
Dan Gohman
d97f165eb2 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
a9f20f9f6e 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
c382d6519c 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
Dan Gohman
3ea233d1f2 Don't pass const pointers by reference. 
llvm-svn: 91647
 2009-12-18 00:38:08 +00:00
Dan Gohman
dcf5423e51 Update a comment. 
llvm-svn: 91645
 2009-12-18 00:28:43 +00:00
John McCall
923cb2d8d7 Pass the error string directly to llvm_unreachable instead of the residual 
(0 && "error").  Rough consensus seems to be that g++ *should* be diagnosing
this because the pointer makes it not an ICE in c++03.  Everyone agrees that
the current standard is silly and null-pointer-ness should not be based on
ICE-ness.  Excellent fight scene in Act II, denouement weak, two stars.

llvm-svn: 91644
 2009-12-18 00:27:18 +00:00
Jakob Stoklund Olesen
b39930cf6d Add test case for the phi reuse patch. 
llvm-svn: 91642
 2009-12-18 00:11:44 +00:00
Dan Gohman
c483bed5e8 Reapply LoopStrengthReduce and IVUsers cleanups, excluding the part 
of 91296 that caused trouble -- the Processed list needs to be
preserved for the livetime of the pass, as AddUsersIfInteresting
is called from other passes.

llvm-svn: 91641
 2009-12-18 00:06:20 +00:00
Sean Callanan
06b6feb2e1 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
John McCall
27b47abb40 Sundry dependent-name fixes flagged by clang++. 
llvm-svn: 91636
 2009-12-17 23:49:16 +00:00
Bill Wendling
747a2ba2a1 Revert accidental commit. 
llvm-svn: 91635
 2009-12-17 23:45:18 +00:00
Bill Wendling
2911fdb37b Turn off critical edge splitting for landing pads. The introduction of a 
non-landing pad basic block as the successor to a block that ends in an
unconditional jump will cause block folding to remove the added block as a
successor. Thus eventually removing it AND the landing pad entirely. Critical
edge splitting is an optimization, so we can safely turn it off when dealing
with landing pads.

llvm-svn: 91634
 2009-12-17 23:42:32 +00:00
Jeffrey Yasskin
f39a138a7c Revert r91623 to unbreak the buildbots. 
llvm-svn: 91632
 2009-12-17 22:44:34 +00:00
Eli Friedman
9543d05079 Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)". 
llvm-svn: 91631
 2009-12-17 22:42:29 +00:00
Jeffrey Yasskin
f4d06414ec Don't codegen available_externally functions. Fixes http://llvm.org/PR5735. 
llvm-svn: 91626
 2009-12-17 21:35:29 +00:00
Eli Friedman
8afea2d095 Make the ptrtoint comparison simplification work if one side is a global. 
llvm-svn: 91624
 2009-12-17 21:27:47 +00:00
Evan Cheng
d765952b17 Remove an unused option. 
llvm-svn: 91623
 2009-12-17 21:23:58 +00:00