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34612 Commits

Author SHA1 Message Date
Dan Gohman
3a5d409f3c Revert this use of NSW; this one isn't actually safe. NSW addition 
is not reassociative.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91667 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 03:57:04 +00:00
Dan Gohman
ad12b2698b Eliminte unnecessary uses of <cstdio>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91666 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 03:25:51 +00:00
Dan Gohman
411984810e Add utility routines for NSW multiply. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91664 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 03:10:26 +00:00
Dan Gohman
bdc46c6af5 Add utility routines for creating integer negation operators with NSW set. 
Integer negation only overflows with INT_MIN, but that's an important case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91662 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 02:58:50 +00:00
Dan Gohman
2df72c1441 Delete an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91659 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 02:14:37 +00:00
Eric Christopher
5e63990271 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91657 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 02:12:53 +00:00
Dan Gohman
d281ed2d03 Preserve NSW information in more places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91656 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 02:09:29 +00:00
Evan Cheng
c7928f8f4e Re-apply 91623 now that I actually know what I was trying to do. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91655 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:59:21 +00:00
Dan Gohman
92329c7fbe 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91654 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:24:09 +00:00
Dan Gohman
3ca735450d Minor code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91653 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:20:44 +00:00
Dan Gohman
5d984917a4 Whitespace cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91651 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:14:11 +00:00
Bob Wilson
5afffaed5c 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91649 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:03:29 +00:00
Dan Gohman
6a27e1550d Don't pass const pointers by reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91647 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:38:08 +00:00
Dan Gohman
34d2b90d09 Update a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91645 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:28:43 +00:00
John McCall
c226fe3c3e 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91644 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:27:18 +00:00
Dan Gohman
6bec5bb344 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91641 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:06:20 +00:00
Sean Callanan
108934c65d 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91638 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:01:26 +00:00
John McCall
a692313103 Sundry dependent-name fixes flagged by clang++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91636 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 23:49:16 +00:00
Bill Wendling
6532ff889c Revert accidental commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91635 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 23:45:18 +00:00
Bill Wendling
3de8249078 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91634 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 23:42:32 +00:00
Jeffrey Yasskin
08ce53996e Revert r91623 to unbreak the buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91632 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 22:44:34 +00:00
Eli Friedman
b17cb06c35 Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91631 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 22:42:29 +00:00
Jeffrey Yasskin
aad0d52c5b Don't codegen available_externally functions. Fixes http://llvm.org/PR5735. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91626 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:35:29 +00:00
Eli Friedman
8e4b197e0b Make the ptrtoint comparison simplification work if one side is a global. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91624 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:27:47 +00:00
Evan Cheng
73ebbd8aac Remove an unused option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91623 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:23:58 +00:00
Eli Friedman
0c826d98b3 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.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91621 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:07:31 +00:00
Jeffrey Yasskin
88cd3582b6 Make Path use StringRef instead of std::string where possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91620 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:02:39 +00:00
Bill Wendling
aeb79aea8f Temporarily revert 91337. It's causing testcase failures. 
$ svn merge -c -91337 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91337 into '.':
U    lib/CodeGen/AsmPrinter/DwarfException.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91618 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 20:41:01 +00:00
Ken Dyck
bceddbdc91 Introduce EVT::getHalfSizedIntegerVT() for use in ExpandUnalignedStore() in 
LegalizeDAG.cpp. Unlike the code it replaces, which simply decrements the simple
type by one, getHalfSizedIntegerVT() searches for the smallest simple integer
type that is at least half the size of the type it is called on. This approach
has the advantage that it will continue working if a new value type (such as
i24) is added to MVT.

Also, in preparation for new value types, remove the assertions that
non-power-of-2 8-bit-mutiple types are Extended when legalizing extload and
truncstore operations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91614 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 20:09:43 +00:00
Chris Lattner
551dec592f finish cleaning up StructLayoutMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91612 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 20:00:21 +00:00
Jeffrey Yasskin
ad715f86c9 This fixes a memory leak in OpaqueType found by Google's internal heapchecker. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91611 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 19:55:06 +00:00
Bob Wilson
39c88a641b Re-revert 91459. It's breaking the x86_64 darwin bootstrap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91607 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 18:34:24 +00:00
Evan Cheng
2013e2c6bd Remove debugging code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91604 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 18:03:12 +00:00
Ken Dyck
70d0ef1459 In LowerEXTRACT_VECTOR_ELT, force an i32 value type for PEXTWR instead of 
incrementing the simple value type of the 16-bit type, which would give the
wrong type if an intemediate MVT (such as i24) were introduced.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91602 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 15:31:52 +00:00
Evan Cheng
04149f7ffd Revert 91280-91283, 91286-91289, 91291, 91293, 91295-91296. It apparently introduced a non-deterministic behavior in the optimizer somewhere. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91598 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 09:39:49 +00:00
Eli Friedman
e8e17833be Aggressively flip compare constant expressions where appropriate; constant 
folding in particular expects null to be on the RHS.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91587 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 06:07:04 +00:00
Bob Wilson
266d945fff Fix a comment grammaro. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91584 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 05:07:36 +00:00
Evan Cheng
4c2b001f13 Revert this dag combine change: 
Fold (zext (and x, cst)) -> (and (zext x), cst)

DAG combiner likes to optimize expression in the other way so this would end up cause an infinite looping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91574 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 00:40:05 +00:00
Johnny Chen
caedfbc6ae Renamed "tCMNZ" to "tCMNz" to be consistent with other similar namings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91571 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 23:36:52 +00:00
John McCall
6eeccd4aa4 Silence a clang warning about the deprecated (but perfectly reasonable in 
context) increment-of-bool idiom.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91564 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 20:31:50 +00:00
Daniel Dunbar
819309efec Reapply r91392, it was only unmasking the bug, and since TOT is still broken having it reverted does no good. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91560 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 20:10:05 +00:00
Daniel Dunbar
2674089cef Reapply r91459, it was only unmasking the bug, and since TOT is still broken having it reverted does no good. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91559 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 20:09:53 +00:00
Jim Grosbach
587b072f23 Mark STREX* as earlyclobber for the success result register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91555 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 19:44:06 +00:00
Jim Grosbach
06801722a4 Add @earlyclobber TableGen constraint 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91554 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 19:43:02 +00:00
Jakob Stoklund Olesen
74215fc29f Reuse lowered phi nodes. 
Tail duplication produces lots of identical phi nodes in different basic
blocks. Teach PHIElimination to reuse the join registers when lowering a phi
node that is identical to an already lowered node. This saves virtual
registers, and more importantly it avoids creating copies the the coalescer
doesn't know how to eliminate.

Teach LiveIntervalAnalysis about the phi joins with multiple uses.

This patch significantly reduces code size produced by -pre-regalloc-taildup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91549 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 18:55:53 +00:00
Daniel Dunbar
fca55c8ac7 Revert "Reapply 91184 with fixes and an addition to the testcase to cover the 
problem", this broke llvm-gcc bootstrap for release builds on
x86_64-apple-darwin10.

This reverts commit db22309800b224a9f5f51baf76071d7a93ce59c9.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91534 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 10:56:17 +00:00
Daniel Dunbar
222518d0bb Revert "Initial work on disabling the scheduler. This is a work in progress, and 
this", this broke llvm-gcc bootstrap for release builds on
x86_64-apple-darwin10.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91533 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 10:56:02 +00:00
Chris Lattner
24604110ef reapply my strstr optimization. I have reproduced the x86-64 bootstrap 
miscompile (i386.o miscompares) but it happens both with and without
this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91532 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 09:32:05 +00:00
Chris Lattner
b3649db102 now that libsystem no longer uses SmallVector, we can move 
SmallVectorBase::grow_pod out of line, finally satisfying PR3758.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91529 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 08:44:24 +00:00
Chris Lattner
dc5138d81f remove use of SmallVector from Path::makeUnique. Path::makeUnique 
is not used by anything performance sensitive, so just use std::string.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91528 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 08:40:44 +00:00
Chris Lattner
e4b0cd2856 eliminate an extraneous use of SmallVector in a case where 
a fixed size buffer is perfectly fine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91527 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 08:35:54 +00:00
Victor Hernandez
6bc2b8b215 Use different name for argument and field 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91524 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 08:10:57 +00:00
Victor Hernandez
57c0f20601 MDNodes that refer to an instruction are local to a function; in that case, explicitly keep track of the function they are local to 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91497 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 02:52:09 +00:00
Johnny Chen
bbc71b2904 Add encoding bits for some Thumb instructions. Plus explicitly set the top two 
bytes of Inst to 0x0000 for the benefit of the Thumb decoder.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91496 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 02:32:54 +00:00
Evan Cheng
2e489c4f9d Re-enable 91381 with fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91489 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:53:11 +00:00
Chris Lattner
0001517d9d revert my strstr optimization, I'm told it breaks x86-64 bootstrap. 
Will reapply with a fix when I get a chance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91486 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:46:02 +00:00
Dale Johannesen
fc49bd2447 Do better with physical reg operands (typically, from inline asm) 
in local register allocator.  If a reg-reg copy has a phys reg
input and a virt reg output, and this is the last use of the phys
reg, assign the phys reg to the virt reg.  If a reg-reg copy has
a phys reg output and we need to reload its spilled input, reload
it directly into the phys reg than passing it through another reg.

Following 76208, there is sometimes no dependency between the def of
a phys reg and its use; this creates a window where that phys reg
can be used for spilling (this is true in linear scan also).  This
is bad and needs to be fixed a better way, although 76208 works too
well in practice to be reverted.  However, there should normally be
no spilling within inline asm blocks.  The patch here goes a long way
towards making this actually be true.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91485 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:29:41 +00:00
John McCall
bd13cb911c Every anonymous namespace is different. Caught by clang++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91481 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:15:28 +00:00
John McCall
f32616e0bd Explicit template instantiations must happen in the template's immediately 
enclosing namespace.  Caught by clang++.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91480 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:13:24 +00:00
Bill Wendling
c70d331151 Helpful comment added. Some code cleanup. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91479 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:08:36 +00:00
Bill Wendling
fe586b3e38 Initialize uninitialized variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91477 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:01:27 +00:00
Bill Wendling
408e9d166a Initialize uninitialized variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91475 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:00:18 +00:00
Jeffrey Yasskin
32d7e6ebde Change indirect-globals to use a dedicated allocIndirectGV. This lets us 
remove start/finishGVStub and the BufferState helper class from the
MachineCodeEmitter interface.  It has the side-effect of not setting the
indirect global writable and then executable on ARM, but that shouldn't be
necessary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91464 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 22:42:46 +00:00
Bob Wilson
970eaf2520 Reapply 91184 with fixes and an addition to the testcase to cover the problem 
found last time.  Instead of trying to modify the IR while iterating over it,
I've change it to keep a list of WeakVH references to dead instructions, and
then delete those instructions later.  I also added some special case code to
detect and handle the situation when both operands of a memcpy intrinsic are
referencing the same alloca.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91459 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 22:00:51 +00:00
Chris Lattner
524528e614 Fix GetConstantStringInfo to not look into MDString (it works on 
real data, not metadata) and fix DbgInfoPrinter to not abuse
GetConstantStringInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91444 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 19:34:20 +00:00
Devang Patel
6404e4e795 Add support to emit debug info for C++ namespaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91440 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 19:16:48 +00:00
Chris Lattner
ad6b1fdaf9 optimize strstr, PR5783 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91438 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 19:14:40 +00:00
Johnny Chen
d68e119c0f Added encoding bits for the Thumb ISA. Initial checkin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91434 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 17:24:14 +00:00
Dan Gohman
a0cefcfcac Delete an unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91432 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 16:30:09 +00:00
Chris Lattner
099b41f342 add some other xforms that should be done as part of PR5783 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91428 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 09:05:13 +00:00
Chris Lattner
4bbf4ee149 Remove isPod() from DenseMapInfo, splitting it out to its own 
isPodLike type trait.  This is a generally useful type trait for
more than just DenseMap, and we really care about whether something
acts like a pod, not whether it really is a pod.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91421 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 07:26:43 +00:00
Evan Cheng
dba6cac0d4 Fix an encoding bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91417 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 06:49:02 +00:00
Kenneth Uildriks
76df3f398c For fastcc on x86, let ECX be used as a return register after EAX and EDX 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91410 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:27:52 +00:00
Evan Cheng
d7760a4905 Disable 91381 for now. It's miscompiling ARMISelDAG2DAG.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91405 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:07:11 +00:00
Evan Cheng
9818c043d2 Make 91378 more conservative. 
1. Only perform (zext (shl (zext x), y)) -> (shl (zext x), y) when y is a constant. This makes sure it remove at least one zest.
2. If the shift is a left shift, make sure the original shift cannot shift out bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91399 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:00:32 +00:00
John McCall
bc8858c3b0 You can't use typedefs to declare template member specializations, and 
clang enforces it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91397 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 02:35:24 +00:00
Bill Wendling
614407a9d2 Initial work on disabling the scheduler. This is a work in progress, and this 
stuff isn't used just yet.

We want to model the GCC `-fno-schedule-insns' and `-fno-schedule-insns2'
flags. The hypothesis is that the people who use these flags know what they are
doing, and have hand-optimized the C code to reduce latencies and other
conflicts.

The idea behind our scheme to turn off scheduling is to create a map "on the
side" during DAG generation. It will order the nodes by how they appeared in the
code. This map is then used during scheduling to get the ordering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91392 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 01:54:51 +00:00
Evan Cheng
3466f13f38 Tail duplication should zap a copy it inserted for SSA update if the copy is the only use of its source. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91390 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 01:44:10 +00:00
Evan Cheng
ad9c0a3d8b Use sbb x, x to materialize carry bit in a GPR. The result is all one's or all zero's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91381 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:53:42 +00:00
Evan Cheng
8acb3100de Fold (zext (and x, cst)) -> (and (zext x), cst). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91380 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:52:11 +00:00
Evan Cheng
99b653c36f Propagate zest through logical shift. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91378 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:41:36 +00:00
Eric Christopher
0c479d3c6b Formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91377 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:40:55 +00:00
Bill Wendling
43cf6c3939 Revert these. They may have been causing 483_xalancbmk to fail: 
$ svn merge -c -91161 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91161 into '.':
U    lib/CodeGen/BranchFolding.cpp
U    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91113 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91113 into '.':
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91101 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91101 into '.':
U    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91092 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91092 into '.':
G    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91376 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:39:24 +00:00
Jim Grosbach
c67b556b5b nand atomic requires opposite operand ordering 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91371 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:12:35 +00:00
Dan Gohman
2e141d744e Fix integer cast code to handle vector types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 23:40:38 +00:00
Dan Gohman
688fb80334 Fix this to properly clear the FastISel debug location. Thanks to 
Bill for spotting this!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91355 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 23:08:09 +00:00
Johnny Chen
ec689151f2 Add encoding bits "let Inst{11-4} = 0b00000000;" to BR_JTr to disambiguate 
between BR_JTr and STREXD.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91339 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 21:51:34 +00:00
Bill Wendling
f8084fb1e1 The CIE says that the LSDA point in the FDE section is an "sdata4". That's fine, 
but we need it to actually be 4-bytes in the FDE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91337 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 21:49:44 +00:00
Jim Grosbach
80dd125e17 v6 sync insn copy/paste error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91333 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 21:33:32 +00:00
Jim Grosbach
7c03dbd8ed Add ARMv6 memory and sync barrier instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91329 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 21:24:16 +00:00
Johnny Chen
c474796438 Fixed encoding bits typo of ldrexd/strexd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91327 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 21:01:46 +00:00
Jim Grosbach
a36c8f2c2e Thumb2 atomic operations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91321 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 20:14:59 +00:00
Dan Gohman
eda23faedb Move several function bodies which are rarely inlined out of line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91319 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 19:43:09 +00:00
Chris Lattner
cdfb302876 fix an obvious bug found by clang++ and collapse a redundant if. 
Here's the diagnostic from clang:

/Volumes/Data/dgregor/Projects/llvm/lib/Target/CppBackend/CPPBackend.cpp:989:23: warning: 'gv' is always NULL in this context
        printConstant(gv);
                      ^
1 diagnostic generated.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91318 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 19:34:32 +00:00
Dan Gohman
a4f8ecd85d Micro-optimize these functions in the case where they are not inlined. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91316 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 19:32:31 +00:00
Jim Grosbach
a623f5a58d correct selection requirements for thumb2 vs. arm versions of the barrier intrinsics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91313 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 19:24:11 +00:00
Jim Grosbach
c219e4dd59 add Thumb2 atomic and memory barrier instruction definitions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91310 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 18:56:47 +00:00
Jim Grosbach
015d3b5704 whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91307 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 18:36:32 +00:00
Jim Grosbach
f6b2862e81 ARM memory barrier instructions are not predicable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91305 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 18:31:20 +00:00
Dan Gohman
e2f65ee4b1 Clear the Processed set when it is no longer used, and clear the 
IVUses list in releaseMemory().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91296 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:35:17 +00:00
Dan Gohman
30844c3950 Fix a thinko; isNotAlreadyContainedIn had a built-in negative, so the 
condition was inverted when the code was converted to contains().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91295 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:31:01 +00:00
Dan Gohman
c71c0e958c Remove unnecessary #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91293 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:19:06 +00:00
Dan Gohman
d3222b4224 Instead of having a ScalarEvolution pointer member in BasedUser, just pass 
the ScalarEvolution pointer into the functions which need it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91289 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:12:51 +00:00
Dan Gohman
a77d588c75 Don't bother cleaning up if there's nothing to clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91288 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:10:44 +00:00
Dan Gohman
6dc1ef3923 Delete an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91287 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:08:09 +00:00
Dan Gohman
440b40d865 Drop Loop::isNotAlreadyContainedIn in favor of Loop::contains. The 
former was just exposing a LoopInfoBase implementation detail.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91286 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:06:50 +00:00
Jim Grosbach
d7d72d66b7 add ldrexd/strexd instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91284 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:02:55 +00:00
Dan Gohman
1ed8bb3556 LSR itself doesn't need LoopInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91283 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 17:02:34 +00:00
Dan Gohman
c398365349 LSR itself doesn't need DominatorTree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91282 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 16:57:08 +00:00
Dan Gohman
67b94fb73d Remove the code in LSR that manually hoists expansions out of loops; 
SCEVExpander does this automatically.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91281 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 16:52:55 +00:00
Dan Gohman
b058ceda56 Minor code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91280 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 16:37:29 +00:00
Devang Patel
ffe966c15b Use DW_AT_specification to point to DIE describing function declaration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91278 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 16:18:45 +00:00
Torok Edwin
546d8d0e3e Add "generic" fallback. 
gcc warned that the function may not have a return value, indeed
for non-intel and non-amd X86 CPUs it is right (VIA, etc.).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91276 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 12:38:18 +00:00
Lang Hames
94a4a5eec6 Added CalcSpillWeights to CMakeLists. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91275 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 07:43:25 +00:00
Bill Wendling
85de1e5bad Whitespace changes, comment clarification. No functional changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91274 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 06:51:19 +00:00
Lang Hames
a937f220e1 Moved spill weight calculation out of SimpleRegisterCoalescing and into its own pass: CalculateSpillWeights. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91273 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 06:49:42 +00:00
Chris Lattner
a59adc4015 revert r91184, because it causes a crash on a .bc file I just 
sent to Bob.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91268 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 05:11:02 +00:00
Jim Grosbach
c3c2354ec9 atomic binary operations up to 32-bits wide. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91260 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 04:22:04 +00:00
Jeffrey Yasskin
898e9df8db Reinstate r91208 to fix available_externally linkage for globals, with 
nlewycky's fix to add -rdynamic so the JIT can look symbols up in Linux builds
of the JITTests binary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91250 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-13 20:30:32 +00:00
Torok Edwin
c4174d675b Using _MSC_VER there was wrong, better just use the already existing ifdefs for 
x86 CPU detection for the X86 getHostCPUName too, and create a simple
getHostCPUName that returns "generic" for all else.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91240 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-13 08:59:40 +00:00
Chandler Carruth
0daf77e803 Don't leave pointers uninitialized in the default constructor. GCC complains 
about the potential use of these uninitialized members under certain conditions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91239 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-13 07:04:45 +00:00
Anton Korobeynikov
60283f9bc9 Fix weird typo which leads to unallocated memory access for nodes with 4 results. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91233 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-13 01:00:59 +00:00
Anton Korobeynikov
cdcad11c94 Do not allow uninitialize access during debug printing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91232 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-13 01:00:32 +00:00
Eli Friedman
bcae205a4b More info on this transformation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91230 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 23:23:43 +00:00
Eli Friedman
1555473387 Remove some stuff that's already implemented. Also, remove the note about 
merging x >u 5 and x <s 20 because it's impossible to implement.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91228 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 21:41:48 +00:00
Evan Cheng
dd99f3a7dc Disable r91104 for x86. It causes partial register stall which pessimize code in 32-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91223 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 20:03:14 +00:00
Anton Korobeynikov
2625de35ed Implement variable-width shifts. 
No testcase yet - it seems we're exposing generic codegen bugs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91221 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 18:55:37 +00:00
Evan Cheng
04ab19cb14 Add comment about potential partial register stall. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91220 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 18:55:26 +00:00
Evan Cheng
15b0d97068 Fix an obvious bug. No test case since LEA16r is not being used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91219 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 18:51:56 +00:00
Torok Edwin
da8bafbf83 Enable CPU detection when using MS VS 2k8 too. 
MSVS2k8 doesn't define __i386__, hence all the CPU detection code was disabled.
Enable it by looking for _MSC_VER.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91217 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 12:42:31 +00:00
Jeffrey Yasskin
9b8ff28870 Revert r91208. Something on Linux prevents the JIT from looking up a symbol 
defined in the test, and I don't have time tonight to figure it out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91209 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 06:18:46 +00:00
Jeffrey Yasskin
5cc966a6c1 Fix available_externally linkage for globals. It's probably still not 
supported by emitGlobals, but I don't have a test case for that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91208 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 05:58:14 +00:00
Jim Grosbach
e801dc4a7b Framework for atomic binary operations. The emitter for the pseudo instructions 
just issues an error for the moment. The front end won't yet generate these
intrinsics for ARM, so this is behind the scenes until complete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91200 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 01:40:06 +00:00
Bob Wilson
73a1b67cb9 Revise scalar replacement to be more flexible about handle bitcasts and GEPs. 
While scanning through the uses of an alloca, keep track of the current offset
relative to the start of the alloca, and check memory references to see if
the offset & size correspond to a component within the alloca.  This has the
nice benefit of unifying much of the code from isSafeUseOfAllocation,
isSafeElementUse, and isSafeUseOfBitCastedAllocation.  The code to rewrite
the uses of a promoted alloca, after it is determined to be safe, is
reorganized in the same way.

Also, when rewriting GEP instructions, mark them as "in-bounds" since all the
indices are known to be safe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91184 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:47:40 +00:00
Dan Gohman
a0474a83bf Delete an unnecessary line. The VTSDNode on a SIGN_EXTEND_REG is never 
a vector type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91181 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:26:08 +00:00
Anton Korobeynikov
8d1ffbd1ad Lower setcc branchless, if this is profitable. 
Based on the patch by Brian Lucas!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91175 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:01:29 +00:00
Bill Wendling
c42a0b75a4 Don't try to move a MBB into the fall-through position if it's a landing pad or 
branches only to a landing pad. Without this check, the compiler would go into
an infinite loop because the branch to a landing pad is an "abnormal" edge which
wasn't being taken into account.

This is the meat of that fix:

  if (!PrevBB.canFallThrough() && !MBB->BranchesToLandingPad(MBB)) {

The other stuff is simplification of the "branches to a landing pad" code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91161 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 21:47:36 +00:00
Devang Patel
d037d7a497 Construct CompileUnits lazily. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91159 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 21:37:07 +00:00
Dan Gohman
87862e77bb Implement vector widening, splitting, and scalarizing for SIGN_EXTEND_INREG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91158 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 21:31:27 +00:00
Jim Grosbach
c8f9e4fdc5 memory barrier instructions by definition have side effects. This prevents the post-RA scheduler from moving them around. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91150 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 20:29:53 +00:00
Dan Gohman
050959cd08 Make getUniqueExitBlocks's precondition assert more precise, to 
avoid spurious failures. This fixes PR5758.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91147 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 20:05:23 +00:00
Dan Gohman
a4f9cc4e55 Fix the result type of SELECT nodes lowered from Select instructions with 
aggregate return values. This fixes PR5754.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91145 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:50:50 +00:00
Anton Korobeynikov
817a46454a Honour setHasCalls() set from isel. 
This is used in some weird cases like general dynamic TLS model.
This fixes PR5723

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91144 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:39:55 +00:00
Johnny Chen
0291d7ed09 Store Register Exclusive should leave the source register Inst{3-0} unspecified. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91143 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:37:26 +00:00
Jim Grosbach
66869104dd Update properties. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91140 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 18:52:41 +00:00
Bill Wendling
a288b2f43a Revert part of r91101 which was causing an infinite loop in the self-hosting 
build bots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91113 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 10:43:41 +00:00
Duncan Sands
be1ce0a867 Add utility method for determining whether a function argument 
has the 'nest' attribute.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91109 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 08:36:17 +00:00
Evan Cheng
656e51454a Add support to 3-addressify 16-bit instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91104 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 06:01:48 +00:00
Evan Cheng
ac94863a1c Coalesce insert_subreg undef, x first to avoid phase ordering issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91103 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 06:01:00 +00:00
Bill Wendling
64bdde2093 Address comments on last patch: 
- Loosen the restrictions when checking of it branches to a landing pad.
- Make the loop more efficient by checking the '.insert' return value.
- Do cheaper checks first.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91101 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 03:14:18 +00:00