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Author SHA1 Message Date
Jakob Stoklund Olesen 0d642824d6 Revert functional change. This broke a bunch of tests. 
llvm-svn: 95921
 2010-02-11 21:19:44 +00:00
Chris Lattner 2a34015abc switch to target-indep fixups for 1/2/4/8 byte data. 
llvm-svn: 95920
 2010-02-11 21:17:54 +00:00
Devang Patel c07f1f4f7b revert 95903. 
llvm-svn: 95918
 2010-02-11 20:58:56 +00:00
Jakob Stoklund Olesen 28139f0043 It is always good to do a cross-class join when the large register has a tiny interval. 
Also avoid division by zero.

llvm-svn: 95917
 2010-02-11 20:58:45 +00:00
Johnny Chen af88c0a84d Added LDRT/LDRBT/STRT/STRBT for disassembly only. 
llvm-svn: 95916
 2010-02-11 20:31:08 +00:00
Chris Lattner 1f298326b0 unbreak the build. 
llvm-svn: 95915
 2010-02-11 19:52:11 +00:00
Devang Patel 11ddc679ca Destroy MDNodes while destructing llvm context. 
llvm-svn: 95903
 2010-02-11 19:35:10 +00:00
Chris Lattner 2b0a7a2592 refactor the conditional jump instructions in the .td file to 
use a multipattern that generates both the 1-byte and 4-byte 
versions from the same defm

llvm-svn: 95901
 2010-02-11 19:25:55 +00:00
Johnny Chen 3964059a16 Forgot to also check in this file for vcvt (floating-point <-> fixed-point, VFP). 
Sorry!

llvm-svn: 95892
 2010-02-11 18:47:03 +00:00
Dale Johannesen 177ced3953 Allow for more than one DBG_VALUE targeting the 
same dead instruction.

llvm-svn: 95890
 2010-02-11 18:23:23 +00:00
Dale Johannesen 12565de705 Don't allow DBG_VALUE to affect codegen. 
llvm-svn: 95889
 2010-02-11 18:22:31 +00:00
Johnny Chen 2588efd071 Added VCVT (between floating-point and fixed-point, VFP) for disassembly. 
A8.6.297

llvm-svn: 95885
 2010-02-11 18:17:16 +00:00
Johnny Chen f40b8e03fb Added BKPT/tBKPT (breakpoint) to the instruction table for disassembly purpose. 
llvm-svn: 95884
 2010-02-11 18:12:29 +00:00
Jakob Stoklund Olesen 45396438c3 Use array_pod_sort instead of std::sort for improved code size. 
Use SmallVector instead of std::vector for better speed when indirectbr has
few successors.

llvm-svn: 95879
 2010-02-11 18:06:56 +00:00
Eric Christopher cccdc13662 Make sure that ConstantExpr offsets also aren't off of extern 
symbols.

Thanks to Duncan Sands for the testcase!

llvm-svn: 95877
 2010-02-11 17:44:04 +00:00
Johnny Chen 9c13dfb5dd Add pseudo instruction TRAP for disassembly, which is encoded according to A5-21 
as the "Permanently UNDEFINED" instruction.

llvm-svn: 95873
 2010-02-11 17:14:31 +00:00
Bill Wendling 243e1f21db Use .empty() instead of .size(). 
llvm-svn: 95871
 2010-02-11 10:37:57 +00:00
Chris Lattner fbf1f02fee dont' call getX86RegNum on X86::RIP, it doesn't like that. This 
fixes the remaining x86-64 jit failures afaik.

llvm-svn: 95867
 2010-02-11 08:45:56 +00:00
Chris Lattner 5a4ec879bf fix a really nasty bug I introduced in r95693: r12 (and r12d, 
r12b, etc) also encodes to a R/M value of 4, which is just
as illegal as ESP/RSP for the non-sib version an address.

This fixes x86-64 jit miscompilations of a bunch of programs.

llvm-svn: 95866
 2010-02-11 08:41:21 +00:00
Chris Lattner 6bb2463f85 Add and commonize encoder support for all immediates. 
Stub out some dummy fixups to make things work.

We can now emit fixups like this:
	subl	$20, %esp               ## encoding: [0x83,0xec,A]
                                        ##   fixup A - offset: 2, value: 20, kind: fixup_1byte_imm

Emitting $20 as a single-byte fixup to be later resolved
by the assembler is ridiculous of course (vs just emitting
the byte) but this is a failure of the matcher, which 
should be producing an imm of 20, not an MCExpr of 20.

llvm-svn: 95860
 2010-02-11 07:06:31 +00:00
Chris Lattner 167842f90b generalize EmitDisplacementField to work with any size 
and rename it to EmitImmediate.

llvm-svn: 95859
 2010-02-11 06:54:23 +00:00
Chris Lattner 3555993312 eliminate the dead IsPCRel argument. 
llvm-svn: 95858
 2010-02-11 06:51:36 +00:00
Chris Lattner 5a40e6c95c eliminate the dead "PCAdj" logic. 
llvm-svn: 95857
 2010-02-11 06:49:52 +00:00
Jeffrey Yasskin c660b23075 Fix some of the memcheck errors found in the JIT unittests. 
llvm-svn: 95856
 2010-02-11 06:41:30 +00:00
Chris Lattner 4e8137d678 Rename ValueRequiresCast to ShouldOptimizeCast, to better reflect 
what it does.  Enhance it to return false to optimizing vector
sign extensions from vector comparisions, which is the idiom used
to get a splatted vector for a vector comparison.

Doing this breaks vector-casts.ll, add some compensating 
transformations to handle the important case they cover without
depending on this canonicalization.

This fixes rdar://7434900 a serious pessimization of vector compares.

llvm-svn: 95855
 2010-02-11 06:26:33 +00:00
Chris Lattner c053cbbc4d Make DSE only scan blocks that are reachable from the entry 
block.  Other blocks may have pointer cycles that will crash
basicaa and other alias analyses.  In any case, there is no
point wasting cycles optimizing dead blocks.  This fixes 
rdar://7635088

llvm-svn: 95852
 2010-02-11 05:11:54 +00:00
Chris Lattner d924f63692 Make jump threading honor x|undef -> true and x&undef -> false, 
instead of considering x|undef -> x, which may not be true.

llvm-svn: 95850
 2010-02-11 04:40:44 +00:00
Eric Christopher 531ea566a6 Add ConstantExpr handling to Intrinsic::objectsize lowering. 
Update testcase accordingly now that we can optimize another
section.

llvm-svn: 95846
 2010-02-11 01:48:54 +00:00
Bill Wendling 7c2005aa6d Fix to get it to compile. 
llvm-svn: 95840
 2010-02-11 01:15:27 +00:00
Bill Wendling 6034260c43 Don't print out a default newline when emitting the section offset. There are 
almost always comments afterwards that need printing.

llvm-svn: 95839
 2010-02-11 01:13:02 +00:00
Jeffrey Yasskin e0913883b7 Make it possible to create multiple JIT instances at the same time, by removing 
the global TheJIT and TheJITResolver variables.  Lazy compilation is supported
by a global map from a stub address to the JITResolver that knows how to
compile it.

Patch by Olivier Meurant!

llvm-svn: 95837
 2010-02-11 01:07:39 +00:00
Jakob Stoklund Olesen 75521cab3e Reuse operand location when updating PHI instructions. 
Calling RemoveOperand is very expensive on huge PHI instructions. This makes
early tail duplication run twice as fast on the Firefox JavaScript
interpreter.

llvm-svn: 95832
 2010-02-11 00:34:33 +00:00
Jakob Stoklund Olesen 896428d630 Remove duplicate successors from indirectbr instructions before building the machine CFG. 
This makes early tail duplication run 60 times faster when compiling the Firefox
JavaScript interpreter, see PR6186.

llvm-svn: 95831
 2010-02-11 00:34:18 +00:00
Devang Patel 03936a1880 Ignore dbg info intrinsics. 
llvm-svn: 95828
 2010-02-11 00:20:49 +00:00
Mon P Wang 5b77f0dac1 The previous fix of widening divides that trap was too fragile as it depends on custom 
lowering and requires that certain types exist in ValueTypes.h.  Modified widening to
check if an op can trap and if so, the widening algorithm will apply only the op on
the defined elements.  It is safer to do this in widening because the optimizer can't
guarantee removing unused ops in some cases.

llvm-svn: 95823
 2010-02-10 23:37:45 +00:00
Dale Johannesen af3fe99821 Ignore debug info one more place during coalescing. 
llvm-svn: 95819
 2010-02-10 23:04:09 +00:00
Bob Wilson 0f52d0c074 Delete dead PHI machine instructions. These can be created due to type 
legalization even when the IR-level optimizer has removed dead phis, such
as when the high half of an i64 value is unused on a 32-bit target.
I had to adjust a few test cases that had dead phis.
This is a partial fix for Radar 7627077.

llvm-svn: 95816
 2010-02-10 22:58:57 +00:00
Dale Johannesen 8bba1608bd Skip debug info in a couple of places. 
llvm-svn: 95814
 2010-02-10 21:47:48 +00:00
Bill Wendling 7742b6406b Use an index instead of pointers into the vector. If the vector resizes, then 
the pointer values could be invalid.

llvm-svn: 95813
 2010-02-10 21:41:57 +00:00
Dale Johannesen 1ccda7b7c4 When I rewrote this loop per Chris' preference I 
changed its behavior.  Oops.

llvm-svn: 95811
 2010-02-10 21:41:41 +00:00
Eli Friedman 4d4c6944e9 A few missed optimizations; the last one could have a significant impact on 
code with lots of bitfields.

llvm-svn: 95809
 2010-02-10 21:26:04 +00:00
Devang Patel 211746a69a Strip new llvm.dbg.value intrinsic. 
llvm-svn: 95807
 2010-02-10 21:19:56 +00:00
Daniel Dunbar 3e0c9790f2 MC/X86 AsmMatcher: Fix a use after free spotted by d0k, and de-XFAIL 
x86_32-encoding.s in on expectation of it passing.

llvm-svn: 95806
 2010-02-10 21:19:28 +00:00
Dan Gohman bd11c41b91 Minor whitespace cleanups. 
llvm-svn: 95801
 2010-02-10 20:42:57 +00:00
Dan Gohman c42c5243a1 Use an AssemblyAnnotatorWriter to clean up IVUsers' debug output. 
The "uses=" comments are just clutter in this context.

llvm-svn: 95799
 2010-02-10 20:42:37 +00:00
Dan Gohman e34890f921 Add a hook to AssemblyAnnotationWriter to allow custom info comments 
to be printed, in place of the familiar "uses=" comments.

llvm-svn: 95798
 2010-02-10 20:41:46 +00:00
Dan Gohman 97c5902e78 Fix several comments which had previously been "the the" where a 
different word was intended.

llvm-svn: 95795
 2010-02-10 20:04:19 +00:00
Johnny Chen c7e14704d0 Added NOP, DBG, SVC to the instruction table for disassembly purpose. 
llvm-svn: 95784
 2010-02-10 18:02:25 +00:00
Dan Gohman 4a618827de Fix "the the" and similar typos. 
llvm-svn: 95781
 2010-02-10 16:03:48 +00:00
Chris Lattner de03bd0ab4 emit some simple (and probably incorrect) fixups for symbolic 
displacement values.

llvm-svn: 95773
 2010-02-10 06:52:12 +00:00