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Author SHA1 Message Date
Charles Davis
1e063d14df Add a new function attribute, 'alignstack'. It will indicate (when the backends 
implement support for it) that the stack should be forcibly realigned in the
prologue (and the process reversed in the epilogue).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95945 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 00:31:15 +00:00
Jakob Stoklund Olesen
4a540f0593 Reapply coalescer fix for better cross-class coalescing. 
This time with fixed test cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 23:55:29 +00:00
Chris Lattner
0d7b0aa760 enhance llvm-mc -show-inst to print the enum of an instruction, like so: 
testb	%al, %al                ## <MCInst #2412 TEST8rr
                                        ##   <MCOperand Reg:2>
                                        ##   <MCOperand Reg:2>>
	jne	LBB1_7                  ## <MCInst #938 JNE_1
                                        ##   <MCOperand Expr:(LBB1_7)>>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95935 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 22:57:32 +00:00
Chris Lattner
7e85180d15 add a new MCInstPrinter::getOpcodeName interface, when it is 
implemented, llvm-mc --show-inst now uses it to print the
instruction opcode as well as the number.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95929 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 22:39:10 +00:00
Anton Korobeynikov
780679baa7 Document binutils requirements for coff targets (cygwin / mingw32). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95928 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:51:51 +00:00
Chris Lattner
b8db331588 improve encoding information for branches. We now know they have 
8 or 32-bit immediates, which allows the new encoder to handle
them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95927 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:45:31 +00:00
Daniel Dunbar
cb7d743b42 MC: Move assembler-backend's fixup list into the fragment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95926 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:29:46 +00:00
Daniel Dunbar
27ade18431 MC: Move MCSectionData::Fixup out to MCAsmFixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:29:29 +00:00
Chris Lattner
8d31de6268 make getFixupKindInfo return a const reference, allowing 
the tables to be const.  Teach MCCodeEmitter to handle
the target-indep kinds so that we don't crash on them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95924 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:27:18 +00:00
Jakob Stoklund Olesen
9637dd50f4 Revert functional change. This broke a bunch of tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95921 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:19:44 +00:00
Chris Lattner
11eafa8bed switch to target-indep fixups for 1/2/4/8 byte data. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95920 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:17:54 +00:00
Devang Patel
cb419d3c6f revert 95903. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95918 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 20:58:56 +00:00
Jakob Stoklund Olesen
a875fd0fdb It is always good to do a cross-class join when the large register has a tiny interval. 
Also avoid division by zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95917 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 20:58:45 +00:00
Johnny Chen
e4c7f0f6ec Added LDRT/LDRBT/STRT/STRBT for disassembly only. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95916 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 20:31:08 +00:00
Chris Lattner
8b442a814e unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95915 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:52:11 +00:00
Dan Gohman
4bcf51be15 llvm-db was removed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95904 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:35:26 +00:00
Devang Patel
11dbf8ee69 Destroy MDNodes while destructing llvm context. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95903 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:35:10 +00:00
Chris Lattner
b917c47c98 refactor x86 conditional branches to use a multipattern 
that generates the 1-byte and 4-byte immediate versions
from one definition.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95902 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:31:22 +00:00
Chris Lattner
bd13fb6254 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95901 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:25:55 +00:00
Jeffrey Yasskin
42fc558624 Make Kaleidoscope not link against the interpreter, since that didn't 
work anyway (Interpreter::getPointerToFunction doesn't return a
callable pointer), and improve the error message when an
ExecutionEngine can't be created.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95896 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:15:20 +00:00
Dan Gohman
bbe99362e5 Add an svn:ignore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 19:07:04 +00:00
Johnny Chen
811663f799 Forgot to also check in this file for vcvt (floating-point <-> fixed-point, VFP). 
Sorry!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95892 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:47:03 +00:00
Dale Johannesen
39c7a198ea Allow for more than one DBG_VALUE targeting the 
same dead instruction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95890 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:23:23 +00:00
Dale Johannesen
3bfef03eb6 Don't allow DBG_VALUE to affect codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:22:31 +00:00
Johnny Chen
27bb8d0a88 Added VCVT (between floating-point and fixed-point, VFP) for disassembly. 
A8.6.297


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95885 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:17:16 +00:00
Johnny Chen
c6f7b27fda Added BKPT/tBKPT (breakpoint) to the instruction table for disassembly purpose. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95884 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:12:29 +00:00
Jakob Stoklund Olesen
b5b90eddcd 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95879 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 18:06:56 +00:00
Eric Christopher
dfdddd8ed6 Make sure that ConstantExpr offsets also aren't off of extern 
symbols.

Thanks to Duncan Sands for the testcase!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95877 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 17:44:04 +00:00
Johnny Chen
ba6e033f4f Add pseudo instruction TRAP for disassembly, which is encoded according to A5-21 
as the "Permanently UNDEFINED" instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95873 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 17:14:31 +00:00
Bill Wendling
e9d10a6c39 Use .empty() instead of .size(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95871 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 10:37:57 +00:00
Chris Lattner
ecfb3c3d66 dont' call getX86RegNum on X86::RIP, it doesn't like that. This 
fixes the remaining x86-64 jit failures afaik.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95867 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 08:45:56 +00:00
Chris Lattner
5526b69901 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95866 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 08:41:21 +00:00
Jeffrey Yasskin
d8735356a3 Fix (harmless) memory leak found by memcheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95862 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 07:16:13 +00:00
Chris Lattner
8b0f7a7d86 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95860 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 07:06:31 +00:00
Chris Lattner
a38c707d82 generalize EmitDisplacementField to work with any size 
and rename it to EmitImmediate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95859 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:54:23 +00:00
Chris Lattner
0e410918b8 eliminate the dead IsPCRel argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95858 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:51:36 +00:00
Chris Lattner
1b67060645 eliminate the dead "PCAdj" logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95857 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:49:52 +00:00
Jeffrey Yasskin
9233b15d01 Fix some of the memcheck errors found in the JIT unittests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95856 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:41:30 +00:00
Chris Lattner
8c5ad3a5da 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:26:33 +00:00
Chris Lattner
2e1cdbf92d convert to filecheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95854 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 06:24:37 +00:00
Chris Lattner
98df4f9cf2 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95852 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 05:11:54 +00:00
Chris Lattner
5cc25ce17d a testcase that doesn't crash GVN but could someday. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95851 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 05:08:05 +00:00
Chris Lattner
1e452650c6 Make jump threading honor x|undef -> true and x&undef -> false, 
instead of considering x|undef -> x, which may not be true.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95850 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 04:40:44 +00:00
Eric Christopher
26d0e892e3 Add ConstantExpr handling to Intrinsic::objectsize lowering. 
Update testcase accordingly now that we can optimize another
section.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95846 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 01:48:54 +00:00
Devang Patel
f87052a55a test case for r95842. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95844 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 01:31:01 +00:00
Bill Wendling
ca51d05138 Fix to get it to compile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95840 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 01:15:27 +00:00
Bill Wendling
4cb4895e41 Don't print out a default newline when emitting the section offset. There are 
almost always comments afterwards that need printing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95839 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 01:13:02 +00:00
Jeffrey Yasskin
40966a7c68 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!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95837 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 01:07:39 +00:00
Jakob Stoklund Olesen
09eeac9f5f 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95832 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 00:34:33 +00:00
Jakob Stoklund Olesen
598b24c6d1 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95831 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 00:34:18 +00:00