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36232 Commits

Author SHA1 Message Date
Chris Lattner 94de7bc3aa get def use info more correct. 
llvm-svn: 45821
 2008-01-10 05:12:37 +00:00
Chris Lattner 9e69654461 Infer mayload 
llvm-svn: 45819
 2008-01-10 04:44:48 +00:00
Chris Lattner c72335878d add SDNPMayLoad to the 'load' sdnode definition. This is enough to get all the x86 
instructions (with patterns) that load memory marked, for example.

llvm-svn: 45818
 2008-01-10 04:44:32 +00:00
Chris Lattner 1ca2068227 realize that instructions who match intrinsics that read memory read memory. 
Also, instructions with any nodes that are SDNPMayLoad also read memory.

llvm-svn: 45817
 2008-01-10 04:38:57 +00:00
Chris Lattner f171482a66 verify that the frame index is immutable before remat'ing (still disabled) 
or being side-effect free.

llvm-svn: 45816
 2008-01-10 04:16:31 +00:00
Owen Anderson d445b8813f Don't use LiveVariables::VarInfo::DefInst. 
llvm-svn: 45815
 2008-01-10 03:12:54 +00:00
Evan Cheng 0f8c7c4a73 Codegen improvement has reduced one spill. 
llvm-svn: 45814
 2008-01-10 02:54:40 +00:00
Evan Cheng a26552493b Mark byval parameter stack objects mutable for now. 
llvm-svn: 45813
 2008-01-10 02:24:25 +00:00
Evan Cheng 301b0cade5 Add a isImmutable bit to StackObject. Fixed stack objects are immutable (in the function) unless specified otherwise. 
llvm-svn: 45812
 2008-01-10 02:18:37 +00:00
Dale Johannesen 7ecb3b79c7 Emit unused EH frames for weak definitions on Darwin, 
because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811
 2008-01-10 02:03:30 +00:00
Owen Anderson 4f45cef2f9 Get rid of all uses of LiveVariables::VarInfo::DefInst in favor of the equivalent API from 
MachineRegisterInfo.  Once all clients are switched over, the former will be going away.

llvm-svn: 45805
 2008-01-10 01:36:43 +00:00
Chris Lattner cb0e1bcf0c provide def_* and use_* iterators in addition to reg_* iterators. 
The first only returns definitions of a register, the second only
returns uses, the third returns both.

llvm-svn: 45803
 2008-01-10 01:01:27 +00:00
Owen Anderson 51b8e20ccf Add more comments explaining the basics of how the decision of when to rename and when to insert 
copies is made.

llvm-svn: 45799
 2008-01-10 00:47:01 +00:00
Evan Cheng fead113fe0 Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like. 
llvm-svn: 45798
 2008-01-10 00:37:26 +00:00
Owen Anderson 8958a78576 Get rid of the isKillInst predicate. LiveVariables already provides this information. 
llvm-svn: 45797
 2008-01-10 00:33:11 +00:00
Chris Lattner ec79bba97f Fix PR1845 and rdar://5676945. Generic vectors smaller 
than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 

llvm-svn: 45796
 2008-01-10 00:30:57 +00:00
Chris Lattner e34d7d0e24 new testcase for PR1845 
llvm-svn: 45795
 2008-01-10 00:30:38 +00:00
Evan Cheng 73d1017871 Remove comments that do not correspond to anything after recent refactoring. 
llvm-svn: 45792
 2008-01-10 00:09:10 +00:00
Owen Anderson 1c8152ba03 Copies need to be inserted before the first terminator, not at the end of the block. 
llvm-svn: 45791
 2008-01-10 00:01:41 +00:00
Evan Cheng 0e400d4cb7 Special copy SUnit's do not have SDNode's. 
llvm-svn: 45787
 2008-01-09 23:01:55 +00:00
Owen Anderson 436db42a3c Clean up StrongPHIElimination a bit, and add some more comments to the internal structures. There's 
still more work to do on this front.

llvm-svn: 45783
 2008-01-09 22:40:54 +00:00
Duncan Sands 48f22f0b80 Fix compile failures with g++-4.3. 
llvm-svn: 45781
 2008-01-09 19:42:09 +00:00
Chris Lattner 204e4a27b6 many cleanups and fixed, contributed by Sam Bishop 
llvm-svn: 45780
 2008-01-09 19:28:50 +00:00
Owen Anderson 4de0c3978d StrongPHIElim: Now with even fewer trivial bugs! 
llvm-svn: 45775
 2008-01-09 10:41:39 +00:00
Owen Anderson 77c3fe441b Fix an infinite recursion bug in InsertCopies. 
llvm-svn: 45774
 2008-01-09 10:32:30 +00:00
Owen Anderson e0fd9bd35a Fix some simple bugs. StrongPHIElimination now does not crash on 164.gzip. 
llvm-svn: 45773
 2008-01-09 06:19:05 +00:00
Evan Cheng a31824a08e Fix sse2.psrl.w and sse2.psrl.q definitions. 
llvm-svn: 45772
 2008-01-09 02:16:44 +00:00
Chris Lattner 7ff4a8bf3f Fix llvm-ld -Xlinker, patch by Daniel Teske! 
llvm-svn: 45770
 2008-01-09 01:01:17 +00:00
Chris Lattner 9129f51f9b add a testcase 
llvm-svn: 45768
 2008-01-09 00:37:18 +00:00
Chris Lattner 45e5032b1d add a note 
llvm-svn: 45766
 2008-01-09 00:17:57 +00:00
Chris Lattner 51b01bf8a5 Make load->store deletion a bit smarter. This allows us to compile this: 
void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret

llvm-svn: 45762
 2008-01-08 23:08:06 +00:00
Owen Anderson 1b0d5c747e Rename registers that do not need copies. 
llvm-svn: 45759
 2008-01-08 21:54:52 +00:00
Duncan Sands 7b1460cca4 Crashes llc when using Chris's new legalization logic. 
llvm-svn: 45758
 2008-01-08 21:51:53 +00:00
Ted Kremenek a0a2881b1e Added "getRoot()" to ImmutableMap. 
Made the ctor for ImmutableMap to construct a map from an AVL tree public.

llvm-svn: 45756
 2008-01-08 21:05:59 +00:00
Ted Kremenek 9b0f70bb85 Fixed 80 col. violation. 
llvm-svn: 45752
 2008-01-08 19:38:55 +00:00
Chris Lattner 07fde9bde1 add a mayLoad property for machine instructions, a correlary to mayStore. 
This is currently not set by anything.

llvm-svn: 45748
 2008-01-08 18:05:21 +00:00
Duncan Sands bb956ca730 Use size_t to store Pos, avoid truncating value 
on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.

llvm-svn: 45746
 2008-01-08 10:06:15 +00:00
Chris Lattner 2940c5c56d Implement PR1795, an instcombine hack for forming GEPs with integer pointer arithmetic. 
llvm-svn: 45745
 2008-01-08 07:23:51 +00:00
Chris Lattner ff71ec4dfb add match support for casts. 
llvm-svn: 45744
 2008-01-08 07:02:44 +00:00
Chris Lattner b17db3afa8 remove darwin/i386 t-t 
llvm-svn: 45743
 2008-01-08 06:52:51 +00:00
Chris Lattner 89f36e6b21 Finally implement correct ordered comparisons for PPC, even though 
the code generated is not wonderful.  This turns a miscompilation into
a code quality bug (noted in the ppc readme).  This fixes PR642, which
is over 2 years old (!).  Nate, please review this.

llvm-svn: 45742
 2008-01-08 06:46:30 +00:00
Chris Lattner 184f79a5e1 Testcase for PR1721 
llvm-svn: 45739
 2008-01-08 05:16:29 +00:00
Owen Anderson 812e1ea7cf Actually insert copies now! 
llvm-svn: 45738
 2008-01-08 05:16:15 +00:00
Chris Lattner 97879424fe Fix PR1797 
llvm-svn: 45736
 2008-01-08 04:26:20 +00:00
Evan Cheng 00300ddff1 Minor fix to enable x86-64 pic jit (still fails for other reasons). 
llvm-svn: 45734
 2008-01-08 02:07:10 +00:00
Evan Cheng 4951da49aa Fix a x86-64 static codegen bug. This fixes a lot of x86-64 jit failures. 
llvm-svn: 45733
 2008-01-08 02:06:11 +00:00
Bill Wendling 3b6fe5fa8d Silence warning about loss of precision. 
llvm-svn: 45731
 2008-01-08 00:52:29 +00:00
Evan Cheng 7250120177 Only mark instructions that load a single value without extension as isSimpleLoad = 1. 
llvm-svn: 45727
 2008-01-07 23:56:57 +00:00
Chris Lattner ba734518c1 add a new bit. 
llvm-svn: 45726
 2008-01-07 23:16:55 +00:00
Evan Cheng 8242168ef4 Unbreak x86-64. 
llvm-svn: 45725
 2008-01-07 23:08:23 +00:00