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0324937229
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6723 Commits

Author SHA1 Message Date
Rafael Espindola
0324937229 Reduce code duplication on the TLS implementation. 
This introduces a small regression on the generated code
quality in the case we are just computing addresses, not
loading values.

Will work on it and on X86-64 support.

llvm-svn: 68552
 2009-04-07 21:37:46 +00:00
Dan Gohman
e98c3b1ea1 Don't attempt to handle aggregate argument values in FastISel; let 
SelectionDAG do those. This fixes PR3955.

llvm-svn: 68546
 2009-04-07 20:40:11 +00:00
Chris Lattner
2f520929d4 fix rdar://6762290, a crash compiling cxx filt with clang. 
llvm-svn: 68500
 2009-04-07 05:03:34 +00:00
Bob Wilson
39c7bec188 Handle 'a' modifier in ARM inline assembly. 
Patch by Richard Pennington.

llvm-svn: 68464
 2009-04-06 21:46:51 +00:00
Ed Schouten
ff25f858fd Let the strcat optimizer return the pointer to the start of the buffer, 
instead of the place where it started to perform the string copy.

- PR3661
- Patch by Benjamin Kramer!

llvm-svn: 68443
 2009-04-06 13:06:48 +00:00
Nick Lewycky
811a7377b0 Try SSE2? 
llvm-svn: 68423
 2009-04-04 10:24:24 +00:00
Nick Lewycky
eea5412e19 Add support for embedded metadata to LLVM. This introduces two new types of 
Constant, MDString and MDNode which can only be used by globals with a name
that starts with "llvm." or as arguments to a function with the same naming
restriction.

llvm-svn: 68420
 2009-04-04 07:22:01 +00:00
Nick Lewycky
49df985ad9 Fix test on non-x86 platforms. 
llvm-svn: 68419
 2009-04-04 07:20:43 +00:00
Dan Gohman
ea48adc739 Fix a TargetLowering optimization so that it doesn't duplicate 
loads when an input node has multiple uses.

llvm-svn: 68398
 2009-04-03 20:11:30 +00:00
Mon P Wang
f829fb5cab Added a x86 dag combine to increase the chances to use a 
movq for v2i64 on x86-32.

llvm-svn: 68368
 2009-04-03 02:43:30 +00:00
Owen Anderson
851ce6d1d5 Reapply r68211, with the miscompilations it caused fixed. 
llvm-svn: 68262
 2009-04-01 23:53:49 +00:00
Bob Wilson
5b42ebe6a9 Fix PR3862: Recognize some ARM-specific constraints for immediates in inline 
assembly.

llvm-svn: 68218
 2009-04-01 17:58:54 +00:00
Dan Gohman
a134448980 Revert r68172. It caused regressions in 
Applications/Burg/burg
  Applications/ClamAV/clamscan
and many other tests.

llvm-svn: 68211
 2009-04-01 16:37:47 +00:00
Owen Anderson
d7c837bb4b Enhance GVN to propagate simple conditionals. This fixes PR3921. 
llvm-svn: 68172
 2009-04-01 01:20:45 +00:00
Evan Cheng
c419350132 Throttle back "fold select into operand" transformation. InstCombine should not generate selects of two constants unless they are selects of 0 and 1. 
e.g.
define i32 @t1(i32 %c, i32 %x) nounwind {
       %t1 = icmp eq i32 %c, 0
       %t2 = lshr i32 %x, 18
       %t3 = select i1 %t1, i32 %t2, i32 %x
       ret i32 %t3
}

was turned into

define i32 @t2(i32 %c, i32 %x) nounwind {
       %t1 = icmp eq i32 %c, 0
       %t2 = select i1 %t1, i32 18, i32 0
       %t3 = lshr i32 %x, %t2
       ret i32 %t3
}

For most targets, that means materializing two constants and then a select. e.g. On x86-64

movl    %esi, %eax
shrl    $18, %eax
testl   %edi, %edi
cmovne  %esi, %eax
ret

=>

xorl    %eax, %eax
testl   %edi, %edi
movl    $18, %ecx
cmovne  %eax, %ecx
movl    %esi, %eax
shrl    %cl, %eax
ret

Also, the optimizer and codegen can reason about shl / and / add, etc. by a constant. This optimization will hinder optimizations using ComputeMaskedBits.

llvm-svn: 68142
 2009-03-31 20:42:45 +00:00
Evan Cheng
0674a512bf Fully general expansion of integer shift of any size. 
llvm-svn: 68134
 2009-03-31 19:39:24 +00:00
Dan Gohman
9f7d1f2bd4 Add an explicit -asm-verbose to these tests, to make it 
possible to run the tests with -asm-verbose defaulting
to false.

llvm-svn: 68124
 2009-03-31 18:20:47 +00:00
Devang Patel
7fa69ef109 Update call graph after inlining invoke. 
Patch by Jay Foad.

llvm-svn: 68120
 2009-03-31 17:36:12 +00:00
Owen Anderson
59cff6919d Remove the "fast" cases for spill and restore point determination, as these were subtlely wrong in obscure cases. Patch the testcase 
to account for this change.

llvm-svn: 68093
 2009-03-31 08:27:09 +00:00
Dan Gohman
cba99ee717 Fix live-out reg logic to not insert over-aggressive AssertZExt 
instructions. This fixes lua.

llvm-svn: 68083
 2009-03-31 01:38:29 +00:00
Devang Patel
ec65625744 Loop Index Split can eliminate a loop if it can determin if loop body is executed only once. There was a bug in determining IV based value of the iteration for which the loop body is executed. Fix it. 
llvm-svn: 68071
 2009-03-30 22:24:10 +00:00
Evan Cheng
d7824e208a Turn a 2-address instruction into a 3-address one when it's profitable even if the two-address operand is killed. 
e.g.
%reg1024<def> = MOV r1
%reg1025<def> = ADD %reg1024, %reg1026
r0            = MOV %reg1025

If it's not possible / profitable to commute ADD, then turning ADD into a LEA saves a copy.

llvm-svn: 68065
 2009-03-30 21:34:07 +00:00
Anton Korobeynikov
497fd0e996 Tweak test for recent relro stuff 
llvm-svn: 68035
 2009-03-30 15:28:40 +00:00
Evan Cheng
5c460dbc3d Forgot this test. 
llvm-svn: 68025
 2009-03-30 06:17:34 +00:00
Anton Korobeynikov
d24f576124 Testcase for recent ro/relocs stuff 
llvm-svn: 68008
 2009-03-29 17:14:57 +00:00
Duncan Sands
602234cdf3 Fix PR3899: add support for extracting floats from vectors 
when using -soft-float.
Based on a patch by Jakob Stoklund Olesen.

llvm-svn: 67996
 2009-03-29 13:51:06 +00:00
Arnold Schwaighofer
76188bc8a1 Make check in CheckTailCallReturnConstraints for ignorable instructions between 
a CALL and a RET node more generic. Add a test for tail calls with a void
return.

llvm-svn: 67943
 2009-03-28 12:36:29 +00:00
Arnold Schwaighofer
636127325b Enable tail call optimization for functions that return a struct (bug 3664) and for functions that return types that need extending (e.g i1). 
llvm-svn: 67934
 2009-03-28 08:33:27 +00:00
Evan Cheng
a15fdaa292 Optimize some 64-bit multiplication by constants into two lea's or one lea + shl since imulq is slow (latency 5). e.g. 
x * 40
=>
shlq    $3, %rdi
leaq    (%rdi,%rdi,4), %rax

This has the added benefit of allowing more multiply to be folded into addressing mode. e.g.
a * 24 + b
=>
leaq    (%rdi,%rdi,2), %rax
leaq    (%rsi,%rax,8), %rax

llvm-svn: 67917
 2009-03-28 05:57:29 +00:00
Dan Gohman
66fc2f0a88 Fix this test so that it doesn't spuriously fail due to some 
unrelated debugging output happening to contain the string "store".

llvm-svn: 67849
 2009-03-27 16:17:22 +00:00
Evan Cheng
00b79de6a7 Add a __builtin___memset_chk test. 
llvm-svn: 67815
 2009-03-27 02:45:14 +00:00
Evan Cheng
86f6af35bf Add -march=x86. 
llvm-svn: 67783
 2009-03-26 23:03:32 +00:00
Bill Wendling
e59b8d1cad Add -f to RUN line. 
llvm-svn: 67744
 2009-03-26 06:17:54 +00:00
Chris Lattner
ad28e0de5f no need for eh info 
llvm-svn: 67740
 2009-03-26 05:51:18 +00:00
Bill Wendling
3b9278a1c5 Add testcase for r67728. 
llvm-svn: 67729
 2009-03-26 01:52:47 +00:00
Devang Patel
8c31ea5290 Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block. 
llvm-svn: 67719
 2009-03-25 23:57:48 +00:00
Evan Cheng
bddc7d1032 Add a test case for PR3779: when to promote the function return value. 
llvm-svn: 67702
 2009-03-25 20:30:19 +00:00
Evan Cheng
7e4217176a Revert 67132. This is breaking some objective-c apps. 
Also fixes SDISel so it *does not* force promote return value if the function is not marked signext / zeroext.

llvm-svn: 67701
 2009-03-25 20:20:11 +00:00
Evan Cheng
b5896c3c48 One more test. 
llvm-svn: 67694
 2009-03-25 17:45:18 +00:00
Evan Cheng
c288c3bf1a Add __builtin___memcpy_chk tests. 
llvm-svn: 67691
 2009-03-25 16:49:31 +00:00
Duncan Sands
837d2365c1 These tests pass on linux. 
llvm-svn: 67689
 2009-03-25 16:43:59 +00:00
Evan Cheng
a51eea988c Add a __builtin_object_size test. 
llvm-svn: 67688
 2009-03-25 16:29:33 +00:00
Chris Lattner
e7eed82209 Fix a bug in our autoupgrade support: in an argument list to a function 
call, we should treat "i64 zext" as the start of a constant expr, but
"i64 0 zext" as an argument with an obsolete attribute on it (this form
is already tested by test/Assembler/2007-07-30-AutoUpgradeZextSext.ll).

Make the autoupgrade logic more discerning to avoid treating "i64 zext"
as an old-style attribute, causing us to reject a valid constant expr.
This fixes PR3876.

llvm-svn: 67682
 2009-03-25 06:36:36 +00:00
Evan Cheng
3a7489a4cc CodeGen still defaults to non-verbose asm, but llc now overrides it and default to verbose. 
llvm-svn: 67668
 2009-03-25 01:47:28 +00:00
Chris Lattner
c055403764 Fix PR3874 by restoring a condition I removed, but making it more 
precise than it used to be.

llvm-svn: 67662
 2009-03-25 00:28:58 +00:00
Misha Brukman
6e86395ae7 Converted a1.ll to unittests. 
llvm-svn: 67652
 2009-03-24 21:36:09 +00:00
Chris Lattner
aabd3eeeff canonicalize inttoptr and ptrtoint instructions which cast pointers 
to/from integer types that are not intptr_t to convert to intptr_t
then do an integer conversion to the dest type.  This exposes the
cast to the optimizer.

llvm-svn: 67638
 2009-03-24 18:35:40 +00:00
Chris Lattner
51a4134e1c two changes: 
1. Make instcombine always canonicalize trunc x to i1 into an icmp(x&1).  This 
   exposes the AND to other instcombine xforms and is more of what the code
   generator expects.
2. Rewrite the remaining trunc pattern match to use 'match', which 
   simplifies it a lot.
   

llvm-svn: 67635
 2009-03-24 18:15:30 +00:00
Dan Gohman
edd5fa3721 Add a testcase for the scheduling heuristic introduced in r67586. 
llvm-svn: 67622
 2009-03-24 16:38:27 +00:00
Evan Cheng
b3196f1298 Do not emit comments unless -asm-verbose. 
llvm-svn: 67580
 2009-03-24 00:17:40 +00:00