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2556 Commits

Author SHA1 Message Date
Devang Patel
a778f5c798 Do not lose debug info of an inlined function argument even if the argument is only used through GEPs. 
This time with a fix that avoids using invalidated DenseMap iterator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125984 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:43:42 +00:00
Bill Wendling
5028249fab Reapply r114997 now that the buildbots have been updated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125960 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 21:12:58 +00:00
Cameron Zwarich
1646953538 Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125830 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 04:58:10 +00:00
Devang Patel
a4defc00eb Do not lose debug info of an inlined function argument even if the argument is only used through GEPs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125794 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-17 23:33:27 +00:00
NAKAMURA Takumi
6904f05e60 Triple::MinGW64 is deprecated and removed. We can use Triple::MinGW32 generally. 
No one uses *-mingw64. mingw-w64 is represented as {i686|x86_64}-w64-mingw32. In llvm side, i686 and x64 can be treated as similar way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125747 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-17 12:24:17 +00:00
Eric Christopher
169e1552e7 The change for PR9190 wasn't quite right. We need to avoid making the 
transformation if we can't legally create a build vector of the correct
type. Check that we can make the transformation first, and add a TODO to
refactor this code with similar cases.

Fixes: PR9223 and rdar://9000350


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125631 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-16 01:10:03 +00:00
Eric Christopher
f621e3b6d6 Add testcase for PR9190. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125630 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-16 01:08:31 +00:00
Devang Patel
d3526eab46 Ignore DBG_VALUE machine instructions while constructing instruction ranges based on location info. 
Machine instruction range consisting of only DBG_VALUE MIs only contributes consecutive labels in assembly output, which is harmless, and empty scope entry in DebugInfo, which confuses debugger tools.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125577 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-15 17:56:09 +00:00
Rafael Espindola
5d618ef7f1 Switch llvm to using comdats. For now always use groups with a single 
section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125526 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-14 22:23:49 +00:00
Chris Lattner
593051b4e2 fix PR9210 by implementing some type legalization logic for 
vector fp conversions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125482 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-14 06:30:45 +00:00
Chris Lattner
0a9481f44f Enhance ComputeMaskedBits to know that aligned frameindexes 
have their low bits set to zero.  This allows us to optimize
out explicit stack alignment code like in stack-align.ll:test4 when
it is redundant.

Doing this causes the code generator to start turning FI+cst into
FI|cst all over the place, which is general goodness (that is the
canonical form) except that various pieces of the code generator
don't handle OR aggressively.  Fix this by introducing a new
SelectionDAG::isBaseWithConstantOffset predicate, and using it
in places that are looking for ADD(X,CST).  The ARM backend in
particular was missing a lot of addressing mode folding opportunities
around OR.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125470 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-13 22:25:43 +00:00
Chris Lattner
915eeb4887 when legalizing extremely wide shifts, make sure that 
the shift amounts are in a suitably wide type so that
we don't generate out of range constant shift amounts.

This fixes PR9028.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125458 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-13 09:10:56 +00:00
Evan Cheng
4d96c638af After 3-addressifying a two-address instruction, update the register maps; add a missing check when considering whether it's profitable to commute. rdar://8977508. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125259 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-10 02:20:55 +00:00
Devang Patel
8c8d95d0c2 Reduce test case, smaller is better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125019 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-07 18:24:18 +00:00
NAKAMURA Takumi
3f4be4fb86 Target/X86: Tweak allocating shadow area (aka home) on Win64. It must be enough for caller to allocate one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124949 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-05 15:11:32 +00:00
Devang Patel
6c3ea9012e Merge .debug_loc entries whenever possible to reduce debug_loc size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124904 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-04 22:57:18 +00:00
Nick Lewycky
c57ef56142 Mark that the return is using EAX so that we don't use it for some other 
purpose. Fixes PR9080!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124903 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-04 22:44:08 +00:00
Devang Patel
f827cd717b DebugLoc associated with a machine instruction is used to emit location entries. DebugLoc associated with a DBG_VALUE is used to identify lexical scope of the variable. After register allocation, while inserting DBG_VALUE remember original debug location for the first instruction and reuse it, otherwise dwarf writer may be mislead in identifying the variable's scope. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124845 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-04 01:43:25 +00:00
Rafael Espindola
855ff183b9 Add -march to fix the bots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124774 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-03 04:21:01 +00:00
Rafael Espindola
f297c93191 Fix PR9127 by reversing the operands even if they have more then one use. 
Reversing the operands allows us to fold, but doesn't force us to. Also, at
this point the DAG is still being optimized, so the check for hasOneUse is not
very precise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124773 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-03 03:58:05 +00:00
Devang Patel
e9a7ea6865 Keep track of incoming argument's location while emitting LiveIns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124611 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-31 21:38:14 +00:00
Benjamin Kramer
9b108a338d Teach DAGCombine to fold fold (sra (trunc (sr x, c1)), c2) -> (trunc (sra x, c1+c2) when c1 equals the amount of bits that are truncated off. 
This happens all the time when a smul is promoted to a larger type.

On x86-64 we now compile "int test(int x) { return x/10; }" into
  movslq  %edi, %rax
  imulq $1717986919, %rax, %rax
  movq  %rax, %rcx
  shrq  $63, %rcx
  sarq  $34, %rax <- used to be "shrq $32, %rax; sarl $2, %eax"
  addl  %ecx, %eax

This fires 96 times in gcc.c on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124559 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-30 16:38:43 +00:00
Evan Cheng
c3f507f98a Re-apply r124518 with fix. Watch out for invalidated iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124526 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 04:46:23 +00:00
Evan Cheng
b0a42fdb36 Revert r124518. It broke Linux self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124522 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 02:43:04 +00:00
Evan Cheng
5e6940788f Re-commit r124462 with fixes. Tail recursion elim will now dup ret into unconditional predecessor to enable TCE on demand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 01:29:26 +00:00
Evan Cheng
1b5c0cb71d Revert r124462. There are a few big regressions that I need to fix first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124478 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 07:12:38 +00:00
Rafael Espindola
ddf0e59cc6 Add a triple. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124471 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:57:55 +00:00
Rafael Espindola
1ffb533699 Print the visibility of declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124468 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:20:10 +00:00
Evan Cheng
40f64cb0de - Stop simplifycfg from duplicating "ret" instructions into unconditional 
branches. PR8575, rdar://5134905, rdar://8911460.
- Allow codegen tail duplication to dup small return blocks after register
  allocation is done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124462 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 02:19:21 +00:00
NAKAMURA Takumi
7754f85885 Target/X86: Tweak win64's tailcall. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124272 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 02:04:09 +00:00
NAKAMURA Takumi
e5fffe9c3f Fix whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124270 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 02:03:37 +00:00
Devang Patel
8f31428119 Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124203 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 18:09:58 +00:00
Devang Patel
a3ee3ef71b Speculatively revert r124138. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124142 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 20:04:37 +00:00
Devang Patel
224a180d11 Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124138 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 19:24:37 +00:00
Chris Lattner
ccea167db5 fix a missing shuffle pattern, PR9009. Patch by Artiom Myaskouvskey! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124102 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:42:46 +00:00
Eric Christopher
02050986d9 Expand invalid return values for umulo and smulo. Handle these similarly 
to add/sub by doing the normal operation and then checking for overflow
afterwards. This generally relies on the DAG handling the later invalid
operations as well.

Fixes the 64-bit part of rdar://8622122 and rdar://8774702.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123908 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-20 08:54:28 +00:00
Benjamin Kramer
c9b6a3eb90 Fix an off-by-one error in ctpop combining. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123664 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-17 18:00:28 +00:00
Benjamin Kramer
d822892455 Add a DAGCombine to turn (ctpop x) u< 2 into (x & x-1) == 0. 
This shaves off 4 popcounts from the hacked 186.crafty source.

This is enabled even when a native popcount instruction is available. The
combined code is one operation longer but it should be faster nevertheless.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123621 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-17 12:04:57 +00:00
Rafael Espindola
1c10db3da9 Update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123591 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 18:02:57 +00:00
Chris Lattner
dec28ceb02 fix PR8514, a bug where the "heroic" transformation of shift/and 
into and/shift would cause nodes to move around and a dangling pointer
to happen.  The code tried to avoid this with a HandleSDNode, but 
got the details wrong.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123578 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 08:48:11 +00:00
Chris Lattner
9cd3da47f9 fix PR8981, a crash trying to form a conditional inc with a floating point compare. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123560 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 02:56:53 +00:00
Chris Lattner
b99fdee325 reapply my fix for PR8961 with a tweak to properly handle 
multi-instruction sequences like calls.  Many thanks to Jakob for
finding a testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123559 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 02:27:38 +00:00
Chris Lattner
d357e88740 revert my fastisel patch again which apparently still gives the 
llvm-gcc-i386-linux-selfhost buildbot heartburn...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123431 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 06:14:33 +00:00
Chris Lattner
9e27cc8049 reapply r123414 now that the botz are calmed down and the fix is already in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123427 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 04:24:28 +00:00
Chris Lattner
a899d1c264 r123414 broke llvm-gcc bootstrap apparently, revert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123422 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 02:07:32 +00:00
Chris Lattner
d754041493 fix PR8961 - a fast isel miscompilation where we'd insert a new instruction 
after sext's generated for addressing that got folded.  Previously we compiled
test5 into:

_test5:                                 ## @test5
## BB#0:
        movq    -8(%rsp), %rax          ## 8-byte Reload
        movq    (%rdi,%rax), %rdi
        addq    %rdx, %rdi
        movslq  %esi, %rax
        movq    %rax, -8(%rsp)          ## 8-byte Spill
        movq    %rdi, %rax
        ret

which is insane and wrong.  Now we produce:

_test5:                                 ## @test5
## BB#0:
	movslq	%esi, %rax
	movq	(%rdi,%rax), %rax
	addq	%rdx, %rax
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123414 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 00:01:01 +00:00
Eric Christopher
04f5079ca1 Experiment with changing the default 32-bit linux stack alignment to 
16 bytes for PR8969. Update all testcases accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123367 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 06:47:10 +00:00
Jakob Stoklund Olesen
25dc2268a5 Try again enabling LiveDebugVariables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123342 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 23:36:21 +00:00
Jakob Stoklund Olesen
2df5458535 The world is not ready for LiveDebugVariables yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123290 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 23:20:33 +00:00
Jakob Stoklund Olesen
a518ccc26a Enable LiveDebugVariables by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123282 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 22:45:28 +00:00