Commit Graph

9608 Commits

Author SHA1 Message Date
Dan Gohman 7808d490d3 Add a few more lint checks.
llvm-svn: 100825
2010-04-08 23:05:57 +00:00
Evan Cheng b083c47c21 Coalescer should not delete copy instructions whose defs are partially dead. e.g.
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>

llvm-svn: 100804
2010-04-08 20:02:37 +00:00
Dan Gohman 98bc4371c7 Add a -lint pass which checks for common sources of undefined or likely
unintended behavior.

llvm-svn: 100798
2010-04-08 18:47:09 +00:00
Dan Gohman cb45bd9cb3 Pointers to zero-sized objects don't point to overlapping objects.
llvm-svn: 100789
2010-04-08 18:11:50 +00:00
Dan Gohman 386e01e879 Print empty structs as {} rather than { }.
llvm-svn: 100787
2010-04-08 18:03:05 +00:00
Evan Cheng ebe47c872f Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates.
llvm-svn: 100751
2010-04-08 07:37:57 +00:00
Dan Gohman 4506539d84 When expanding expressions which are using post-inc mode for multiple loops,
ensure that the expansion is dominated by the increments of those loops.

llvm-svn: 100748
2010-04-08 05:57:57 +00:00
Chris Lattner 3ae2dd2ba5 add newlines at the end of files.
llvm-svn: 100705
2010-04-07 22:53:17 +00:00
Dan Gohman d006ab90dd Generalize IVUsers to track arbitrary expressions rather than expressions
explicitly split into stride-and-offset pairs. Also, add the
ability to track multiple post-increment loops on the same expression.

This refines the concept of "normalizing" SCEV expressions used for
to post-increment uses, and introduces a dedicated utility routine for
normalizing and denormalizing expressions.

This fixes the expansion of expressions which are post-increment users
of more than one loop at a time. More broadly, this takes LSR another
step closer to being able to reason about more than one loop at a time.

llvm-svn: 100699
2010-04-07 22:27:08 +00:00
Benjamin Kramer f812ff6f2e unXFAIL, arm disassembler was reenabled.
llvm-svn: 100692
2010-04-07 21:19:41 +00:00
Dale Johannesen f118f9788b Split big test into multiple directories to cater to
those who don't build all targets.

llvm-svn: 100688
2010-04-07 20:43:35 +00:00
Dale Johannesen 27c786bcf9 Test that DEBUG_VALUE comments come out on a variety of targets.
llvm-svn: 100682
2010-04-07 20:01:24 +00:00
Chris Lattner 2c88f8a8c4 this has a pr!
llvm-svn: 100637
2010-04-07 18:04:56 +00:00
Chris Lattner f839ee0c13 fix a latent bug my inline asm stuff exposed:
MachineOperand::isIdenticalTo wasn't handling metadata operands.

llvm-svn: 100636
2010-04-07 18:03:19 +00:00
Sanjiv Gupta 4948793041 Remove XFAIL for vg_leak as the leaks are fixed by 100601.
llvm-svn: 100612
2010-04-07 07:06:48 +00:00
Devang Patel 019922d1b0 Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483.
llvm-svn: 100586
2010-04-06 23:53:48 +00:00
Jakob Stoklund Olesen 20ea258a09 Let that which does not matter truly slide.
This test only cares about alignment, so don't test for other cruft.
An upcoming llvm-gcc patch needs this.

llvm-svn: 100584
2010-04-06 23:44:44 +00:00
Stuart Hastings 4bd3dd956f Reverting 100530 & 100531 due to regressions in the GDB test suite.
llvm-svn: 100563
2010-04-06 21:38:29 +00:00
Jakob Stoklund Olesen 41051a0bfe Don't try to collapse DomainValues onto an incompatible SSE domain.
This fixes the Bullet regression on i386/nocona.

llvm-svn: 100553
2010-04-06 19:48:56 +00:00
Stuart Hastings c067196984 Revise debug info machinery to digest nested functions and classes.
A certain GDB testsuite case (local.cc) has a function nested inside a
class nested inside another function.  GCC presents the innermost
function to llvm-convert first.  Heretofore, the debug info mistakenly
placed the inner function at module scope.  This patch walks the GCC
context links and instantiates the outer class and function so the
debug info is properly nested.  Radar 7426545.

llvm-svn: 100530
2010-04-06 17:19:32 +00:00
Evan Cheng b7a20ee5b5 Add nounwind.
llvm-svn: 100482
2010-04-05 22:30:05 +00:00
Dan Gohman 918a90a3ca Don't do code sinking on unreachable blocks. It's unprofitable and hazardous.
llvm-svn: 100455
2010-04-05 19:17:22 +00:00
Evan Cheng 876a5015af Reverting 100265 to try to get buildbots green again. Lots of self-hosting buildbots started complaining since this commit. Also xfail ARM disassembly tests.
llvm-svn: 100378
2010-04-05 01:04:27 +00:00
Chris Lattner 4e4549deea resolve a fixme.
llvm-svn: 100346
2010-04-04 19:28:59 +00:00
Mon P Wang c576ee9040 Reapply address space patch after fixing an issue in MemCopyOptimizer.
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100304
2010-04-04 03:10:48 +00:00
Chris Lattner 40060d33f6 add integer overflow check for the fp induction variable
checker.  Amusingly, we already had tests that we should
have rejects because they would be miscompiled in the
testsuite.

The remaining issue with this is that we don't check that
the branch causes us to exit the loop if it fails, so we
don't actually know if we remain in bounds.

llvm-svn: 100284
2010-04-03 07:18:48 +00:00
Chris Lattner 40ea690f39 fix PR6761, a miscompilation due to the fp->int IV conversion
stuff.  More bugs remain though.

llvm-svn: 100282
2010-04-03 06:30:03 +00:00
Chris Lattner 2508bcf176 convert to filecheck
llvm-svn: 100281
2010-04-03 06:27:56 +00:00
Chris Lattner 8ca668497f rename feature test.
llvm-svn: 100279
2010-04-03 06:24:28 +00:00
Chris Lattner fc9e88ae76 actually just remove this, will move the real feature test here.
llvm-svn: 100278
2010-04-03 06:24:03 +00:00
Chris Lattner 290f42a9c3 rename test since it is a feature test.
llvm-svn: 100277
2010-04-03 06:22:52 +00:00
Chris Lattner c558b49f14 first half of a pass through IndVarSimplify::HandleFloatingPointIV,
this cleans up a bunch of code and also fixes several crashes and
miscompiles.  More to come unfortunately, this optimization
is quite broken.

llvm-svn: 100270
2010-04-03 05:54:59 +00:00
Bob Wilson f1aa4743d9 Revert all my SSAUpdater patches. The PHI placement algorithm is not correct
(what was I thinking?) and there's also a problem with LCSSA.  I'll try again
later with fixes.

--- Reverse-merging r100263 into '.':
U    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100177 into '.':
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100148 into '.':
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100147 into '.':
U    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100131 into '.':
G    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100130 into '.':
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100126 into '.':
G    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100050 into '.':
D    test/Transforms/GVN/2010-03-31-RedundantPHIs.ll
--- Reverse-merging r100047 into '.':
G    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp

llvm-svn: 100264
2010-04-03 03:50:38 +00:00
Johnny Chen 7b999ea7b7 Second try of initial ARM/Thumb disassembler check-in. It consists of a tablgen
backend (ARMDecoderEmitter) which emits the decoder functions for ARM and Thumb,
and the disassembler core which invokes the decoder function and builds up the
MCInst based on the decoded Opcode.

Reviewed by Chris Latter and Bob Wilson.

llvm-svn: 100233
2010-04-02 22:27:38 +00:00
Evan Cheng 61399375a2 Correctly lower memset / memcpy of undef. It should be a nop. PR6767.
llvm-svn: 100208
2010-04-02 19:36:14 +00:00
Mon P Wang 999c1b927b Revert r100191 since it breaks objc in clang
llvm-svn: 100199
2010-04-02 18:43:02 +00:00
Mon P Wang a972ab8564 Reapply address space patch after fixing an issue in MemCopyOptimizer.
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100191
2010-04-02 18:04:15 +00:00
Dan Gohman f7239102fe Manually notify ScalarEvolution before making an operand replacement, since
it can't currently observe such changes automatically.

llvm-svn: 100186
2010-04-02 14:48:31 +00:00
Dan Gohman 4bd755419f Revert the recent alignment changes. They're broken for -Os because,
in particular, they end up aligning strings at 16-byte boundaries, and
there's no way for GlobalOpt to check OptForSize.

llvm-svn: 100172
2010-04-02 03:04:37 +00:00
Evan Cheng 604bc162da After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted.
rdar://7819990

llvm-svn: 100170
2010-04-02 02:21:24 +00:00
Dan Gohman 8ceeeb444e Remove this initializer so that the optimizer doesn't convert
unaligned loads into aligned loads.

llvm-svn: 100166
2010-04-02 01:26:13 +00:00
Dan Gohman ffb9c71174 Update this test for the new preferred alignment heuristics.
llvm-svn: 100165
2010-04-02 01:24:08 +00:00
Dan Gohman c671347fcb Make globalopt refine global variable alignment.
llvm-svn: 100160
2010-04-02 00:14:16 +00:00
Evan Cheng f997c31598 In 64-bit mode, use i64 to lower memcpy / memset instead of f64.
llvm-svn: 100137
2010-04-01 20:27:45 +00:00
Evan Cheng 4c014c892a - Avoid using floating point stores to implement memset unless the value is zero.
- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.

llvm-svn: 100118
2010-04-01 18:19:11 +00:00
Evan Cheng 1e8ee79957 Add -mcpu to memcpy / memset tests to ensure they behave the same on all hosts / targets.
llvm-svn: 100101
2010-04-01 08:25:26 +00:00
Evan Cheng 43cd9e3845 Fix sdisel memcpy, memset, memmove lowering:
1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704

llvm-svn: 100090
2010-04-01 06:04:33 +00:00
Chris Lattner 6159249891 change this from using '!dbg' to using '!dbgx'. The
MD used here isn't valid for !dbg.

llvm-svn: 100085
2010-04-01 05:13:10 +00:00
Bob Wilson b9fb48bff7 Add a redundant PHI testcase for SSAUpdater to go with svn r100047.
llvm-svn: 100050
2010-03-31 21:38:43 +00:00
Gabor Greif 6882a5eea1 testcase for r99914, provided by baldrick!
llvm-svn: 100043
2010-03-31 20:37:13 +00:00