Mikhail Glushenkov [Mon, 22 Sep 2008 20:50:40 +0000 (20:50 +0000)]
Move llvmc2 header files under include/llvm/CompilerDriver
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56466
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:49:34 +0000 (20:49 +0000)]
Plugin support for llvmc2 (a-la opt).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56465
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:48:48 +0000 (20:48 +0000)]
Add a 'Debugging' section to the documentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56464
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:48:22 +0000 (20:48 +0000)]
Make comments a little bit more clear.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56463
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:47:46 +0000 (20:47 +0000)]
Get rid of GlobalLanguageMap. Global state is evil.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56462
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:47:09 +0000 (20:47 +0000)]
Rename our version of ccc to ccc2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56461
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:46:44 +0000 (20:46 +0000)]
Fix some comments
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56460
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:46:19 +0000 (20:46 +0000)]
Add a (forward_as) option property
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56459
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Mikhail Glushenkov [Mon, 22 Sep 2008 20:45:17 +0000 (20:45 +0000)]
Delete the file llvmc2/doc/LLVMC-Enhancements.rst + some minor language/spelling fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56458
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Dale Johannesen [Mon, 22 Sep 2008 19:51:58 +0000 (19:51 +0000)]
Refactor FP intrinisic setup. Per review feedback.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56456
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Oscar Fuentes [Mon, 22 Sep 2008 18:21:51 +0000 (18:21 +0000)]
CMake build system: support for parallel builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56453
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Evan Cheng [Mon, 22 Sep 2008 18:19:24 +0000 (18:19 +0000)]
Per review feedback: Only perform
(srl x, (trunc (and y, c))) -> (srl x, (and (trunc y), c))
etc. when both "trunc" and "and" have single uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56452
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Arnold Schwaighofer [Mon, 22 Sep 2008 14:50:07 +0000 (14:50 +0000)]
Change the calling convention used when tail call optimization is enabled from CC_X86_32_TailCall to CC_X86_32_FastCC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56436
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Rafael Espindola [Mon, 22 Sep 2008 10:06:26 +0000 (10:06 +0000)]
Add bound checks in SmallVector
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56432
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Oscar Fuentes [Mon, 22 Sep 2008 02:33:43 +0000 (02:33 +0000)]
add_partially_linked_object: Replaced nonexistent MESSAGE option in
add_custom_command with COMMENT. It was forcing unconditional command
execution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56425
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Oscar Fuentes [Mon, 22 Sep 2008 01:08:49 +0000 (01:08 +0000)]
Initial support for the CMake build system.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56419
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Bill Wendling [Mon, 22 Sep 2008 00:44:35 +0000 (00:44 +0000)]
Add helper function to get a 32-bit floating point constant. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56418
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Chris Lattner [Sun, 21 Sep 2008 23:30:17 +0000 (23:30 +0000)]
explain what earlyclobber actually is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56415
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Chris Lattner [Sun, 21 Sep 2008 21:44:29 +0000 (21:44 +0000)]
Fold immediates into X86 shifts with fast isel. This generates:
sarl $3, %ecx
instead of:
movl $3, %ecx
sarl %cl, %edx
This shrinks fast isel 176.gcc by about 2000 instructions (.3%)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56413
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Dan Gohman [Sun, 21 Sep 2008 21:11:41 +0000 (21:11 +0000)]
Factor out code into HandleVirtRegDef, for consistency with
Handle{Virt,Phys}Reg{Def,Use}. Remove a redundant check
for register zero, and redundant checks for isPhysicalRegister.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56412
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Dan Gohman [Sun, 21 Sep 2008 21:01:49 +0000 (21:01 +0000)]
Instead of building a list and sorting it just to find a maximum element,
compute the maximum element directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56411
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Owen Anderson [Sun, 21 Sep 2008 20:43:24 +0000 (20:43 +0000)]
Fetch the starting index of the block when assigning intervals. This gets live-in indices
correct in the presence of things like EH labels.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56410
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Chris Lattner [Sun, 21 Sep 2008 18:38:31 +0000 (18:38 +0000)]
don't print GlobalAddressSDNode's with an offset of zero as "foo0".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56399
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Chris Lattner [Sat, 20 Sep 2008 19:17:53 +0000 (19:17 +0000)]
add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56391
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Cedric Venet [Sat, 20 Sep 2008 18:02:18 +0000 (18:02 +0000)]
Update VS projects.
Change some class to struct for coherency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56389
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Dale Johannesen [Sat, 20 Sep 2008 17:45:21 +0000 (17:45 +0000)]
Shorten and rearrange data fields to save a word of memory.
Per review feedback.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56388
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Duncan Sands [Sat, 20 Sep 2008 16:45:58 +0000 (16:45 +0000)]
Implement review feedback from Devang: make use
of mayReadFromMemory and mayWriteToMemory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56387
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Dale Johannesen [Sat, 20 Sep 2008 02:03:04 +0000 (02:03 +0000)]
Teach coalescer about earlyclobber bits.
Check bits for preferred register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56384
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Evan Cheng [Sat, 20 Sep 2008 01:28:05 +0000 (01:28 +0000)]
Fix PR2808. When regalloc runs out of register, it spill a physical register around the live interval being allocated. Do not continue to try to spill another register, just grab the physical register and move on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56381
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Evan Cheng [Sat, 20 Sep 2008 01:26:27 +0000 (01:26 +0000)]
Clean up the test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56380
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Evan Cheng [Sat, 20 Sep 2008 00:13:45 +0000 (00:13 +0000)]
No need to print function stubs for Mac OS X 10.5 and up. Linker will handle it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56378
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Evan Cheng [Sat, 20 Sep 2008 00:13:08 +0000 (00:13 +0000)]
80 column violation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56377
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Dan Gohman [Fri, 19 Sep 2008 23:42:04 +0000 (23:42 +0000)]
Fix a FastISel GlobalVariable CSE bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56376
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Evan Cheng [Fri, 19 Sep 2008 22:49:39 +0000 (22:49 +0000)]
Continue after removing the current MI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56372
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Dan Gohman [Fri, 19 Sep 2008 22:16:54 +0000 (22:16 +0000)]
Refactor X86SelectConstAddr, folding it into X86SelectAddress. This
results in better code for globals. Also, unbreak the local CSE for
GlobalValue stub loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56371
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Dale Johannesen [Fri, 19 Sep 2008 18:52:31 +0000 (18:52 +0000)]
Make earlyclobber stuff work when virtual regs
have previously been assigned conflicting physreg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56364
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Bill Wendling [Fri, 19 Sep 2008 18:34:40 +0000 (18:34 +0000)]
Prevent warning about conversion from 64-bit to 32-bit by (yuck) casting...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56359
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Dan Gohman [Fri, 19 Sep 2008 18:09:19 +0000 (18:09 +0000)]
Now that ConstantSDNode doesn't hold an APInt,
use ARG_FLAGSSDNode as the most aligned node type,
as it contains an int64_t, which is 8-byte
aligned on mingw.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56358
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Ted Kremenek [Fri, 19 Sep 2008 18:01:14 +0000 (18:01 +0000)]
Added static methods to APSInt: getMinValue and getMaxValue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56355
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Evan Cheng [Fri, 19 Sep 2008 17:38:47 +0000 (17:38 +0000)]
Re-materalized definition instructions may be dead. Whack them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56352
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Gabor Greif [Fri, 19 Sep 2008 15:13:20 +0000 (15:13 +0000)]
backing out my last commit, it was not intended to go on the trunk
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56349
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Gabor Greif [Fri, 19 Sep 2008 15:03:57 +0000 (15:03 +0000)]
first shot at removing Use::Val
untested, Use::swap() is definitely not done yet
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56348
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Duncan Sands [Fri, 19 Sep 2008 14:34:36 +0000 (14:34 +0000)]
Turn on the AddReadAttrs pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56345
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Duncan Sands [Fri, 19 Sep 2008 09:20:05 +0000 (09:20 +0000)]
Add test for improvement of readonly to readnone,
and non-demotion of readnone to readonly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56344
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Duncan Sands [Fri, 19 Sep 2008 09:16:32 +0000 (09:16 +0000)]
Turn on these tests!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56343
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Duncan Sands [Fri, 19 Sep 2008 08:23:44 +0000 (08:23 +0000)]
Remove the MarkModRef pass (use AddReadAttrs instead).
Unfortunately this means removing one regression test
of GlobalsModRef because I couldn't work out how to
perform it without MarkModRef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56342
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Duncan Sands [Fri, 19 Sep 2008 08:17:05 +0000 (08:17 +0000)]
Add a new pass AddReadAttrs which works out which functions
can get the readnone/readonly attributes, and gives them it.
The plan is to remove markmodref (which did the same thing
by querying GlobalsModRef) and delete the analogous
functionality from GlobalsModRef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56341
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Duncan Sands [Fri, 19 Sep 2008 08:01:57 +0000 (08:01 +0000)]
Test the callgraph directly for the missing edge.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56338
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Duncan Sands [Fri, 19 Sep 2008 07:57:09 +0000 (07:57 +0000)]
Teach -callgraph to always print the callgraph (as the
description says it does), not just when -analyze is
used as well. This means printing to stderr, so adjust
some tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56337
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Dale Johannesen [Fri, 19 Sep 2008 01:02:35 +0000 (01:02 +0000)]
Remove AsmThatEarlyClobber etc. from LiveIntervalAnalysis
and redo as linked list walk. Logic moved into RA.
Per review feedback.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56326
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Devang Patel [Thu, 18 Sep 2008 23:45:14 +0000 (23:45 +0000)]
splitLoop does not handle split condition EQ.
Fixes PR 2805
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56321
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Dan Gohman [Thu, 18 Sep 2008 23:23:44 +0000 (23:23 +0000)]
Address-mode folding for X86FastISel. It's pretty basic, but it
catches a fair number of common cases. Note that this currently
causes Fast-ISel to leave behind lots of dead instructions.
Those will be dealt with in subsequent commits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56320
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Bill Wendling [Thu, 18 Sep 2008 23:04:18 +0000 (23:04 +0000)]
Decrementing the iterator here could be wrong if the worklist is empty after the "erase".
Thanks to Ji Young Park for the patch!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56316
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Devang Patel [Thu, 18 Sep 2008 22:50:42 +0000 (22:50 +0000)]
Try to place hoisted instructions befoe icmp instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56315
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Evan Cheng [Thu, 18 Sep 2008 22:38:47 +0000 (22:38 +0000)]
Somehow RegAllocLinearScan is keeping two pointers to MachineRegisterInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56314
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Dan Gohman [Thu, 18 Sep 2008 18:26:43 +0000 (18:26 +0000)]
Simplify this code. The FastISel class has its own TD member.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56311
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Dan Gohman [Thu, 18 Sep 2008 18:22:32 +0000 (18:22 +0000)]
Don't consider instructions with implicit physical register
defs to be necessarily live.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56310
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Tanya Lattner [Thu, 18 Sep 2008 16:32:28 +0000 (16:32 +0000)]
Upgrade doxygen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56308
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Dan Gohman [Thu, 18 Sep 2008 16:26:26 +0000 (16:26 +0000)]
Add a new "fast" scheduler. This is currently basically just a
copy of the BURRList scheduler, but with several parts ripped
out, such as backtracking, online topological sort maintenance
(needed by backtracking), the priority queue, and Sethi-Ullman
number computation and maintenance (needed by the priority
queue). As a result of all this, it generates somewhat lower
quality code, but that's its tradeoff for running about 30%
faster than list-burr in -fast mode in many cases.
This is somewhat experimental. Moving forward, major pieces of
this can be refactored with pieces in common with
ScheduleDAGRRList.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56307
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Evan Cheng [Thu, 18 Sep 2008 07:54:21 +0000 (07:54 +0000)]
Preliminary support for systems which require changing JIT memory regions privilege from read / write to read / executable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56303
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Evan Cheng [Thu, 18 Sep 2008 07:28:19 +0000 (07:28 +0000)]
Duh. Default to ARMCC::AL (always).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56301
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Evan Cheng [Thu, 18 Sep 2008 07:27:23 +0000 (07:27 +0000)]
Clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56300
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Evan Cheng [Thu, 18 Sep 2008 07:24:33 +0000 (07:24 +0000)]
Cosmetic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56299
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Dan Gohman [Wed, 17 Sep 2008 21:18:49 +0000 (21:18 +0000)]
FastISel: For calls, prefer using the callee's address as a constant
over having it in a register. And wait until after checking type
legality before requesting that the callee address be placed in a
register. Also, fix support for calls with void return type.
This speeds up fast-isel isel time by about 15% and reduces
instruction counts by about 3% overall on certain testcases. It also
changes many indirect calls to direct calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56292
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Dale Johannesen [Wed, 17 Sep 2008 21:13:11 +0000 (21:13 +0000)]
Add a bit to mark operands of asm's that conflict
with an earlyclobber operand elsewhere. Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a way
that conflicts with an earlyclobber. See also comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56290
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Evan Cheng [Wed, 17 Sep 2008 18:36:25 +0000 (18:36 +0000)]
Unallocatable registers do not have live intervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56287
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Devang Patel [Wed, 17 Sep 2008 18:21:49 +0000 (18:21 +0000)]
Do not hoist instruction above branch condition. The instruction may use branch condition.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56286
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Devang Patel [Wed, 17 Sep 2008 17:53:47 +0000 (17:53 +0000)]
Do not ignore iv uses outside the loop.
This one slipped through cracks very well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56284
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Devang Patel [Wed, 17 Sep 2008 16:01:39 +0000 (16:01 +0000)]
Fix comments, help messages.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56282
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Dan Gohman [Wed, 17 Sep 2008 15:25:49 +0000 (15:25 +0000)]
Don't worry about clobbering physical register defs that aren't used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56281
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Evan Cheng [Wed, 17 Sep 2008 07:53:38 +0000 (07:53 +0000)]
Fix addrmode1 instruction encodings; fix bx_ret encoding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56277
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Evan Cheng [Wed, 17 Sep 2008 07:16:21 +0000 (07:16 +0000)]
Specify instruction encoding using range list to avoid endianess issues.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56276
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Evan Cheng [Wed, 17 Sep 2008 06:29:52 +0000 (06:29 +0000)]
Add instruction names as comments to InstBits entries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56275
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Dan Gohman [Wed, 17 Sep 2008 01:39:10 +0000 (01:39 +0000)]
Simplify and generalize X86DAGToDAGISel::CanBeFoldedBy, and draw
up some new ascii art to illustrate what it does. This change
currently has no effect on generated code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56270
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Dan Gohman [Wed, 17 Sep 2008 00:43:24 +0000 (00:43 +0000)]
Add a new MachineInstr-level DCE pass. It is very simple, and is intended to
be used with fast-isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56268
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Bill Wendling [Wed, 17 Sep 2008 00:30:57 +0000 (00:30 +0000)]
Add trampoline support to PPC. GCC simply calls the "__trampoline_setup"
function with appropriate parameters. This allows us to support blocks on PPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56267
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Devang Patel [Wed, 17 Sep 2008 00:01:04 +0000 (00:01 +0000)]
Fix cut-n-pasto.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56265
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Evan Cheng [Tue, 16 Sep 2008 23:12:11 +0000 (23:12 +0000)]
When converting a CopyFromReg to a copy instruction, use the register class of its uses to determine the right destination register class of the copy. This is important for targets where a physical register may belong to multiple register classes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56258
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Devang Patel [Tue, 16 Sep 2008 22:26:44 +0000 (22:26 +0000)]
Remove.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56256
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Devang Patel [Tue, 16 Sep 2008 22:25:14 +0000 (22:25 +0000)]
Add -O1, -O2 and -O3 that matches llvm-gcc's -O1, -O2 and -O3 respectively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56255
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Dan Gohman [Tue, 16 Sep 2008 22:05:41 +0000 (22:05 +0000)]
Change SelectionDAG::getConstantPool to always set the alignment of the
ConstantPoolSDNode, using the target's preferred alignment for the
constant type.
In LegalizeDAG, when performing loads from the constant pool, the
ConstantPoolSDNode's alignment is used in the calls to getLoad and
getExtLoad.
This change prevents SelectionDAG::getLoad/getExtLoad from incorrectly
choosing the ABI alignment for constant pool loads when Alignment == 0.
The incorrect alignment is only a performance issue when ABI alignment
does not equal preferred alignment (i.e., on x86 it was generating
MOVUPS instead of MOVAPS for v4f32 constant loads when the default ABI
alignment for 128bit vectors is forced to 1 byte.)
Patch by Paul Redmond!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56253
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Bill Wendling [Tue, 16 Sep 2008 21:48:12 +0000 (21:48 +0000)]
Reverting r56249. On further investigation, this functionality isn't needed.
Apologies for the thrashing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56251
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Dan Gohman [Tue, 16 Sep 2008 21:18:22 +0000 (21:18 +0000)]
Include the alignment value when displaying ConstantPoolSDNodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56250
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Bill Wendling [Tue, 16 Sep 2008 21:12:30 +0000 (21:12 +0000)]
- Change "ExternalSymbolSDNode" to "SymbolSDNode".
- Add linkage to SymbolSDNode (default to external).
- Change ISD::ExternalSymbol to ISD::Symbol.
- Change ISD::TargetExternalSymbol to ISD::TargetSymbol
These changes pave the way to allowing SymbolSDNodes with non-external linkage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56249
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Dan Gohman [Tue, 16 Sep 2008 20:45:53 +0000 (20:45 +0000)]
Fix these comments to reflect current reality. Surprisingly,
MachineConstantPool::getConstantPoolIndex actually expects
a log2-encoded alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56248
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Dan Gohman [Tue, 16 Sep 2008 18:52:57 +0000 (18:52 +0000)]
Finally re-apply r46959. This is made feasible by the combination
of r56230, r56232, and r56246.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56247
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Dan Gohman [Tue, 16 Sep 2008 18:46:06 +0000 (18:46 +0000)]
Improve instcombine's handling of integer min and max in two ways:
- Recognize expressions like "x > -1 ? x : 0" as min/max and turn them
into expressions like "x < 0 ? 0 : x", which is easily recognizable
as a min/max operation.
- Refrain from folding expression like "y/2 < 1" to "y < 2" when the
comparison is being used as part of a min or max idiom, like
"y/2 < 1 ? 1 : y/2". In that case, the division has another use, so
folding doesn't eliminate it, and obfuscates the min/max, making it
harder to recognize as a min/max operation.
These benefit ScalarEvolution, CodeGen, and anything else that wants to
recognize integer min and max.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56246
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Evan Cheng [Tue, 16 Sep 2008 17:28:18 +0000 (17:28 +0000)]
AllocateRWXMemory -> AllocateRWX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56244
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Dan Gohman [Tue, 16 Sep 2008 16:44:00 +0000 (16:44 +0000)]
FCmpInst predicates UNO, ORD, FALSE, and TRUE are commutative.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56243
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Bill Wendling [Tue, 16 Sep 2008 06:40:04 +0000 (06:40 +0000)]
Fix test to account for no more whitespace and that one of the matches is the
"declare" statement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56241
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Bill Wendling [Tue, 16 Sep 2008 06:30:47 +0000 (06:30 +0000)]
Remove space that was forgotten.`
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56240
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Dan Gohman [Tue, 16 Sep 2008 01:42:28 +0000 (01:42 +0000)]
Don't take the time to CheckDAGForTailCallsAndFixThem when tail calls
are not enabled. Instead just omit the tail call flag when calls are
created.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56235
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Dan Gohman [Tue, 16 Sep 2008 01:37:08 +0000 (01:37 +0000)]
Fix spacing in the grep line for this test, following the recent
SCEV-whitespace changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56234
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Dan Gohman [Tue, 16 Sep 2008 01:01:33 +0000 (01:01 +0000)]
Re-enables the new vector select in the bitcode reader, by modifying the
bitcode reader/writer as follows:
- add and use new bitcode FUNC_CODE_INST_VSELECT to handle the llvm
select opcode using either i1 or [N x i1] as the selector.
- retain old BITCODE FUNC_CODE_INST_SELECT in the bitcode reader to
handle select on i1 for backwards compatibility with existing bitcode
files.
- re-enable the vector-select.ll test program.
Also, rename the recently added bitcode opcode FUNC_CODE_INST_VCMP to
FUNC_CODE_INST_CMP2 and make the bitcode writer use it to handle
fcmp/icmp on scalars or vectors. In the bitcode writer, use
FUNC_CODE_INST_CMP for vfcmp/vicmp only. In the bitcode reader, have
FUNC_CODE_INST_CMP handle icmp/fcmp returning bool, for backwards
compatibility with existing bitcode files.
Patch by Preston Gurd!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56233
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Dan Gohman [Mon, 15 Sep 2008 22:18:04 +0000 (22:18 +0000)]
Teach ScalarEvolution to consider loop preheaders in the search for
an if statement that guards a loop, to allow indvars to avoid smax
operations in more situations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56232
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Owen Anderson [Mon, 15 Sep 2008 22:00:38 +0000 (22:00 +0000)]
Live intervals for live-in registers should begin at the beginning of a basic block, not at the first
instruction. Also, their valno's should have an unknown def. This has no effect currently, but was
causing issues when StrongPHIElimination was enabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56231
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Dan Gohman [Mon, 15 Sep 2008 21:22:06 +0000 (21:22 +0000)]
Teach LSR to optimize away SMAX operations for tripcounts in common
cases. See the comment above OptimizeSMax for the full story, and
the testcase for an example. This cancels out a pessimization
commonly attributed to indvars, and will allow us to lift some of
the artificial throttles in indvars, rather than add new ones.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56230
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Devang Patel [Mon, 15 Sep 2008 21:13:42 +0000 (21:13 +0000)]
Extract optimization pass selection code from llvm-gcc into a separate routine.
This can be used by other stand alone tools, such as 'opt'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56229
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Bruno Cardoso Lopes [Mon, 15 Sep 2008 21:06:55 +0000 (21:06 +0000)]
Fixed Bug 2751
http://llvm.org/bugs/show_bug.cgi?id=2751
Abicall was enabled even when static code model was provided
in the command line.
The correct behavior is to disable abicall when static is
specified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56228
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Dan Gohman [Mon, 15 Sep 2008 19:46:03 +0000 (19:46 +0000)]
Re-enable SelectionDAG CSE for calls. It matters in the case of
libcalls, as in this testcase on ARM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56226
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