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Jakob Stoklund Olesen [Fri, 5 Aug 2011 18:47:07 +0000 (18:47 +0000)]
Fix liveness computations in BranchFolding.
The old code would look at kills and defs in one pass over the
instruction operands, causing problems with this code:
%R0<def>, %CPSR<def,dead> = tLSLri %R5<kill>, 2, pred:14, pred:%noreg
%R0<def>, %CPSR<def,dead> = tADDrr %R4<kill>, %R0<kill>, pred:14, %pred:%noreg
The last instruction kills and redefines %R0, so it is still live after
the instruction.
This caused a register scavenger crash when compiling 483.xalancbmk for
armv6. I am not including a test case because it requires too much bad
luck to expose this old bug.
First you need to convince the register allocator to use %R0 twice on
the tADDrr instruction, then you have to convince BranchFolding to do
something that causes it to run the register scavenger on he bad block.
<rdar://problem/
9898200>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136973
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Jim Grosbach [Fri, 5 Aug 2011 16:11:38 +0000 (16:11 +0000)]
ARM simplify the postidx_reg operand encoding.
The immediate portion of the operand is just a boolean (the 'U' bit indicating
add vs. subtract). Treat it as such.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136969
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Jim Grosbach [Fri, 5 Aug 2011 15:48:21 +0000 (15:48 +0000)]
ARM use a dedicated printer for postidx_reg operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136968
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Bob Wilson [Fri, 5 Aug 2011 07:24:09 +0000 (07:24 +0000)]
Add missing register constraint for some VLD3/VLD4 pseudo instructions.
<rdar://problem/
9878189>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136962
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Chandler Carruth [Fri, 5 Aug 2011 01:08:21 +0000 (01:08 +0000)]
Silence unused variable warnings in release builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136956
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Jason W Kim [Fri, 5 Aug 2011 00:53:03 +0000 (00:53 +0000)]
Fix llvm.org/bugs/show_bug.cgi?id=10583\n - test for 1 and 2 byte fixups to be added
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136954
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Chandler Carruth [Fri, 5 Aug 2011 00:51:31 +0000 (00:51 +0000)]
Temporarily revert r135528 which distinguishes between two copies of one
inlined variable, based on the discussion in PR10542.
This explodes the runtime of several passes down the pipeline due to
a large number of "copies" remaining live across a large function. This
only shows up with both debug and opt, but when it does it creates
a many-minute compile when self-hosting LLVM+Clang. There are several
other cases that show these types of regressions.
All of this is tracked in PR10542, and progress is being made on fixing
the issue. Once its addressed, the re-instated, but until then this
restores the performance for self-hosting and other opt+debug builds.
Devang, let me know if this causes any trouble, or impedes fixing it in
any way, and thanks for working on this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136953
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Owen Anderson [Thu, 4 Aug 2011 23:18:05 +0000 (23:18 +0000)]
Fix broken encodings for the Thumb2 LDRD/STRD instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136942
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Jim Grosbach [Thu, 4 Aug 2011 23:01:30 +0000 (23:01 +0000)]
ARM assembly parsing and encoding for LDR instructions.
Enhance support for LDR instruction assembly parsing for post-indexed
addressing with immediate values. Add tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136940
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Jakob Stoklund Olesen [Thu, 4 Aug 2011 21:06:09 +0000 (21:06 +0000)]
Count the total amount of stack space used in compiled functions.
Patch by Ivan Krasin!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136921
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Devang Patel [Thu, 4 Aug 2011 20:44:26 +0000 (20:44 +0000)]
Print DBG_VALUE variable's location info as a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136916
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Devang Patel [Thu, 4 Aug 2011 20:42:11 +0000 (20:42 +0000)]
Increment counter inside insertDebugValue().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136915
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Devang Patel [Thu, 4 Aug 2011 20:02:18 +0000 (20:02 +0000)]
We need to map DebugLoc. It leads to Fuction * (through subprogram entry node) which should be appropriately mapped.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136910
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Devang Patel [Thu, 4 Aug 2011 19:44:28 +0000 (19:44 +0000)]
Linke NamedMDNodes after linking global values as comment suggests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136909
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Chris Lattner [Thu, 4 Aug 2011 19:31:26 +0000 (19:31 +0000)]
allow \r's in .s files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136908
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Roman Divacky [Thu, 4 Aug 2011 19:08:19 +0000 (19:08 +0000)]
Introduce adjustFixupOffset that adjusts the fixup offset of a relocation.
This is meant to be overriden by backends. Implement an override on PowerPC
which adjusts the offset by 2 for ha16/lo16 relocation kinds. This removes
a commented out hack and enables hello world to be compiled on PowerPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136905
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Devang Patel [Thu, 4 Aug 2011 18:45:38 +0000 (18:45 +0000)]
Add counter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136901
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Evan Cheng [Thu, 4 Aug 2011 18:40:26 +0000 (18:40 +0000)]
Fix an obvious type. Patch by Ivan Krasin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136900
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Evan Cheng [Thu, 4 Aug 2011 18:38:15 +0000 (18:38 +0000)]
Fix an obvious type. Patch by Ivan Krasin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136899
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Owen Anderson [Thu, 4 Aug 2011 18:24:14 +0000 (18:24 +0000)]
LDCL_POST and STCL_POST need one's-complement offsets, rather than two's complement offsets. Add an appropriate immediate type for them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136896
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Rafael Espindola [Thu, 4 Aug 2011 17:00:11 +0000 (17:00 +0000)]
Fix the bitwidth of the remaining fields.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136884
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Duncan Sands [Thu, 4 Aug 2011 16:01:54 +0000 (16:01 +0000)]
Fix a place that was clearly forgotten when the type legalization
logic moved over to its own enum. Noticed by Andrey Karpov with
the PVS-studio tool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136881
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Rafael Espindola [Thu, 4 Aug 2011 15:50:13 +0000 (15:50 +0000)]
print st_shndx with the correct number of bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136880
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Duncan Sands [Thu, 4 Aug 2011 15:45:59 +0000 (15:45 +0000)]
Add obviously missing "break". Noticed by Andrey Karpov with
the PVS-studio tool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136878
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Rafael Espindola [Thu, 4 Aug 2011 15:38:19 +0000 (15:38 +0000)]
print st_other with the correct number of bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136877
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Rafael Espindola [Thu, 4 Aug 2011 15:24:00 +0000 (15:24 +0000)]
print st_type with the correct number of bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136875
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Rafael Espindola [Thu, 4 Aug 2011 15:10:35 +0000 (15:10 +0000)]
Print st_bind with the correct number of bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136874
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Rafael Espindola [Thu, 4 Aug 2011 14:48:27 +0000 (14:48 +0000)]
Print r_sym with the correct number of bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136873
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Rafael Espindola [Thu, 4 Aug 2011 14:39:30 +0000 (14:39 +0000)]
Print r_type with the correct number of bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136872
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Rafael Espindola [Thu, 4 Aug 2011 14:27:46 +0000 (14:27 +0000)]
Another counter goes decimal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136871
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Rafael Espindola [Thu, 4 Aug 2011 14:01:03 +0000 (14:01 +0000)]
Change anther counter to decimal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136870
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Rafael Espindola [Thu, 4 Aug 2011 13:39:15 +0000 (13:39 +0000)]
Don't print a counter in hex.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136869
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Rafael Espindola [Thu, 4 Aug 2011 13:05:26 +0000 (13:05 +0000)]
Add an assert to check that the Addend fits the file format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136868
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Rafael Espindola [Thu, 4 Aug 2011 13:00:24 +0000 (13:00 +0000)]
Print all the bits in the addend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136867
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Jay Foad [Thu, 4 Aug 2011 10:43:43 +0000 (10:43 +0000)]
Reword.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136866
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Duncan Sands [Thu, 4 Aug 2011 10:02:21 +0000 (10:02 +0000)]
Fix what seems an obvious typo. Patch by Ivan Krasin. Problem
reported at http://habrahabr.ru/blogs/compilers/125626/.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136865
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Andrew Trick [Thu, 4 Aug 2011 01:04:37 +0000 (01:04 +0000)]
Reverting r136884 updateUnloop, which crashed a linux builder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136857
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Jason W Kim [Thu, 4 Aug 2011 00:38:45 +0000 (00:38 +0000)]
Fix http://llvm.org/bugs/show_bug.cgi?id=10568
Move the reloc size assert into AsmBackend - where it is more apropos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136855
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Bill Wendling [Thu, 4 Aug 2011 00:32:58 +0000 (00:32 +0000)]
Only access both operands of an INSERT_SUBVECTOR if it is an INSERT_SUBVECTOR.
Fixes PR10527.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136853
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Jim Grosbach [Wed, 3 Aug 2011 23:50:40 +0000 (23:50 +0000)]
ARM refactoring assembly parsing of memory address operands.
Memory operand parsing is a bit haphazzard at the moment, in no small part
due to the even more haphazzard representations of memory operands in the .td
files. Start cleaning that all up, at least a bit.
The addressing modes in the .td files will be being simplified to not be
so monolithic, especially with regards to immediate vs. register offsets
and post-indexed addressing. addrmode3 is on its way with this patch, for
example.
This patch is foundational to enable going back to smaller incremental patches
for the individual memory referencing instructions themselves. It does just
enough to get the basics in place and handle the "make check" regression tests
we already have.
Follow-up work will be fleshing out the details and adding more robust test
cases for the individual instructions, starting with ARM mode and moving from
there into Thumb and Thumb2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136845
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Andrew Trick [Wed, 3 Aug 2011 23:50:25 +0000 (23:50 +0000)]
An algorithm for incrementally updating LoopInfo within a
LoopPassManager. The incremental update should be extremely cheap in
most cases and can be used in places where it's not feasible to
regenerate the entire loop forest.
- "Unloop" is a node in the loop tree whose last backedge has been removed.
- Perform reverse dataflow on the block inside Unloop to propagate the
nearest loop from the block's successors.
- For reducible CFG, each block in unloop is visited exactly
once. This is because unloop no longer has a backedge and blocks
within subloops don't change parents.
- Immediate subloops are summarized by the nearest loop reachable from
their exits or exits within nested subloops.
- At completion the unloop blocks each have a new parent loop, and
each immediate subloop has a new parent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136844
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Andrew Trick [Wed, 3 Aug 2011 23:45:50 +0000 (23:45 +0000)]
whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136843
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Jakob Stoklund Olesen [Wed, 3 Aug 2011 23:44:31 +0000 (23:44 +0000)]
Correctly handle multiple DBG_VALUE instructions at the same SlotIndex.
It is possible to have multiple DBG_VALUEs for the same variable:
32L TEST32rr %vreg0<kill>, %vreg0, %EFLAGS<imp-def>; GR32:%vreg0
DBG_VALUE 2, 0, !"i"
DBG_VALUE %noreg, %0, !"i"
When that happens, keep the last one instead of the first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136842
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Andrew Trick [Wed, 3 Aug 2011 23:43:49 +0000 (23:43 +0000)]
whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136840
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Andrew Trick [Wed, 3 Aug 2011 23:27:28 +0000 (23:27 +0000)]
An interface for iterating over a loop's blocks in DFS order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136838
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Owen Anderson [Wed, 3 Aug 2011 23:21:48 +0000 (23:21 +0000)]
Fix broken encoding of tCBNZ.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136837
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Jakob Stoklund Olesen [Wed, 3 Aug 2011 23:16:09 +0000 (23:16 +0000)]
Enable compact region splitting by default.
This helps generate better code in functions with high register
pressure.
The previous version of compact region splitting caused regressions
because the regions were a bit too large. A stronger negative bias
applied in r136832 fixed this problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136836
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Devang Patel [Wed, 3 Aug 2011 23:13:55 +0000 (23:13 +0000)]
Do not drop undef debug values. These are used as range termination marker by live debug variable pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136834
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Benjamin Kramer [Wed, 3 Aug 2011 23:13:01 +0000 (23:13 +0000)]
Remove underscore that's breaking linux buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136833
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Jakob Stoklund Olesen [Wed, 3 Aug 2011 23:09:38 +0000 (23:09 +0000)]
Be more conservative when forming compact regions.
Apply twice the negative bias on transparent blocks when computing the
compact regions. This excludes loop backedges from the region when only
one of the loop blocks uses the register.
Previously, we would include the backedge in the region if the loop
preheader and the loop latch both used the register, but the loop header
didn't.
When both the header and latch blocks use the register, we still keep it
live on the backedge.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136832
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Chandler Carruth [Wed, 3 Aug 2011 23:07:27 +0000 (23:07 +0000)]
Fix some warnings from Clang in release builds:
lib/CodeGen/RegAllocGreedy.cpp:1176:18: warning: unused variable 'B' [-Wunused-variable]
if (unsigned B = Cand.getBundles(BundleCand, BestCand)) {
^
lib/CodeGen/RegAllocGreedy.cpp:1188:18: warning: unused variable 'B' [-Wunused-variable]
if (unsigned B = Cand.getBundles(BundleCand, 0)) {
^
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136831
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Jakub Staszak [Wed, 3 Aug 2011 22:53:41 +0000 (22:53 +0000)]
Fix typo in #include which revealed in the case-sensitive filesystem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136828
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Jakub Staszak [Wed, 3 Aug 2011 22:34:43 +0000 (22:34 +0000)]
Use MachineBranchProbabilityInfo in If-Conversion instead of its own heuristics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136826
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Bill Wendling [Wed, 3 Aug 2011 22:18:20 +0000 (22:18 +0000)]
Remove the LowerSetJmp pass. It wasn't used effectively by any of the targets.
This is some of my original LLVM code. *wipes tear*
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136821
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Owen Anderson [Wed, 3 Aug 2011 21:52:15 +0000 (21:52 +0000)]
Add accessors for manipulating an MCInst's operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136818
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Jakub Staszak [Wed, 3 Aug 2011 21:30:57 +0000 (21:30 +0000)]
Add more constantness in BlockFrequencyInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136816
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Evan Cheng [Wed, 3 Aug 2011 21:07:01 +0000 (21:07 +0000)]
Kill the export list as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136814
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Eli Friedman [Wed, 3 Aug 2011 21:06:02 +0000 (21:06 +0000)]
New approach to r136737: insert the necessary fences for atomic ops in platform-independent code, since a bunch of platforms (ARM, Mips, PPC, Alpha are the relevant targets here) need to do essentially the same thing.
I think this completes the basic CodeGen for atomicrmw and cmpxchg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136813
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Bill Wendling [Wed, 3 Aug 2011 20:53:38 +0000 (20:53 +0000)]
Remove CreateUnwind from the IRBuillder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136811
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Benjamin Kramer [Wed, 3 Aug 2011 19:53:48 +0000 (19:53 +0000)]
Remove unused variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136803
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Bob Wilson [Wed, 3 Aug 2011 19:42:51 +0000 (19:42 +0000)]
Some revisions to Devang's change r136759 for merged global debug info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136802
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Bill Wendling [Wed, 3 Aug 2011 18:37:32 +0000 (18:37 +0000)]
Go back to the old definition. It's not clear that a 'resume' can be 'outlined' from the function with the landing pad for all platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136799
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Andrew Trick [Wed, 3 Aug 2011 18:32:11 +0000 (18:32 +0000)]
SCEV: Use AssertingVH to catch dangling BasicBlock* when passes forget
to notify SCEV of a change. Add forgetLoop in a couple of those places.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136797
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Andrew Trick [Wed, 3 Aug 2011 18:28:21 +0000 (18:28 +0000)]
whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136795
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Bill Wendling [Wed, 3 Aug 2011 17:17:06 +0000 (17:17 +0000)]
Explain how clauses are applied.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136790
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Jakob Stoklund Olesen [Wed, 3 Aug 2011 16:33:19 +0000 (16:33 +0000)]
Handle IMPLICIT_DEF instructions in X86FloatingPoint.
This fixes PR10575.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136787
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Jay Foad [Wed, 3 Aug 2011 10:05:04 +0000 (10:05 +0000)]
Use cast<> instead of a C-style cast to get some free assertions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136771
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Chris Lattner [Wed, 3 Aug 2011 06:15:41 +0000 (06:15 +0000)]
fix PR10286, a problem with the .ll printer handling block addresses that are out-of-scope.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136768
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Devang Patel [Wed, 3 Aug 2011 01:25:46 +0000 (01:25 +0000)]
Use byte offset, instead of element number, to access merged global.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136759
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Nick Lewycky [Wed, 3 Aug 2011 01:11:40 +0000 (01:11 +0000)]
Small cleanups:
- use SmallVectorImpl& for the function argument.
- ignore the operands on the GEP, even if they aren't constant! Much as we
pretend the malloc succeeds, we pretend that malloc + whatever-you-GEP'd-by
is not null. It's magic!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136757
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Bill Wendling [Wed, 3 Aug 2011 01:07:57 +0000 (01:07 +0000)]
Add this back in for now. There are still a few passes which create unwind instructions at the moment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136756
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Nick Lewycky [Wed, 3 Aug 2011 00:43:35 +0000 (00:43 +0000)]
Fix logical error when detecting lifetime intrinsics.
Don't replace a gep/bitcast with 'undef' because that will form a "free(undef)"
which in turn means "unreachable". What we wanted was a no-op. Instead, analyze
the whole tree and look for all the instructions we need to delete first, then
delete them second, not relying on the use_list to stay consistent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136752
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Bill Wendling [Wed, 3 Aug 2011 00:30:19 +0000 (00:30 +0000)]
Replace the 'UnwindInst' check with a check for 'ResumeInst', which also exits
the function, because the UnwindInst is going away.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136751
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Jakob Stoklund Olesen [Tue, 2 Aug 2011 23:04:08 +0000 (23:04 +0000)]
Use the precomputed def presence in RAGreedy::calcSpillCost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136742
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Jakob Stoklund Olesen [Tue, 2 Aug 2011 23:04:06 +0000 (23:04 +0000)]
Inform SpillPlacement about blocks with defs.
This information is not used for anything yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136741
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Jakob Stoklund Olesen [Tue, 2 Aug 2011 22:54:14 +0000 (22:54 +0000)]
Rename {First,Last}Use to {First,Last}Instr.
With a 'FirstDef' field right there, it is very confusing that FirstUse
refers to an instruction that may be a def.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136739
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Evan Cheng [Tue, 2 Aug 2011 22:53:48 +0000 (22:53 +0000)]
lldb doesn't need the edis dylib any more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136738
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Eli Friedman [Tue, 2 Aug 2011 22:44:16 +0000 (22:44 +0000)]
ARM backend support for atomicrmw and cmpxchg with non-monotonic ordering. Not especially pretty, but seems to work well enough. If this looks okay, I'll put together similar patches for Mips, PPC, and Alpha.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136737
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Jakob Stoklund Olesen [Tue, 2 Aug 2011 22:37:22 +0000 (22:37 +0000)]
Add a BlockInfo::FirstDef field.
This is either an invalid SlotIndex, or valno->def for the first value
defined inside the block. PHI values are not counted as defined inside
the block.
The FirstDef field will be used when estimating the cost of spilling
around a block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136736
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Jakob Stoklund Olesen [Tue, 2 Aug 2011 22:37:20 +0000 (22:37 +0000)]
Delete BlockInfo::LiveThrough. It wasn't used any more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136735
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Nick Lewycky [Tue, 2 Aug 2011 22:08:01 +0000 (22:08 +0000)]
Teach InstCombine that lifetime intrincs aren't a real user on the result of a
malloc call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136732
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Jakob Stoklund Olesen [Tue, 2 Aug 2011 21:53:03 +0000 (21:53 +0000)]
Extend the SpillPlacement interface with two new features.
The PrefBoth constraint is used for blocks that ideally want a live-in
value both on the stack and in a register. This would be used by a block
that has a use before interference forces a spill.
Secondly, add the ChangesValue flag to BlockConstraint. This tells
SpillPlacement if a live-in value on the stack can be reused as a
live-out stack value for free. If the block redefines the virtual
register, a spill would be required for that.
This extra information will be used by SpillPlacement to more accurately
calculate spill costs when a value can exist both on the stack and in a
register.
The simplest example is a basic block that reads the virtual register,
but doesn't change its value. Spilling around such a block requires a
reload, but no spill in the block.
The spiller already knows this, but the spill placer doesn't. That can
sometimes lead to suboptimal regions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136731
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Bill Wendling [Tue, 2 Aug 2011 21:52:38 +0000 (21:52 +0000)]
Add the documentation for the 'landingpad' instruction. Improve the 'invoke'
instruction's documentation to reference the landingpad and resume instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136729
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Rafael Espindola [Tue, 2 Aug 2011 21:50:27 +0000 (21:50 +0000)]
Move methods in PassManagerBuilder offline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136727
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Rafael Espindola [Tue, 2 Aug 2011 21:50:24 +0000 (21:50 +0000)]
move PassManagerBuilder.h to IPO. This is a non intuitive place to put it,
but it solves a layering violation since things in Support are not supposed to
use things in Transforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136726
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Eli Friedman [Tue, 2 Aug 2011 21:35:16 +0000 (21:35 +0000)]
Add new atomic instructions to SCCP. No functional change, but stops debug spam.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136723
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Nick Lewycky [Tue, 2 Aug 2011 21:19:27 +0000 (21:19 +0000)]
Lifetime intrinsics on undef are dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136722
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Chad Rosier [Tue, 2 Aug 2011 20:53:43 +0000 (20:53 +0000)]
Update the default bug report url in autoconf.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136721
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Chris Lattner [Tue, 2 Aug 2011 20:29:13 +0000 (20:29 +0000)]
no need to count the terminators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136718
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Rafael Espindola [Tue, 2 Aug 2011 20:24:22 +0000 (20:24 +0000)]
Assume .cfi_startproc is the first thing in a function. If the function is
externally visable, create a local symbol to use in the CFE. If not, use the
function label itself.
Fixes PR10420.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136716
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Eli Friedman [Tue, 2 Aug 2011 18:38:35 +0000 (18:38 +0000)]
Don't create a ridiculous EXTRACT_ELEMENT. PR10563.
The testcase looks extremely fragile, so I'm adding an assertion which should catch any cases like this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136711
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Owen Anderson [Tue, 2 Aug 2011 18:30:00 +0000 (18:30 +0000)]
Fix the broken encodings for the VFP vmov.f32 and vmov.f64 instructions, as well as the comments that explain them incorrectly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136707
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Jim Grosbach [Tue, 2 Aug 2011 18:16:36 +0000 (18:16 +0000)]
Tidy up. 80 columns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136705
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Jim Grosbach [Tue, 2 Aug 2011 18:07:32 +0000 (18:07 +0000)]
ARM: rename addrmode7 to addr_offset_none.
Use a more descriptive name so the code is more self-documenting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136704
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Roman Divacky [Tue, 2 Aug 2011 16:15:32 +0000 (16:15 +0000)]
Comment out the PPC relocation offset adjustment. It must be done differently.
This unbreaks some tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136692
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Bruno Cardoso Lopes [Tue, 2 Aug 2011 16:06:18 +0000 (16:06 +0000)]
Make this kind of lowering to be supported by 256-bit instructions:
shuffle (scalar_to_vector (load (ptr + 4))), undef, <0, 0, 0, 0>
To:
shuffle (vload ptr)), undef, <1, 1, 1, 1>
Fix PR10494
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136691
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Roman Divacky [Tue, 2 Aug 2011 15:54:03 +0000 (15:54 +0000)]
Remove trailing semicolon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136690
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Roman Divacky [Tue, 2 Aug 2011 15:51:38 +0000 (15:51 +0000)]
Sketch out PowerPC ELF writer. This is enough to get clang -integrated-as
to compile a working hello world on FreeBSD/PPC32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136689
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Bill Wendling [Tue, 2 Aug 2011 06:39:13 +0000 (06:39 +0000)]
Duncan's english is better than mine. :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136684
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Bill Wendling [Tue, 2 Aug 2011 06:20:17 +0000 (06:20 +0000)]
Remove the LLVMBuildUnwind C API function.
The 'unwind' function is going away with the new EH rewrite. This is step 0 in
keeping front-ends from using it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136683
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