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Author SHA1 Message Date
Bill Wendling
9ad453e943 Add the new `-no-builtin' flag. This flag is meant to mimic the GCC 
`-fno-builtin' flag. Currently, it's used to replace "memset" with "_bzero"
instead of "__bzero" on Darwin10+. This arguably violates the meaning of this
flag, but is currently sufficient. The meaning of this flag should become more
specific over time.

llvm-svn: 56885
 2008-09-30 21:22:07 +00:00
Dan Gohman
19530c810d Move the primary fast-isel top-level comments to FastISel.cpp, where 
they'll be a little more visible. Also, update and reword them a bit.

llvm-svn: 56877
 2008-09-30 20:48:29 +00:00
Nuno Lopes
2219758606 add AU.setPreservesCFG() since this pass only adds and removes function attributes 
llvm-svn: 56868
 2008-09-30 18:34:38 +00:00
Dan Gohman
5a2169ee6e Optimize SelectionDAG's AssignTopologicalOrder even further. 
Completely eliminate the TopOrder std::vector. Instead, sort
the AllNodes list in place. This also eliminates the need to
call AllNodes.size(), a linear-time operation, before
performing the sort.

Also, eliminate the Sources temporary std::vector, since it
essentially duplicates the sorted result as it is being
built.

This also changes the direction of the topological sort
from bottom-up to top-down. The AllNodes list starts out in
roughly top-down order, so this reduces the amount of
reordering needed. Top-down is also more convenient for
Legalize, and ISel needed only minor adjustments.

llvm-svn: 56867
 2008-09-30 18:30:35 +00:00
Evan Cheng
7eea8fb7cd Add runStaticConstructorsDestructors which runs ctors / dtors of a single module. Patch by David Chisnall. 
llvm-svn: 56849
 2008-09-30 15:51:21 +00:00
Evan Cheng
1c8ff02eeb Re-apply 56835 along with header file changes. 
llvm-svn: 56848
 2008-09-30 15:44:16 +00:00
Duncan Sands
f5f028df85 Stacker is dead. 
llvm-svn: 56844
 2008-09-30 15:18:29 +00:00
Duncan Sands
a2c8482495 Revert commit 56835 since it breaks the build. 
"If a re-materializable instruction has a register
operand, the spiller will change the register operand's
spill weight to HUGE_VAL to avoid it being spilled.
However, if the operand is already in the queue ready
to be spilled, avoid re-materializing it".

llvm-svn: 56837
 2008-09-30 10:00:30 +00:00
Evan Cheng
4eee17f4fb If a re-materializable instruction has a register operand, the spiller will change the register operand's spill weight to HUGE_VAL to avoid it being spilled. However, if the operand is already in the queue ready to be spilled, avoid re-materializing it. 
llvm-svn: 56835
 2008-09-30 06:36:58 +00:00
Nick Lewycky
9e918179c8 Fix misoptimization of: xor i1 (icmp eq (X, C1), icmp s[lg]t (X, C2)) 
llvm-svn: 56834
 2008-09-30 06:08:34 +00:00
Dan Gohman
b5824675e4 Fix X86FastISel's output for x86-32 PIC constant pool addresses. 
llvm-svn: 56829
 2008-09-30 01:21:32 +00:00
Dan Gohman
c28f40a821 Move the GlobalBaseReg field out of X86ISelDAGToDAG.cpp 
and X86FastISel.cpp into X86MachineFunction.h, so that it
can be shared, instead of having each selector keep track
of its own.

llvm-svn: 56825
 2008-09-30 00:58:23 +00:00
Dan Gohman
e76be890c9 Disable all x87 usage, including f32 and f64 when the subtarget 
doesn't have SSE(2), with X86FastISel.

llvm-svn: 56823
 2008-09-30 00:48:39 +00:00
Dale Johannesen
52987eab6e Remove misuse of ReplaceNodeResults for atomics with 
valid types.  No functional change.

llvm-svn: 56808
 2008-09-29 22:25:26 +00:00
Dan Gohman
f78676d0b6 Fix FastISel to not initialize the PIC-base register multiple times 
in functions with PIC references from more than one basic block.

llvm-svn: 56807
 2008-09-29 21:55:50 +00:00
Dan Gohman
c6184c4473 Fix an over-pessimization about GlobalVariable addresses in X86FastISel. 
llvm-svn: 56802
 2008-09-29 21:13:15 +00:00
Devang Patel
7536edca09 Support inreg, zext and sext as return value attributes. 
llvm-svn: 56801
 2008-09-29 20:49:50 +00:00
Devang Patel
1721a1a319 Fix grammar. 
llvm-svn: 56796
 2008-09-29 18:34:44 +00:00
Devang Patel
f9711b6002 Fix grammer. 
llvm-svn: 56795
 2008-09-29 18:16:38 +00:00
Devang Patel
ed4b84c801 Fix sentence. 
llvm-svn: 56794
 2008-09-29 18:16:09 +00:00
Evan Cheng
b749199c34 Fix PR2835. Do not change the width of a volatile load. 
llvm-svn: 56792
 2008-09-29 17:26:18 +00:00
Duncan Sands
187322048e Speed up these passes when the callgraph has 
huge simply connected components.  Suggested
by Chris.

llvm-svn: 56787
 2008-09-29 14:59:04 +00:00
Nuno Lopes
a4d69747c1 remove redundant test (mayBeOverriden() includes hasLinkOnceLinkage) 
llvm-svn: 56786
 2008-09-29 14:40:32 +00:00
Duncan Sands
60dc0b5cbe Tweak some comments. 
llvm-svn: 56784
 2008-09-29 13:35:31 +00:00
Matthijs Kooijman
4dd694b586 Add some hands-on documentation about which files to create and edit when 
adding a backend.

llvm-svn: 56783
 2008-09-29 11:52:22 +00:00
Duncan Sands
651eeb4be2 Rename isWeakForLinker to mayBeOverridden. Use it 
instead of hasWeakLinkage in a bunch of optimization
passes.

llvm-svn: 56782
 2008-09-29 11:25:42 +00:00
Matthijs Kooijman
9fb8d5f5b1 Add a testcase showing that scalarrepl supports first class structs. 
I originally made this script to show that scalarrepl didn't support them, but
it turned out it does. Better to still add the testcase then.

llvm-svn: 56781
 2008-09-29 10:42:13 +00:00
Dan Gohman
ac7d848c4b Move the code that handles DAGISel error conditions into 
helper functions instead of duplicating it inline each time
it is needed. This eliminates a few hundred or so copies
of this code in each target.

llvm-svn: 56759
 2008-09-27 23:53:14 +00:00
Daniel Dunbar
fe82c1180a Add IRBuilder::{CreateIsNull, CreateIsNonNull} helper methods. 
- I'm open to the idea that these could have better names. I think
   these read better than CreateEQNull and CreateNENull.

llvm-svn: 56757
 2008-09-27 23:22:55 +00:00
Evan Cheng
28d9b3a8ad Re-apply 56683 with fixes. 
llvm-svn: 56748
 2008-09-27 01:56:22 +00:00
Devang Patel
f0ed717e54 Update tests. 
llvm-svn: 56730
 2008-09-27 00:25:28 +00:00
Daniel Dunbar
dc1d75b1b5 Unbreak build. 
llvm-svn: 56727
 2008-09-27 00:22:09 +00:00
Bill Wendling
85a19dcb9e Add missing #include for asserts. 
llvm-svn: 56718
 2008-09-27 00:08:24 +00:00
Devang Patel
47a504c87c Implement function notes as function attributes. 
llvm-svn: 56716
 2008-09-26 23:51:19 +00:00
Dale Johannesen
54cc5b6eee Generated files for warning fix. 
llvm-svn: 56715
 2008-09-26 23:46:20 +00:00
Dale Johannesen
96018ccd87 Fix a compiler warning. 
llvm-svn: 56714
 2008-09-26 23:45:53 +00:00
Evan Cheng
d63fc80c1e Implement "punpckldq %xmm0, $xmm0" as "pshufd $0x50, %xmm0, %xmm" unless optimizing for code size. 
llvm-svn: 56711
 2008-09-26 23:41:32 +00:00
Devang Patel
e4e6ea0728 Now Attributes are divided in three groups 
- return attributes - inreg, zext and sext
- parameter attributes
- function attributes - nounwind, readonly, readnone, noreturn

Return attributes use 0 as the index.
Function attributes use ~0U as the index.

This patch requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56704
 2008-09-26 22:53:05 +00:00
Bill Wendling
7273078850 Temporarily reverting r56683. This is causing a failure during the build of llvm-gcc: 
/Volumes/Gir/devel/llvm/clean/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.obj/./gcc/ -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -mmacosx-version-min=10.4 -O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Gir/devel/llvm/clean/llvm.obj/include -I/Volumes/Gir/devel/llvm/clean/llvm.src/include -fexceptions -fvisibility=hidden -DHIDE_EXPORTS -c ../../llvm-gcc.src/gcc/unwind-dw2-fde-darwin.c -o libgcc/./unwind-dw2-fde-darwin.o
Assertion failed: (TargetRegisterInfo::isVirtualRegister(regA) && TargetRegisterInfo::isVirtualRegister(regB) && "cannot update physical register live information"), function runOnMachineFunction, file /Volumes/Gir/devel/llvm/clean/llvm.src/lib/CodeGen/TwoAddressInstructionPass.cpp, line 311.
../../llvm-gcc.src/gcc/unwind-dw2.c:1527: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
{standard input}:3521:non-relocatable subtraction expression, "_dwarf_reg_size_table" minus "L20$pb"
{standard input}:3521:symbol: "_dwarf_reg_size_table" can't be undefined in a subtraction expression
{standard input}:3520:non-relocatable subtraction expression, "_dwarf_reg_size_table" minus "L20$pb"
...

llvm-svn: 56703
 2008-09-26 22:10:44 +00:00
Dan Gohman
a9e963a0b4 Fix missing whitespace in the printing of function notes. 
llvm-svn: 56702
 2008-09-26 22:02:59 +00:00
Dan Gohman
989db64c93 Rename ConstantSDNode's getSignExtended to getSExtValue, for 
consistancy with ConstantInt, and re-implement it in terms
of ConstantInt's getSExtValue.

llvm-svn: 56700
 2008-09-26 21:54:37 +00:00
Dan Gohman
4735934d73 Make some minor reorganizations and comment changes to eliminate trivial 
differences between the CallInst and InvokeInst classes.

llvm-svn: 56699
 2008-09-26 21:38:45 +00:00
Dan Gohman
3bcb327e9c Mark lea fi# as being really rematerializable. 
llvm-svn: 56698
 2008-09-26 21:30:20 +00:00
Evan Cheng
5ce14d532c unpckhps requires sse1, punpckhdq requires sse2. 
llvm-svn: 56697
 2008-09-26 21:26:30 +00:00
Daniel Dunbar
fe7f42150a Update LICENSE link. 
llvm-svn: 56689
 2008-09-26 21:12:29 +00:00
Dan Gohman
401470e0c7 Fix X86FastISel's address folding to check displacement 
values for overflow.

llvm-svn: 56686
 2008-09-26 20:04:15 +00:00
Evan Cheng
9946443460 Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0. 
llvm-svn: 56683
 2008-09-26 19:48:35 +00:00
Oscar Fuentes
94d058ba4a CMake: Builds all examples. Corrected name of CBackend target. 
llvm-svn: 56682
 2008-09-26 19:48:03 +00:00
Dale Johannesen
9ce0f3e4b3 Generated files for previous patch. 
llvm-svn: 56679
 2008-09-26 19:32:34 +00:00
Dale Johannesen
423053d8a7 Another file I forgot. 
llvm-svn: 56678
 2008-09-26 19:31:53 +00:00