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Author SHA1 Message Date
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
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
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
Evan Cheng
28d9b3a8ad Re-apply 56683 with fixes. 
llvm-svn: 56748
 2008-09-27 01:56:22 +00:00
Daniel Dunbar
dc1d75b1b5 Unbreak build. 
llvm-svn: 56727
 2008-09-27 00:22:09 +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
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
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
Dale Johannesen
3f62c40108 Add "inreg" field to CallSDNode (doesn't increase 
its size).  Adjust various lowering functions to
pass this info through from CallInst.  Use it to
implement sseregparm returns on X86.  Remove
X86_ssecall calling convention.

llvm-svn: 56677
 2008-09-26 19:31:26 +00:00
Dan Gohman
56b0c33a9d Factor out the code for determining when symblic addresses 
require RIP-relative addressing and use it to fix a bug
in X86FastISel in x86-64 PIC mode, where it was trying to
use base/index registers with RIP-relative addresses. This
fixes a bunch of x86-64 testsuite failures.

llvm-svn: 56676
 2008-09-26 19:15:30 +00:00
Evan Cheng
b4d6625c85 Avoid spilling EBP / RBP twice in the prologue. 
llvm-svn: 56675
 2008-09-26 19:14:21 +00:00
Owen Anderson
70a6539add We don't need to insert copies for implicit_def's. 
llvm-svn: 56674
 2008-09-26 18:50:46 +00:00
Evan Cheng
0d612aad67 X86 address displacement field must be interpreted as a 32-bit value. 
llvm-svn: 56665
 2008-09-26 16:58:16 +00:00
Oscar Fuentes
65859a84d0 CMake: Builds all targets. 
llvm-svn: 56641
 2008-09-26 04:40:32 +00:00
Dan Gohman
37bd5a0d40 Disable support for x86_f80 in X86FastISel. Supporting it would 
require more work.

llvm-svn: 56637
 2008-09-26 01:39:32 +00:00
Bill Wendling
bf75299f0a If we have a function with an unreachable statement such that the ending debug 
information is in an unreachable block, then it's possible that the high/low pc
values won't be set for the dwarf information. E.g., this function:

void abort(void) __attribute__((__noreturn__));
void dead_beef(void) __attribute__ ((noreturn));

int *b;

void dead_beef(void) {
  *b=0xdeadbeef;
  abort();
}

has a call to "@llvm.dbg.region.end" only in the unreachable block:

define void @dead_beef() noreturn nounwind  {
entry:
	call void @llvm.dbg.func.start(...)
	call void @llvm.dbg.stoppoint(...)
...
	call void @abort( ) noreturn nounwind 
	unreachable

return:		; No predecessors!
	call void @llvm.dbg.stoppoint(...)
	call void @llvm.dbg.region.end(...)
	ret void
}

The dwarf information emitted is something like:

0x00000084:     TAG_subprogram [5]  
                 AT_name( "dead_beef" )
                 AT_external( 0x01 )
                 AT_prototyped( 0x01 )
                 AT_decl_file( 0x01 )
                 AT_decl_line( 0x08 )

Note that this is *not* the best fix for this problem, but a band-aid for an
gaping wound. This code needs to be changed when we revamp our debugging
information.

llvm-svn: 56628
 2008-09-26 00:28:12 +00:00
Evan Cheng
c8674dcfd0 Prefer movlhps over punpcklqdq, etc. in more cases. 
llvm-svn: 56627
 2008-09-25 23:35:16 +00:00
Dan Gohman
524c506db3 Fix a bug in which address displacements were being added to the 
load from the stub, instead of the result of the load from the stub.

llvm-svn: 56626
 2008-09-25 23:34:02 +00:00
Bill Wendling
8b4fecfb09 Make pointer parameter const for isUsedInBasicBlock. 
llvm-svn: 56625
 2008-09-25 22:42:01 +00:00
Devang Patel
64dd7a2e89 Large mechanical patch. 
s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56622
 2008-09-25 21:00:45 +00:00
Anton Korobeynikov
7367de00cf Reapply 56585:56589 with proper fix for some gcc versions 
llvm-svn: 56621
 2008-09-25 21:00:33 +00:00
Evan Cheng
d190aeb62d With sse3 and when the source is a load or has multiple uses, favors movddup over shuffp*, pshufd, etc. Without sse3 or when the source is from a register, make use of movlhps 
llvm-svn: 56620
 2008-09-25 20:50:48 +00:00
Dale Johannesen
62f64ab4c8 Accept 'inreg' attribute on x86 functions as 
meaning sse_regparm (i.e. float/double values go
in XMM0 instead of ST0).  Update documentation
to reflect reality.

llvm-svn: 56619
 2008-09-25 20:47:45 +00:00
Dan Gohman
f03be3916e Avoid a spurious extra space character when printing empty structs. 
llvm-svn: 56616
 2008-09-25 17:37:20 +00:00
Dan Gohman
9bb92ce6e9 Support for i1 XOR in FastISel. It is actually safe because 
i1 operands are assumed to already by zero-extended.

llvm-svn: 56615
 2008-09-25 17:22:52 +00:00
Dan Gohman
51cd436ad8 Don't print fast-isel debug messages by default. Thanks Chris! 
llvm-svn: 56614
 2008-09-25 17:21:42 +00:00