70de4cb1cd
Use empty() instead of comparing size() with zero.
...
llvm-svn: 46514
2008-01-29 13:02:09 +00:00
cf8827a282
Fix a typo in a comment.
...
llvm-svn: 46513
2008-01-29 12:43:50 +00:00
929391a19a
Fix 80-col violations.
...
llvm-svn: 46510
2008-01-29 12:09:55 +00:00
b456a15a5b
Remove top-level const qualifiers from casts, avoiding associated
...
compiler warnings.
llvm-svn: 46509
2008-01-29 12:08:20 +00:00
cd170a7017
Fix a typo in a comment.
...
llvm-svn: 46508
2008-01-29 12:07:11 +00:00
242223abd5
Add explicit keywords.
...
llvm-svn: 46506
2008-01-29 11:36:12 +00:00
17819d971e
eliminate additions of 0.0 when they are obviously dead. This has to be careful to
...
avoid turning -0.0 + 0.0 -> -0.0 which is incorrect.
llvm-svn: 46499
2008-01-29 06:52:45 +00:00
05837edae7
Use getPreferredAlignmentLog or getPreferredAlignment
...
to get the alignment of global variables, rather than
using hand-made versions.
llvm-svn: 46495
2008-01-29 06:23:44 +00:00
48d37806e2
Add support for eliminating memcpy's at the end of functions. Also fix some errors I noticed in
...
the handling of eliminating stores to byval arguments.
llvm-svn: 46494
2008-01-29 06:18:36 +00:00
5aa1615add
RegAllocBigBlock doesn't need LiveVariables either.
...
llvm-svn: 46488
2008-01-29 02:32:13 +00:00
ef33767efb
Properly expand extract-element for non-power-of-2 codegen
...
llvm-svn: 46486
2008-01-29 02:24:00 +00:00
2b3bc30420
Handle 'X' constraint in asm's better.
...
llvm-svn: 46485
2008-01-29 02:21:21 +00:00
67fa0521b6
Filter loops that subtract induction variables.
...
These loops are not yet handled.
Fix PR 1912.
llvm-svn: 46484
2008-01-29 02:20:41 +00:00
ceae3bbf4d
Overhaul Cell SPU's addressing mode internals so that there are now
...
only two addressing mode nodes, SPUaform and SPUindirect (vice the
three previous ones, SPUaform, SPUdform and SPUxform). This improves
code somewhat because we now avoid using reg+reg addressing when
it can be avoided. It also simplifies the address selection logic,
which was the main point for doing this.
Also, for various global variables that would be loaded using SPU's
A-form addressing, prefer D-form offs[reg] addressing, keeping the
base in a register if the variable is used more than once.
llvm-svn: 46483
2008-01-29 02:16:57 +00:00
0f54a09163
Simplify the code and fix a typo.
...
llvm-svn: 46458
2008-01-28 20:02:51 +00:00
99929d20e7
Fix fpcmp infinite loop when comparing "29-266" with "29-268".
...
llvm-svn: 46455
2008-01-28 18:23:23 +00:00
96a1b810ec
If the function has no machine instructions, then emit a "nop" so that
...
the function label isn't associated with something it shouldn't be.
llvm-svn: 46449
2008-01-28 09:15:03 +00:00
a8b4a56061
Transform calls to memcpy into llvm.memcpy calls, patch by Eli Friedman.
...
llvm-svn: 46433
2008-01-28 04:41:43 +00:00
8ea81e8ba4
Handle some more combinations of extend and icmp. Fixes PR1940.
...
llvm-svn: 46431
2008-01-28 03:48:02 +00:00
710b441174
Fix PR1932 by disabling an xform invalid for fdiv.
...
llvm-svn: 46429
2008-01-28 00:58:18 +00:00
1b706dd680
Fix PR1938 by forcing the code that uses an undefined value to branch one
...
way or the other. Rewriting the code itself prevents subsequent analysis
passes from making contradictory conclusions about the code that could
cause an infeasible path to be made feasible.
llvm-svn: 46427
2008-01-28 00:32:30 +00:00
2ee91f4300
Fix PowerPC/./2007-10-18-PtrArithmetic.ll
...
llvm-svn: 46424
2008-01-27 23:32:17 +00:00
d0496d0433
fix a crash on CodeGen/X86/vector-rem.ll
...
llvm-svn: 46422
2008-01-27 23:21:58 +00:00
9a8c890c02
Reg alloc doesn't really need LiveVariables.
...
llvm-svn: 46420
2008-01-27 22:00:00 +00:00
efb16f7057
Be more careful modifying the use_list while also iterating through it.
...
llvm-svn: 46417
2008-01-27 18:35:00 +00:00
053c9871cd
Revert r46393: readonly/readnone functions are no
...
longer allowed to write through byval arguments.
llvm-svn: 46416
2008-01-27 18:12:58 +00:00
888560d62c
Implement some dag combines that allow doing fneg/fabs/fcopysign in integer
...
registers if used by a bitconvert or using a bitconvert. This allows us to
avoid constant pool loads and use cheaper integer instructions when the
values come from or end up in integer regs anyway. For example, we now
compile CodeGen/X86/fp-in-intregs.ll to:
_test1:
movl $2147483648, %eax
xorl 4(%esp), %eax
ret
_test2:
movl $1065353216, %eax
orl 4(%esp), %eax
andl $3212836864, %eax
ret
Instead of:
_test1:
movss 4(%esp), %xmm0
xorps LCPI2_0, %xmm0
movd %xmm0, %eax
ret
_test2:
movss 4(%esp), %xmm0
andps LCPI3_0, %xmm0
movss LCPI3_1, %xmm1
andps LCPI3_2, %xmm1
orps %xmm0, %xmm1
movd %xmm1, %eax
ret
bitconverts can happen due to various calling conventions that require
fp values to passed in integer regs in some cases, e.g. when returning
a complex.
llvm-svn: 46414
2008-01-27 17:42:27 +00:00
2e4719ec55
add a note
...
llvm-svn: 46413
2008-01-27 07:31:41 +00:00
d05d2011d0
Use fldz and fld1 for long double constants instead of a constant pool load.
...
llvm-svn: 46411
2008-01-27 06:19:31 +00:00
60361a16f8
The CorrelatedExpressionElimination pass is known to be buggy. Remove it.
...
This fixes PR1769.
llvm-svn: 46408
2008-01-27 06:11:41 +00:00
f1a6c9fe86
For long double constants, print an approximation of their value to the .s file to make it easier to read.
...
llvm-svn: 46407
2008-01-27 06:09:28 +00:00
fa1e7eef30
Fold fptrunc(add (fpextend x), (fpextend y)) -> add(x,y), as GCC does.
...
llvm-svn: 46406
2008-01-27 05:29:54 +00:00
2dd23b9f32
Add some notes.
...
llvm-svn: 46405
2008-01-26 20:12:07 +00:00
250789f1bd
Remove some code for inferring alignment info from the x86 backend
...
now that the dag combiner does it.
llvm-svn: 46404
2008-01-26 20:07:42 +00:00
e30e33af4f
Infer alignment of loads and increase their alignment when we can tell they are
...
from the stack. This allows us to compile stack-align.ll to:
_test:
movsd LCPI1_0, %xmm0
movapd %xmm0, %xmm1
*** andpd 4(%esp), %xmm1
andpd _G, %xmm0
addsd %xmm1, %xmm0
movl 20(%esp), %eax
movsd %xmm0, (%eax)
ret
instead of:
_test:
movsd LCPI1_0, %xmm0
** movsd 4(%esp), %xmm1
** andpd %xmm0, %xmm1
andpd _G, %xmm0
addsd %xmm1, %xmm0
movl 20(%esp), %eax
movsd %xmm0, (%eax)
ret
llvm-svn: 46401
2008-01-26 19:45:50 +00:00
1a17ef02c8
If there's no instructions being emitted on X86 for a function, emit a
...
nop. Emit the nop directly for PPC.
llvm-svn: 46398
2008-01-26 09:03:52 +00:00
5079483957
If there are no machine instructions emitted for a function, then insert
...
a "nop" instruction so that we don't have the function's label associated
with something that it's not supposed to be associated with.
llvm-svn: 46394
2008-01-26 06:51:24 +00:00
c4dc3dc3a2
Create an explicit copy for byval parameters even
...
when inlining a readonly function.
llvm-svn: 46393
2008-01-26 06:41:49 +00:00
0862e3421d
If we have a function like this:
...
void bork() {
int *address = 0;
*address = 0;
}
It's compiled into LLVM code that looks like this:
define void @bork() noreturn nounwind {
entry:
unreachable
}
This is bad on some platforms (like PPC) because it will generate the label for
the function but no body. The label could end up being associated with some
non-code related stuff, like a section. This places a "trap" instruction if the
SimplifyCFG pass removed all code from the function leaving only one
"unreachable" instruction.
llvm-svn: 46387
2008-01-26 01:43:44 +00:00
31e9edce1c
Fix some bugs in SimplifyNodeWithTwoResults where it would call deletenode to
...
delete a node even if it was not dead in some cases. Instead, just add it to
the worklist. Also, make sure to use the CombineTo methods, as it was doing
things that were unsafe: the top level combine loop could touch dangling memory.
This fixes CodeGen/Generic/2008-01-25-dag-combine-mul.ll
llvm-svn: 46384
2008-01-26 01:09:19 +00:00
720d8999c7
don't bother making x&-1 only to simplify it in dag combine. This commonly occurs expanding i64 ops.
...
llvm-svn: 46383
2008-01-26 01:05:42 +00:00
cb3cf546c3
reduce indentation
...
llvm-svn: 46377
2008-01-25 23:34:24 +00:00
f52faf9a64
Do this more neatly.
...
llvm-svn: 46369
2008-01-25 22:06:51 +00:00
fc80996a21
fix long lines.
...
llvm-svn: 46355
2008-01-25 17:24:52 +00:00
919ad97c01
JITEmitter.cpp was trying to sync the icache for function stubs, but
...
was actually passing a completely incorrect size to sys_icache_invalidate.
Instead of having the JITEmitter do this (which doesn't have the correct
size), just make the target sync its own stubs.
llvm-svn: 46354
2008-01-25 16:41:09 +00:00
6af19fd1e2
DeadStoreElimination can treat byval parameters as if there were alloca's for the purpose of removing end-of-function stores.
...
llvm-svn: 46351
2008-01-25 10:10:33 +00:00
2d7a830ff3
Add skeletal code to increase the alignment of loads and stores when
...
we can infer it. This will eventually help stuff, though it doesn't
do much right now because all fixed FI's have an alignment of 1.
llvm-svn: 46349
2008-01-25 07:20:16 +00:00
6068832dbe
move MachineFrameInfo::CreateFixedObject out of line, give MachineFrameInfo
...
a reference to TargetFrameInfo. Rearrange order of fields in StackObject to
save a word.
llvm-svn: 46348
2008-01-25 07:19:06 +00:00
da52d9e093
include alignment and volatility information in -view-*-dags output
...
llvm-svn: 46347
2008-01-25 06:40:45 +00:00
f4523c35cb
optimize fxor like for
...
llvm-svn: 46345
2008-01-25 06:14:17 +00:00
Dan Gohman