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Author SHA1 Message Date
Lauro Ramos Venancio
599ddf9a76 Fix fpcmp infinite loop when comparing "29-266" with "29-268". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46455 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 18:23:23 +00:00
Chris Lattner
349c72a35d this test is now compiled into the right thing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46454 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 17:38:46 +00:00
Duncan Sands
095765e26d Unbreak builds with differing object and source 
directories.  Patch by Sam Bishop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 17:38:30 +00:00
Duncan Sands
1f0315462b Make this more likely to be passed byval. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 10:35:11 +00:00
Bill Wendling
200e90c74b 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46449 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 09:15:03 +00:00
Chris Lattner
0818ea8317 Transform calls to memcpy into llvm.memcpy calls, patch by Eli Friedman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46433 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 04:41:43 +00:00
Chris Lattner
2671fc390c reduce duplicate -I flags passed to the compiler, cleaning up the VERBOSE 
output.  Patch contributed by Sam Bishop!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46432 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 04:18:41 +00:00
Nick Lewycky
4189a538e4 Handle some more combinations of extend and icmp. Fixes PR1940. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46431 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 03:48:02 +00:00
Chris Lattner
25feae555d Fix PR1932 by disabling an xform invalid for fdiv. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46429 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 00:58:18 +00:00
Chris Lattner
5ec898399f make handling of overflow and undefined results much more clear. 
Patch by Eli Friedman, thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46428 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 00:36:27 +00:00
Chris Lattner
05bb789430 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46427 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-28 00:32:30 +00:00
Chris Lattner
4d44d7a2dc Always for PACKAGEVERSION to 'mainline' for teh llvm web page. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46425 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 23:43:26 +00:00
Chris Lattner
f32aac3090 Fix PowerPC/./2007-10-18-PtrArithmetic.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46424 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 23:32:17 +00:00
Chris Lattner
15c2351a93 Update this test. Due to dag combiner improvements, we now compile 
f7/f11 to:

_f7:
	eor r0, r0, #2, 2 @ -2147483648
	bx lr
_f11:
	bic r0, r0, #2, 2 @ -2147483648
	bx lr

instead of:

_f7:
	fmsr s0, r0
	fnegs s0, s0
	fmrs r0, s0
	bx lr

_f11:
	fmsr s0, r0
	fabss s0, s0
	fmrs r0, s0
	bx lr



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46423 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 23:26:37 +00:00
Chris Lattner
ee339f4b2a fix a crash on CodeGen/X86/vector-rem.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46422 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 23:21:58 +00:00
Chris Lattner
3992f5231a Add support for frameworks. Patch by Shantonu Sen! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46421 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 22:58:59 +00:00
Owen Anderson
c66a4f912f Reg alloc doesn't really need LiveVariables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46420 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 22:00:00 +00:00
Owen Anderson
24387df207 Fixes for BreakCriticalMachineCodeEdge by Fernando. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46419 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 19:51:03 +00:00
Nick Lewycky
c837abee2f Be more careful modifying the use_list while also iterating through it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46417 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 18:35:00 +00:00
Duncan Sands
d82375c1c4 Revert r46393: readonly/readnone functions are no 
longer allowed to write through byval arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46416 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 18:12:58 +00:00
Chris Lattner
3bd39d4ca8 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46414 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 17:42:27 +00:00
Chris Lattner
f6b935d8e6 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46413 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 07:31:41 +00:00
Chris Lattner
71d07a0dac Use fldz and fld1 for long double constants instead of a constant pool load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 06:19:31 +00:00
Chris Lattner
84cd0e7fa3 make isExactlyValue work for long double. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46410 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 06:19:08 +00:00
Bill Wendling
67fed1c8f2 The CorrelatedExpressions pass is now no more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46409 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 06:13:32 +00:00
Bill Wendling
beefd3d0f8 The CorrelatedExpressionElimination pass is known to be buggy. Remove it. 
This fixes PR1769.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 06:11:41 +00:00
Chris Lattner
553c116a1b For long double constants, print an approximation of their value to the .s file to make it easier to read. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46407 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 06:09:28 +00:00
Chris Lattner
b753065f6d Fold fptrunc(add (fpextend x), (fpextend y)) -> add(x,y), as GCC does. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46406 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 05:29:54 +00:00
Chris Lattner
4d53049c92 Add some notes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46405 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 20:12:07 +00:00
Chris Lattner
ba96fbc164 Remove some code for inferring alignment info from the x86 backend 
now that the dag combiner does it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46404 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 20:07:42 +00:00
Chris Lattner
b8f43875c3 New test to verify that "merging 4 loads into a vec load" continues to work and 
continues to infer alignment info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46403 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 20:06:45 +00:00
Chris Lattner
dc97d4cb2f make this 64-bit safe 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46402 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 19:50:30 +00:00
Chris Lattner
1329cb8d89 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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46401 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 19:45:50 +00:00
Chris Lattner
216f3f6522 remove a useless xfailed test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46400 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 19:35:46 +00:00
Duncan Sands
63b2c2dde7 Invert this test, because it is wrong if we allow 
readonly functions to use byval parameters as local
storage (how much do we want this?).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46399 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 12:33:01 +00:00
Bill Wendling
824a721560 If there's no instructions being emitted on X86 for a function, emit a 
nop. Emit the nop directly for PPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46398 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 09:03:52 +00:00
Bill Wendling
c79348d8dc Need to convert to LLVM code and not C. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46397 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 06:56:08 +00:00
Bill Wendling
cd76af4a62 Rename the .c to .ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46396 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 06:53:40 +00:00
Bill Wendling
f7214bca74 Move testcase to the code gen directory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46395 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 06:53:06 +00:00
Bill Wendling
381802f8e0 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46394 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 06:51:24 +00:00
Duncan Sands
418ab3729c Create an explicit copy for byval parameters even 
when inlining a readonly function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46393 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 06:41:49 +00:00
Bill Wendling
f69d5d7398 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46387 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 01:43:44 +00:00
Devang Patel
15b86db376 Add another testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46385 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 01:21:48 +00:00
Chris Lattner
5eee427594 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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46384 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 01:09:19 +00:00
Chris Lattner
9967c15183 don't bother making x&-1 only to simplify it in dag combine. This commonly occurs expanding i64 ops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46383 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 01:05:42 +00:00
Evan Cheng
6bccafdfae New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46382 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 00:35:43 +00:00
Chris Lattner
50d8e491a2 reduce indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46377 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-25 23:34:24 +00:00
Chris Lattner
0298dbf019 add a testcase for a bug Duncan pointed out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46372 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-25 22:36:24 +00:00
Duncan Sands
255bd2852b Do this more neatly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46369 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-25 22:06:51 +00:00
Chris Lattner
88d480b552 Reorder a field to reduce the size of StackObject. Note that this 
may require a clean rebuild on leopard. :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46360 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-25 17:49:41 +00:00