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314 Commits

Author SHA1 Message Date
Chris Lattner
5a09690446 Implement a signficant optimization for inline asm: 
When choosing between constraints with multiple options,
like "ir", test to see if we can use the 'i' constraint and
go with that if possible.  This produces more optimal ASM in
all cases (sparing a register and an instruction to load it),
and fixes inline asm like this:

void test () {
  asm volatile (" %c0 %1 " : : "imr" (42), "imr"(14));
}

Previously we would dump "42" into a memory location (which
is ok for the 'm' constraint) which would cause a problem
because the 'c' modifier is not valid on memory operands.

Isn't it great how inline asm turns 'missed optimization'
into 'compile failed'??

Incidentally, this was the todo in 
PowerPC/2007-04-24-InlineAsm-I-Modifier.ll

Please do NOT pull this into Tak.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50315 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 00:37:18 +00:00
Evan Cheng
1e8586d175 New test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50229 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 20:01:58 +00:00
Evan Cheng
8608f2eff2 64-bit atomic operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49949 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 02:30:38 +00:00
Evan Cheng
9c1e06e187 After reading memory that's already freed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49810 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 20:24:25 +00:00
Dale Johannesen
0a6ee6d131 Remove -unwind-tables-optional everywhere, since 
this is now the default.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49667 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-14 17:56:54 +00:00
Evan Cheng
172b70c62a A copy instruction may use a register multiple times on some targets. Change them all. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49491 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-10 18:38:47 +00:00
Dale Johannesen
c8abfdec84 Rename -disable-required-unwind-tables to -unwind-tables-optional. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49391 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 18:10:08 +00:00
Dale Johannesen
a25e5787bc Missed one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49365 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 00:14:59 +00:00
Dale Johannesen
235f7fb474 Add -disable-required-unwind-tables to tests 
that need it (usually, grepping for some string
found in unwind info)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49364 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 00:14:17 +00:00
Dale Johannesen
1d3863fdbc Mark functions in some tests as 'nounwind'. Generating 
EH info for these functions causes the tests to fail for
random reasons (e.g. looking for 'or' or counting lines
with asm-printer; labels count as lines.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49003 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-31 23:20:09 +00:00
Evan Cheng
0c28432852 One more coalescer fix wrt deadness propagation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48837 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-26 20:15:49 +00:00
Tanya Lattner
6f729d601c Byebye llvm-upgrade! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48762 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 04:26:08 +00:00
Evan Cheng
a2fb634def lastRegisterUse() should ignore identity copies. Those will be erased. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 02:02:19 +00:00
Bill Wendling
3e98c30cf5 Use the bit size of the operand instead of the hard-coded 32 to generate the 
mask.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48750 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 23:16:37 +00:00
Bill Wendling
d59c517a83 New testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48697 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 22:27:01 +00:00
Dan Gohman
7925ed05d0 Add support for multiple return values for the PPC target by 
converting call result lowering to use the CallingConvLowering
infastructure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48552 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 21:39:28 +00:00
Evan Cheng
94202018c5 Fix live variables issues: 
1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue.
2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register:
   = EAX, AX<imp-use,kill>
...
AX =
In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 00:52:20 +00:00
Dale Johannesen
cf49819877 Make conversions of i8/i16 to ppcf128 work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48493 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 17:28:38 +00:00
Evan Cheng
3c88d742d4 Rewrite code that propagate isDead information after a dead copy is coalesced. This remove some ugly spaghetti code and fixed a number of subtle bugs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48490 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 08:26:47 +00:00
Dan Gohman
002e5d0a17 More APInt-ification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48344 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 22:13:53 +00:00
Dale Johannesen
01c18a7275 The feature this is testing did not work in the general case, 
and has been removed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48232 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 17:48:26 +00:00
Evan Cheng
9a8094159d Learn how to xfail a test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48219 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 07:51:31 +00:00
Evan Cheng
de13acf862 XFAIL due to Dale's change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48216 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 07:15:44 +00:00
Dan Gohman
034f60ed24 Generalize ExpandIntToFP to handle the case where the operand is legal 
and it's the result that requires expansion. This code is a little confusing
because the TargetLoweringInfo tables for [US]INT_TO_FP use the operand type
(the integer type) rather than the result type. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48206 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 01:59:03 +00:00
Dan Gohman
a2e9485e34 Implement more support for fp-to-i128 and i128-to-fp conversions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48189 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 23:03:31 +00:00
Bill Wendling
2b65c4e7cc Update llc flags for PPC register scavenger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48187 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 22:59:08 +00:00
Chris Lattner
8aca4b13a8 upgrade this test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 00:32:10 +00:00
Dan Gohman
a2fcff4d97 Add support for calls with i128 return values on ppc64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48041 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-08 00:19:12 +00:00
Dan Gohman
9ed06db5c8 Add support for lowering 128-bit shifts on ppc64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48029 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 20:36:53 +00:00
Bill Wendling
65bc122045 Add testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48005 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 23:34:22 +00:00
Evan Cheng
ecb2a8b9bc Fix a coalescer bug wrt how dead copy interval is shortened. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47966 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 22:09:42 +00:00
Bill Wendling
3fab77eb25 Use -enable-ppc-regscavenger flag for these checks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47916 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 23:16:26 +00:00
Bill Wendling
7194aaf738 This is the initial check-in for adding register scavenging to PPC. (Currently, 
PPC-64 doesn't work.) This also lowers the spilling of the CR registers so that
it uses a register other than the default R0 register (the scavenger scrounges
for one). A significant part of this patch fixes how kill information is
handled.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47863 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-03 22:19:16 +00:00
Chris Lattner
3be4893dce Evan implemented this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47827 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-02 17:56:29 +00:00
Dale Johannesen
0154e47ed0 New test for misaligned Altivec laod/store. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47698 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 23:14:50 +00:00
Dan Gohman
ec59b95a19 Don't hard-code the mask size to be 32, which is incorrect on ppc64 
and was causing aborts with the new APInt changes. This may also be
fixing an obscure ppc64 bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47692 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 21:12:32 +00:00
Bill Wendling
cc4831849e Upgrade testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47644 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:22:40 +00:00
Gabor Greif
72c8f0d156 Really feed llvm-as with the testcase, do not let it read from stdin. This fixes the hangs seen on solaris10. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47604 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 13:37:13 +00:00
Tanya Lattner
cfab3da46e Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47325 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 08:07:33 +00:00
Nate Begeman
5e1dd5597e Add testcase for recent legalizer change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47049 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 06:48:40 +00:00
Evan Cheng
431bfcbe37 Determine whether a spill kills the register it's spilling before insertion rather than trying to undo the kill marker afterwards. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 08:30:52 +00:00
Evan Cheng
bb4151bd1f If a vr is already marked alive in a bb, then it has PHI uses that are visited earlier, then it is not killed in the def block (i.e. not dead). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46763 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 20:04:18 +00:00
Chris Lattner
7cf9abff23 Add target triples to these so they don't fail on linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:26:07 +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
Dale Johannesen
5c5eb80255 Implement flt_rounds for PowerPC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46174 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-18 19:55:37 +00:00
Chris Lattner
a7a02fb828 Fix a latent bug exposed by my truncstore patch. We compiled stfiwx-2.ll to: 
_test:
	fctiwz f0, f1
	stfiwx f0, 0, r4
	blr 

instead of:

_test:
	fctiwz f0, f1
	stfd f0, -8(r1)
	nop
	nop
	lwz r2, -4(r1)
	stb r2, 0(r4)
	blr 

The former is not correct (stores 4 bytes, not 1).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46161 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-18 16:54:56 +00:00
Chris Lattner
b8b92216f1 add testcase for regression 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46073 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-16 18:03:52 +00:00
Chris Lattner
a4040e9a9f remove darwin/i386 t-t 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45743 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 06:52:51 +00:00