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36914 Commits

Author SHA1 Message Date
Chris Lattner 23fe6630e3 make this just a bit more strict. 
llvm-svn: 47274
 2008-02-18 17:33:10 +00:00
Duncan Sands 85fab3a3ad Simplify caller updating using a CallSite, as 
requested by Chris.  While there, do the same
for an existing function committed by someone
called "lattner" :)

llvm-svn: 47273
 2008-02-18 17:32:13 +00:00
Chris Lattner 8ed77c41d8 don't bother calling getUnderlyingObject for non-pointers. 
llvm-svn: 47272
 2008-02-18 17:28:21 +00:00
Dan Gohman 02d2bc8d3e Fix a missing space in the description of the find-bugs option. 
llvm-svn: 47271
 2008-02-18 17:15:45 +00:00
Owen Anderson cc01ebbac6 Since we're not checking for the more general AllocationInst first, we need to explicitly check 
that Object is an Argument before casting it to one.

llvm-svn: 47268
 2008-02-18 10:11:00 +00:00
Roman Levenstein 0b2c8858df New helper function getMBBFromIndex() that given an index in any instruction of an MBB returns a pointer the MBB. Reviewed by Evan. 
llvm-svn: 47267
 2008-02-18 09:35:30 +00:00
Owen Anderson 3549553262 Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls 
another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value.  llvm-gcc does not emit this by default.  Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter.  This optimization detects
and optimizes that case.

llvm-svn: 47265
 2008-02-18 09:24:53 +00:00
Owen Anderson a54570d2d2 I got the predicate backwards in my last patch. The comment is correct, the code was not. 
llvm-svn: 47264
 2008-02-18 09:22:21 +00:00
Owen Anderson bdf7ed9495 This check is not correct for mallocs, so exclude them earlier. 
llvm-svn: 47263
 2008-02-18 09:11:02 +00:00
Evan Cheng 8f90724a53 For now, avoid commuting def MI for copy MI's whose source is not killed. That simply trade a live interval for another and because only the non-two-address operands can be folded into loads, may end up pessimising code. 
llvm-svn: 47262
 2008-02-18 08:40:53 +00:00
Chris Lattner 6b39cb907b switch simplifycfg from using vectors for most things to smallvectors, 
this speeds it up 2.3% on eon.

llvm-svn: 47261
 2008-02-18 07:42:56 +00:00
Chris Lattner 024f8c8f09 optimize away stackrestore calls that have no intervening alloca or call. 
llvm-svn: 47258
 2008-02-18 06:12:38 +00:00
Chris Lattner c8ec470b52 upgrade this test. 
llvm-svn: 47257
 2008-02-18 06:11:00 +00:00
Duncan Sands fa4b673eac Clarify that 'sret' only applies to pointers, and 
only applies to the first parameter.

llvm-svn: 47256
 2008-02-18 04:19:38 +00:00
Owen Anderson 6110128ed5 Make the definition of the noalias attribute clearer. 
llvm-svn: 47255
 2008-02-18 04:09:01 +00:00
Owen Anderson c66655e14c Duncan pointed out that we can fast fail here, because the sret parameter of 
a function must be the first parameter.

llvm-svn: 47254
 2008-02-18 04:06:26 +00:00
Owen Anderson 57a98b7f4b Fix a comment, and a bug where we weren't applying the tail call logic in cases that failed the first test. 
llvm-svn: 47253
 2008-02-18 03:52:21 +00:00
Owen Anderson fa2ba5352f Fix bugs that Chris noticed in my last patch. 
llvm-svn: 47252
 2008-02-18 02:31:23 +00:00
Chris Lattner 0e7fd2f1a8 simplify some code, BreakUpSubtract always returns nonnull now. 
llvm-svn: 47251
 2008-02-18 02:18:25 +00:00
Chris Lattner 8432cc662f bitcasts of pointers are always pointers. 
If we see a memcpy of a pointer, make sure to check later
uses of the pointer as well.

llvm-svn: 47250
 2008-02-18 02:11:28 +00:00
Owen Anderson e41efc7a6d Add support for setting parameters to CallSite. 
llvm-svn: 47249
 2008-02-18 00:10:55 +00:00
Owen Anderson c64dfb4317 Add a predicate to Argument to check for the StructRet attribute. 
llvm-svn: 47248
 2008-02-17 23:22:28 +00:00
Owen Anderson 2e3edf193a Teach getModRefInfo that memcpy, memmove, and memset don't "capture" memory addresses. 
Also, noalias arguments are be considered "like" stack allocated ones for this purpose, because
the only way they can be modref'ed is if they escape somewhere in the current function.

llvm-svn: 47247
 2008-02-17 21:29:08 +00:00
Chris Lattner cc22601bc3 Fold (-x + -y) -> -(x+y) which promotes better association, fixing 
the second half of PR2047

llvm-svn: 47244
 2008-02-17 21:03:36 +00:00
Chris Lattner 5f08ec854f fix pasto 
llvm-svn: 47242
 2008-02-17 20:54:40 +00:00
Chris Lattner a70d138457 Split up subtracts into add+negate if they have a reassociable use or operand 
that is also a subtract.  This implements PR2047 and Transforms/Reassociate/subtest2.ll 

llvm-svn: 47241
 2008-02-17 20:51:26 +00:00
Chris Lattner 2de8c2d41f upgrade and simplify this test. 
llvm-svn: 47240
 2008-02-17 20:48:43 +00:00
Chris Lattner 902537cd8d make the logic for breaking up subtracts more explicit, no 
functionality change.

llvm-svn: 47239
 2008-02-17 20:44:51 +00:00
Tanya Lattner f697c03883 Remove llvm-upgrade. 
llvm-svn: 47238
 2008-02-17 20:02:20 +00:00
Chris Lattner 1f6520842c move PR2053 to here. 
llvm-svn: 47237
 2008-02-17 19:43:57 +00:00
Chris Lattner aec0914c80 fix this test. 
llvm-svn: 47232
 2008-02-17 00:15:25 +00:00
Tanya Lattner 087ed9fcad Remove llvm-upgrade 
llvm-svn: 47231
 2008-02-17 00:15:09 +00:00
Tanya Lattner c36fefedf5 Remove llvm-upgrade. 
llvm-svn: 47230
 2008-02-17 00:13:09 +00:00
Chris Lattner 8a67d349fe this test isn't useful since we added @ notation for globals. 
llvm-svn: 47229
 2008-02-17 00:12:03 +00:00
Chris Lattner 0d43732cd0 this line was commented out. 
llvm-svn: 47228
 2008-02-17 00:09:08 +00:00
Tanya Lattner 47f0a20f8f Remove llvm-upgrade and update tests. 
llvm-svn: 47227
 2008-02-16 23:55:46 +00:00
Tanya Lattner 231fe4746b Removing llvm upgrade, so remove tests specific to llvm-upgrade and update the tests that used it. 
llvm-svn: 47225
 2008-02-16 23:27:24 +00:00
Duncan Sands 573b3f89e4 Remove any 'nest' parameter attributes if the function 
is not passed as an argument to a trampoline intrinsic.

llvm-svn: 47220
 2008-02-16 20:56:04 +00:00
Duncan Sands 2efbc7f9e8 Some micro-optimizations. 
llvm-svn: 47219
 2008-02-16 20:53:06 +00:00
Andrew Lenharth fedcf477b5 I cannot find a libgcc function for this builtin. Therefor expanding it to a noop (which is how it use to be treated). If someone who knows the x86 backend better than me could tell me how to get a lock prefix on an instruction, that would be nice to complete x86 support. 
llvm-svn: 47213
 2008-02-16 14:46:26 +00:00
Duncan Sands b289516a71 Teach LegalizeTypes how to expand the operands of 
br_cc.  This fixes 5 "make check" failures.

llvm-svn: 47212
 2008-02-16 10:29:26 +00:00
Duncan Sands 648e5d682b Try to clarify which compilers can be used for the 
build.

llvm-svn: 47211
 2008-02-16 09:47:41 +00:00
Evan Cheng 652e4618e2 Refactor some code; check if commuteInstruction is able to commute the instruction. 
llvm-svn: 47208
 2008-02-16 02:32:17 +00:00
Andrew Lenharth 9b254eed32 llvm.memory.barrier, and impl for x86 and alpha 
llvm-svn: 47204
 2008-02-16 01:24:58 +00:00
Bill Wendling f861fbaae8 Fix typos. 
llvm-svn: 47200
 2008-02-16 01:09:25 +00:00
Dan Gohman 27ae573900 Rename CountMemOperands to ComputeMemOperandsEnd to reflect what 
it actually does. Simplify CountOperands a little by reusing
ComputeMemOperandsEnd. And reword some comments for both.

llvm-svn: 47198
 2008-02-16 00:36:48 +00:00
Dan Gohman 856c01204b Revert 47177, which was incorrect. 
llvm-svn: 47196
 2008-02-16 00:25:40 +00:00
Chris Lattner 8f51fa82c0 upgrade this test, which wasn't testing the right thing since llvm-upgrade came around. 
llvm-svn: 47194
 2008-02-15 23:58:25 +00:00
Chris Lattner e1f41fc68e rename llx -> ll 
llvm-svn: 47192
 2008-02-15 23:51:48 +00:00
Evan Cheng 6edbbe0c25 This test is not interesting. 
llvm-svn: 47189
 2008-02-15 23:06:21 +00:00