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* New helper function getMBBFromIndex() that given an index in any instruction ↵Roman Levenstein2008-02-182-16/+30
| | | | | | of an MBB returns a pointer the MBB. Reviewed by Evan. llvm-svn: 47267
* Add support to GVN for performing sret return slot optimization. This means ↵Owen Anderson2008-02-182-2/+94
| | | | | | | | | | | 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
* I got the predicate backwards in my last patch. The comment is correct, the ↵Owen Anderson2008-02-181-1/+1
| | | | | | code was not. llvm-svn: 47264
* This check is not correct for mallocs, so exclude them earlier.Owen Anderson2008-02-181-2/+2
| | | | llvm-svn: 47263
* For now, avoid commuting def MI for copy MI's whose source is not killed. ↵Evan Cheng2008-02-181-0/+7
| | | | | | 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
* switch simplifycfg from using vectors for most things to smallvectors,Chris Lattner2008-02-181-14/+12
| | | | | | this speeds it up 2.3% on eon. llvm-svn: 47261
* More bitfield improvements.Anders Carlsson2008-02-181-19/+53
| | | | llvm-svn: 47260
* Fix bug where we would report the wrong value for __alignof__ with an expr ↵Anders Carlsson2008-02-181-5/+6
| | | | | | that is not a type. llvm-svn: 47259
* optimize away stackrestore calls that have no intervening alloca or call.Chris Lattner2008-02-182-13/+58
| | | | llvm-svn: 47258
* upgrade this test.Chris Lattner2008-02-181-11/+11
| | | | llvm-svn: 47257
* Clarify that 'sret' only applies to pointers, andDuncan Sands2008-02-181-2/+3
| | | | | | only applies to the first parameter. llvm-svn: 47256
* Make the definition of the noalias attribute clearer.Owen Anderson2008-02-181-2/+3
| | | | llvm-svn: 47255
* Duncan pointed out that we can fast fail here, because the sret parameter ofOwen Anderson2008-02-181-1/+2
| | | | | | a function must be the first parameter. llvm-svn: 47254
* Fix a comment, and a bug where we weren't applying the tail call logic in ↵Owen Anderson2008-02-181-6/+8
| | | | | | cases that failed the first test. llvm-svn: 47253
* Fix bugs that Chris noticed in my last patch.Owen Anderson2008-02-181-9/+17
| | | | llvm-svn: 47252
* simplify some code, BreakUpSubtract always returns nonnull now.Chris Lattner2008-02-181-4/+2
| | | | llvm-svn: 47251
* bitcasts of pointers are always pointers.Chris Lattner2008-02-181-5/+2
| | | | | | | If we see a memcpy of a pointer, make sure to check later uses of the pointer as well. llvm-svn: 47250
* Add support for setting parameters to CallSite.Owen Anderson2008-02-181-0/+9
| | | | llvm-svn: 47249
* Add a predicate to Argument to check for the StructRet attribute.Owen Anderson2008-02-172-0/+11
| | | | llvm-svn: 47248
* Teach getModRefInfo that memcpy, memmove, and memset don't "capture" memory ↵Owen Anderson2008-02-171-3/+13
| | | | | | | | | 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
* Turn handling of parameter attributes back on, fixing the ObjC breakageNate Begeman2008-02-172-2/+3
| | | | llvm-svn: 47246
* Revert this temporarily, it's breaking objc :/Nate Begeman2008-02-171-2/+2
| | | | llvm-svn: 47245
* Fold (-x + -y) -> -(x+y) which promotes better association, fixingChris Lattner2008-02-172-2/+22
| | | | | | the second half of PR2047 llvm-svn: 47244
* Handle parameter attributesNate Begeman2008-02-171-3/+3
| | | | llvm-svn: 47243
* fix pastoChris Lattner2008-02-171-1/+1
| | | | llvm-svn: 47242
* Split up subtracts into add+negate if they have a reassociable use or operandChris Lattner2008-02-172-5/+21
| | | | | | that is also a subtract. This implements PR2047 and Transforms/Reassociate/subtest2.ll llvm-svn: 47241
* upgrade and simplify this test.Chris Lattner2008-02-171-6/+7
| | | | llvm-svn: 47240
* make the logic for breaking up subtracts more explicit, no Chris Lattner2008-02-171-9/+22
| | | | | | functionality change. llvm-svn: 47239
* Remove llvm-upgrade.Tanya Lattner2008-02-1750-906/+906
| | | | llvm-svn: 47238
* move PR2053 to here.Chris Lattner2008-02-171-0/+12
| | | | llvm-svn: 47237
* Fix PR2042. One remaining issue: we don't currently diagnoseChris Lattner2008-02-174-4/+11
| | | | | | | | | int foobar(int); int foobar() {} which requires ifdef'ing out a testcase in predefined-function.c. llvm-svn: 47236
* Change alignment for doubles to 32 bits which is what X86 has.Anders Carlsson2008-02-171-1/+2
| | | | llvm-svn: 47234
* Implemnt isVariablyModifiedType correctly.Eli Friedman2008-02-172-6/+25
| | | | llvm-svn: 47233
* fix this test.Chris Lattner2008-02-171-1/+1
| | | | llvm-svn: 47232
* Remove llvm-upgradeTanya Lattner2008-02-171-10/+6
| | | | llvm-svn: 47231
* Remove llvm-upgrade.Tanya Lattner2008-02-172-17/+21
| | | | llvm-svn: 47230
* this test isn't useful since we added @ notation for globals.Chris Lattner2008-02-171-21/+0
| | | | llvm-svn: 47229
* this line was commented out.Chris Lattner2008-02-171-1/+1
| | | | llvm-svn: 47228
* Remove llvm-upgrade and update tests.Tanya Lattner2008-02-162-31/+8
| | | | llvm-svn: 47227
* implement codegen support for aggregates casted to void.Chris Lattner2008-02-162-5/+18
| | | | llvm-svn: 47226
* Removing llvm upgrade, so remove tests specific to llvm-upgrade and update ↵Tanya Lattner2008-02-1627-13270/+13054
| | | | | | the tests that used it. llvm-svn: 47225
* A couple of msvc compile fixes from the ml; I haven't tested with msvc, Eli Friedman2008-02-162-2/+3
| | | | | | but the fixes are reasonable. llvm-svn: 47224
* Implement extern block var.Lauro Ramos Venancio2008-02-163-4/+16
| | | | llvm-svn: 47223
* Remove any 'nest' parameter attributes if the functionDuncan Sands2008-02-162-10/+109
| | | | | | is not passed as an argument to a trampoline intrinsic. llvm-svn: 47220
* Some micro-optimizations.Duncan Sands2008-02-161-4/+5
| | | | llvm-svn: 47219
* Add more testsAnders Carlsson2008-02-161-8/+35
| | | | llvm-svn: 47217
* Better handling of the aligned attribute.Anders Carlsson2008-02-164-18/+57
| | | | llvm-svn: 47216
* I cannot find a libgcc function for this builtin. Therefor expanding it to ↵Andrew Lenharth2008-02-169-9/+33
| | | | | | 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
* Teach LegalizeTypes how to expand the operands ofDuncan Sands2008-02-162-4/+25
| | | | | | br_cc. This fixes 5 "make check" failures. llvm-svn: 47212
* Try to clarify which compilers can be used for theDuncan Sands2008-02-161-6/+7
| | | | | | build. llvm-svn: 47211
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