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204 Commits

Author SHA1 Message Date
Dan Gohman 9a6fef0a52 Simplify code by using SmallVector's pop_back_val() instead of 
separate back() and pop_back() calls.

llvm-svn: 71089
 2009-05-06 17:22:41 +00:00
Dale Johannesen e4f361212b Fix comment typo. 
llvm-svn: 67307
 2009-03-19 17:23:29 +00:00
Dale Johannesen cecfa6e08d Fix one more place where debug info affected 
codegen (speculative execution).

llvm-svn: 66859
 2009-03-13 01:05:24 +00:00
Dale Johannesen ed6f5a8253 Previous debug info fix to this code wasn't quite 
right; did the wrong thing when there are exactly 11
non-debug instructions, followed by debug info.
Remove a FIXME since it's apparently been fixed along the way.

llvm-svn: 66840
 2009-03-12 23:18:09 +00:00
Dale Johannesen 7f99d22f2f There already was a class to force deterministic 
sorting of ConstantInt's; unreinvent wheel.

llvm-svn: 66824
 2009-03-12 21:01:11 +00:00
Dale Johannesen 578d8bfc3c Another missing check for debug intrinsics. 
llvm-svn: 66800
 2009-03-12 17:42:45 +00:00
Dale Johannesen 9cdb9bb3e5 Allow for switch values bigger than 64 bits. 
llvm-svn: 66751
 2009-03-12 01:20:06 +00:00
Dale Johannesen 5a41b2def5 Fix some nondeterministic behavior when forwarding 
from a switch table.  Multiple table entries that
branch to the same place were being sorted by the
pointer value of the ConstantInt*; changed to sort
by the actual value of the ConstantInt.

llvm-svn: 66749
 2009-03-12 01:00:26 +00:00
Devang Patel 84fceff969 Ignore dbg info, while estimating size of jump through block. 
llvm-svn: 66554
 2009-03-10 18:00:05 +00:00
Dale Johannesen 6e447e08ee Fix another case where debug info interferes with 
an optimization.

llvm-svn: 66288
 2009-03-06 21:08:33 +00:00
Devang Patel 5aed7765b8 While hoisting instruction to speculatively execute simple bb, ignore dbg intrinsics. 
llvm-svn: 66255
 2009-03-06 06:00:17 +00:00
Bill Wendling 7fcd6148f7 Remove accidental check-ins in r65960. :-( 
llvm-svn: 65961
 2009-03-03 19:25:16 +00:00
Bill Wendling a68fc7af63 Use > instead of >=. We want to promote aggregates of 128-bytes. 
llvm-svn: 65960
 2009-03-03 19:18:49 +00:00
Zhou Sheng 264e46e1e9 Ignore dbg info intrinsics when folding conditional branch to 
conditional branch predecessors.

llvm-svn: 65509
 2009-02-26 06:56:37 +00:00
Zhou Sheng 5d9cc1763b Don't block basic block with only SwitchInst to fold into predecessors. 
llvm-svn: 65456
 2009-02-25 15:34:27 +00:00
Devang Patel e288082644 While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite. 
gcc.c-torture/execute/20000605-3.c
gcc.c-torture/execute/20020619-1.c
gcc.c-torture/execute/20030920-1.c
gcc.c-torture/execute/loop-ivopts-1.c

llvm-svn: 65353
 2009-02-24 00:05:16 +00:00
Devang Patel 316705027b If llvm.dbg.region.end is disappearing then remove corresponding llvm.dbg.func.start also. 
llvm-svn: 64278
 2009-02-11 01:29:06 +00:00
Devang Patel 654e47f366 Ignore dbg intrinsic while folding unconditional branch. 
llvm-svn: 64242
 2009-02-10 22:14:17 +00:00
Devang Patel 02f58e1e8d Revert rev. 63876. It is causing llvm-gcc bootstrap failure. 
llvm-svn: 63888
 2009-02-05 21:46:41 +00:00
Devang Patel 5922e26d1a Ignore dbg intrinsics while propagating conditional expression info. 
llvm-svn: 63876
 2009-02-05 19:15:39 +00:00
Devang Patel 086b212277 Ignore dbg intrinsics while folding switch instruction. 
llvm-svn: 63802
 2009-02-05 00:30:42 +00:00
Devang Patel 916fdce16d Ignore dbg intrinsics. 
llvm-svn: 63781
 2009-02-04 21:39:48 +00:00
Devang Patel fd9f635103 While folding vallue comparison terminators ignore dbg intrinsics. 
llvm-svn: 63700
 2009-02-04 01:06:11 +00:00
Devang Patel f10e287c65 Ignore dbg intrinsics while hoisting common code in the two blocks up into the branch block. 
llvm-svn: 63687
 2009-02-04 00:03:08 +00:00
Devang Patel 2032cadd0f Do not let dbg intrinsic block folding of two entry phi node. 
llvm-svn: 63671
 2009-02-03 22:12:02 +00:00
Chris Lattner c59945b4bd another fix for PR3354 
llvm-svn: 62561
 2009-01-20 01:15:41 +00:00
Bill Wendling caf1d22243 Doxygen-ify comments. 
llvm-svn: 62546
 2009-01-19 23:43:56 +00:00
Chris Lattner ea9f1d3c47 Fix a problem exposed by PR3354: simplifycfg was making a potentially 
trapping instruction be executed unconditionally.

llvm-svn: 62541
 2009-01-19 23:03:13 +00:00
Bill Wendling 534d2e0bae Temporarily revert r62487. It's causing this error during a release bootstrap of 
llvm-gcc. Most likely, it's miscompiling one of the "gen*" programs:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.6.0/bin/ -c -g -O2 -mdynamic-no-pic -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -mdynamic-no-pic -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/build -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS   -o build/gencondmd.o build/gencondmd.c
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: excess elements in struct initializer
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: (near initialization for 'insn_conditions[4]')
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected ',' or ';' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:927: error: expected identifier or '(' before ',' token
../../llvm-gcc.src/gcc/config/i386/sse.md:3458: error: expected identifier or '(' before ',' token
...

llvm-svn: 62506
 2009-01-19 08:46:20 +00:00
Chris Lattner f2bb4ea39c Fix PR3016, a bug which can occur do to an invalid assumption: 
we assumed a CFG structure that would be valid when all code in 
the function is reachable, but not all code is necessarily 
reachable.  Do a simple, but horrible, CFG walk to check for this
case.

llvm-svn: 62487
 2009-01-19 02:46:28 +00:00
Chris Lattner e381d7026f reduce indentation by using 'continue', no functionality change. 
llvm-svn: 62477
 2009-01-19 02:07:32 +00:00
Chris Lattner 54f0c61d71 Fix some problems in SpeculativelyExecuteBB. Basically, 
because of dead code, a phi could use the speculated instruction
that was not in "BB2".  Make this check explicit and tighten up 
some other corners.  This fixes PR3292.  No testcase becauase this
depends entirely on visitation order of blocks and requires a 
sequence of 8 passes to repro.

llvm-svn: 62476
 2009-01-19 00:36:37 +00:00
Chris Lattner e1c01e4e2b Make this a bit more explicit about which cases need the 
check.  No functionality change.

llvm-svn: 62474
 2009-01-18 23:22:07 +00:00
Eli Friedman cb61afb546 Add a helper to remove a branch and DCE the condition, and use it 
consistently for deleting branches.  In addition to being slightly 
more readable, this makes SimplifyCFG a bit better 
about cleaning up after itself when it makes conditions unused.

llvm-svn: 61100
 2008-12-16 20:54:32 +00:00
Chris Lattner f50d7f76c6 fix a bug I introduced in simplifycfg handling single entry phi 
nodes. FoldSingleEntryPHINodes deletes the PHI, so there is no
need to delete it afterward.

llvm-svn: 60653
 2008-12-07 07:22:45 +00:00
Chris Lattner dc3f6f2c12 Factor some code into a new FoldSingleEntryPHINodes method. 
llvm-svn: 60501
 2008-12-03 19:44:02 +00:00
Chris Lattner 7eb270ed03 Rename DeleteBlockIfDead to DeleteDeadBlock and make it 
unconditionally delete the block.  All likely clients will
do the checking anyway.

llvm-svn: 60464
 2008-12-03 06:40:52 +00:00
Chris Lattner bcc904a67c Factor some code out of SimplifyCFG, forming a new 
DeleteBlockIfDead method.

llvm-svn: 60463
 2008-12-03 06:37:44 +00:00
Chris Lattner 8e84c129ce delete ErasePossiblyDeadInstructionTree, replacing uses of it with 
RecursivelyDeleteTriviallyDeadInstructions.

llvm-svn: 60196
 2008-11-27 23:25:44 +00:00
Chris Lattner d6204bed3d simplify this code a bit. 
llvm-svn: 60164
 2008-11-27 07:54:38 +00:00
Chris Lattner 0934c0f35b Fix PR2967 by not deleting volatile load/stores that occur before unreachable. 
I don't really see this as being needed, but there is little harm from doing
it.

llvm-svn: 58385
 2008-10-29 17:46:26 +00:00
Devang Patel f963403b58 Nick Lewycky's patch. 
While hosting instruction check PHI node.

llvm-svn: 57025
 2008-10-03 18:57:37 +00:00
Devang Patel 4c758ea3e0 Large mechanical patch. 
s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56622
 2008-09-25 21:00:45 +00:00
Devang Patel 76b22c1420 Try to place hoisted instructions befoe icmp instruction. 
llvm-svn: 56315
 2008-09-18 22:50:42 +00:00
Devang Patel 7f9671ba37 Do not hoist instruction above branch condition. The instruction may use branch condition. 
llvm-svn: 56286
 2008-09-17 18:21:49 +00:00
Dan Gohman 8de6d22392 Use empty() instead of begin() == end(). 
llvm-svn: 54780
 2008-08-14 18:13:49 +00:00
Dan Gohman fa1211f69b Enable first-class aggregates support. 
Remove the GetResultInst instruction. It is still accepted in LLVM assembly
and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove
support for return instructions with multiple values. These are auto-upgraded
to use InsertValueInst instructions.

The IRBuilder still accepts multiple-value returns, and auto-upgrades them
to InsertValueInst instructions.

llvm-svn: 53941
 2008-07-23 00:34:11 +00:00
Owen Anderson 9858691f25 Reapply r53735. My last patch fixed the failures Dan observed. 
llvm-svn: 53761
 2008-07-18 17:49:43 +00:00
Dan Gohman 29c3adaae0 Revert r53735. It broke SPEC 464.h264ref. 
llvm-svn: 53757
 2008-07-18 16:44:49 +00:00
Owen Anderson fd7102037d Use MergeBlockIntoPredecessor to simplify some code. 
llvm-svn: 53735
 2008-07-17 20:00:46 +00:00