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53548 Commits

Author SHA1 Message Date
Chris Lattner 1756673f58 add a comment about why we don't allow inlining indbr. 
llvm-svn: 85724
 2009-11-01 18:16:30 +00:00
Evan Cheng 50bc004b67 Fix tests. 
llvm-svn: 85723
 2009-11-01 18:13:29 +00:00
Chris Lattner 253bc77513 the verifier shouldn't modify the IR. 
llvm-svn: 85722
 2009-11-01 18:11:50 +00:00
Douglas Gregor 291f6145b8 Reverting 85714, 85715, 85716, which are breaking the build 
llvm-svn: 85717
 2009-11-01 16:42:53 +00:00
Dan Gohman 2b12b95d5d Add a function to Passes.h to allow clients to create instances 
of the ScalarEvolution pass without needing to #include ScalarEvolution.h.

llvm-svn: 85716
 2009-11-01 15:28:36 +00:00
Dan Gohman b49c889d53 Don't #include Pass.h from CallGraph.h. 
llvm-svn: 85715
 2009-11-01 15:23:35 +00:00
Dan Gohman 576ac96367 Remove the #include of Pass.h from PassManager.h. This breaks a significant 
#include dependency, as frontends commonly pull in PassManager.h.

llvm-svn: 85714
 2009-11-01 15:20:19 +00:00
Chris Lattner 1a8b80ed5a teach ipsccp and ipconstprop that a blockaddress doesn't 'take the address' of a function 
in a way that should prevent ip constprop.  This allows clang/test/CodeGen/indirect-goto.c
to pass with the new indirect goto lowering.

llvm-svn: 85709
 2009-11-01 06:11:53 +00:00
Chris Lattner a1dc101f66 change llvm::MergeBlockIntoPredecessor to not merge two blocks BB1->BB2 
when BB2 has its address taken.  Since it ends up doing BB2->rauw(BB1),
this can cause the address of the entry block to be taken.  Since it is
generally undesirable to nuke blocks whose address is taken, even when
we can, just unconditionally stop this xform.

llvm-svn: 85708
 2009-11-01 04:57:33 +00:00
Chris Lattner 746139b736 strengthen an assumption: RevectorBlockTo knows that PredBB 
ended in an uncond branch because the pass requires BreakCriticalEdges.

However, BCE doesn't eliminate critical adges from indbrs.

llvm-svn: 85707
 2009-11-01 04:23:20 +00:00
Chris Lattner 274717419c fix an issue where the verifier would reject a function whose entry 
block had its address taken even if the blockaddress was dead.

llvm-svn: 85706
 2009-11-01 04:08:01 +00:00
Chris Lattner 7a8db3a41a if CostMetrics says to never duplicate some code, don't unswitch a loop. 
This prevents unswitching from duplicating indbr's.

llvm-svn: 85705
 2009-11-01 03:42:55 +00:00
Chris Lattner 54a4b84012 constant fold indirectbr(blockaddress(%bb)) -> br label %bb. 
llvm-svn: 85704
 2009-11-01 03:40:38 +00:00
Chris Lattner 50ba5c3dc2 improve x86 codegen support for blockaddress. We now compile 
the testcase into:

_test1:                                                     ## @test1
## BB#0:                                                    ## %entry
	leaq	L_test1_bb6(%rip), %rax
	jmpq	*%rax
L_test1_bb:                                                 ## Address Taken
LBB1_1:                                                     ## %bb
	movb	$1, %al
	ret
L_test1_bb6:                                                ## Address Taken
LBB1_2:                                                     ## %bb6
	movb	$2, %al
	ret

Note, it is very very strange that BlockAddressSDNode doesn't carry 
around TargetFlags.  Dan, please fix this.

llvm-svn: 85703
 2009-11-01 03:25:03 +00:00
Chris Lattner 4578f8ea07 pull check for return inst out of loop, never inline a callee that contains 
an indirectbr.

llvm-svn: 85702
 2009-11-01 03:07:53 +00:00
Chris Lattner c559a9f686 Fix BlockAddress::replaceUsesOfWithOnConstant to correctly 
maintain the block use count in SubclassData.

llvm-svn: 85701
 2009-11-01 03:03:03 +00:00
Chris Lattner 140a754ab2 implement linker support for BlockAddress. 
llvm-svn: 85700
 2009-11-01 02:46:39 +00:00
Chris Lattner aa99c94e2a Revert 85678/85680. The decision is to stay with the current form of 
indirectbr, thus we don't need "blockaddr(@func, null)".  Eliminate it
for simplicity.

llvm-svn: 85699
 2009-11-01 01:27:45 +00:00
Evan Cheng 6f29ad9170 Use cbz and cbnz instructions. 
llvm-svn: 85698
 2009-10-31 23:46:45 +00:00
Jim Grosbach 5cba8de2c8 vml[as].f32 cause stalls in following advanced SIMD instructions. Avoid using 
them for scalar floating point operations for now.

llvm-svn: 85697
 2009-10-31 22:57:36 +00:00
Jim Grosbach 403202aef1 Consolidate test files 
llvm-svn: 85696
 2009-10-31 22:20:56 +00:00
Jim Grosbach c79fb530d4 Change to use FileCheck 
llvm-svn: 85695
 2009-10-31 22:16:14 +00:00
Jim Grosbach 69f364babc Make tests more explicit about which instructions are expected. 
llvm-svn: 85694
 2009-10-31 22:14:17 +00:00
Jim Grosbach 259c37cc55 Grammar tweak to comments 
llvm-svn: 85693
 2009-10-31 22:12:44 +00:00
Chris Lattner a546dcf418 Make sure PRE doesn't split crit edges from indirectbr. 
llvm-svn: 85692
 2009-10-31 22:11:15 +00:00
Jim Grosbach 2c3e618a06 Update test to be more explicit about what instruction sequences are expected for each operation. 
llvm-svn: 85691
 2009-10-31 22:10:38 +00:00
Chris Lattner c872b09676 llvm::SplitEdge should refuse to split an edge from an indirectbr. 
Fix CodeGenPrepare to not try to split edges from indirectbr.

llvm-svn: 85690
 2009-10-31 22:04:43 +00:00
Jim Grosbach 0de95af62d Update test to be more explicit about what instruction sequences are expected for each operation. 
llvm-svn: 85689
 2009-10-31 21:52:58 +00:00
Chris Lattner ba364b0a9a update the comment above llvm::SplitCriticalEdge, and make 
it abort on IndirectBrInst as describe in the comment.

llvm-svn: 85688
 2009-10-31 21:51:10 +00:00
Jim Grosbach 8fe6fd702d Expand 64-bit logical shift right inline 
llvm-svn: 85687
 2009-10-31 21:42:19 +00:00
Jim Grosbach 624fcb286e Expand 64-bit arithmetic shift right inline 
llvm-svn: 85685
 2009-10-31 21:00:56 +00:00
Dan Gohman ae6bb61594 Fix a missing newline in the dwarf output code. 
llvm-svn: 85684
 2009-10-31 20:59:09 +00:00
Dan Gohman 34341e69c4 Make -print-machineinstrs more readable. 
- Be consistent when referring to MachineBasicBlocks: BB#0.
 - Be consistent when referring to virtual registers: %reg1024.
 - Be consistent when referring to unknown physical registers: %physreg10.
 - Be consistent when referring to known physical registers: %RAX
 - Be consistent when referring to register 0: %reg0
 - Be consistent when printing alignments: align=16
 - Print jump table contents.
 - Don't print host addresses, in general.
 - and various other cleanups.

llvm-svn: 85682
 2009-10-31 20:19:03 +00:00
Dan Gohman 18dc1c5c9e Factor out more code into addCommonCodeGenPasses. The JIT wasn't 
previously running CodePlacementOpt. Also print headers before
each dump in -print-machineinstrs mode, so that it's clear which
dump is which.

llvm-svn: 85681
 2009-10-31 20:17:39 +00:00
Chris Lattner 3c89c53f35 adjust a couple xforms to work with null bb's in BlockAddress. 
llvm-svn: 85680
 2009-10-31 20:13:24 +00:00
Chris Lattner b2c0e243c5 Make blockaddress(@func, null) be valid, and make 'deleting a basic 
block with a blockaddress still referring to it' replace the invalid 
blockaddress with a new blockaddress(@func, null) instead of a 
inttoptr(1).

This changes the bitcode encoding format, and still needs codegen 
support (this should produce a non-zero value, referring to the entry
block of the function would also be quite reasonable).

llvm-svn: 85678
 2009-10-31 20:08:37 +00:00
Benjamin Kramer 6ef6fe1c31 Force triple; darwin's ASM syntax differs from linux's. 
llvm-svn: 85676
 2009-10-31 19:54:06 +00:00
Jim Grosbach 5d994048dd Expand 64 bit left shift inline rather than using the libcall. For now, this 
is unconditional. Making it still use the libcall when optimizing for size
would be a good adjustment.

llvm-svn: 85675
 2009-10-31 19:38:01 +00:00
Benjamin Kramer 7e06083a3a Add missing colons for FileCheck. 
llvm-svn: 85674
 2009-10-31 19:22:24 +00:00
Jim Grosbach bf1cb1343f Convert to FileCheck 
llvm-svn: 85673
 2009-10-31 19:06:53 +00:00
Jim Grosbach 7a949d8b05 The universal SDKROOT should only be assigned when hosted. Otherwise the 
SDKROOT can refer to the target when we're building for the host.

llvm-svn: 85672
 2009-10-31 18:00:10 +00:00
Chris Lattner a742b8f94f add a comment. 
llvm-svn: 85671
 2009-10-31 17:48:31 +00:00
Dan Gohman 2d02ff8cbb Revert r85667. LoopUnroll currently can't call utility functions which 
auto-update the DominatorTree because it doesn't keep the DominatorTree
current while it works.

llvm-svn: 85670
 2009-10-31 17:33:01 +00:00
Dan Gohman 144694bcb7 Remove redundant code. 
llvm-svn: 85668
 2009-10-31 16:16:41 +00:00
Dan Gohman 041e2dbad1 Merge the enhancements from LoopUnroll's FoldBlockIntoPredecessor into 
MergeBlockIntoPredecessor. This makes SimplifyCFG slightly more aggressive,
and makes it unnecessary for LoopUnroll to have its own copy of this code.

llvm-svn: 85667
 2009-10-31 16:08:00 +00:00
Dan Gohman 880c92ac1c Rename forgetLoopBackedgeTakenCount to forgetLoop, because it 
clears out more information than just the stored backedge taken count.

llvm-svn: 85664
 2009-10-31 15:04:55 +00:00
Dan Gohman 969e83a4ff Replace LoopUnrollPass.cpp's custom code-size estimation code using 
the new common CodeMetrics code.

llvm-svn: 85663
 2009-10-31 14:54:17 +00:00
Dan Gohman fa8969f70e Simplify this code. 
llvm-svn: 85662
 2009-10-31 14:46:50 +00:00
Dan Gohman af94015c18 Remove an unnecessary #include. 
llvm-svn: 85661
 2009-10-31 14:39:43 +00:00
Dan Gohman f35b6640f6 Update CMakeLists for recent renames. 
llvm-svn: 85660
 2009-10-31 14:38:25 +00:00