001aba76fd
Updates to gc intrinsics, contributed by Tobias Nurmiranta
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llvm-svn: 15096
2004-07-22 05:50:01 +00:00
120187935d
Use reverse iterators when updating the vector, since scanning from
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the end will reduce erase() runtimes.
llvm-svn: 15093
2004-07-22 02:16:53 +00:00
6ff6021712
That funny 2-address lowering pass can also cause multiple definitions,
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fortunately, they are easy to handle if we know about them. This patch fixes
some serious pessimization of code produced by the linscan register allocator.
llvm-svn: 15092
2004-07-22 00:04:14 +00:00
adbbc62f82
Minor cleanups
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llvm-svn: 15091
2004-07-21 23:17:57 +00:00
fac8452acf
Fix cases where we generated horrible code like this:
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mov %EDI, 12
add %EDI, %ECX
mov %ECX, 12
add %ECX, %EDX
mov %EDX, 12
add %EDX, %ESI
instead (really!) generate this:
add %ECX, 12
add %EDX, 12
add %ESI, 12
llvm-svn: 15090
2004-07-21 21:28:26 +00:00
902dcf0729
These files don't need to include <iostream> since they include "Support/Debug.h".
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llvm-svn: 15089
2004-07-21 20:50:33 +00:00
dbd14bc3e5
* Add the lost fix to define the second reg of a 2-reg representation of longs
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* Fix opcode RLWNM -> RLWINM since it uses an immediate const shift value
llvm-svn: 15087
2004-07-21 20:30:18 +00:00
87e07f8596
* Speed up canUseAsImmediateForOpcode() by comparing Operand before
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dyn_cast<>ing and checking Constant's value
* Convert tabs to spaces
llvm-svn: 15086
2004-07-21 20:22:06 +00:00
d8f5e2ccac
* Further cleanup.
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* Test for whether bits are shifted out during the optzn.
If so, the fold is illegal, though it can be handled explicitly for setne/seteq
This fixes the miscompilation of 254.gap last night, which was a latent bug
exposed by other optimizer improvements.
llvm-svn: 15085
2004-07-21 20:14:10 +00:00
8d75aa4475
* Fix printing of signed immediate values (Nate Begeman)
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* Fix printing of `zeroinitializer'
* Fix printing of `linkonce' globals, complete with stubs
llvm-svn: 15084
2004-07-21 20:11:11 +00:00
072af37088
* Fix printing of signed immediate values
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* Generation of opcodes that take 16 bit immediates
* Rewrote multiply to be correct for 64 bit values
* Rewrote all the long handling to be correct for PowerPC
* Fix visitSelectInst() to define the upper register of the pair of regs
representing a long value
Patch contributed by Nate Begeman.
llvm-svn: 15083
2004-07-21 20:09:08 +00:00
1638de4499
Make cast-cast code a bit more defensive
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"simplify" a bit of code for comparison/and folding
llvm-svn: 15082
2004-07-21 19:50:44 +00:00
455622577a
Use addSImm() instead of addImm() for stack offsets, which may be negative.
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llvm-svn: 15081
2004-07-21 19:36:57 +00:00
c74c7d1101
Fix analysis name.
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llvm-svn: 15078
2004-07-21 17:23:44 +00:00
984bfdc702
Add SUBI instruction
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llvm-svn: 15077
2004-07-21 15:53:04 +00:00
701071a144
Clear spilled list at once. Remove unused vector.
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llvm-svn: 15073
2004-07-21 12:00:10 +00:00
a3efc03731
Change std::list into a std::vector for IntervalSets. This reduces
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compile time for 176.gcc from 5.6 secs to 4.7 secs.
llvm-svn: 15072
2004-07-21 09:46:55 +00:00
fbc436bbce
Improve file comment.
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llvm-svn: 15069
2004-07-21 08:28:39 +00:00
d524e5bdf2
Add Iterative scan register allocator.
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llvm-svn: 15068
2004-07-21 08:24:35 +00:00
c03ccc225b
Linearscan is no longer experimental.
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llvm-svn: 15067
2004-07-21 08:18:50 +00:00
abc4f4523f
Add capability to remove aliasing aliassets from an AST
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llvm-svn: 15066
2004-07-21 07:04:26 +00:00
2cfaef23e4
Make the AST interface a bit richer by returning whether an insertion caused
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an insertion or not (because the pointer set already existed).
llvm-svn: 15064
2004-07-21 05:18:04 +00:00
4fbad968f8
Remove special casing of pointers and treat them generically as integers of
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the appopriate size. This gives us the ability to eliminate int -> ptr -> int
llvm-svn: 15063
2004-07-21 04:27:24 +00:00
fdcf624939
Do not ignore casts unless they are pointer-pointer casts. This caused us
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to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.
llvm-svn: 15062
2004-07-21 03:56:54 +00:00
84a69f1494
Solaris hack for isinf()
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llvm-svn: 15058
2004-07-21 03:32:51 +00:00
1dde3fa94f
Emit NaNs and INFs bit-identically to the bytecode file, if the system has
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printf("%a") support.
Patch contributed by Bill Wendling.
llvm-svn: 15056
2004-07-21 03:15:26 +00:00
0810ebf56a
Add platform-independent wrapper function for isinf().
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Patch contributed by Bill Wendling.
llvm-svn: 15050
2004-07-21 03:13:50 +00:00
75f3291ef3
Shorts are aligned to 2 bytes, bools to 1 byte (in structs).
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llvm-svn: 15048
2004-07-20 20:59:57 +00:00
8e36261aa8
Treat external variables similarly to those with weak linkage: load indirect.
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llvm-svn: 15047
2004-07-20 20:43:05 +00:00
4aab086eda
Differentiate between global and weak symbol loads
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llvm-svn: 15037
2004-07-20 15:52:25 +00:00
684ef6ca20
* Differentiate between global and weak symbol loads
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* Fix functions that take more than 32 bytes of args
* Alignment of doubles in structs is 4 bytes, not 8
* Fix passing long args: rN = hi, rN+1 = lo
* Rewrite signed divide
* Rewrite Intrinsic::returnaddress
Patch courtesy of Nate Begeman.
llvm-svn: 15036
2004-07-20 15:51:37 +00:00
42666aed5e
Differentiate between global and weak symbol loads
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llvm-svn: 15035
2004-07-20 15:45:27 +00:00
dff882a230
Double alignment in structs is 4 bytes, not 8. Patch by Nate Begeman.
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llvm-svn: 15034
2004-07-20 15:43:25 +00:00
7eb2b1892b
Add function to clear all virtual->physical mappings but not assigned
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stack slots. This is in preparation for the iterative linear scan.
llvm-svn: 15032
2004-07-20 13:28:17 +00:00
f616d8328c
Remove unneeded functor. LiveInterval has a < operator.
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llvm-svn: 15031
2004-07-20 10:20:03 +00:00
45b50d14c9
Fix a serious code pessimization problem. If an inlined function has a single
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return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.
llvm-svn: 15030
2004-07-20 05:45:24 +00:00
11ffd59e37
Implement Transforms/InstCombine/IntPtrCast.ll
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llvm-svn: 15029
2004-07-20 05:21:00 +00:00
ec67df0ed1
Ignore instructions that are in trivially dead functions. This allows us
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to constify 14 globals instead of 4 in a trivial C++ testcase.
llvm-svn: 15027
2004-07-20 03:58:07 +00:00
e036ff8b32
Fix stack frame layout in prologue/epilogue. Patch courtesy of Nate Begeman.
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llvm-svn: 15026
2004-07-20 02:23:09 +00:00
44d0b9502a
Implement InstCombine/GEPIdxCanon.ll
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llvm-svn: 15024
2004-07-20 01:48:15 +00:00
5823ac1c21
Implement SimplifyCFG/BrUnwind.ll
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llvm-svn: 15022
2004-07-20 01:17:38 +00:00
5e744fa1a3
Move handing of GlobalValues from getReg() to copyConstantToRegister(), this
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will avoid extra register-to-register copies. Thanks to Chris for the idea.
llvm-svn: 15019
2004-07-20 00:59:38 +00:00
4e2dbc6b4a
Rewrite cast->cast elimination code completely based on the information we
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actually care about. Someday when the cast instruction is gone, we can do
better here, but this will do for now. This implements
instcombine/cast.ll:test17/18 as well.
llvm-svn: 15018
2004-07-20 00:59:32 +00:00
22802cc6cd
* Fn args passed in registers are now recorded as used by the call instruction
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`-> asm printer updated to not print out those registers with the call instr
All of Shootout tests now work. Great thanks to Nate Begeman for the patch!
llvm-svn: 15015
2004-07-20 00:42:19 +00:00
818a9dc317
* cFP class split into cFP32 and cFP64
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* Fn args passed in registers are now recorded as used by the call instruction
`-> asm printer updated to not print out those registers with the call instr
* Stack frame layout in prolog/epilog fixed, spills and vararg fns now work
* float/double to signed int codegen now correct
* various single precision float codegen bugs fixed
* const integer multiply codegen fixed
* select and setcc blocks inserted into the correct place in machine CFG
* load of integer constant code optimized
All of Shootout tests now work. Great thanks to Nate Begeman for the patch!
llvm-svn: 15014
2004-07-20 00:41:46 +00:00
f8cf35855a
While I'm at it, don't break codegen of mul by 3,5,9.
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llvm-svn: 15013
2004-07-19 23:50:57 +00:00
7c06d44f42
Generate better code for multiplies by negative constants like -4, -1, -9, etc.
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llvm-svn: 15012
2004-07-19 23:47:21 +00:00
12a71ea03e
Remove dead code.
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llvm-svn: 15011
2004-07-19 23:35:55 +00:00
15dfdb4e01
Fix a bug that occurs when the last instruction in a range is dead
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llvm-svn: 15005
2004-07-19 15:16:53 +00:00
c8fb1fb5bb
When joining intervals, join intervals in deeply nested loops first. This
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is a simple change, but seems to improve code a little. For example, on
256.bzip2, we went from 75.0s -> 73.33s (2% speedup).
llvm-svn: 15004
2004-07-19 14:40:29 +00:00
Chris Lattner