Chris Lattner
0bafa9818b
Make linear scan the default
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15111 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 18:42:00 +00:00
Misha Brukman
2ed17cadb4
* Change bool from cInt to cByte (for now)
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* Don't allow negative immediates to users of unsigned immediates
* Fix long compares
* Support <const int>, op as a potential immediate candidate
* Fix sign extension of short and byte loads
* Fix and improve integer casts
* Fix passing of doubles as vararg functions
Patch contributed by Nate Begeman.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15109 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 15:58:04 +00:00
Alkis Evlogimenos
77c4c4da24
Put variable name to a separate line.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15108 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 15:30:33 +00:00
Misha Brukman
75fa4e4f99
Fix indentation and wrap code at 80 cols
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15107 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 15:26:23 +00:00
Alkis Evlogimenos
d3014edc51
Sorting is now handled by both linearscan and iterative scan so live
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intervals need not be sorted anymore. Removing this redundant step
improves LiveIntervals running time by 5% on 176.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15106 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 15:18:10 +00:00
Alkis Evlogimenos
82c24fba8a
Fit to 80 columns.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15105 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 14:29:31 +00:00
Alkis Evlogimenos
53eb37340c
Some compile time improvements resulting in a 1sec speedup in the 5sec
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compilation of gcc:
* Use vectors instead of lists for the intervals sets
* Use a heap for the unhandled set to keep intervals always sorted and
makes insertions back to the heap very fast (compared to scanning a
list)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15103 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 08:14:44 +00:00
Chris Lattner
0fb56afab1
This is a trivial dead store elimination pass. It very very simple and
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can be improved in many ways. But: stop laughing, even with -basicaa it
deletes 15% of the stores in 252.eon :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15101 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 08:00:28 +00:00
Chris Lattner
b8a31ace2c
Clean up reference counting to stop "leaking" alias sets
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15099 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 07:58:18 +00:00
Chris Lattner
199edde707
Remove extraneous punctuation
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15098 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 05:51:56 +00:00
Chris Lattner
93c9587fbb
Update GC intrinsics to take a pointer to the object as well as a pointer
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to the field being updated. Patch contributed by Tobias Nurmiranta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15097 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 05:51:13 +00:00
Chris Lattner
9545a1797b
Updates to gc intrinsics, contributed by Tobias Nurmiranta
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15096 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 05:50:01 +00:00
Alkis Evlogimenos
10e169b038
Use reverse iterators when updating the vector, since scanning from
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the end will reduce erase() runtimes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15093 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 02:16:53 +00:00
Chris Lattner
6beef3e1a0
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15092 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 00:04:14 +00:00
Chris Lattner
1e31363a9e
Minor cleanups
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15091 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 23:17:57 +00:00
Chris Lattner
3dbb504081
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15090 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 21:28:26 +00:00
Brian Gaeke
7848e68c16
These files don't need to include <iostream> since they include "Support/Debug.h".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15089 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:50:33 +00:00
Misha Brukman
a31f1f7cb2
* 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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15087 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:30:18 +00:00
Misha Brukman
17a9000ac8
* Speed up canUseAsImmediateForOpcode() by comparing Operand before
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dyn_cast<>ing and checking Constant's value
* Convert tabs to spaces
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15086 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:22:06 +00:00
Chris Lattner
f0cacc0ae7
* 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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15085 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:14:10 +00:00
Misha Brukman
97a296f743
* Fix printing of signed immediate values (Nate Begeman)
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* Fix printing of `zeroinitializer'
* Fix printing of `linkonce' globals, complete with stubs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15084 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:11:11 +00:00
Misha Brukman
1013ef5228
* 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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15083 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:09:08 +00:00
Chris Lattner
5eb919405c
Make cast-cast code a bit more defensive
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"simplify" a bit of code for comparison/and folding
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15082 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 19:50:44 +00:00
Misha Brukman
e0380e0c42
Use addSImm() instead of addImm() for stack offsets, which may be negative.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15081 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 19:36:57 +00:00
Alkis Evlogimenos
d03451ef47
Fix analysis name.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15078 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 17:23:44 +00:00
Misha Brukman
53d9a48855
Add SUBI instruction
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15077 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 15:53:04 +00:00
Alkis Evlogimenos
fc29e63afe
Clear spilled list at once. Remove unused vector.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15073 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 12:00:10 +00:00
Alkis Evlogimenos
2d54705c4b
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15072 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 09:46:55 +00:00
Alkis Evlogimenos
3b1af0b3fc
Improve file comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15069 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 08:28:39 +00:00
Alkis Evlogimenos
910d0d6066
Add Iterative scan register allocator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15068 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 08:24:35 +00:00
Alkis Evlogimenos
c8dec2c23e
Linearscan is no longer experimental.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15067 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 08:18:50 +00:00
Chris Lattner
6d4b0d723d
Add capability to remove aliasing aliassets from an AST
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15066 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 07:04:26 +00:00
Chris Lattner
12c1155403
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).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15064 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 05:18:04 +00:00
Chris Lattner
e8a7e593e6
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15063 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 04:27:24 +00:00
Chris Lattner
bb8f43c8fc
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15062 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 03:56:54 +00:00
Brian Gaeke
0d3ac4cc30
Solaris hack for isinf()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15058 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 03:32:51 +00:00
Brian Gaeke
043c0bb0d9
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15056 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 03:15:26 +00:00
Brian Gaeke
418f73cbaa
Add platform-independent wrapper function for isinf().
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Patch contributed by Bill Wendling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15050 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 03:13:50 +00:00
Misha Brukman
cd2273f4a7
Shorts are aligned to 2 bytes, bools to 1 byte (in structs).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15048 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 20:59:57 +00:00
Misha Brukman
bf417a6d46
Treat external variables similarly to those with weak linkage: load indirect.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15047 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 20:43:05 +00:00
Misha Brukman
86ddcf9d4f
Differentiate between global and weak symbol loads
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15037 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 15:52:25 +00:00
Misha Brukman
ec6319a00c
* 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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15036 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 15:51:37 +00:00
Misha Brukman
e48178e8a6
Differentiate between global and weak symbol loads
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15035 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 15:45:27 +00:00
Misha Brukman
5c4544160f
Double alignment in structs is 4 bytes, not 8. Patch by Nate Begeman.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15034 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 15:43:25 +00:00
Alkis Evlogimenos
a39fc0efcf
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15032 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 13:28:17 +00:00
Alkis Evlogimenos
6bd23c0832
Remove unneeded functor. LiveInterval has a < operator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15031 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 10:20:03 +00:00
Chris Lattner
adfd32f8ee
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15030 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 05:45:24 +00:00
Chris Lattner
59a20773f8
Implement Transforms/InstCombine/IntPtrCast.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15029 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 05:21:00 +00:00
Chris Lattner
9ce300013d
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15027 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 03:58:07 +00:00
Misha Brukman
d43b9fd1ae
Fix stack frame layout in prologue/epilogue. Patch courtesy of Nate Begeman.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15026 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 02:23:09 +00:00