7c257321c7
This is the real fix for the previous register allocator problem.
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Physical registers should not float around.
llvm-svn: 7587
2003-08-05 00:48:47 +00:00
796684b8c7
Fix Bug: test/Regression/Jello/2003-08-03-CallArgLiveRanges.llx
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llvm-svn: 7558
2003-08-04 02:12:48 +00:00
ea6aac412d
Use target specific interface instead of forcing it to be target-generic
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llvm-svn: 7413
2003-07-30 05:33:48 +00:00
a2e2f5cc45
Rename function to be more consistent with filename
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llvm-svn: 7352
2003-07-26 23:49:58 +00:00
ba21b33499
If the pass changes _anything_ it must return true
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llvm-svn: 7344
2003-07-26 23:05:37 +00:00
6077c3195f
Simplify code by using ConstantInt::getRawValue instead of checking to see
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whether the constant is signed or unsigned, then casting
llvm-svn: 7252
2003-07-23 15:22:26 +00:00
26bb3c1df6
Please, save your applause^H^H^H^H^H^H^H^Hflames for the end...
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Avoid a fall-through in the (stubby) treatment of the longjmp intrinsic
call which causes llc & lli to core-dump.
Add a sort-of treatment of cast double to ulong. I am not really sure
what a user should expect to see upon casting a negative FP value to
unsigned long long. But with what is given here, I was able to write
a program that could cast -123.456 to ulong and back and get -123.0,
which seems like a step in the right direction. GCC seems to give you
0. I don't know if I'd consider that useful.
These cases were coming up in GNU coreutils-5.0.
llvm-svn: 7205
2003-07-18 20:23:43 +00:00
ac7c5a5241
Use getClassB for load and store; we don't want to abort when we
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try to load or store through a bool*.
llvm-svn: 7195
2003-07-17 21:30:06 +00:00
53426e6526
Setjmp should always return zero if we don't implement longjmp. This avoids
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leaving trash in the register, fixing anagram
llvm-svn: 7013
2003-06-30 19:35:54 +00:00
7ac937e011
Until there is a setjmp/longjmp transformation pass, codegen setjmp as a noop
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and longjmp as an abort!
llvm-svn: 6977
2003-06-29 16:42:32 +00:00
53b843fc04
Do not use the inefficient, fixed function, CBW, CDQ, ... instructions
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llvm-svn: 6844
2003-06-22 03:31:18 +00:00
6e1ec2394f
Minor simplification to 64-bit instsel
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llvm-svn: 6831
2003-06-21 18:15:27 +00:00
22f54501be
For 16 and 32-bit multiplies, use the IMUL instruction instead of the MUL instruction.
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This allows us to not force the use of the EAX/AX registers!
llvm-svn: 6830
2003-06-21 17:16:58 +00:00
df1230ecf2
Generate code for LONG indexes to getelementptr instructions more efficiently
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llvm-svn: 6828
2003-06-21 16:01:24 +00:00
f6db070e65
Implement generation of cmp R, C to not use an extra register
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llvm-svn: 6627
2003-06-05 19:30:30 +00:00
06250116a8
Special case simple binary operator X op C
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This avoid generating a register to hold C, which in turn speeds up the
register allocator by a lot: ~9% on 164.gzip and ~17% on 256.bzip2. This
also speeds up other passes. This also speeds up execution of the program
marginally, and makes the asm much easier to read. :)
llvm-svn: 6626
2003-06-05 18:28:55 +00:00
fd2a8f5868
Remove usage of typedef
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llvm-svn: 6583
2003-06-03 15:41:58 +00:00
4536fcd57b
* Implement cast (long|ulong) to bool
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* Fix cast of (short|ushort|int|uint) to bool to work right
llvm-svn: 6510
2003-06-01 03:38:24 +00:00
372086c87b
Add support for shl and shr for 64 bit integer types
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llvm-svn: 6499
2003-06-01 01:56:54 +00:00
9c105cd27f
Clean up #includes
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llvm-svn: 6173
2003-05-13 20:21:19 +00:00
3fa7b77ddf
Make abort more explicit
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llvm-svn: 6151
2003-05-12 21:16:26 +00:00
d4e5409f35
Remove the assertion failure of course... doh
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llvm-svn: 6150
2003-05-12 20:39:39 +00:00
5069283493
Implement casts from unsigned integers to floating point
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llvm-svn: 6148
2003-05-12 20:36:13 +00:00
6c906adb73
Make error messages more useful than jsut an abort
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llvm-svn: 6146
2003-05-12 20:16:58 +00:00
786bd8849a
Do not insert multiple initializations for the same value in a PHI node
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llvm-svn: 6113
2003-05-12 14:22:21 +00:00
93c8eddd75
Add support for Add, Sub, And, Or, & Xor constant exprs
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llvm-svn: 6049
2003-05-08 20:49:25 +00:00
b257aab658
Add support for variable argument functions!
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llvm-svn: 6046
2003-05-08 19:44:13 +00:00
d964c3b9fd
IMPLICIT_DEF was not the beautiful elegant solution I thought it was going
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to be. In fact, it made stuff worse. :(
llvm-svn: 6013
2003-05-07 19:21:28 +00:00
37ffac92d5
Emit pseudo instructions to indicate that some registers are live on entrance
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and exit of the function. This fixes bug: Jello/2003-05-06-LivenessClobber.llx
and the Fhourstones benchmark
llvm-svn: 6010
2003-05-06 21:32:22 +00:00
effa5ba1ac
The Hyphenation-Adding Committee is now in session.
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llvm-svn: 5986
2003-05-03 02:18:17 +00:00
2a2338f1ba
Fix bogus assert
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llvm-svn: 5949
2003-04-25 21:58:54 +00:00
ec6f16eae6
Fix iterator invalidation problem with cast instructions
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llvm-svn: 5876
2003-04-23 17:57:48 +00:00
2670371c9a
Implement the constantexpr CAST instruction correctly
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llvm-svn: 5875
2003-04-23 17:22:12 +00:00
e569e992d8
It's "necessary" to spell "necessarily" correctly.
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llvm-svn: 5833
2003-04-22 17:54:23 +00:00
5b348718df
Add support for a simple constantexpr: cast of one ptr type to another
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llvm-svn: 5829
2003-04-21 21:33:44 +00:00
76e9f774dd
Don't emit unneccesary branch instructions!
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llvm-svn: 5328
2003-01-16 18:07:23 +00:00
2f983fcce3
Implement optimization folding setcc into branch.
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llvm-svn: 5324
2003-01-16 16:43:00 +00:00
b2809dc6b5
Implement code to keep the stack pointer aligned to an 8 byte boundary.
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This improves the performance of the power benchmark by a few percent.
This will be neccesary for SSE code, which requires 16 byte alignment of
the stack.
llvm-svn: 5320
2003-01-16 02:20:12 +00:00
b4d58d7f9e
Rename MachineInstrInfo -> TargetInstrInfo
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llvm-svn: 5272
2003-01-14 22:00:31 +00:00
6c0daf795a
* Adjust to use new interfaces, eliminating CurReg stuff
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* Support arbitrary FP constants
* Fix bugs in frame layout for function calls and incoming arguments
* Insert copies for constant arguments to PHI nodes into the BOTTOM of
predecessor blocks, not the top.
* Implement _floating point_ support: setcc, return, load, store, cast
* Fix several bugs in the cast instruction
* Abstract out call emission and load/store for FP
* Implement malloc/free without previous lowering pass.
* Make use of new forms of MachineOperand
* Implement _long_ support!
* Fix many bugs in FP support
* Change branch from je/jne to je/jmp
* Simplify code generated for GEP instructions
llvm-svn: 5223
2003-01-13 00:32:26 +00:00
26c23467c5
Rename FunctionFrameInfo to MachineFrameInfo
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llvm-svn: 5201
2002-12-28 21:08:28 +00:00
51553e0700
* Use the new Abstract Frame Manager to handle incoming arguments and
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fixed size allocas
* Revamp call emission to work with new frame manager
llvm-svn: 5178
2002-12-28 20:24:02 +00:00
a76f456a60
* Simplify Value classes
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* Add initial support for FP constants
* Add initial FP support for several instructions
llvm-svn: 5154
2002-12-25 05:13:53 +00:00
cfcd0603d0
Changes to compile with GCC 2.96
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Changes to support configurable pointer size and endianness
llvm-svn: 5130
2002-12-24 00:03:11 +00:00
b437b7de1a
Don't force setCC instructions into AL
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llvm-svn: 5104
2002-12-18 01:44:31 +00:00
2e6f17f136
Build add instructions of the correct form!
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llvm-svn: 5090
2002-12-16 23:36:57 +00:00
e92fb346d3
Two fixes:
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* Only load incoming arguments into virtual registers once at the
beginning of the function
* Assign different virtual registers to each reference to constants/globals
llvm-svn: 5088
2002-12-16 22:54:46 +00:00
e92f1bb011
Make sure stack manipulation refers to ESP the right number of times
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llvm-svn: 5086
2002-12-16 22:29:06 +00:00
5c59014a1b
Add some special cases to make common getelementptr cases easier to read/faster
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llvm-svn: 5084
2002-12-16 19:32:50 +00:00
6ebe959530
brg
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Fix some bugs in use of MBB vs. BB and iterators that are invalidated before
we use them.
Reference targetClass by enum name, not by number.
llvm-svn: 5069
2002-12-16 04:23:29 +00:00
Chris Lattner