Alkis Evlogimenos
44747c570a
Output mov %REG = 0 instead of xor %REG, %REG, %REG to clear a
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register so that LiveVariable analysis is not confused.
llvm-svn: 10773
2004-01-12 07:22:45 +00:00
Chris Lattner
c37577eb9f
Clean up a lot of the code I added yesterday by exposing the IntrinsicLowering
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implementation from the TargetMachine directly.
llvm-svn: 10636
2003-12-28 21:23:38 +00:00
Chris Lattner
c487970d6b
Whoops, don't try to lower non intrinsic calls
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llvm-svn: 10632
2003-12-28 09:53:23 +00:00
Chris Lattner
1791047661
implement support for the intrinsic lowering functionality
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llvm-svn: 10629
2003-12-28 09:47:19 +00:00
Alkis Evlogimenos
0e892b6337
Move FP_REG_KILL closer to the return instruction.
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llvm-svn: 10567
2003-12-21 16:47:43 +00:00
Alkis Evlogimenos
7b61337ce6
Move FP_REG_KILL closer to the actual branch instruction.
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llvm-svn: 10563
2003-12-20 17:28:15 +00:00
Alkis Evlogimenos
41bd8284e3
Remove floating point killer pass. This is now implemented in the
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instruction selector by adding a new pseudo-instruction
FP_REG_KILL. This instruction implicitly defines all x86 fp registers
and is a terminator so that passes which add machine code at the end
of basic blocks (like phi elimination) do not add instructions between
it and the branch or return instruction.
llvm-svn: 10562
2003-12-20 16:22:59 +00:00
Brian Gaeke
296546cf0c
Constant shift expressions, meet InstSelectSimple. Yow!!
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llvm-svn: 10170
2003-11-22 06:49:41 +00:00
Brian Gaeke
8c4c9f6f1e
Stub for constant shift expr support.
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llvm-svn: 10168
2003-11-22 05:18:35 +00:00
Chris Lattner
6677af8dee
Fix PR123
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llvm-svn: 10069
2003-11-18 17:47:05 +00:00
Brian Gaeke
d25f86d683
Put all LLVM code into the llvm namespace, as per bug 109.
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llvm-svn: 9903
2003-11-11 22:41:34 +00:00
Chris Lattner
0e32494c79
Delete unused EmitByteSwap method
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Implement mul/div/rem constant expressions
llvm-svn: 9424
2003-10-23 17:21:43 +00:00
Misha Brukman
0f649c0045
* Order includes according to style guide
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* Convert tabs to spaces
* Make code fit within 80 columns
llvm-svn: 9416
2003-10-23 16:22:08 +00:00
John Criswell
b402729b30
Added LLVM project notice to the top of every C++ source file.
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Header files will be on the way.
llvm-svn: 9298
2003-10-20 19:43:21 +00:00
Chris Lattner
c83d8249cb
Further cleanups and simplifications
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llvm-svn: 9282
2003-10-20 04:48:06 +00:00
Chris Lattner
fce0650cee
Eliminate code for pointer size and endianness emulation.
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llvm-svn: 9281
2003-10-20 04:11:23 +00:00
Chris Lattner
5a577c0b28
* Rename X86::IMULr16 -> X86::IMULrr16
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* Implement R1 = R2 * C where R1 and R2 are 32 or 16 bits. This avoids an
extra copy into a register, reducing register pressure.
llvm-svn: 9278
2003-10-20 03:42:58 +00:00
Chris Lattner
3d519c7bab
* Multiplications by 2^X are turned into shifts. This factors code out of the
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getelementptr code path for use by other code paths (like malloc and alloca).
* Optimize comparisons with zero
* Generate neg, not, inc, and dec instructions, when possible.
This gives some code size wins, which might translate into performance. We'll
see tommorow in the nightly tester.
llvm-svn: 9267
2003-10-19 21:09:10 +00:00
Chris Lattner
de87c8a892
Fix bug: Jello/2003-10-18-PHINode-ConstantExpr-CondCode-Failure.llx
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This also fixes miscompilation of 176.gcc.
llvm-svn: 9249
2003-10-19 00:26:11 +00:00
Chris Lattner
0a276257ae
Add support for the new varargs intrinsics
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llvm-svn: 9224
2003-10-18 05:56:40 +00:00
Chris Lattner
f2ed60c0b7
Decrease usage of use_size()
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llvm-svn: 9135
2003-10-15 16:48:29 +00:00
Misha Brukman
868eac95dd
Fix spelling.
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llvm-svn: 9027
2003-10-10 17:57:28 +00:00
Chris Lattner
fc3f9605a7
Instead of hacking in custom support for Invoke/Unwind, use the LowerInvoke pass
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llvm-svn: 8871
2003-10-05 19:15:47 +00:00
Chris Lattner
e8ae7bf114
Eliminate support for the llvm.unwind intrinisic, using the Unwind instruction instead
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llvm-svn: 8411
2003-09-08 19:44:26 +00:00
Chris Lattner
4ad8720f91
Add support for the unwind instruction
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llvm-svn: 8408
2003-09-08 18:54:55 +00:00
Chris Lattner
062cc9d341
Add support for the llvm.unwind intrinsic, which we codegen to just do an abort
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until we implement unwinding.
Add support for the invoke instruction, which codegens just like a call with
a branch after it.
The end effect of this change is that programs using the invoke instruction,
but never unwinding, will work fine. Programs that unwind will abort until
we get unwind support.
llvm-svn: 8187
2003-08-28 21:23:43 +00:00
Chris Lattner
d627d84e23
Implement: Jello/test-constantexpr.ll
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llvm-svn: 8127
2003-08-24 19:19:47 +00:00
Chris Lattner
f54b131a49
Add support for the sig(set|long)jmp intrinsics
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llvm-svn: 7951
2003-08-18 16:06:09 +00:00
Brian Gaeke
77c65be59e
Factory methods for FunctionPasses now return type FunctionPass *.
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llvm-svn: 7823
2003-08-13 18:18:15 +00:00
Chris Lattner
17fc21b5fa
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
Chris Lattner
15891a50c1
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
Chris Lattner
cf28d0f799
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
Chris Lattner
40cc4c1392
Rename function to be more consistent with filename
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llvm-svn: 7352
2003-07-26 23:49:58 +00:00
Chris Lattner
b92653f037
If the pass changes _anything_ it must return true
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llvm-svn: 7344
2003-07-26 23:05:37 +00:00
Chris Lattner
6ad460b336
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
Brian Gaeke
bf46d75365
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
Brian Gaeke
638e6ef31c
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
Chris Lattner
d212141d9e
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
Chris Lattner
6b31a873ee
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
Chris Lattner
38b7729915
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
Chris Lattner
7fb273d416
Minor simplification to 64-bit instsel
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llvm-svn: 6831
2003-06-21 18:15:27 +00:00
Chris Lattner
2840a1b4ee
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
Chris Lattner
4a8d96567f
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
Chris Lattner
6a3d2fc70e
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
Chris Lattner
ee044c3179
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
Chris Lattner
1cb899dd19
Remove usage of typedef
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llvm-svn: 6583
2003-06-03 15:41:58 +00:00
Chris Lattner
bf8929c4bb
* 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
Chris Lattner
92eb5bbb15
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
Chris Lattner
f365fdec06
Clean up #includes
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llvm-svn: 6173
2003-05-13 20:21:19 +00:00
Chris Lattner
19ca50fe2a
Make abort more explicit
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llvm-svn: 6151
2003-05-12 21:16:26 +00:00