Chris Lattner
1f6024cbbe
Efficiently handle a long multiplication by a constant. For this testcase:
...
long %test(long %X) {
%Y = mul long %X, 123
ret long %Y
}
we used to generate:
test:
sub %ESP, 12
mov DWORD PTR [%ESP + 8], %ESI
mov DWORD PTR [%ESP + 4], %EDI
mov DWORD PTR [%ESP], %EBX
mov %ECX, DWORD PTR [%ESP + 16]
mov %ESI, DWORD PTR [%ESP + 20]
mov %EDI, 123
mov %EBX, 0
mov %EAX, %ECX
mul %EDI
imul %ESI, %EDI
add %ESI, %EDX
imul %ECX, %EBX
add %ESI, %ECX
mov %EDX, %ESI
mov %EBX, DWORD PTR [%ESP]
mov %EDI, DWORD PTR [%ESP + 4]
mov %ESI, DWORD PTR [%ESP + 8]
add %ESP, 12
ret
Now we emit:
test:
mov %EAX, DWORD PTR [%ESP + 4]
mov %ECX, DWORD PTR [%ESP + 8]
mov %EDX, 123
mul %EDX
imul %ECX, %ECX, 123
add %ECX, %EDX
mov %EDX, %ECX
ret
Which, incidently, is substantially nicer than what GCC manages:
T:
sub %esp, 8
mov %eax, 123
mov DWORD PTR [%esp], %ebx
mov %ebx, DWORD PTR [%esp+16]
mov DWORD PTR [%esp+4], %esi
mov %esi, DWORD PTR [%esp+12]
imul %ecx, %ebx, 123
mov %ebx, DWORD PTR [%esp]
mul %esi
mov %esi, DWORD PTR [%esp+4]
add %esp, 8
lea %edx, [%ecx+%edx]
ret
llvm-svn: 12692
2004-04-06 04:29:36 +00:00
Chris Lattner
2448baea2a
Improve code generation of long shifts by 32.
...
On this testcase:
long %test(long %X) {
%Y = shr long %X, ubyte 32
ret long %Y
}
instead of:
t:
mov %EAX, DWORD PTR [%ESP + 4]
mov %EAX, DWORD PTR [%ESP + 8]
sar %EAX, 0
mov %EDX, 0
ret
we now emit:
test:
mov %EAX, DWORD PTR [%ESP + 4]
mov %EAX, DWORD PTR [%ESP + 8]
mov %EDX, 0
ret
llvm-svn: 12688
2004-04-06 03:42:38 +00:00
Chris Lattner
7332d4c5fd
Bugfixes: inc/dec don't set the carry flag!
...
llvm-svn: 12687
2004-04-06 03:36:57 +00:00
Chris Lattner
decce5bc26
Improve code for passing constant longs as arguments to function calls.
...
For example, on this instruction:
call void %test(long 1234)
Instead of this:
mov %EAX, 1234
mov %ECX, 0
mov DWORD PTR [%ESP], %EAX
mov DWORD PTR [%ESP + 4], %ECX
call test
We now emit this:
mov DWORD PTR [%ESP], 1234
mov DWORD PTR [%ESP + 4], 0
call test
llvm-svn: 12686
2004-04-06 03:23:00 +00:00
Chris Lattner
5fc6f77b60
Emit more efficient 64-bit operations when the RHS is a constant, and one
...
of the words of the constant is zeros. For example:
Y = and long X, 1234
now generates:
Yl = and Xl, 1234
Yh = 0
instead of:
Yl = and Xl, 1234
Yh = and Xh, 0
llvm-svn: 12685
2004-04-06 03:15:53 +00:00
Chris Lattner
b49608afad
Fix typeo
...
llvm-svn: 12684
2004-04-06 02:13:25 +00:00
Chris Lattner
996e667ad4
Add support for simple immediate handling to long instruction selection.
...
This allows us to handle code like 'add long %X, 123456789012' more efficiently.
llvm-svn: 12683
2004-04-06 02:11:49 +00:00
Chris Lattner
9366f0347d
The sbb instructions really ARE sbb's, not adc's
...
llvm-svn: 12682
2004-04-06 02:02:11 +00:00
Chris Lattner
37ba31f740
Implement negation of longs efficiently. For this testcase:
...
long %test(long %X) {
%Y = sub long 0, %X
ret long %Y
}
We used to generate:
test:
sub %ESP, 4
mov DWORD PTR [%ESP], %ESI
mov %ECX, DWORD PTR [%ESP + 8]
mov %ESI, DWORD PTR [%ESP + 12]
mov %EAX, 0
mov %EDX, 0
sub %EAX, %ECX
sbb %EDX, %ESI
mov %ESI, DWORD PTR [%ESP]
add %ESP, 4
ret
Now we generate:
test:
mov %EAX, DWORD PTR [%ESP + 4]
mov %EDX, DWORD PTR [%ESP + 8]
neg %EAX
adc %EDX, 0
neg %EDX
ret
llvm-svn: 12681
2004-04-06 01:48:06 +00:00
Chris Lattner
bfe74f58d9
Minor tweak to avoid an extra reg-reg copy that the register allocator has to eliminate
...
llvm-svn: 12680
2004-04-06 01:25:33 +00:00
Chris Lattner
464e2ea567
Two changes:
...
* In promote32, if we can just promote a constant value, do so instead of
promoting a constant dynamically.
* In visitReturn inst, actually USE the promote32 argument that takes a
Value*
The end result of this is that we now generate this:
test:
mov %EAX, 0
ret
instead of...
test:
mov %AX, 0
movzx %EAX, %AX
ret
for:
ushort %test() {
ret ushort 0
}
llvm-svn: 12679
2004-04-06 01:21:00 +00:00
Chris Lattner
b0d1e9d02e
lli no longer takes the -quiet option!
...
llvm-svn: 12674
2004-04-05 20:28:41 +00:00
Chris Lattner
c97b7b2285
Do not mangle intrinsics in any way!
...
llvm-svn: 12673
2004-04-05 20:17:53 +00:00
Chris Lattner
d4f78f270b
Sparc don't got not "sqrtl", bum bum bum
...
llvm-svn: 12670
2004-04-05 19:05:15 +00:00
Misha Brukman
5ebc25c818
Kill warnings during an optimized compile where assert() disappears.
...
llvm-svn: 12669
2004-04-05 19:00:46 +00:00
Chris Lattner
29153fc2e5
Fix PR312 and IndVarsSimplify/2004-04-05-InvokeCastCrash.llx
...
llvm-svn: 12668
2004-04-05 18:46:55 +00:00
Chris Lattner
4d1fcf1dcd
Fix a bug in yesterdays checkins which broke siod. siod is a great testcase! :)
...
llvm-svn: 12659
2004-04-05 16:02:41 +00:00
Chris Lattner
8953b90aaa
Fix InstCombine/2004-04-04-InstCombineReplaceAllUsesWith.ll
...
llvm-svn: 12658
2004-04-05 02:10:19 +00:00
Chris Lattner
69193f93b6
Support getelementptr instructions which use uint's to index into structure
...
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.
llvm-svn: 12653
2004-04-05 01:30:19 +00:00
Chris Lattner
fd9fbe187d
Support getelementptr instructions which use uint's to index into structure
...
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.
Auto-upgrade .ll files that use ubytes to index into structures to use uint's.
llvm-svn: 12652
2004-04-05 01:30:04 +00:00
Chris Lattner
15701e84d1
Implement support for a new LLVM 1.3 bytecode format, which uses uint's
...
to index into structure types and allows arbitrary 32- and 64-bit integer
types to index into sequential types.
llvm-svn: 12651
2004-04-05 01:27:26 +00:00
Chris Lattner
dd28474610
Add ConstantExpr::get(Sign|Zero)Extend methods
...
llvm-svn: 12648
2004-04-04 23:20:30 +00:00
Chris Lattner
dfcf8e34cf
In the perhaps not-to-distant future, we might support gep instructions that
...
have non-long indices for sequential types. In order to avoid trying to figure
out how the v9 backend works, we'll just hack it in the preselection pass.
llvm-svn: 12647
2004-04-04 20:44:05 +00:00
Chris Lattner
ca76d11a81
Adjust to new interface
...
llvm-svn: 12646
2004-04-04 19:47:06 +00:00
Chris Lattner
092d260fc1
Adjust to new gep_type_iterator prototypes.
...
llvm-svn: 12644
2004-04-04 17:30:06 +00:00
Chris Lattner
bc8ba73cf1
Remove a bunch of cruft that was used to be backwards compatible with the last
...
prerelease format for LLVM bytecode files. Now we only are compatible with
LLVM 1.0+.
llvm-svn: 12643
2004-04-03 23:43:42 +00:00
Chris Lattner
8ed3c8aa13
Implement test/Regression/Transforms/GCSE/undefined_load.ll
...
llvm-svn: 12641
2004-04-03 00:45:16 +00:00
Chris Lattner
0defaa1cbc
Add a break in the default case
...
llvm-svn: 12639
2004-04-03 00:43:03 +00:00
Brian Gaeke
5ade501501
Add autoconf support for isStandardOutAConsole ().
...
llvm-svn: 12638
2004-04-02 21:26:04 +00:00
Chris Lattner
6748cca268
Remove obsolete files
...
llvm-svn: 12633
2004-04-02 20:56:24 +00:00
Brian Gaeke
d0bdad38f3
Add support for many of the MRegisterInfo callbacks.
...
Eliminating call-frame pseudo instrs and frame indices are still stubs.
Flesh out the emitPrologue method based on better ABI knowledge.
llvm-svn: 12632
2004-04-02 20:53:37 +00:00
Brian Gaeke
d4869e4107
Add load, store, and NOP instructions.
...
Fix up comments.
llvm-svn: 12631
2004-04-02 20:53:37 +00:00
Brian Gaeke
b65254a34d
Add support for printing pc-relative displacements of functions (as used in
...
the CALL instruction).
llvm-svn: 12630
2004-04-02 20:53:35 +00:00
Brian Gaeke
2fd46b6e43
Add support for call instructions (0-ary only for now).
...
llvm-svn: 12629
2004-04-02 20:53:33 +00:00
Chris Lattner
0916921332
Comment out debugging printouts
...
llvm-svn: 12623
2004-04-02 20:26:46 +00:00
Chris Lattner
e61b67d7d5
Rewrite the indvars pass to use the ScalarEvolution analysis.
...
This also implements some new features for the indvars pass, including
linear function test replacement, exit value substitution, and it works with
a much more general class of induction variables and loops.
llvm-svn: 12620
2004-04-02 20:24:31 +00:00
Chris Lattner
d934c70cf8
Add a new analysis
...
llvm-svn: 12619
2004-04-02 20:23:17 +00:00
Chris Lattner
eed034bcd3
Fix the obvious bug in my previous checkin
...
llvm-svn: 12618
2004-04-02 18:15:10 +00:00
Chris Lattner
9f0db32625
Implement Transforms/SimplifyCFG/return-merge.ll
...
This actually causes us to turn code like:
return C ? A : B;
into a select instruction.
llvm-svn: 12617
2004-04-02 18:13:43 +00:00
Alkis Evlogimenos
d64e904e27
Clean up code a bit.
...
llvm-svn: 12615
2004-04-02 18:11:32 +00:00
Brian Gaeke
2845936a34
Only strip symbols if emitting bytecode to the assembly file.
...
Move lowerselect pass to come after preselection. Move machine
code construction and stack slots pass to come right before instruction
selection. This is to help fix perlbmk.
Update comments.
Make the sequence of passes in addPassesToJITCompile look more like
the sequence of passes in addPassesToEmitAssembly, including support
for -print-machineinstrs.
llvm-svn: 12614
2004-04-02 17:52:40 +00:00
Brian Gaeke
cc24411c0a
Add support for constant select expressions. Clarify the assertion failure msg.
...
llvm-svn: 12613
2004-04-02 17:52:29 +00:00
Alkis Evlogimenos
fe66caa9a0
Fix type in comments
...
llvm-svn: 12611
2004-04-02 16:02:50 +00:00
Alkis Evlogimenos
5fc4772d5e
Fix type in instruction builder instantiation
...
llvm-svn: 12610
2004-04-02 15:51:03 +00:00
Chris Lattner
a45a216ff6
Make the verifier API more complete and useful.
...
Patch contributed by Reid Spencer
llvm-svn: 12609
2004-04-02 15:45:08 +00:00
Alkis Evlogimenos
d186ed02e4
Add more ADC and SBB variants
...
llvm-svn: 12607
2004-04-02 07:11:10 +00:00
Chris Lattner
454e18317d
Add new function, autoconf support required tho
...
llvm-svn: 12600
2004-04-02 05:04:03 +00:00
Chris Lattner
c24019c825
Fix PR310 and TailDup/2004-04-01-DemoteRegToStack.llx
...
llvm-svn: 12597
2004-04-01 20:28:45 +00:00
Chris Lattner
59fdf74968
Remove some assertions that are now bogus with the last patch I put in
...
llvm-svn: 12595
2004-04-01 19:21:46 +00:00
Chris Lattner
146d0df5e4
Fix PR306: Loop simplify incorrectly updates dominator information
...
Testcase: LoopSimplify/2004-04-01-IncorrectDomUpdate.ll
llvm-svn: 12592
2004-04-01 19:06:07 +00:00